Field device mounting

Abstract

The field device mounting 120 includes a connector tube 105 configured to couple to a field device. A clamp leg 102 is coupled to the connector tube 120 and configured to engage with fluid handling equipment. A tensioner assembly is coupled to the clamp leg 102 and includes a tensioner bracket 124. A biasing member 160 is positioned to bias the tensioner bracket 124 away from the clamp leg 102. A band 104 is configured to pass around the fluid handling equipment and couple to either side of the tensioner bracket 124. A buckle 380 is configured to provide a clamping force to maintain tension on the band. Field device 100 mountings using a linear tensioner 106 or a v-bolt 204, as well as a method 400 for coupling a field device mounting to fluid handling equipment, are also provided.

Description

[Technical Field]

[0001] In industrial environments, control systems are used to monitor and control inventories such as industrial and chemical processes. Typically, control systems perform these functions using field devices that are distributed at strategic locations within the industrial process and coupled by process control loops to control circuits in a control room. The term "field device" refers to any device that performs a function in a distributed control or process monitoring system, including all devices used to measure, control, and monitor industrial processes.

[0002] Field devices are used by the process control and measurement industry for a variety of purposes. Typically, such devices have field-hardened enclosures so that they can be installed outdoors in relatively harsh environments and can withstand climatic extremes such as temperature, humidity, vibration, and mechanical shock. These devices also typically operate on relatively low power. For example, field devices are currently available that receive all of their operating power from the well-known 4-20 mA loop.

[0003] There are several different types of field devices. Such devices include process variable transmitters that contain or are coupled to process variable sensors and provide an indication of a process variable to a control system. Field devices also include actuators such as valve controllers and positioning devices that can generate a physical output (i.e., the position of a component) based on signals received from the control system. Field devices also include gauges or displays that can be mounted at key locations within the process environment to indicate a process variable or condition. Field devices also include sensor assemblies mounted in process pipes, tanks, or vessels, referred to herein as fluid handling equipment, and electrically coupled to process variable transmitters.

[0004] Field devices are often mounted to the process equipment (e.g., process pipes) to which they are coupled. Such mounting presents several challenges because the fluid handling equipment (pipes or vessels) can experience wide temperature fluctuations as well as mechanical vibrations. However, the field device mounting must remain rigidly in place under these conditions. Summary of the Invention

[0005] The field device mounting includes a mating tube configured to couple to a field device. The clamp leg is coupled to the mating tube and configured to engage with fluid handling equipment. The tensioner assembly is coupled to the clamp leg and includes a tensioner bracket. The biasing member is positioned to bias the tensioner bracket away from the clamp leg. The band is configured to pass around the fluid handling equipment and couple to either side of the tensioner bracket. The buckle is configured to provide a clamping force to maintain tension on the band. Field device mountings using linear tensioners, as well as methods for coupling a field device mounting to fluid handling equipment, are also provided. [Brief explanation of the drawings]

[0006] [Figure 1] 1 is a schematic diagram of a prior art attachment; [Figure 2] 1 is a schematic diagram of a field device mount according to one embodiment of the present invention. [Figure 3] FIG. 10 is a schematic diagram of a field device mount according to another embodiment of the present invention. [Figure 4] 1 is a schematic cross-sectional view of a clamp leg according to an embodiment of the present invention; [Figure 5A] FIG. 1 is a schematic diagram of a linear tensioner assembly according to one embodiment of the present invention in a released state. [Figure 5B] FIG. 1 is a schematic diagram of a linear tensioner assembly according to one embodiment of the present invention in a tensioned state. [Figure 6A]FIG. 12 is a schematic diagram of a clamp leg in combination with a vertical tension assembly according to one embodiment of the present invention in a relaxed state. [Figure 6B] FIG. 10 is a schematic diagram of a clamp leg in combination with a vertical tensioner assembly according to one embodiment of the present invention in a compressed state. [Figure 7] FIG. 10 is a schematic diagram of a field device mount according to another embodiment of the present invention. [Figure 8] FIG. 1 is an enlarged schematic cross-sectional view of a portion of a vertical single band tensioner assembly according to one embodiment of the present invention. [Figure 9] FIG. 10 is a schematic diagram of a field device mount according to another embodiment of the present invention. [Figure 10] FIG. 10 is a schematic diagram of a field device mount according to another embodiment of the present invention. [Figure 11] FIG. 10 is a schematic diagram of a field device mount according to another embodiment of the present invention. [Figure 12] FIG. 12 is a cross-sectional view of the field device mount shown in FIG. [Figure 13] FIG. 10 is a schematic diagram of a clamp leg under tension in a vertical tensioning assembly according to one embodiment of the present invention. [Figure 14] FIG. 10 is a schematic diagram showing pin rotation during installation. [Figure 15] FIG. 2 is an unassembled view of a field device mount according to one embodiment of the present invention. [Figure 16] 1 is a schematic cross-sectional view of a field device mount according to one embodiment of the present invention; [Figure 17] 2 is an enlarged schematic view of a portion of a field device mount according to one embodiment of the present invention. [Figure 18] 1 is a schematic diagram of a buckle for use in conjunction with an embodiment of the present invention. [Figure 19] FIG. 1 is a flow diagram of a method for installing a field device according to one embodiment of the present invention. [Figure 20] FIG. 10 is a schematic diagram of a field device mount according to another embodiment of the present invention. [Figure 21] FIG. 21 is an enlarged view of the field device mount shown in FIG. 20. [Figure 22] FIG. 10 is a schematic diagram of a field device mount according to another embodiment of the present invention. [Figure 23] 16 is a schematic diagram illustrating physical markings that indicate proper installation of the field device mount shown in FIG. 15. DETAILED DESCRIPTION OF THE INVENTION

