SEM1603 picture

SEM1603 DIN Rail Temperature Transmitter

The SEM1603 is a programmable DIN rail mounted temperature transmitter which accepts either RTD or thermocouple temperature probes and converts their output into the industry standard 4-20mA transmission signal.

Designed for ease of use, this range is configured with our USB port powered configuration module. The module interfaces a PC USB port to the SEM1603, using the 4-20mA loop to communicate. Using our free configuration software, you will be able to read the current configuration data, and then perform any changes you wish to make to the configuration. To further help save time, the SEM1603 and configuration module do not need to be wired to a power supply during the configuration process, both are powered by the USB interface on your PC.


Pt100 or Thermocouple Input
Isolated Input
4-20mA Output
Fully Linearised to Temperature
USB Configurable
4-20mA 2 wire Output

Specification - Inputs

SEM1603 Inputs

Specification - Output

Output Type: Two wire current sink; signal range 4 to 20mA; full range 3.8 to 24mA
Supply: 11 to 30Vdc, 24V nominal giving Max loop load of 600R @ 24V
Accuracy: ± 5 uA
Loop Voltage effect: Loop ripple 0.03% of FSR; Supply sensitivity 0.05uA/°C; supply ripple rejection max. ±5uA error @ 1Vrms 50Hz ripple

General Specifications

Isolation: Input to output tested at 500 V dc.
Response Time: max. 500ms to reach 95% of final value ; Start up time 3s max.
Ambient operating range: -20 to +70°C.
Ambient storage temperature: -40 to +85°C.
Ambient humidity range: 10 to 90% RH non condensing
Approvals: CE tested to BS EN 61326.
IEC 61000-4-4: Transient Burst (output)

Mechanical Drawing

SEM1603 drawing