The HH804 thermometer is the basic version and doesn’t come with wireless or USB interfaces.

The HH804U thermometer is a high-precision RTD input thermometer. It works with 100 Ω platinum RTDs and offers three different temperature coefficient curves to choose from. The HH804U meets the ITS-90 standard and comes standard with a built-in USB port and DC power jack. Optional Windows software and an AC adapter allow you to record data to a PC in real time over an extended period.

HH804/HH804U Thermometer Features

The HH804 dual-channel platinum resistance thermometer is the basic version.  

The HH804U dual-channel platinum resistance thermometer comes with a USB interface.

Dual-channel thermometer, dual-channel platinum resistance thermometer, high-precision RTD thermometer, supports PT100 100 Ω platinum resistance probe input (probe sold separately).

0.00385/0.003916/0.003926 curves  

3-wire or 4-wire RTD  

High-precision reading ±0.05%, 0.2°C  

Includes NIST traceable calibration certificate (no data points)  

*Max/*Min/Average/Relative/Hold  

Run time  

High/Low alarm (sound)  

Dual temperature display  

Equipped with 4-pin mini DIN plug (one per channel)  

Optional Windows® software  

Optional AC adapter (only for HH804U)