Product Description
T280 2-Wire Transmitter
The T280 2-Wire Transmitter is an isolated, 2-wire temperature and mV input transmitter designed to fit in a standard industrial thermal-head. The T280 supports Pt-100 RTD and thermocouple inputs as well as voltages up to 100mV. Thermocouples supported include B, E, J, K, L, N, R, S and T. If thermalhead mounting is not required, the T280 can either be mounted directly on a bulkhead or to a DIN rail using the included DIN rail clip.
Three different series make up the T280 family. The –1xxx units are for Pt-100 RTD inputs. The default configuration from the factory is 3-wire, but the units can be easily reconfigured for 2-wire, as explained in the installation instructions. The –2xxx units are for thermocouple inputs and the –3xxx units are for millivolt inputs.
The list of model numbers shows our most popular ranges. Contact the Technical Services Group for information about other ranges.
Input
- Thermocouple: B, E, J, K, L, N, R, S, T
- RTD: Pt-100, 2-wire or 3-wire
- mV: 100mV max.
- Input Span
- Thermocouple: 5mV min. span
- RTD: 20°C min. 500°C max.
- mV: 5mV min span
- Adjustability: ±15% for both zero & span
Output Span
4-20mA, limiting @ <28mA
Burnout Detection
Upscale
Linearity
- Thermocouple/mV: Better than ±0.1% of span, linear to mV inpu
- RTD: Better then ±0.1% of span, linear to temperature
Stability
- Thermocouple/mV: 0.02% of span/°C (25mV input)
- RTD: 0.02% of span/°C (100°C span)
T/C CJC
<0.05°C/°C of ambient temperature
Isolation
1000VDC
Supply Voltage
10 to 40VDC polarity protected
Maximum Load
Rmax = (Vsupply – 10V)/20mA
Operating Temperature
-20°C to +70°C
Humidity
0 to 95% RH, non-condensing
Agency Approvals
CE Compliance per EMC directive 89/3/36 EEC
