Manual | Teqd-2301b

Compensates for known sensor errors. If an accurate thermometer reads 100°C but the Teqd-2301b reads 99°C, set PV.OS = 1.0.

| Problem | Possible Cause | Solution | |---------|----------------|----------| | LCD blank, no LEDs | Power off | Check L/N (85–265V AC), fuse F1 (2A slow) | | Erratic input reading | Loose thermocouple wire | Re-tighten terminals 4-5; use shielded cable | | Output stuck at 4mA | Range scaling mismatch | Verify high/low range ≠ identical values | | No Modbus response | Wrong baud rate | Default 9600,8,N,1. Check termination resistor (120Ω) | | Alarm not triggering | Hysteresis too wide | Reduce hysteresis (default 5 units) | Teqd-2301b Manual

This is the most referenced part of any Teqd-2301b Manual. It includes: Compensates for known sensor errors

Typical terminal assignment:

Tip: Make a laminated copy of the wiring diagram from the manual and keep it with the device. This is the most referenced part of any Teqd-2301b Manual

To keep your Teqd-2301b running for a decade or more, the manual recommends: