DatasheetDescription
The P121 pressure transmitter is designed for use in harsh industrial environments. It features a high-resolution ceramic sensor, ATEX certification, and numerous configuration options. DNV certified, the sensor also finds use in marine applications and provides excellent mechanical resistance. The ceramic sensor element is resistant to aggressive and abrasive media. The capacitive measuring principle enables a very accurate and long term stable measurement, even at lowest pressures and high overload resistance. The process connection is made of high-quality stainless steel 1.4404 and is therefore suitable for almost all media. For highly aggressive chemicals, variants in PP or PVDF are recommended. Our modular design concept provides a wide variety of products. Feel free to contact us if you need a customization that is not listed in this datasheet.
Applications:
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Technical data:
| Measuring ranges | Smallest measuring range: 0…40 mbar |
| Largest measuring range: 0…250 bar | |
| Negative pressure measuring range: up to -1 bar | |
| Analog output | 4…20 mA, 2-wires |
| 4…20 mA, 2-wires, II 1G Ex ia IIC T4 Ga | |
| 0…10 V, 3-wires | |
| Power supply | 20 mA output: 9…30 V DC |
| 20 mA output ATEX: 12…30 V DC | |
| 10 V output: 15…30 V DC | |
| Accuracy | ≤ ± 0,2 % FS @ 25 °C |
| ≤ ± 0,5 % FS @ 25°C ≤ 60 mbar | |
| ≤ ± 0,5 % FS @ 25°C ≥ 100 bar | |
| Long term stability | ≤ ± 0,15 % FS / Year |
| Response time | 200 ms – others on request |
| Swich-on time | < 1 s |
| Temperature coefficient | Zero: ≤ ± 0,015 % FS / Kelvin |
| Span: ≤ ± 0,01 % FS / Kelvin | |
| Medium temperature | -40…100 °C (125 °C < 0,5 h) |
| -20…80 °C with EX ia IIC T4 | |
| Surrounding temperature | -25…80 °C |
| -20…80 °C with EX ia IIC T4 | |
| Storage temperature | -40…85 °C |
| Short-circuit resistance | Permanent |
| Reverse polarity protection | Protection against reverse polarity, but no function |
| Electromagnetic compatibility | Interference emissions and immunity acc. to EN 61326 |
| Vibration | 4g with 3-axis resonance frequency according to DIN EN 60068-2-6:2008 |
| Wetted materials | Process connection: Stainless steel 1.4404 |
| Sensor: Ceramic Al2O3 | |
| Sensor seal: FPM (Viton), NBR, EPDM, FFKM (Chemraz / Kalrez) | |
| Protection type | IP 65 |
| IP 67 for cable version | |
| Weight | Approx. 260 g |
