Measuring device for measuring oil vapor or other hydrocarbon contents in gas and measuring method

A measurement device and measurement method technology, applied in the direction of measurement device, material analysis by electromagnetic means, instrument, etc., can solve problems such as insufficient accurate measurement, achieve reliable operation and calibration, eliminate zero drift, and flexibly operate and calibrate. Effect
CN110208359APending Publication Date: 2019-09-06SUTO ITEC (CHINA) CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SUTO ITEC (CHINA) CO LTD
Publication Date
2019-09-06

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Abstract

The invention provides a measuring device for measuring oil vapor or other hydrocarbon contents in a gas and a measuring method. The measuring device comprises a PID sensor, and a first gas line and asecond gas line in parallel connection with the PID sensor, wherein one end of each of the first gas line and the second gas line is connected to a sampling gas inlet, and the other end of each is operatively connected to the gas inlet of the PID sensor; the first gas line and the second gas line are provided with a first valve and a second valve for selective switching along a gas flow directionrespectively; a zero point calibration filter is arranged at the downstream of the second valve along the gas flow direction on the second gas line; and the zero point calibration filter is used forfiltering and removing oil vapor or other hydrocarbon in the gas. The device can provide convenient, reliable and flexible operation and calibration, and accurate measurement and measurement error correction can be realized easily.
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Description

technical field

[0001] The invention relates to the field of measuring the content of oil vapor or other hydrocarbons in gas, more specifically, a measuring device and method for measuring the content of oil vapor or other hydrocarbons in gas. Background technique

[0002] To detect gases, such as hydrocarbons in air or compressed air, various sensing technologies exist. Such measuring devices are known with various sensor technologies and are used to detect, for example, the content of oil, hydrocarbons and oxidizable gases in air or compressed air.

[0003] For example, one common approach is to use electrically heated semiconducting oxide materials. The semiconductor oxide changes its resistance in a heated state according to the amount of hydrocarbons contained in the air. The most important advantages of metal-oxide-semiconductor gas sensors include: very high sensitivity and thus the possibility of being able to measure even the tiniest hydrocarbon content down to th...

Claims

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