The 3B Series of Signal Conditioning I/o Subsystems provide a low-cost, versatile method of transferring analog transducer signals to a data acquisition, monitoring or control system without the inherent noise, non-linearity, drift and extraneous voltages. The modules are designed to directly accept analog signals from Thermocouples, RTD’s, AC and DC.
The 3B37 is a single‑channel signal‑conditioning module that accepts J, K, T, E, R, S, or B‑type thermocouples, amplifies, filters and provides isolated simultaneous voltage (0‑+10 V) and current (4‑20 mA) outputs. It features high‑accuracy internal cold‑junction compensation, +1500 V peak isolation, and can be hot‑swapped without disrupting field wiring.
The module is part of the 3B Series signal‑conditioning subsystems, which use a 10‑inch relay rack with plug‑in modules. Various models support different input types and custom ranges, and the device includes extensive protection features such as ESD and over‑voltage safeguards.
| Isolation voltage | +1500 V peak |
|---|---|
| Current output withstand voltage | 130 V rms |
| Output voltage range | 0 to +10 V |
| Output current range | 4‑20 mA (or 0‑20 mA) |
| Accuracy (voltage) | +0.1 % Span + CJC Sensor Error |
| Temperature operating range | -28 °C to +85 °C |
| Input bandwidth | 0.1 Hz to 10 Hz |
It accepts J, K, T, E, R, S, or B‑type thermocouples.
Yes, the module is hot‑swappable and can be replaced under full power without disrupting wiring.
The module provides up to +1500 V peak isolation.