Capacitance pressure sensor
Mainly Technical indicators
Useful object liquid, gas or steam
Measuring range see type spectrum table
Positive-negative offset Maximum positive offset is 500%, Maximum negative offset is 600%
Positive negative zero migration of DP √P is ±10% of flow range. AP type only has mass positive offset and is 500%
Temperature scope Operating temperature of filling silicon oil measuring element -40~104°C Operating temperature of filling inertia oil measuring element -18~71°C Storage temperature -51~121°CRelative humidity 1~100%
Volume variables less than 0.16 cm3
Insensitivity zone None
Stability don’t exceed the accuracy of the transmitter within 6 months
Temperature influence at maximum measure(e.g. 0~40kPa)
Zero error is ±0.5%55°C
Total error (include span and zero error—the same below) is ±1%55°C
Note DP3 for twice of above-mentioned influence,
zero error of DR2 at the maximum measure (0~7.46 KPa) is ±1%28°C,total error is±1%28°Cof span
For DP √P type transmitter is at high span, only considering total error of which value is±2.5%55°C
At minimum range(e.g. range 4 0~6kPa)
Zero error is ±3%55°C
Total error is ±3.5%55°C
Note DP3 for twice of above mentioned influence
Static pressure influence static pressure influence for DP,DP √P,HP,DR see the following table
DP | √P | HP | DR | |||||
Measuring range code | Measuring range code | Measuring range code | ||||||
4,5 | 3,6,7,8 | 4,5,6,7,8 | 3 | 4,5,6,7 | 2 | |||
Zero error | span error | Zero error | Span error | Zero error | Span error | |||
≤±0.25% | ≤±0.5% | ≤±0.25% | ≤±0.5% | ≤±2.0% | ≤±0.25% | ≤±1.0% | ≤±0.75% | |
Per 13.9MPa | Per 6.9MPa | Per 31MPa | Per 6.9MPa | Per 6.9MPa |
Capacitance pressure sensor