Mud logging sensor named draw work sensor

Mud logging sensor named draw work sensor The sensor is installed on the winch shaft, which can monitor the angular displacement caused by the rotation of the winch shaft during the whole drilling process.


The principle of draw work sensor is equipped with two proximity switches and a 12 tooth induction plate. When the induction plate rotates with the axle, the two proximity switches with phase difference of 90 ° are blocked and turned on respectively, and the corresponding electric pulse signal is sent out for instrument detection.



Power supply voltage: 5VDC ± 10%

Working environment temperature: – 40 ℃ – + 80 ℃

Power consumption: 300mw

Response time: 150us

Output signal: 48 pulses



It has the advantages of small volume, compact structure, good sealing performance, high sensitivity, large output signal, good anti-interference, accurate measurement, convenient and reliable use. It is an economic and practical well depth measurement sensor in petroleum and geological drilling work.



Red wire: power supply positive

Blue wire: signal output II

Yellow wire: signal output I

Black wire: power supply negative



All sensors either are EX type or are intrinsically safe. Zone barriers are installed in the Unit. Using well-known brand products at home and abroad, the sensors of mud logging unit have the advantage of technical and performance indicators. At the same time, the service life is long.



CNPS can ship the goods to you by Express, Air, or sea.



1.Why do you choose our company?

We are trading company, founded a perfect oil and gas equipment product supply chain. We have worked in the oil industry for about 10 years(follow ISO9001 standard).We will checked our mill every months to make sure their quality. The after-service are charged by ourselves.So we can reply any problem within 24 hours.


2. How can you guanranty your quality?

Every time we will inspect our factories first. This inspect will include the persons, the present products, their scale etc. If everything is ok, we will start to cooperate. During cooperation, we will go to the factories to test the products to guanranty the products has good quality. If it doesn’t meet our requirement, the goods will be refused.


3. Do you have price advantage?

For us, the quality is our first consideration. And the second consideration is the price. We couldn’t say we have the lower price, because of quality issue. We need to say we have the best price.


4. How long do you do the export business?

For our sales persons, they have 8-10years experience to do the international business. They understand each step for the export and do good service for each of our clients.

Weight 3 kg


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