Signal Isolator, Temperature Input, K/B/S/PT100

This analog isolator accepts thermocouple (K, E, S, B, J, T, R, N, WRe) and RTD (Pt100, Cu50, Cu100, BA1, BA2, 2/3-wire) inputs. It provides isolated output options: 4‑20mA, 0‑20mA, 0‑5V, 1‑5V, 0‑10V, with load capacity 550Ω for current and ≥1MΩ for voltage. Accuracy varies by type: thermocouples achieve ±0.1% FS or better, RTDs ±0.1% FS, with cold junction compensation ±1°C and 40ppm/°C drift. As a signal conditioner 4‑20mA, it supports single or dual outputs (≤0.7W or ≤1.3W), response time ≤0.5s, and 1500VAC isolation. Powered by 18‑32V DC, it includes DIN‑rail mounting, output ripple <5mVrms, and complies with IEC 61326‑1. Suitable for precise temperature signal conditioning in automation.

Feature

• TC Accuracy: K/E/J/N ±0.3°C below 300°C / ±0.1% FS above; S/B/T/R/WRe ±0.5°C below 500°C / ±0.1% FS above.
• Cold Junction Compensation: Built-in ±1°C CJC eliminates external probes and extra compensation leads.
• Temperature Drift: ultra-low 40ppm/°C drift delivers double the stability of standard 100ppm units across wide ambient temperature swings.
• RTD Lead Resistance: 3-wire RTD accepts up to 20Ω per lead, enabling ordinary copper wire runs of up to 100 meters.
• Response Time: fast ≤0.5s response ensures real-time temperature control and reliable interlock triggering for critical processes.
• Power Consumption: low power draw of 0.7W single or 1.3W dual output at 24V DC, with one input driving two isolated channels.

Dimension (Unit: mm)

Wiring Diagram