Mastercool 52228 Differential Thermometer | 2 x Type K Probes | T1-T2 | HVAC/R
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Mastercool 52228 Digital Differential Thermometer — 2 x Type K Probes | T1, T2 & T1−T2
The Mastercool 52228 is a digital differential thermometer designed for HVAC/R technicians who need to measure two temperatures simultaneously and calculate the difference between them. It displays T1, T2, and T1−T2 in real time — useful for measuring temperature split across an evaporator coil, supply and return air differential, or temperature difference across any two points in a refrigeration or air conditioning system.
Two 3-foot Type K thermocouple probes are included. The Type K input also accepts other compatible Type K probes for different measurement applications.
Confirm all specifications — including measurement range, accuracy, and probe compatibility — against the Mastercool 52228 manufacturer’s current datasheet before ordering.
Key Features
- Simultaneous T1 and T2 measurement with real-time T1−T2 differential display
- Temperature range: -50°C to 1,300°C (-50°F to 1,999°F)
- Resolution: 1°C / 1°F
- Type K thermocouple input
- 2 x 3-foot Type K thermocouple probes included
- Temperature display in °C or °F
- Max hold function
- Data hold function
- AUX output jacks
- Large, easy-to-read digital display
- Battery operated
Best For
- HVAC/R technicians measuring temperature split across evaporator coils and air handling units
- Supply and return air temperature differential measurement
- Measuring temperature difference across any two points in a refrigeration or AC system
- Technicians who need simultaneous dual-point temperature measurement with differential display
Check Before Ordering
- Confirm probe compatibility — the 52228 uses Type K thermocouple input; confirm your probes are Type K compatible
- Confirm measurement range and accuracy against the Mastercool 52228 datasheet for your application
- Confirm warranty terms with HVAC Trade Supply at time of purchase
Frequently Asked Questions
What does T1−T2 differential display mean?
The 52228 displays T1 (probe 1 temperature), T2 (probe 2 temperature), and T1−T2 (the difference between the two) simultaneously in real time — useful for measuring temperature split across a coil or between supply and return air without manual calculation.
Can I use other Type K probes with the 52228?
Yes — the 52228 accepts standard Type K thermocouple probes. Confirm probe compatibility before ordering additional probes.
What is the warranty?
Confirm current warranty terms with HVAC Trade Supply at time of purchase.
Browse our full HVAC test and measurement range or contact our team for advice.