[0007] The embodiments described herein utilize a known process commonly referred to as banding, in which a relatively thin strip of material is wrapped around one or more objects to be banded and then tensioned, clamped, and cut to hold the objects in the banded position. Using this banding process to attach field devices to process pipe offers a significant improvement over previous approaches. Previously, unique saddle clamp sizes were required for each different pipe size; now, the banding pieces can simply be cut to length depending on the pipe size the field device attachment will be used with. This allows manufacturers to stack spools of banding material, and when a field device attachment is ordered, the banding material can simply be cut to length. The banding process also allows for removably installing field device attachments around tanks or vessels, which is an improvement over previous attachment methods that involve welding.

[0008] To tension the banding, a known banding tensioner tool can be used. Typically, a buckle is first attached to the banding, and then the banding is wrapped around the fluid handling equipment and through the buckle. In the case of a field device attachment according to embodiments described herein, the banding is instead wrapped through a tensioner bracket; otherwise, the banding operation is substantially the same as a typical banding process. The tensioner tool pulls the loose end of the band tight, and the buckle secures the band.

[0009] To accommodate the temperature range of the field device mounting, different banding materials can be used to accommodate the needs of the application.

[0010] In recent years, the use of surface-mounted (i.e., mounted on the exterior surface of fluid handling equipment such as pipes or vessels) temperature measurement devices has become popular as an alternative to direct temperature measurement methods (e.g., traditional thermowells). These surface-mounted devices can provide a non-invasive measurement point for measuring the external temperature of the pipe or vessel surface.

[0011] FIG. 1 is a schematic diagram of a measurement system using a prior art fitting. A temperature measuring device 12 is spring-loaded and configured to contact the outer diameter of a pipe surface held within a pipe fitting 14. As shown, the pipe fitting 14 includes a pair of semicircular saddle clamps 16, 18, each having respective ears 20, 22 that are biased together by fasteners such as a bolt 24 and a nut 26. As can be seen, the curvature of each semicircular saddle clamp 16, 18 approximates the outer diameter of the pipe to which it is attached. Therefore, many sizes of saddle clamps must be manufactured and stacked for the system 10 to accommodate various process equipment and pipes having different diameters. While this solution provides a strong connection to the pipe, it generally has a relatively high cost and requires different saddle clamp sizes for each pipe size. This creates challenges for businesses and customers regarding clamp inventory, shipping, and installation. As saddle clamps increase in size to support larger-diameter fluid handling equipment, the environmental impact of shipping pipe fittings to customers increases, along with safety risks during manufacturing and installation.

[0012] Various embodiments described below provide field device mounts that are adaptable to the size of fluid handling equipment and do not require different clamps for each different pipe, vessel, or equipment size. Additionally, the embodiments described herein can compensate for small diameter changes that occur during temperature changes due to thermal expansion and / or contraction. This helps ensure that a robust mount is provided regardless of differences in thermal expansion between the fluid handling equipment and the clamping system.

