Selection of pressure sensors/transmitters

pressuresensor
1、 Product Usage
This product is widely used in the fields of petroleum, chemical, sewage treatment, constant pressure water supply, environmental protection, machinery, metallurgy, power, military, etc. for measuring gauge pressure, absolute pressure, and can also measure negative pressure. It is suitable for measuring and controlling the pressure of various liquids, gases, and vapors in all-weather environments in various occasions.

2、 Product Features
(1) Good stability, with a long-term stability of 0.2% FS/year at zero position. Compensating for temperature-30～70℃Within the range, the temperature drift is below 0.2% FS, within the allowable rangeworkBelow 0 within the temperature range.5%FS。

(2) Can be used to measure liquids, gases, and vapors that react with 316 stainless steel.

(3) Solid state structure, no movable parts, high reliability, service lifelong.

(4) From wind pressure to water and oil, high-precision measurements can be made without being affected by the mass of the measured medium.

(5) Easy to install, simple structure, economical and durable.

3、 Working principle
Pressure sensor acquisitionusepressblockThe formula principle is manufactured through silicon micro machining technology, and the pressure sensitive chip adoptsPrecision chipThe chip issealInstalled inside a 316L stainless steel casing, andpourchargesiliconOil and medium pressure are applied to the stainless steel isolation diaphragm and transmitted to the sensitive chip through silicone oil, thereby outputting a voltage signal that varies linearly proportional to the pressure. After conversion by an amplification circuit, current and voltage outputs are achieved.

4、 Technical parameters

1.Measurement range: -100KPa-0-100MPa (optional)
2.Maximum overload: 1.5 times the rated pressure

3.Forms of pressureGauge pressure, absolute pressure, negative pressure

4.Accuracy level:0.2%

5.Power supply voltage: 12～36VDC

6.Load resistance: ≤500Ω

7.Measurement medium:Liquid, gas, steam

8.Long term stability: 土0.2% F.S/年
9.ambient humidity：≤90%

10.Working temperature: -30～70℃

11.shellmaterial:stainless steel
12.Pressure interfaceM20 * 1.5 (or customized)

13. Transmitter output: 4-20mA

Note: If the medium temperature exceeds 70'C, high-temperature accessories should be selected.

5、 Wiringmethod

1. Red:power supply+2. Blue:signal4-20mA

6、 Installationuse
(1) Choose a location that is easy to operate and maintain for installation.

(2) Installation should be kept away from vibration sources as much as possible.
(3) It should be installed as far away from heat sources as possible.
(4) The Husman type operation cannot rotate at the connection between the Husman joint and the housing.
(5) During installation, check whether the on-site interface is consistent with the product based on the product connection method and thread type，When connecting, tighten slowly and do not apply torque directly to the transmitter housing, only to the six sides of the pressure interface.
(6) Medium of installation locationcanThe static pressure that can be generated cannot exceed the range of the transmitter. If there is instantaneous overpressure in the pressure system, the overload range of the transmitter should meet the system requirements and be equipped with a buffer valve. The cutoff pressure of the transmitter cannot exceed 1.5 times the range.

(7) The measuring medium should be compatible with the structural material of the transmitter

(8) The measuring medium should not block the inlet hole of the transmitter
(9）If you encounter any problems during product installation and use, please contact our company. If any abnormalities are found in the product, the power should be turned off, the use should be stopped, and inspection should be carried out, or you can directly contact our company.

7、 Debugging
The transmitters have been strictly calibrated before leaving the factory,useUsers do not need to calibrate themselves. fromYuThe sensor diaphragm is filled with silicone oil, so the installation position is different, which will generate a certain pressure on the sensor chip. The maximum pressure that can be generated is 200Pa (such as forward and reverse). At this time, a reset operation is required.

8、 Ordering Notice
1. The usage environment of the transmitter 2. Range 3. Connecting thread

4. Measurement medium 5. Supply voltage 6. Output signal

7. Medium temperature 8. Accuracy 9. Display mode

10. Electrical interface11. Protection level