Description
The SEM203P is our entry level Pt100 temperature transmitter. It converts the sensor output to a standard industrial (4 to 20) mA transmission signal.
The temperature range can be set by simulating a temperature at the low and high end of scale required, and pushing the button to output 4mA at the low end, and 20 mA at the high end. The advantage of this method is that you do not need to connect the product to a computer to carry out this function.
| INPUT SPECIFICATIONS @20°C | ||
| Type/Function | Range/Description | Accuracy/Stability |
| PT100 2 or 3 wire | (-200 to 850) °C | ± 0.2 °C ± 0.05 % of reading *2 |
| Thermal drift | Zero at 20 °C | ±0.02°C/°C |
| Minimum span | 25 °C *1 | |
| Linearization | BS EN 60751(IEC 751) standard
/ JISC 1604 |
|
| Excitation current | Approximately | 1mA |
| Lead resistance | effect 0.002 °C / Ohms | |
| Maximum lead resistance | 20 Ohms per leg | |
| *1 Any span may be used; full accuracy is only guaranteed for spans greater than the minimum recommended | ||
| *2 Basic measurement accuracy includes the effects of calibration, linearization and repeatability | ||
| OUTPUT SPECIFICATIONS @20°C | ||
| Type/Function | Range/Description | Accuracy/Stability/Notes |
| Two wire current | (4 to 20) mA | (mA output /2000) or 5 uA
(Whichever is the greater) |
| Thermal drift | Zero at 20 °C | 2 uA /°C |
| Maximum output current | 21.5 mA | In high burnout condition |
| Minimum output current | < 3.9 mA | In low burnout condition |
| Loop voltage effect | 0.2 uA / V | |
| Maximum output load | [(V supply – 10)/20] KΩ | 700 Ω @ 24 V DC |
| Loop supply | (10 to 30) V DC | SELV |