[0013] The pipe fitting design shown with respect to FIG. 1 provides a rigid bond around the outside of the pipe, but may be susceptible to differential thermal expansion / contraction and / or vibration.

[0014] FIG. 2 is a schematic diagram of a field device mount according to one embodiment of the present invention. To provide a solution that can be used with a wide range of fluid handling equipment sizes and materials, the field device mount shown in FIG. 2 uses clamp legs 102, flexible banding sections 104, and a linear tensioning mechanism 106. The combination of the flexible banding sections 104 and the tensioning mechanism 106 means that the field device can maintain sufficient clamping force regardless of changes caused by thermal expansion or contraction. The field device mount 100 allows for multiple attachment methods to the fluid handling equipment 101. FIG. 2 shows a dual-band configuration with a linear tensioner 106 according to a first embodiment. As shown, the band 104 wraps around the top of the clamp legs 102 around the fluid handling equipment 101. The field device mount 100 includes an internally threaded connector tube 105 for receiving the field device. In the illustrated example, a spring-loaded sensor adapter 103 threads onto the mating tube 105 to position the spring-loaded temperature sensor against the exterior surface of the fluid handling device 101. The spring-loaded sensor adapter 103 preferably provides a flame / explosion-resistant barrier. The mating tube extension includes the mating tube 105 and a handle 322 that assembles into the clamp leg 102.

[0015] FIG. 3 is a schematic diagram of a field device mount according to another embodiment of the present invention. As shown in FIG. 3, the field device mount 120 continues to use the clamp legs 102 but has only a single band 104. This single-band configuration utilizes a single compression spring (e.g., a wave spring) 160 guided by a stem 322, which is the central axis of the interface tube extension. In this example, a buckle or any other suitable structure may be used for banding. In this embodiment, the banding portion 104 is secured to the tensioner bracket 124 along the central axis, which compresses the spring 160 when the banding portion 104 is tightened to secure the field device mount.

[0016] FIG. 4 is a schematic cross-sectional view of a clamp leg according to one embodiment of the present invention. The primary contacting component of a field device mount according to various embodiments described herein, referred to as the clamp leg 102, holds the field device substantially perpendicular (both axially and radially) to the fluid handling device 101 and mates with the surface of the fluid handling device 101. The clamp leg 102 has a generally angled profile, which offers numerous advantages over flat-top designs. The contacting surface of the clamp leg 102 has a v-groove 130 designed to provide the greatest stability for the widest range of fluid handling device sizes. In one particular embodiment, the v-groove 130 has an angle of approximately 160°. The top profile allows for uniform distribution of force, indicated diagrammatically by arrows 132, across the surface of the clamp leg 102 when the banding portion 104 is tensioned to avoid high stress concentrations. Compared to a clamp leg having a flat top, the clamp leg 102 allows the banding portion 104 to contact the entire surface of the clamp leg 102, thereby distributing stress across the outer surface of the clamp leg 102.

[0017] 5A is a schematic diagram showing the linear tensioner assembly in more detail. As shown, the linear tensioner assembly 106 generally includes a pair of band-engaging elements 136, 138, each configured to allow a fastener 140 to pass therethrough. A compression spring 142 is disposed around the fastener 140 and captured between the band-engaging portion 138 and a nut 144. As the nut 144 is rotated, the compression spring 142 changes compression.

[0018] FIG. 5B is a schematic diagram of the linear tensioner assembly 106 in a tensioned state. As shown in FIG. 5B, the band (not shown) exerts a force in directions 146, 148 that pulls the band-engaging portions 136, 138 apart against the bias of the compression spring 142. If any change in the diameter of the fluid handling device occurs (e.g., caused by thermal expansion or contraction), the distance between the band-engaging portions 136, 138 changes accordingly to maintain substantially the same tension due to the bias of the compression spring 142. To properly position the tensioner assembly 106, an end user typically tensions the banding until the compression spring 142 is compressed a predetermined distance. This distance may be indicated by physical markings on the tensioner, represented by mark 150 on the fastener 140, for example, or by an installation manual. To remove the field device mount, the linear tensioner nut 144 is slowly loosened from the fastener 140, gradually de-energizing the compression spring 142 and removing all potential energy within the linear tensioner 106. Once the compression spring 142 is de-energized, the banding portion (not shown) can be safely removed from the field device mount 100.

