XT630 diffused silicon pressure transmitter Chinese name Smart diffused silicon pressure transmitter range -0.1 to 40MPa applications of liquid, gas measurement Humidity Limits 0-100% relative humidity 1. Features 1.1 Process secret XT630 diffused silicon pressure transmitter designed to ensure that even when the sensor membrane is damaged or fails, the transmitter can still work safely. Electronic circuit side (room) has two seals and process isolation, the third-stage sealing achieved with field wiring terminals and conduit entry phase isolation. The design and location of the sealing process makes the pressure transmitter housing, and to prevent impurities from the terminals through the conduit into the side. 1.2. The dual-chamber structure diffused silicon pressure transmitter housing XT630 inherited TSK51 series of design tradition of dual-chamber housing design. Dual chamber housing for electronic circuit is isolated from the external environment, due to the humid environment to prevent condensation damage the transmitter or conduit. Generally do not require conduit seal. Further, even when the sensor head and the membrane is completely damaged, the dual chamber structure and to be guaranteed with the terminals and the conduit is isolated from the process. 1.3. The pressure sensor diaphragm Diaphragm pass silicon piezoresistive pressure sensor, filled with silicone oil within the sensor. For the gauge pressure transmitter, pressure sensor for the reference atmospheric pressure; for absolute pressure transmitter, a reference pressure sensor is a sealed vacuum reference source. Process pressure applied to the sensor sensing diaphragm, so the diaphragm produces a small deformation, which will give a Wheatstone bridge sensor within a stress is applied, so that a Wheatstone bridge strain produces resistance change, the change in resistance is measured and converted to a 4 ~ 20mA DC current variation is output. 1.4. The electronic circuit board electronic circuit module using ASIC (Application Specific Integrated Circuit) and surface mount technology. After the change in resistance of the temperature compensation signal by the electronic board receiving sensor film head, and correcting the signal linearized, output a DC current signal. 2. Performance Specifications (zero reference calibration range, reference conditions, silicone oil filling, 316L stainless steel diaphragm) 2.1 Reference Accuracy ± 0.2% or 0.5% calibration range, including linearity, hysteresis and repeatability 2.2 Environment The overall impact of temperature (-40 to 85 ℃):. ± (0.3% URL + 0.3% calibration range) / 56 ℃ 3. 3.1 applications function index liquid, gas measurement range of -0.1 to 3.2 40MPa 3.3 overvoltage. Limit 2 times FS (<3.5MPa) 2.5 times FS (≥3.5MPa) 3.4 process temperature limit silicone sensor: -40 to 120 ℃ 3.5 Ambient temperature limit without LCD meter: -40 to 85 ℃ with LCD meter : -20 to 60 ℃ 3.6 storage temperature limit without LCD meter: -46 to 110 ℃ with LCD meter: -40 to 70 ℃ 3.7 Humidity Limits 0-100% relative humidity 4. Physical Specifications 4.1 electrical interface. . 1 / 2-14NPT 4.2 Process Interface 1 / 2-14NPT, M20 × 1.5 (CM20) male optional 4.3 wetted process isolating diaphragm:. 316L stainless steel process connection: 316 stainless steel