Additel ADT878PC-425-NO-220V Temperature Calibrator, 33 to 425 °C Reference Dry Well with Process Calibrator Option
Additel ADT878PC-425-NO-220V Temperature Calibrator, 33 to 425 °C Reference Dry Well with Process Calibrator Option
Additel ADT878PC-425-NO-220V Temperature Calibrator
Overview
The ADT878PC is the Process Calibrator version of Additel's 878 reference dry-well series, which covers -40 to 700 °C across three models. The PC option adds an external reference input plus a two-channel readout for RTDs and thermocouples, along with mA/VDC measurement and switch testing, turning the dry well into a complete temperature and process calibration station.
The 425 model covers 33 to 425 °C at 23 °C ambient (per the 2026 datasheet revision) with ±0.2 °C display accuracy across the full range and stability of ±0.010 °C at 100 °C. An automated self-calibration routine aligns the internal control sensor to an external reference, keeping long-term drift out of your uncertainty budget.
Features
- Reference dry-well range 33 to 425 °C (at 23 °C ambient)
- Display accuracy ±0.2 °C at full range
- Stability ±0.010 °C at 100 °C; ±0.015 °C at 225 °C; ±0.020 °C at 425 °C (30 min)
- Process Calibrator option: RTD and 2 TC channels, mA/VDC, switch test
- Automated self-calibration of internal control sensor
- Heats 23 to 425 °C in 15 minutes
- External reference input for traceable comparison
- 220 V AC power (model ADT878PC-425-NO-220V)
Applications
- Reference calibration of RTDs and thermocouples
- Calibration of process sensors and temperature switches
- Laboratory temperature reference and comparison checks
Additel ADT878PC-425-NO-220V Temperature Calibrator Technical Specifications
| Temperature range (at 23 °C ambient) | 33 °C to 425 °C |
|---|---|
| Display accuracy | ±0.2 °C at full range |
| Stability (30 min) | ±0.010 °C at 100 °C; ±0.015 °C at 225 °C; ±0.020 °C at 425 °C |
| Radial uniformity | ±0.025 °C at 100 °C; ±0.030 °C at 225 °C; ±0.040 °C at 425 °C |
| Axial uniformity | ±0.10 °C at 100 °C; ±0.15 °C at 225 °C; ±0.25 °C at 425 °C |
| External reference sensor accuracy | ±0.01 °C at 100 °C; ±0.02 °C at 425 °C |
| Heating time | 15 min (23 to 425 °C) |
| Process calibrator inputs | External RTD reference, 2 TC channels, mA/VDC, switch test |
| Insert / well diameter | Insert OD 31.9 mm (1.26 in) |
| Environmental | 8 to 38 °C guaranteed accuracy; 0 to 50 °C operating, 0-90% RH |
| Storage temperature | -20 to 60 °C |
| Power | 220 V AC (ADT878PC-425-NO-220V) |
Manufacturer information: ADT878 datasheet on additel.com.