[0019] FIG. 6A is a schematic diagram of a clamp leg 102 combined with a vertical tensioner assembly according to one embodiment of the present invention. In a single-band application (as shown in FIG. 3), a single compression spring 160 is used, which guides along the shank 322 of the connector tube extension. The banding section 104 (not shown) loops around band-engaging portions 162, 164 on a tensioner bracket 166, which guides on a central axis at the top of the compression spring 160. When the banding section 104 is tensioned, the compression spring 160 compresses, and the clamp load corresponds to the spring force applied to the clamp leg 102. As with the linear tensioner assembly 106, the banding section 104 is tensioned until the compression spring 160 is compressed a predetermined distance, preferably indicated by a physical mark or measurement provided to the user. To remove this assembly, a jam nut 168, located on the central axis, is tightened against the tensioner bracket 166 until the spring 160 is further compressed. The compression spring 160 further relieves tension on the banding 104, allowing for safe removal of the banding 104. Once the banding 104 is removed, the jam nut 168 can then be loosened to its original position, safely decompressing and de-energizing the spring 160. Figure 6B is a schematic diagram of the vertical tensioner assembly in a compressed state. The banding generates a force, indicated by arrows 170, 172, against the force of the compression spring 160.

[0020] FIG. 7 is a schematic diagram of a field device mount according to another embodiment of the present invention. While previous embodiments have been described with respect to vertical or linear tensioners using compression springs, other types of biasing members may be used. As shown in FIG. 7, a series of stacked disc springs 200 are used in a vertical single-band tensioner assembly. Because disc springs 200 of this form factor have a significantly higher spring constant than comparable wave or coil springs, using a series of stacked disc springs can achieve both a sufficiently large spring force and spring travel distance suitable for use with a variety of installation methods, including both indirect mounting and integrally mounted field device assemblies (as shown). The field device 201 is coupled to the junction tube 105 and includes a field-hardened enclosure 203 and a local display 205, which significantly increases the mass that requires support. Compared to the field device mounting 120 having a compression spring 160, the greater clamping force and effectiveness of the field device mounting 603 having a series of Belleville springs 200 allows the field device 201 to be mounted directly to the fluid handling equipment 101 instead of requiring indirect installation.

[0021] Figure 8 is an enlarged schematic cross-sectional view of a portion of the vertical single band tensioner assembly shown in Figure 7. Figure 8 shows how washers having a conical shape can be used in alternating orientations to create disc spring assemblies of any size. The conical shape gives each washer its resilient effect, creating a high spring constant assembly when stacked together.

[0022] 9 is a schematic diagram of a vertical tensioner assembly according to another embodiment of the present invention. As shown in FIG. 9, the vertical single-band tensioner assembly may also utilize a leaf spring 202 as a biasing member. The leaf spring 202 extends along the clamp leg 102 and helps the field device mounting resist vibration along the axial direction of the fluid handling equipment 101, while also ensuring that the banding remains tensioned during expansion and contraction.

[0023] 10 is a schematic diagram of a field device mount according to another embodiment of the present invention. As an alternative method for mounting to relatively small line sizes, the clamp leg 102 is biased against the fluid handling device 101 by a v-bolt clamp 204. As shown, the v-bolt clamp 204 has a generally "v" shape and a pair of threaded ends 206, 208 that pass through an opening in a beam 210. A fastener, such as a nut 212, is threaded on the ends 206, 208 to create a large clamping force between the clamp leg 102 and the fluid handling device 101.

[0024] FIG. 11 is a schematic diagram of a field device mount according to another embodiment of the present invention. The design illustrated with respect to FIG. 11 is similar to that illustrated in FIG. 3, with like components numbered similarly. However, the embodiment illustrated in FIG. 11 differs from the embodiment of FIG. 3 in several important respects. The field device mount 300 includes an inset 302 disposed between the fluid handling device 101 and the band 104 and clamp legs 102. The inset 302 acts as a corrosion barrier (primarily against galvanic corrosion) between the fluid handling device 101 and the band 104 and clamp legs 102. The inset 302 includes a notch for a sensor and optional retention tabs that attach together to hold the inset in place. The field device mount 300 also includes a jam nut 168 and stacked Belleville springs 200 as an improvement over the compression spring 160 of FIG. 3. 11, the field device mount 300 utilizes a modified tensioner bracket 304 having a pair of ears 306, 308 configured to receive respective removable pins (e.g., clevis pins) 310, 312. When the banding portion 104 is tensioned, the tensioner bracket 304 transfers force to the disc springs 200 until the proper installation tension is achieved. The removable pins 310, 312 allow for rotation of the band and are retained by fasteners such as c-clips (shown in FIG. 13) to hold the pins 310, 312 to the tensioner bracket 304 while also allowing for safe removal and reuse.

