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Tianjin Runda Zhongke Instrument Co., Ltd

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    243474068@qq.com

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    15922247994

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    16-1 Jingdong Intelligent Industrial Park, Xiqing District, Tianjin City

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On site installation method of flange diaphragm pressure transmitter
Date: 2025-12-15Read: 11

On site installation: Following the principles of "anti-interference, sealing, and easy maintenance"

The installation position and method of the flange diaphragm pressure transmitter directly affect the measurement stability, and it is necessary to focus on avoiding problems such as temperature fluctuations, vibrations, and medium retention:

Installation location selection

Priority installation inThe medium flows smoothly, without bubbles or eddiesOn pipelines or containers (such as the side of horizontal pipelines and the middle of vertical pipelines), avoid approaching pump outlets or valve throttling points (which can easily cause impact);

If measuring high-temperature media (>100 ℃), additional installation is requiredCondensation bend/isolation tank(Fill with isolation fluid, such as glycerin or silicone oil) to prevent high temperature damage to the transmitter core;

Avoid installation inStrong electromagnetic interference(such as frequency converters, high-voltage cables) orIntense vibrationIf it is impossible to avoid the area near the motor, electromagnetic shielding (grounding) or installation of shock absorber brackets is required.

Flange connection steps

Clean the sealing surface of the flange: Wipe the sealing surfaces of the pipeline flange and transmitter flange with a dust-free cloth to remove oil stains and impurities (to prevent seal failure and leakage);

Place sealing gaskets: Select gaskets based on the characteristics of the medium (such as PTFE gaskets for corrosive media and graphite gaskets for high-temperature media), ensuring that the gaskets are centered and not offset;

Bolt tightening: Adopt the "diagonal uniform tightening" method (tightening in 2-3 times), with a torque that meets the flange specification requirements (such as DN50 PN1.6 flange, bolt torque of about 25-30N · m), to avoid local over tightening that may cause flange deformation or diaphragm damage.

Pressure conduit and wiring (for differential pressure type)

Specification of pressure conduit: inner diameter ≥ 8mm, length ≤ 10m, horizontal section slope ≥ 1:10 (for easy drainage/exhaust); When measuring liquids, the positive pressure side pressure tube should be lower than the negative pressure side (to prevent bubble retention), and the opposite is true when measuring gases;

Wiring requirements: The power line (such as 24VDC) and signal line should be wired separately. After passing through the waterproof joint, the cable should be tightly sealed with a nut. The wiring terminals should be connected correctly according to the "positive and negative poles" (reverse connection may burn out the circuit). The shell should be reliably grounded (grounding resistance ≤ 4 Ω).

Note: Due to differences in instrument configuration and functionality, the reference price may deviate significantly from the actual price,selectionquotationAnd delivery timePlease call our sales consultant for consultation,Thank you!