DPT-21 Programmable 2- wire dewpoint transmitter (-100..+20Cdp)
Product description
The DPT-21 is a transducer that generates a 4 … 20 mA current signal proportional to the humidity of the measured gas. The measuring element is a ceramic capacitive sensor with a wide measuring range and fast response time. The transmitter is calibrated and configured at the factory.
Technical data
| Dewpoint measurement range | -100÷20 °Cdp, -148÷68 °Fdp*, 0.5÷23000 ppm(v) |
| Measurement accuracy | ±2 °Cdp |
| Thermal drift | compensated across operating temperature range |
| Conversion range | 10÷100 % of measurement range – programmable |
| Response time T95 | 1 min (dry to wet) |
| Output signal | 4÷20 mA or 20÷4 mA – programmable |
| Linear region of output signal | 3.8÷20.5 mA |
| Output signal delay after power on | ca 5 s |
| Sensor failure indication | 23 mA or 3,5 mA – programmable |
| Power supply Vs | 8÷36 V DC / 24 mA (from current loop) |
| Maximal load resistance | (Vs[V] – 8) / 0,024 |
| Operating temperature range | -40÷60 °C |
| Maximal operating pressure | 40 MPa |
| Housing material / filte | stainless steel / 5 µm stainless steel sintered guard |
| Ingress protection | IP65 |
| Process connection | external thread 5/8″-18 UNF |
| Dimensions with connector (diameter x length) / weight | 31 x 129 mm / 150 g |
| Accessories (ordered separately | interface IF-2013U-DPT |
| process connection adapter G1/2″-DPT | |
| sampling block SB-DPT |