[0025] Figure 12 is a cross-sectional view of the field device mount 300 shown in Figure 11. As shown, the mount 302 includes a gap 320 adjacent to the handle 322. Additionally, the handle 322 also includes a centering mechanism 324 configured to ensure that a temperature sensor inserted into the mounting assembly is centered within the handle 322, thus achieving substantially perpendicular contact with the exterior surface of the fluid handling equipment 101. This perpendicular contact is important to ensure accurate temperature measurements. As seen in Figure 12, a seal 326 is provided within the interface tube 105 to prevent intrusion of the field device 201 (not shown).

[0026] As shown in Figures 11 and 12, the modified tensioner bracket 304 provides significant stiffness and aids in locating the spring edges. Additionally, the tensioner bracket 304 also includes ears 306, 308 for removable pins 310, 312. The tensioner bracket 304 has a substantially flat underside for disc spring contact and includes sides formed as locating features around the first set of washers in the stack of disc springs 200. The parallel ears 306, 308 have holes for the removable pins 310, 312 that hold the banding sections to the tensioner bracket 304.

[0027] Figure 13 is a schematic perspective view of the clamp leg 102 under tension in a vertical tensioner assembly according to one embodiment of the present invention. As shown in Figure 13, a pair of parallel ears 306, 308 are configured to receive removable pins 310, 312 that are held in place by fasteners 340, 342. Also shown in Figure 13, the tensioner bracket 304 includes a pair of opposing side walls 350 that extend downwardly around the outer diameter of the disc spring 200.

[0028] 14 is a schematic diagram illustrating pin rotation during installation. As shown, the banding portion 104 is turned on the pin and then pulled together within the buckle 380 (shown in FIG. 12). When tension is applied to the banding portion 104, each side is pulled, allowing the removable pins 310, 312 to rotate within the tensioner bracket 304. This allows the banding portion 104 to rotate around the removable pins 310, 312, thereby resulting in uniform tension being applied to the tensioner bracket 304 and the disc spring 200.

[0029] FIG. 15 is an unassembled view of a field device mount according to one embodiment of the present invention. As shown in FIG. 15, the pin 310 is engaged with the banding portion 104. However, the banding portion 104 is not yet engaged with the removable pin 312. The banding portion 104 includes a loop that is passed between the ears 308, while the removable pin 312 is also passed through the ears 308 and the loop of the band 104. A fastener 340 is then engaged on the removable pin 312 to hold the removable pin 312 in its installed position. The removable pin allows for safe removal of the banding portion and field device mount. Removal of the pin and banding portion is accomplished by threading the tension nut 168 down and removing the retaining fastener 340 and removable pin 312 from the tensioner bracket 304. The tension nut 168 is threaded down the stem 322, thereby further compressing the disc spring 200 below the tensioner bracket 304. The additional spring compression releases the banding section 104 from tension, allowing the assembly to move freely for safe removal. The ability to remove the banding section after installation provides great value to the end user, as they do not need to completely disassemble the device to move it or require a new banding section. The assembly can then be reinstalled in an alternate location with minimal installation time and effort. For reinstallation, after the banding section is positioned around the pipe, the pin and retaining fastener are simply reinserted into the tensioner bracket 304, and the tension nut 168 is threaded back onto the top of the shank 322, thereby releasing the additional spring tension and returning it to the banding section, holding the field device mount as originally installed.

[0030] FIG. 23 is a schematic diagram of a field device mount according to one embodiment of the present invention. FIG. 23 illustrates a key feature for proper installation that ensures maximum benefit from the tensioning mechanism in the field device mount 300 when minimal torque or force is required on the disc spring 200. Most industrial banding tools and applications do not require a specific installation torque or force, and known banding tools do not have indicators for torque or force levels. To provide a specific amount of force, embodiments provided herein can include physical markings 150 located on the handle 322 or linear tensioner 106 (shown in FIG. 5B ) to indicate the appropriate tension / spring compression. The markings can be calculated based on the spring force and correlated to a selected amount of compression in the biasing member. For example, the markings can correlate to the compression of the disc spring for ideal installation.

