The T121 is a converter for Thermoresistance (mA, mV, Pt100, Pt1000, Pt500, Ni100, TC's, Ohm) with 2, 3, 4 wires and convert/isolate it into 4 to 20 mA loop powered signal. It's completely configurable through PC software. T121 is suitable for in-head mounting (RTD or TC). A 2-way galvanic isolation among input and output circuits assures the integrity of your data.

RTD Input: Pt100 (EN 60751/A2, -200 to +650 °C, min span 20 °C), Ni100 (-60 to +250 °C, min span 20 °C), Ni100 (-60 to +250 °C, min span 20 °C), Pt500 (2, 3, 4 wire -200 to +650 °C), Pt1000 (2, 3, 4 wire -200 to +200 °C)
TC Input: J, K, R, S, T, B, E, N Type
Potentiometer Input: 450 to 1.800 Ohm
Voltage Input: -150 to +150 mV
Output: 4 to 20 or 20 to 4 mA, 2 wire

Power Supply:
Load Resistance:
A/D Resolution:
Over Range Output:
Fault Output:
Current Output Protection:
Rejection:
Max Transmission Error:
EMI:
Cable Resistance:
Temperature Coefficient:
Sampling Time:
Response Time (10 to 90%):
Protection Degree:
Approvals:
Operating Temperature:
Humidity:
Storage Temperature:
Electrical Connection:
Wire Size:
Wire Skinning:
Housing:
Dimensions:

7 to 30 V
1 kΩ @ 26 VDC, 21 mA
2 μA (> 13 bit); max 16 bit
102.5% of full scale
105% of full scale
30 mA, about
50-60 Hz
0.1% (of full scale) or 0.1 °C
< 0.5%
0.005 Ω/Ω
< 100 ppm (30 ppm typical)
300 ms
< 620 ms
IP 20
CE, EN 61000-6-4, EN 61000-6-2
-30 to +85 °C
30-90% @ 40°C(non condensing)
-40 to +105 °C
Spring Clamps
0.2 to 2.5 mm²
8 mm
Nylon / Glass
20 mm Ø43.7 mm