- Measures volts, mA, RTDs, thermocouples, frequency, and ohms to test sensors, transmitters and other instruments
- Sources and simulate volts, mA, pressure, thermocouples, RTDs, frequency, ohms, and pressure to calibrate transmitters
- Powers transmitters during test using loop supply with simultaneous mA measurement
- Most stable temperature controllers available
- Resolution as high as 0.00018°C
- RS-232 interface included for automating applications
- Accredited radiometric calibration included
- Accurate, reliable performance from –15 °C to 500 °C
- Large target size of 152 mm (6 in) is required for calibrating most thermometers.
- Light instrument weight of 8.6 kg (19 lbs) makes it easy to lift and carry.
- Highly accurate thermo hygrometer and humidity monitor.
- Measure temperature to ± 0.125 °C and humidity to ± 1.5% on two channels.
- Offers networking capabilities via Ethernet or RS-232, connect multiple Fluke 1620s.
- Powerful logging and analysis tools, including the LogWare III software for real-time logging, data storage, and integration with MET/CAL® software.
- Temperature control from 100°C to 1210°C
- Two models to choose from: Reference (ADT878) and Standard (ADT875)
- Display Accuracy of ±1.5°C (ADT878)
- 4 on-board measurement channels (PC option)
- Process calibrator option provides a multi-channel readout for TCs, switches and transmitters, including task documentation and HART communication
- ISO 17025-accredited calibration w/data included
- Measure thermocouples, PRTs, thermistors, DC voltage, DC current, and resistance, with up to 40 isolated universal inputs.
- Precision measurements (PRTs ± 0.005 °C, thermocouples: ± 0.5 °C, thermistors: ± 0.002 °C).
- Scan up to 10 channels per second, great for high-speed applications.
- Four operation modes – Scan, Monitor, Measure, Digital Multimeter (DMM), and features real-time color trending for up to four channels.
- Records up to 20 MB of data and setup files to internal non-volatile memory or an external USB drive, with administrator and user profiles for data protection and test traceability.
- Lightweight, portable, and fast
- Built-in two-channel readout for PRT, RTD, thermocouple, 4-20 mA current
- True reference thermometry with accuracy to ±0.01 °C
- On-board automation and documentation
- Metrology performance in accuracy, stability, uniformity, and loading
- Supports four channels for PRTs, thermistors, and thermocouples, accommodating a variety of sensor types.
- Display eight user-selected data fields from any channel.
- Log up to 8,000 readings with date and time stamps for data tracking.
- 5608: –200 °C to 500 °C (80 mm minimum immersion)
- 5609: –200 °C to 670 °C (100 mm minimum immersion)
- ± 0.01 short-term stability
- Calibration not included, NVLAP-accredited calibration optional, lab code 200348-0
- Dry-well reference with 90 ° bend