[0031] FIG. 16 is a schematic cross-sectional view of a field device mount according to one embodiment of the present invention. FIG. 16 illustrates key features of the shape of seal 326. When used in conjunction with the above-described embodiments, seal 326 is achieved by a cylindrical seal (i.e., a wiper seal) that receives a temperature sensor located at the end of mating tube 105 of stem 322, preventing ingress into the field device and enclosure. Those skilled in the art may utilize alternative seal designs to provide ingress protection to the field device. Seal 326 allows the field device mount to be installed in an orientation such as down a pipe where water may accumulate inside the clamp legs without draining. Seal 326 allows the assembly to maintain ingress protection.

[0032] FIG. 17 is an enlarged schematic view of a portion of a field device mount according to one embodiment of the present invention. As shown in FIG. 17 , as an improvement, the field device mount preferably includes a centering mechanism 324 configured to receive a temperature sensor 372 and including an opening 370 for centering the temperature sensor 372 within the shank 322. As designed, the centering insert is installed within the shank 322 and is retained by expanding into an internal groove within the shank 322. The centering mechanism 324 is used to align and center the temperature sensor 372 for improved surface contact, which is required to ensure consistent heat transfer to the sensor tip and more accurate temperature measurements. FIG. 17 also illustrates the operation of a seal 326 that seals against the outer diameter of the temperature sensor 372.

[0033] FIG. 18 is a schematic diagram of a buckle for use in conjunction with embodiments of the present invention. Buckle 380 may be used with any or all of the various embodiments described herein. Buckle 380 is preferably molded and includes a set screw 382. Securing the banding section is accomplished by applying torque to set screw 382 on banding section 104 through molded buckle 380. Cup point set screws are preferably used, although knurled cup point and other types may be applied to provide increased clamping loads. By utilizing a set screw to hold the banding section in place, the same banding section can be tensioned multiple times and to accommodate multiple line sizes. Those skilled in the art may also utilize alternative buckle designs as a secure attachment method for banding section 104.

[0034] FIG. 19 is a flow diagram of a method for mounting a field device according to one embodiment of the present invention. Method 400 begins at block 402, where a field device mount is installed on fluid handling equipment. Next, at block 404, a single band is threaded through a buckle. The buckle may be a known buckle used in standard banding processes or may be an alternative buckle, such as one that allows for easy removal of a set screw to release the banding. At block 406, the single band is looped over a first band-engaging portion of a tensioner assembly, such as a vertical tensioner assembly. At block 407, the single band is then threaded around the fluid handling equipment to which the field device will be mounted. Once the single band has been passed around the fluid handling equipment, it is looped through a second band-engaging portion of the tensioner assembly, as shown in block 408. Next, an end of the single band is threaded through the buckle again, as shown in block 410. At block 412, the band is tensioned until a selected amount of tension is achieved, as shown in block 412. The selected amount of tension may be indicated by markings on the field device mount, as shown in block 414, or by measuring spring compression, as shown in block 416. Other ways of determining the exact amount of tension may also be used, as shown in block 418. If additional bands are to be applied, as in the embodiment shown with respect to FIG. 2, method 400 repeats for the next band, as shown by dashed line 420. Method 400 may be performed with the field device coupled to the field device mount when method 400 is performed, or may be coupled to the field device after method 400 is completed.

[0035] FIG. 20 is a schematic diagram of a field device mount according to another embodiment of the present invention. The field device mount 500 includes a vertical tensioner assembly with a combined buckle-tensioning mechanism 501, as described above. In this embodiment, the tensioning mechanism is a ratcheting device within the combined buckle-tensioning mechanism. Using the buckle-tensioning mechanism 501, the tension on the band 104 is increased until a marker or appropriate indication of tension is displayed on the field device mount 500. The ratcheting-based embodiment works well for large fluid handling equipment 101, including large pipeline sizes, tanks, and irregularly shaped vessels. The advantage of the ratcheting tensioning mechanism is that the field device mount has a built-in tensioning mechanism instead of having to have an additional tensioning device to secure the banding portion 104.

