PT850 Series_Ultra high purity pressure transmitter
Service intended
PT850 series are specially designed for the ultra-high purity gas distribution system used in a semiconductor, electronic, medical, biotechnology and pharmaceutical industry. The transmitter has a water resistant, Stainless steel housing for complete protection from harsh environments. The transmitter offers the convenience and easy installation with the full capabilities of a highly accurate 4~20 mA 2-wire system design. The stainless steel surfaces make it compatible with a wide variety of gases, liquids and can be protected from harsh environment.
It is extremely versatile and suitable for measuring dynamic or static pressure. The pressure to be measured acts through corrosion resistant stainless steel 630 diaphragm with a MEMS Piezoresistive effect sensors which are connected into a Wheatstone bridge. PT850 series pressure transmitter is electrically temperature compensated.
| Technology | MEMS Piezoresistive effect sensor |
| Accuracy | ±0.25 % of full scale |
| Permissible temperature range | Ambient: -20~80 °C (PT851, PT852, PT853) -20~70 °C (PT850) Process: -50~130 °C (PT851, PT852, PT853) -20~100 °C (PT850) |
| Scale range | Refer to range code |
| Enclosure rating | Min IP65 |
| Explosion protection | Ex db IIC T6 Gb / IP65 (Model : PT850) Ex ia IIC T6…T4 (Model : PT851) Ex nA IIC T6…T4 (Model : PT852) |
Standard features
Mechanical
| Pressure connection | Stainless steel 316L electropolished low mount or center back mount surface finish Ra≤0.13 μm (Ra 5) ■ ¼”, ⅜”, ½” (NPT, PT, PF) male thread ■ Male or female face seal fitting ■ Flow through type |
| Material wetted by process | Stainless steel 630 / Hastelloy C22 (Sensor) Stainless steel 316L (Connection) |
Electrical
| Input power | 12~24 VDC |
| Output signal | 4~20 mA DC 2-wire loop powered technique |
| Load resistance max | 500 Ω at 24 V |
| Response time (10 ~ 90 %) | ≤20 milliseconds |
