Product introduction
Pressure or differential pressure transmitter is widely used for measuring, but remote pressure/differential pressure transmitter is required in the following circumstance: the measured medium coming out from outlet pipe is easy to be solidified or crystallized; the measured medium containing suspended solid or excessively thick so that the pressure impulse pipe is easily jammed; the measured medium is uneasy to measure directly due to high temperature or corrosiveness, etc.; the measured medium is food or other material that requires good sanitary conditions, and cannot be polluted, its basic measuring element is similar to the technical performance and technical index of 3151 pressure/differential pressure transmitter, once remote device is installed, measuring accuracy will be slightly lowered, and reaction speed will be slowed, pay attention to installation position if capillary pipe is more than 10m and pressure is relatively low so as to ensure the measured pressure is within measuring range of basic measuring element.
Technical index
(On the occasion that there is no shift, 316 stainless steel isolation membrane and other standard test)
Accuracy: ±0.2%, ±0.5%
Stability: maximum measuring range×±0.25%/6months
Temperature influence: zero temperature deviation is ±0.5%/55℃ of maximum range
Including total temperature deviation of zero and range is ±1.0%/55℃ of maximum range
Note: range 3 temperature influence deviation shall be doubled.
Static pressure influence: (when DP type is outputting at linear) zero deviation: after adding static pressure 140kgf/cm2, zero point deviation of range 4. 5 is ±0.25% of maximum range, zero point deviation of range of 3. 6. 7. 8 is ±0.5% of maximum range. This is system deviation, before installation, and can be eliminated by calibrating transmitter zero point as per actual static pressure prior to installation.
Power source influence: be less than 0.005%/V of output range
Vibration influence: at any axis, frequency is 200Hz; deviation is ±0.05%/g of maximum range
Load influence: as long as transmitter input voltage is higher than 12V, no load influence will occur in load working zone
Influence of installation position: calibrate to eliminate this deviation and will not bring any influence to range; measuring proper will bring no influence to corresponding flange.
