UEI Test Instruments
Dual Differential Thermometer
The DTK2 is a professional dual-input K-type thermometer for HVAC/R, refrigeration, heating, ventilation and service diagnostics.
Technical snapshot
Key DTK2 measurement specs.
Dual K-type inputs with differential temperature display for fast HVAC/R comparison checks.Dual temperature diagnostics
Measure two points at once and view the differential reading directly.
The DTK2 lets technicians connect two K-type thermocouple probes and compare readings in real time. It can display T1, T2 or T1-T2, making it useful for HVAC/R checks where the temperature difference matters more than either reading alone.
- Dual-input K-type digital thermometer.
- Displays T1, T2 and T1-T2 differential temperature.
- Wide temperature range from -200°C to 1370°C.
- 0.1°C / 0.1°F display resolution.
- Max/Min capture for T1 and T2.
- Data Hold, large LCD, magnetic mount and automatic ice-point calibration.
What it helps check
Use the DTK2 when two readings need to be compared quickly. It is especially handy for HVAC/R diagnostics where supply, return, pipe or coil temperatures need to be checked at the same time.
- Temperature split across supply and return air.
- Pipe temperatures during refrigeration and heating diagnostics.
- Coil performance and general system temperature checks.
Service applications
Built for HVAC/R, refrigeration, heating and ventilation work.
The DTK2 is a practical field thermometer for service technicians who need fast comparative readings. It can support commissioning, maintenance and troubleshooting across heating and cooling systems.
Use it for
Fast comparison readings on site.
The dual-input setup makes the DTK2 useful when a single temperature reading does not tell the full story. Connect both probes, view each channel, then switch to the differential display when comparison matters.
- Commissioning checks when comparing supply and return air temperatures.
- Routine maintenance checks for pipe temperatures, coil performance and service baselines.
- Troubleshooting support when identifying heating, cooling or airflow performance issues.
Dual LCD readings
View two temperature channels at the same time.
The primary display can show T1 or the T1-T2 differential reading, while the secondary display continues showing T2. That makes comparison work quicker during field diagnostics.
Field-ready kit
Supplied with probes, battery, manual and pouch.
The DTK2 includes the meter, two ATT29A K-type bead probes, 9V battery, operation manual and pouch, so the kit is ready for typical HVAC/R temperature checks.
Related test instruments
Linked Kane & UEI products from Omni Tools.
Internal Omni Tools links only — related temperature and psychrometric test instruments.Useful information & documents
DTK2 resources.
Omni Tools product and range links, plus the official UEI DTK2 operation manual.Omni Tools links
Manufacturer documents
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