SEM203P In Head Temperature Transmitter, Push Button Configuration
The SEM203P temperature transmitter is our entry level transmitter. It accepts Pt100 temperature sensors and converts the sensor output to a standard industrial 4 to 20mA transmission signal.
Its temperature range can be set by simulating a temperature sensor resistance 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.
However, if you already know the temperature range you require, we can configure the product for you at no extra cost.
The SEM203 in head transmitter incorporates the latest digital technology to ensure accurate drift free performance.
Mechanical Drawing
Electrical Drawing
- Suitable for Pt100 sensor
- Unique Push Button Configuration without a PC
- Push Button Sensor Matching
- 4 to 20mA Output
- High Stability
- Programmable Burnout
- Can be supplied fitted to our temperature sensors.
| INPUT: | |
| Sensor Type: | PT100 100R @ 0°C 2 or 3 Wire. |
| Sensor Range : | -195 to +845°C (18 to 390Ω) |
| Sensor Connection: | Screw terminal |
| Minimum span (*1) : | 25 °C |
| Linearisation: | BS EN 60751(IEC 751) standard / JISC 1604 |
| Measurement Accuracy (*2) : | 0.2 °C ± 0.05% of Reading. |
| Thermal Drift: | ±0.02 °C / °C. |
| Excitation current: | |
| Lead Resistance effect: | 0.002 °C / Ohm. |
| Maximum lead Resistance: | 20 Ohms per leg. |
| OUTPUT: | |
| Output Type: | 2 wire, 4 to 20mA current loop. |
| Output range: | 4.0 to 20.0mA |
| Output Connection : | Screw terminal |
| Maximum output: | 21.5mA (in high burnout condition) |
| Minimum output: | |
| Accuracy: | (mA output /2000) or 5 uA (Which ever is the greater) |
| Loop Voltage effect: | 0.2 uA / V. |
| Thermal drift: | ±2 uA / °C |
| Maximum output load: | [(Vsupply-10)/21]K Ohms (Example: 700 Ohms @ 24V) |
Note *1 Any span may be selected, full accuracy is only guaranteed for spans greater than the minimum recommended.
Note *2 Basic measurement accuracy includes the effects of calibration, linearisation and repeatability.
| Update time: | 500 ms. |
| Response Time: | 1 second |
| Start up time: | 4 seconds ( I out < 4 mA during start up) |
| Warm-up time: | 1 minute to full accuracy |
| Power Supply : | 10 to 30 Volts dc |
| Ambient operating range: | -40 to +85°C [Full Accuracy only between -30 to +75°C]. |
| Ambient storage temperature: | -50 to +90°C. |
| Ambient humidity range: | 10 to 90% RH non condensing |
| Dimensions: | 43 mm diameter; 21 mm height. |
| Weight: | 31 g (encapsulated). |
| APPROVALS: | |
| EMC – BS EN 61326: | Electrical equipment for measurement control and laboratory use. |
| ANNEX A: | Immunity test requirements for equipment intended for use in industrial locations |
| ANNEX F: | Test configurations, operational conditions and performance criteria for transducers with integrated or remote signal conditioning. |
| IEC 61000-4-2: | Electrostatic discharge |
| IEC 61000-4-3: | EM Field |
| IEC 61000-4-4: | Transient Burst (output) |
| IEC 61000-4-5: | Surge (output). |
| Note – Sensor input wires to be less than 3 metres to comply. |
