LOW COST TEMPERATURE TRANSMITTER
SEM104 SERIES
The SEM104 series is a (4 to 20) mA temperature sensor transmitter which can be housed in a head mount DIN standard
connector. The SEM104P for Pt100 and SEM104TC for Thermocouple inputs are field rangeable if necessary by links on the
printed circuit board and the use of on board SPAN and ZERO potentiometers.A wide selection of compatible probe assemblies
are available with various immersion lengths and process connections.
Output
Loop Supply
Max. Loop Load
Loop Volts Sensitivity
Temp. Stability
Ambient Temperature*
Ambient RH
EMC Compatibility
Other ranges can be configured by the use of links on the SEM
PCB, full details are supplied with each transmitter.
RANGE °C
-30 to 35
-25 to 75
0 to 50
0 to 100
0 to 150
0 to 200
0 to 400
0 to 600
0 to 800
0 to 1000
I N T R O D U C T I O N
S P E C I F I C AT I O N S @ 2 0 ° C
LOW COST
USER RE-RANGEABLE
Pt100 INPUT
THERMOCOUPLE INPUT K, T OR J
TWO WIRE (4 TO 20) mA OUTPUT
2 YEAR WARRANTY
SEM104P
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Zero
Span
SEM104K
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(4 to 20) mA loop powered,
maximum 30 mA
(10 to 30) VDC reverse
connection protected
(V.Supply -10)
10 µA/V
Drift type. 0.02 %/°C FRO
Type. 0.005 %/C FRO
(0 to 70) °C operating
(*at 24 V supply 250 Ω load)
(0 to 95) % RH non condensing
BS EN61326
0.020
SEM104T
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SEM104J
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SEM104P PLATINUM RESISTANCE SENSOR
Pt100 Input
Accuracy
Response
Offset Adjustment
Span Adjustment
SEM104K, T OR J THERMOCOUPLE SENSOR
(ISOLATED JUNCTION)
Output
Accuracy
Response
Offset Adjustment
Span Adjustment
Impedance
Burn Out
Cold Junction
BS EN 60751, DIN43760
± 0.2 °C plus ± 0.2 % rdg
100 ms to reach 70 % of final value
Range dependant
(25 to 500) °C
(4 to 20) mA (directly
proportional to mV input)
± 0.1 %FS plus cold junction
errors non-linearised
100 ms to reach 70 % of final value
± 100 °C, solder link
and potentiometer
(100 to 1000) °C
> 1 M Ω
Up scale standard.
Downscale by link
Automatic (0 to 70) °C
Accuracy 0.2 °C @ 20 °C
Tracking + 0.05 °C/°C