[0036] Figure 21 is an expanded view of a field device according to one embodiment of the present invention shown in Figure 20. In the illustrated example, the embodiment shows engagement of the buckle-tensioning mechanism 501 as a combination buckle and ratchet type device that contacts the fluid handling equipment 101. The buckle-tensioning mechanism 501 has a built-in ratchet feature that tensions the banding 104, allowing the field device mount 300 (not shown) to be installed without the need for a banding tensioning tool.

[0037] Figure 22 is a schematic diagram of a field device mount according to another embodiment of the present invention, showing a field device mount 300 assembled to a large fluid handling device 101 utilizing a ratcheting buckle-tensioning mechanism 501.

Claims

1. A field device mounting body, a coupling pipe configured to couple to a field device; a clamp leg coupled to the interface tube, the clamp leg configured to engage a fluid handling device; a tensioner assembly coupled to the clamp leg and including a tensioner bracket; a biasing member positioned to bias the tensioner bracket away from the clamp leg; a band configured to pass around the fluid handling device and couple to opposite sides of the tensioner bracket; and a buckle coupled to the band and configured to provide a clamping force to maintain tension on the band.

2. The field device mount of claim 1 , wherein the buckle is configured to receive both ends of the band.

3. The field device mount of claim 2 , wherein the band is configured to loop around a band engagement portion on each side of the tensioner bracket.

4. The field device mount of claim 3 , wherein each band engaging portion includes a pin.

5. 5. The field device mount of claim 4, wherein each pin is rotatable.

6. 6. The field device mount of claim 5, wherein each pin is removable.

7. The field device mount of claim 5 , wherein each pin includes an end configured to receive a fastener.

8. The field device mount of claim 1 , further comprising a corrosion-resistant inset configured to be disposed between the fluid handling equipment and the band and clamp legs.

9. The field device mount of claim 1 , wherein the biasing member comprises a stack of Belleville springs.

10. 2. The field device mount of claim 1, wherein the biasing member comprises a leaf spring extending along the clamp leg.

11. The field device mount of claim 1 , wherein the biasing member is a compression spring.

12. The field device mount of claim 1 , further comprising a jam nut engaged to urge the tensioner bracket against the biasing member to reduce tension on the band.

13. 2. The field device mount of claim 1, wherein the tensioner bracket includes a pair of opposing side walls spaced apart to receive an outer diameter of the biasing member.

14. The field device mount of claim 1 , wherein the clamp legs include a chevron-shaped profile.

15. The field device mount of claim 1 , further comprising a centering mechanism disposed within the field device mount and configured to center a field device inserted within the field device mount.

16. The field device mount of claim 1 , further comprising an ingress seal disposed within the field device mount and configured to seal against a field device inserted within the field device mount.

17. The field device mount of claim 1 , wherein the field device mount includes markings on the biasing member, the markings indicating an appropriate amount of clamping force.

18. The field device mount of claim 1 , wherein the buckle is molded and includes a set screw.

19. A field device mounting body, a coupling pipe configured to couple to a field device; a clamp leg coupled to the interface tube, the clamp leg configured to engage a fluid handling device; a first band configured to pass around the fluid handling device and the clamp legs and to couple to opposite sides of a first linear tensioner; a second band configured to pass around the fluid handling device and the clamp leg and to couple to a second linear tensioner; Each linear tensioner includes a biasing member positioned to bias engaged portions of the bands toward one another.

20. 20. The field device mount of claim 19, further comprising a corrosion protection inset configured to be disposed between an outer surface of the fluid handling equipment and the band and clamp legs.

21. 20. The field device mount of claim 19, wherein the biasing member is a compression spring.

22. 20. The field device mount of claim 19, further comprising a jam nut for each linear tensioner positioned to reduce tension from both the biasing member and the band.

23. 20. The field device mount of claim 19, wherein the clamp legs include a chevron-shaped profile.

24. 20. The field device mount of claim 19, further comprising a centering mechanism disposed within the field device mount and configured to center a sensor inserted within the field device mount.

25. 20. The field device mount of claim 19, further comprising a seal disposed within the field device mount and configured to seal against a sensor inserted within the field device mount.

26. 20. The field device mount of claim 19, wherein each linear tensioner includes markings on the biasing member, the markings indicating an appropriate amount of clamping force.

27. A field device mounting body, a coupling pipe configured to couple to a field device; a clamp leg coupled to the interface tube, the clamp leg configured to engage a fluid handling device; a beam coupled to the clamp leg; a v-bolt disposed around a portion of the fluid handling device and configured to couple to the beam; a pair of fasteners engaged with the v-bolts for contacting the clamp legs to the fluid handling equipment.

