SEM1500/TC Thermocouple Isolating Transmitter

SEM1500/TC Thermocouple Isolating Transmitter


J, K, N, T, R, S Thermocouple Input

- Current Isolation

- Compact Size Only 12.5mm Wide

- 4-20mA Output

- Rail Mounting

- High Performance


The SEM1500/TC Thermocouple Isolating Transmitter is a universal DIN rail-mounted transmitter designed to accept most thermocouple types, isolate them, and convert them into the industrial standard 4-20mA transmission signal. It provides automatic cold junction temperature compensation for thermocouples. The unit can also accept millivolt inputs ranging from -5 to +50 millivolts.

Specifications: @20℃
Input: J, K, N, T, R, S (selectable conversion)
Millivolt: -5 to 50mV signal
Isolation: Input to output 500VDC (flash test to 1Kv)
Burnout: Amplification standard (DOWN scale to order)
Impedance: >1M ohm
Cold Junction: Automatic cold junction temperature compensation
Accuracy CJ: ±0.2℃@20℃±0.05℃/℃ typical

Output
Type: Passive 2-wire current output
Range: 4-20mA (max 30mA)
Linearity: mV input linearity ±0.02% FRO T/C range is cold junction temperature compensated and directly referenced to T/C mV value
Protection: Reverse connection, overvoltage

General
Power Supply: 10-30V DC
Load Capacity: 700 ohms@24V
Thermal Stability: 2μV/℃ positive cold junction error
Ripple: <40μA/V (accuracy up to 1V ripple 50Hz)
Response Time: 200ms to reach 70% of final value
Temperature: Ambient 0-50℃
Relative Humidity: Ambient 10-95% non-condensing

Accessories
Housing Material: Polyamide (gray)
Housing Flammability: To UL94-VO VDE0304 Part 3 equipped with ⅢA
Mounting: "Top Hat" rail DIN EN50022-35
Protection: IP20
Connection: Fixed screw connection
Cable Size: 4mm solid/2.5mm stranded