Marine Pressure Instrument
MDM490 Piezoresistive Differential Pressure Transmitter
Features: Full stainless steel construction, compact size, easy installation. Laser welding, full-sealed construction. protection IP65. Using piezoresistive differential pressure sensor, 316...
Key Highlights
Technical Specifications
Features:
Full stainless steel construction, compact size, easy installation.
Laser welding, full-sealed construction. protection IP65.
Using piezoresistive differential pressure sensor, 316L isolated diaphragm.
Temperature compensation and aging, stable performance.
Zero and span adjustable outside.
Ex-proof version MDM490 conforms to GB3836.4 standard. ex-proof certificate is approved.
Ship-use product conforms to CCS Rules of Classification of Sea-going Steel Ships（2006）. ship-use certificate is approved.
CE and ROHS certificates
Introduction:
MDM490 uses piezoresistive differential pressure sensor as sensing element. Silicon oil is filled in between die and two diaphragms, when measured differential pressure is added on two diaphragm, the pressure could be transferred onto die through silicon oil. Sensor die connects with amplifier circuit through wires, using semi-conductor’s piezoresistive effect, transforming differential pressure signal into electric signal. The whole product is used for differential pressure measurement of petroleum, chemi-industry, power station and hydrology, etc.
Specification:
| Min. | Typ. | Max. | Unit | ||
| Accuracy | 0～100kPa | 0.25 | 0.5 | %FS | |
| 200～3500kPa | 0.25 | 0.5 | |||
| Zero Thermal error | 0～100kPa | 0.75 | 1.25 | ±%FS, @25℃ | |
| 200～3500kPa | 0.5 | 0.75 | |||
| FS Thermal error | 0～100kPa | 0.75 | 1.25 | ||
| 200～3500kPa | 0.5 | 0.75 | |||
| Stability | ≤200kPa | 0.5 | %FS/year | ||
| ≤3500kPa | 0.2 | ||||
| Static pressure effect | 0.05 | ±%FS, each 100kPa | |||
| Compensation temp. | 0～50 | ℃ | |||
| Operation temp. | -10～80 | ||||
| Storage temp. | -40～120 | ||||