The TM2ARI8LT is an 8-channel analog input module for the Schneider Modicon M238 controller family. It accepts Pt100 probes (-200 to 600 °C) and Pt1000 probes (-50 to 200 °C), non-differential, with 12-bit resolution. Sampling takes 160 ms per channel; total acquisition period is 320 ms per group plus one controller cycle. Total error is 1 °C for Pt1000 and 4 °C for Pt100, with repeat accuracy of ±0.1 °C. The module draws 90 mA from the 5 V internal backplane and requires an external 24 V DC supply (19.2–30 V limits). Input impedance is ≥10 kΩ; dielectric strength is 500 V between I/O and external supply, 2500 V between I/O and internal logic. Connection is via removable screw terminal blocks for power and sensors separately.
Schneider TM2ARI8LT Analog Input Module, Obsolete
MPNTM2ARI8LT
Obsolete
Schneider Modicon M238 analog input module, 8-channel Pt100/Pt1000, 12-bit, TM2ARI8LT.
$770.66Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Range of product | Modicon M238 logic controller |
| Analogue input type | Pt 100 temperature probe - 200...600 °C non differential Pt 1000 temperature probe - 50...200 °C non differential |
| Product or component type | Analog input module |
| Supply voltage limits | 19.2...30 V |
| Supply voltage | 24 V DC |
| Current consumption | 90 mA 5 V DC internal |
| Electrical connection | 1 removable screw terminal block power supply 1 removable screw terminal block sensors |
| Depth | 2.8 in (70 mm) |
| Width | 3.5 in (90 mm) |
| Height | 3.5 in (90 mm) |
| Supply | External supply |
| Category | US1PC1222531 |
All specifications
| Parameter | Value |
|---|---|
| LSB value | 0.006 °C Pt 1000 0.2 °C Pt 100 |
| Total error | 1 °C Pt 1000 4 °C Pt 100 |
| Input impedance | >= 10 kOhm |
| Repeat accuracy | +/- 0.1 °C |
| Measurement error | +/- 0.3 % of full scale Pt 1000 25 °C +/- 0.5 % of full scale Pt 100 25 °C |
| Sampling duration | 160 ms |
| Acquisition period | 320 ms per group of channel + 1 controller cycle time |
| Dielectric strength | 500 V between the I/O and the external supply circuit 2500 V between the I/O and internal logic |
| Analogue input number | 8 |
| Temperature coefficient | +/-0.01 %FS/°C |
| Analogue input resolution | 12 bits |
| Insulation between channel and internal logic | Photocoupler |
Product details
MPN
TM2ARI8LT