SEM 203TC

	PUSH BUTTON TC Selection
	PUSH BUTTON Ranging
	Galvanically Isolated
	Temperature Linear
	Low Cost
	8 Standard Thermocouple Types

PUSH BUTTON THERMOCOUPLE
TEMPERATURE TRANSMITTER
SEM203TC

INTRODUCTION
The SEM203TC is the latest in a series of temperature transmitters from Status Instruments that do not require a PC, trim pots, switches or jumpers in order to calibrate. Instead, the SEM203TC uses a simple push button on the unit to both select the thermocouple type and range the transmitter. The SEM203TC incorporates the latest digital technology assuring drift free linearization, not available with analog designs. Galvanic isolation is standard.

The SEM203TC is available in three versions, each accepting a choice of three different thermocouple types. An on board LED indicates the successful completion of ranging, TC selection and provides indication of sensor health.

Thermocouple Selection

1. Depress and hold button down and then apply power to the unit.
2. Release button.
3. Depress button one, two or three times to select specific thermocouple type. (Model dependant. For Model SEM203TC-1: once for "K", twice for "J", three times for "T"). The LED will blink with each depression. After several seconds the LED will flash the number times corresponding to the TC selected.

Ranging

1. Connect a thermocouple simulator to input and a 24 VDC power supply to output.
2. Set the simulator to the temperature desired at 4ma. Press and HOLD the button down until the LED starts to blink and then release.
3. Set the simulator to the temperature desired at 20ma. Press and release the calibration button. The LED blinks and then stops, confirming the unit is calibrated.

ORDER CODE

.SEM203TC/1 Thermocouples K, J, & T
.SEM203TC/2 Thermocouples R, S, & B
.SEM203TC/3 Thermocouples J, F, & E
.SEM203TC/4 Thermocouples K, N, & R
.For SEM203TC Special Configuration Ranges and Downscale Burnout
.please contact sales office.

SPECIFICATION @ 68 °F
INPUT / OUTPUT SENSORS AND RANGES

.INPUT	.SEM203TC
.Sensor & Range	.SEM203TC/1 .K (-328 to 2498°F) .J (-328 to 2192°F) .T (-328 to 752°F) .SEM203TC/2 .R (0 to 3200°F) .S (0 to 3200°F) .B (0 to 3308°F) .SEM203TC/3 .J (-328 to 2192°F) .F (-328 to 2192°F) .E (-328 to 1832°F) .SEM203TC/4 .K (-328 to 2498°F) .N (32 to 2372°F) .R (32 to 3200°F) .Other combinations available .to special order
.Default Range	.203TC/1 = K (0 to 1832°F) .203TC/2 = R (0 to 2912°F) .203TC/3 = J (0 to 1832°F) .203TC/4 = K (0 to 1832°F)
.Accuracy	.±0.04% FS, ±0.04% Rdg or 0.9°F .(which ever is greater)
.Linearization Standard	.BS4937 / IEC 584-1
.Input / Output Isolation	.50VDC (tested to 200V)
.Cold Junction Error	.±0.3°F
.Cold Junction Tracking	.0.03°F/°F
.Cold Junction Range	.-4 to 158°F
.Thermal Drift	.Zero = ±2.3µV/°F Typical
.Thermal Drift	.Span = 100 ppm
.Sample Rate	.500ms per sample
.Minimum Span	.20°F
.Sensor Lead Length	.Max length 10 feet to Maintain CE Compliance
.Terminals	.Screw Terminals

OUTPUT

.Output Range	.4 to 20 ma - 2 Wire Loop Powered .(Can be ranged 20 to 4 ma)
.Max. Output Range	.3.8 to 22 ma
.Operating Voltage	.8 to 30 V
.Accuracy	.±5 µA
.Burnout	.Up-Scale 22ma (Down-Scale to order) .Red programming LED comes on when .temperature is outside operating range
.Thermal drift	.0.17 µA/°F
.Response Time	.500 ms to Reach 70% of Final Value
.Loop Resistance	.Max. 800 ohms @ 24 VDC
.Loop Sensitivity	.0.4 µA/V
.Protection	.Reverse connection protected
.Terminals	.Screw Terminals
.Warm-up Time	.2 minutes to full accuracy
.Display	.Slow flash indicates programming mode .Full on indicates out of range sensor
.Switch	.Momentary Push Button

APPROVALS

.EMC	.Emissions	.BS EN 50081-1
.EMC	.Susceptibility	.BS EN 50082-2

ENVIRONMENTAL

.Ambient operating range	.-4 to 158 °F
.Ambient storage temperature	.-40 to 194 °F
.Ambient humidity range	.0 to 95% RH (non-condensing)

ENCLOSURE

.Material	.ABS
.Flammability	.UL 94 HB

Calibration Period	.12 months to maintain published specifications. .5 years to twice specifications.
Warranty	.5 years

DOWNLOADS
SEM203TC Instruction Manual

SEM203TC Literature