The Testo 922 Dual Type K Thermometer is specifically designed for HVAC applications, offering precise temperature measurement with two connected thermocouple probes. The instrument simultaneously displays both temperature values along with the calculated differential temperature, providing comprehensive insight into system performance. Wireless data transfer capability allows an additional temperature probe to be integrated, displaying its measurement values remotely.

When protected by the optional TopSafe and with the probe plugged in, the instrument achieves IP65 protection class, making it suitable for demanding field conditions. The continuous display of minimum and maximum values helps track temperature extremes. A hold button freezes the current reading for documentation.

For on-site documentation, the current measurement value, fixed measurement value, or min/max value can be printed using the optional Testo report printer. Cyclic printing with individually settable intervals is also supported, enabling detailed temperature logging. The 2-channel measurement capability and differential temperature display make the Testo 922 an invaluable tool for HVAC system diagnostics, balancing, and troubleshooting.