Reference manual for the JOFRA CTC‑155/350/660 A/C compact temperature calibrator covering setup, operation, safety and specifications.
The JOFRA CTC‑155/350/660 A/C compact temperature calibrator is a portable dry‑block instrument for industrial temperature calibration. This reference manual provides detailed instructions for receiving, setting up, operating, maintaining, and servicing the calibrator, as well as safety guidelines and warranty information.
The manual is organized into sections on safety symbols, hardware interface, operating procedures (including auto‑step and switch‑test functions), error messages, and a full list of technical specifications and accessories. Technical data such as dimensions, power requirements, temperature range, resolution and accuracy are listed for each model variant.
| Dimensions (CTC‑155 A/C) | 248 × 148 × 305 mm |
|---|---|
| Weight (CTC‑155 A/C) | 5.5 kg |
| Power supply (all models) | 90‑127 VAC / 180‑254 VAC, 47‑63 Hz |
| Power consumption (CTC‑155 A/C) | 130 VA max. |
| Maximum temperature (CTC‑155 A/C) | 155 °C |
| Minimum temperature (CTC‑155 A/C) | -7 °C |
| Resolution (all models) | 1 / 0.1 / 0.01 °C |
Safety symbols are used to highlight warnings, cautions and notes that must be followed to avoid personal injury or material damage.
The calibrator contains two main fuses with specified current and voltage ratings.