Monocrystalline Silicon Direct Connect Pressure Transmitter

088 Economy Transmitter Features

1、Absolute pressure and gauge pressure measurement range-0.1 to 40MPa

2, 0.20% reference accuracy (including linearity, hysteresis and repeatability), high reliability, high stability

3、Adjustable zero and range; laser resistance temperature compensation

4, optional liquid crystal meter head (scale adjustable)

5、Compact, lightweight, easy to install and transportation

6, stable, reliable, easy to maintain, anti-radio frequency interference

7、No installation position influence

Main technical indicators

1、Transmitter applications Applicable to 316L diaphragm non-corrosive liquids, gases, pressure and level measurement.

2、Mounting thread M20 × 1.5 (standard factory configuration) and 1/2NPT male thread optional

3、Process sealing The design of the product ensures that even if the sensor diaphragm is damaged or malfunction, the transmitter can still work safely. The electronics side (chamber) has two levels of sealing to isolate the transmitter from the process.

The electronics side (chamber) is isolated from the process by two seals, and the third seal realizes isolation from the field terminals and conduit inlet. The design and location of the process seals make the transmitter housing pressure-resistant and protect it from process contaminants.

The design and location of the process seal make the transmitter housing pressure resistant and prevent process impurities from entering through the conduit from the terminal side.

The product is designed as a double chamber housing. The dual chamber housing isolates the electronics from the external environment and prevents damage to the transmitter due to ambient humidity or condensation on the conduit.

Transmitter. Conduit sealing is generally not required. In addition, the dual chamber construction keeps the terminals and conduit isolated from the process, even in the event of total sensor head failure.

In addition, even if the sensor diaphragm head is completely damaged, the double chamber structure can ensure that the terminal and conduit are isolated from the process.

5, pressure sensor diaphragm isolation diaphragm pressure to the silicon piezoresistive pressure sensor, the sensor is filled with silicone oil. For gauge pressure transmitters, the reference pressure of the sensor is atmospheric pressure; for adiabatic pressure transmitters, the reference pressure of the sensor is atmospheric pressure.

For the gauge pressure transmitter, the reference pressure of the sensor is atmospheric pressure; for the adiabatic pressure transmitter, the reference pressure of the sensor is a sealed vacuum reference source; the process pressure is added to the sensing diaphragm of the sensor, making the diaphragm produce a small deformation.

The process pressure is applied to the sensing diaphragm of the sensor, causing a small deformation of the diaphragm, which imparts a stress on the Whisden bridge inside the sensor, causing the bridge to strain resistance.

The change in resistance is measured and converted to a 4-20mA DC current change for output.

6、Electronic circuit board module The electronic circuit adopts ASIC (special-purpose integrated circuit) and surface package technology. The electronic board receives the temperature-compensated resistance change signal from the sensor membrane head and corrects and linearizes the signal to output a DC current signal.

The electronic board receives the temperature-compensated resistance change signal from the sensor membrane head, corrects and linearizes the signal, and outputs a DC current signal.

7, reference accuracy ± 0.5% of the calibration range, including linearity, hysteresis and repeatability effects.

8、Ambient Temperature Impact Within the range of -40 ~ 85 ℃ overall impact: ± (0.3% URL +0.3% check range)/56 ℃

9、Range range -0.1 to 40MPa

10, overpressure limit 2 times FS (<3.5MPa); 2.5 times FS (≥3.5MPa)

11, process temperature limit Silicon oil sensor: -40 to 120 ℃

12、Electrical interface M20×1.5

13、Process liquid connection parts Isolation diaphragm: 316L stainless steel; process connector: 316 stainless steel

14、Electronic enclosure Low copper alloy aluminum, in accordance with NEMA4X

15、Labeling The transmitter will be free to play stainless steel labeling according to the requirements of OEM users.