28. 30. The field device mount of claim 27, further comprising at least one biasing member positioned to bias the beam away from the clamp leg.

29. 30. The field device mount of claim 28, wherein the biasing member comprises a stack of Belleville springs.

30. 30. The field device mount of claim 28, wherein the biasing member is a compression spring.

31. 30. The field device mount of claim 28, further comprising a jam nut engaged to urge the beam against the biasing member to reduce tension on the beam.

32. 30. The field device mount of claim 27, wherein the beam includes a pair of opposing side walls spaced apart for receiving a positioning feature of the clamp leg.

33. 30. The field device mount of claim 28, wherein the beam includes a pair of opposing side walls spaced apart to receive an outer diameter of the biasing member.

34. 30. The field device mount of claim 28, wherein the field device mount includes markings on the biasing member, the markings indicating an appropriate amount of clamping force.

35. 30. The field device mount of claim 27, further comprising a corrosion protection inset configured to be disposed between an outer surface of the fluid handling equipment and the beam and clamp leg.

36. 30. The field device mount of claim 27, wherein the clamp legs include a chevron-shaped profile.

37. 30. The field device mount of claim 27, further comprising a centering mechanism disposed within the field device mount and configured to center a sensor inserted within the field device mount.

38. 30. The field device mount of claim 27, further comprising a seal disposed within the field device mount and configured to seal against a sensor inserted within the field device mount.

39. 1. A method of coupling a field device attachment to fluid handling equipment, the method comprising: Installing the field device mount relative to the fluid handling equipment; Passing a single band through the buckle, looping the single band through a first band engagement portion of the field device mount; passing the single band around the fluid handling device; looping the single band through a second band engagement portion of the field device mount; joining the ends of the single band through the buckle; and applying tension to said single band until a selected amount of tension is achieved.

40. 40. The method of claim 39, wherein applying tension comprises applying tension until a marking on the field device mount is visible.

41. 40. The method of claim 39, wherein applying tensioning force comprises applying tensioning force to a measured distance on a biasing member of the field device mount.

42. A field device mounting body, a coupling pipe configured to couple to a field device; a clamp leg coupled to the interface tube, the clamp leg configured to engage a fluid handling device; a vertical tensioner assembly coupled to the clamp leg and including a tensioner bracket; a biasing member positioned to bias the tensioner bracket away from the clamp leg; a band configured to pass around the fluid handling device and couple to opposite sides of the tensioner bracket; and a ratcheting tensioning mechanism configured to provide a clamping force to maintain tension on the band.

43. 43. The field device mount of claim 42, wherein the band is configured to loop around a band engagement portion on each side of the tensioner bracket.

44. 44. The field device mount of claim 43, wherein each band engaging portion includes a pin.

45. 45. The field device mount of claim 44, wherein each pin is rotatable.

46. 45. The field device mount of claim 44, wherein each pin is removable.

47. 46. ​​The field device mount of claim 45, wherein each pin includes an end configured to receive a fastener.

48. 43. The field device mount of claim 42, further comprising a corrosion protection inset configured to be disposed between the fluid handling equipment and the band and clamp legs.

49. 43. The field device mount of claim 42, wherein the biasing member comprises a stack of Belleville springs.

50. 43. The field device mount of claim 42, wherein the biasing member comprises a leaf spring extending along the clamp leg.

51. 43. The field device mount of claim 42, wherein the biasing member is a compression spring.

52. 43. The field device mount of claim 42, further comprising a jam nut engaged to urge the tensioner bracket against the biasing member to relieve tension on the band.

53. 43. The field device mount of claim 42, wherein the tensioner bracket includes a pair of opposing side walls spaced apart to receive an outer diameter of the biasing member.

54. 43. The field device mount of claim 42, wherein the clamp legs include a chevron-shaped profile.

55. 43. The field device mount of claim 42, further comprising a centering mechanism disposed within the field device mount and configured to center a field device inserted within the field device mount.

56. 43. The field device mount of claim 42, further comprising an ingress seal disposed within the field device mount and configured to seal against a field device inserted within the field device mount.

57. 43. The field device mount of claim 42, wherein the field device mount includes markings on the biasing member, the markings indicating an appropriate amount of clamping force.

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