High Static DP Differential Pressure Transmitter Self Diagnosis

High Static Differential Pressure (DP) Transmitter

1. Overview

Differential pressure transmitters measure the difference between two pressures.

Differential Pressure Transmitter converts pressure measurements, into a proportional 4-20 mA or a 1 – 5 Vdc output signal, that functions as the input to a controller, recorder, indicator or similar device.

These transmitters find application in the gas, water, and process industries that need accurate measurements, over a wide range of environmental conditions.

The most common and useful industrial pressure measuring instrument is the differential pressure transmitter.

s are available, including measurements for differential pressure, flow, absolute pressure, vacuum degree, level, and specific gravity.

2. Features

• Capacitive sensors
• Adopt high-tech machinery processing microelectronics
• The sensors outputs capacitance signal, direct interface with digital systems
• High accuracy, better than ±0.1%(Analogue signal) Linear output: ±0.075%(Digital intelligent signal)
• High turndown ratio: 10:1~100:1
• High stability & reliability
• Good unidirectional over voltage capability
• Improved self-diagnosis & remote setting communication function
• Multi-parameter and multi-methods LED display

3. Technical Parameters

• Accuracy: ±0.5%, ±0.075%
• Dead zone: None(≤0.1%)
• Stability: Less than the absolute value of basic error of maximum range with 6 months
• Vibration Effect: With 200Hz vibration frequency and error that of ±0.05%/g upper limit of measuring range in arbitrary axis.
• Power Supply: <0.005%/V output range
• Load Effect: No load effect under stable power supply

4. Other Parameters

• Isolation Diaphragm: 316L Stainless Steel, Hastalloy C, Monel or Tantalum
• Venting/Drain Valve: 316L Stainless Steel, Hastalloy C, Monel
• Flange & Joint: 316L Stainless Steel, Hastalloy C, Monel
• Contact Medium O-Ring: Chemigum, Fluorous Rubber
• Filliing Liquid: Silicon Oil or Inert Oil
• Bolt: 316 Stainless Steel
• Electronic Shell Material: Low Copper Aluminum Alloy
• Impulse Connection: Flange 1/4NPT, Center Distance 54mm, Joint 1/2NPT or M20*1.5 Male Thread Ball Cone Seal, Center Distance with Joint 50.8, 54, 57.2mm(NPT Spinal Canal Thread According to GB/T12716-91)
• Signal Wire Connection Hole: G1/2’’, M20*1.5
• Weight: 3.9KG(Standard)

5. Configuration

ML3000W Micro Differential Pressure Transmitter:

The max static pressure is 4MPa, the min measuring range is 0-0.125~1.5KPa.

They can shift to a negative pressure transmitter.

Medium:liquid, gas, steam.

6. Details