# What is a Dead Weight Tester used for?

**URL:** <https://forumautomation.com/t/what-is-a-dead-weight-tester-used-for/12045>\
**Category:** Pressure Measurement\
**Tags:** interviewquestions\
**Created:** [May 7, 2024, 5:03pm UTC](https://forumautomation.com/t/what-is-a-dead-weight-tester-used-for/12045 "2024-05-07T17:03:34Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Sundar\_Iyalunaidu](https://forumautomation.com/user_avatar/forumautomation.com/sundar_iyalunaidu/32/7404_2.png) [@Sundar\_Iyalunaidu](https://forumautomation.com/u/Sundar_Iyalunaidu)\
**Post date:** [May 7, 2024, 5:03pm UTC](https://forumautomation.com/t/what-is-a-dead-weight-tester-used-for/12045/1 "2024-05-07T17:03:35Z")

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What is a Dead Weight Tester used for? ![image](https://cdn.forumautomation.com/original/2X/4/44af388b9d13d61c2bcabf5a11d5df6afe84392a.jpeg)

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**Author:** ![Instrument\_Engineer](https://forumautomation.com/user_avatar/forumautomation.com/instrument_engineer/32/6734_2.png) [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\
**Post date:** [May 10, 2024, 2:20pm UTC](https://forumautomation.com/t/what-is-a-dead-weight-tester-used-for/12045/2 "2024-05-10T14:20:12Z")

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A Dead Weight Tester is a precision instrument used to calibrate pressure gauges, transmitters, and other pressure sensing devices. It operates on the principle of Pascal’s law, where pressure is directly proportional to force over area. **Purpose:**

- Calibration: Primarily used for calibrating pressure gauges, transmitters, and other pressure sensing devices.

**Working Principle:**

- Pascal’s Law: Pressure is directly proportional to force over area.
- Known Mass: Utilizes a known mass (dead weight) placed on a piston-cylinder assembly.
- Pressure Generation: Dead weight exerts force downwards, creating pressure within the piston-cylinder assembly.
- Pressure Transfer: Pressure generated is transferred to the device under test (DUT) through a fluid connection.

**Applications:**

- Industries: Commonly used in oil and gas, aerospace, manufacturing, and research laboratories.
- Precision: Provides highly accurate and reliable calibration results.

Dead Weight Testers are indispensable tools for maintaining the accuracy of pressure instruments in various industries. .

Click here for [How to calibrate the pressure gauge using pressure gauge,](https://automationforum.co/what-is-pressure-gauge-and-how-is-pressure-gauge-calibrated-2/)