Mastercool 52228 Dual-Probe Differential Thermometer
The Mastercool 52228 is a digital differential thermometer designed for HVAC and refrigeration technicians who need to measure temperature at two points simultaneously and read the differential in real time. Insert the two Type K thermocouple probes into separate points in the system — supply and return air, suction and liquid lines, inlet and outlet — and the 52228 instantly displays T1, T2 and the T1–T2 differential on its large digital screen.
With a wide measurement range of -50 to 1300°C, Max Hold, Data Hold and AUX output jacks, this is a practical tool for commissioning, fault finding and system performance checks. Browse the full thermometer range or see more Mastercool tools at HVAC Shop AU.
Key Features
- Simultaneous T1, T2 and T1–T2 differential display
- Type K thermocouple input — wide compatibility with standard HVAC probes
- Temperature range: -50 to 1999°F / -50 to 1300°C
- Resolution: 1°F / 1°C
- Max Hold and Data Hold functions
- AUX output jacks for data logging
- Celsius / Fahrenheit selectable
- Includes two 3 ft (approx. 900mm) Type K thermocouple probes
- Battery operated with protective carrying case
Specifications
| Model | 52228 |
| Measurement | T1, T2, T1–T2 differential |
| Input type | Type K thermocouple |
| Range | -50 to 1999°F / -50 to 1300°C |
| Resolution | 1°F / 1°C |
| Functions | Max Hold, Data Hold, AUX output |
| Display | Large digital LCD |
| Units | °C / °F selectable |
What’s Included
- Mastercool 52228 differential thermometer
- 2 × Type K thermocouple probes (3 ft / approx. 900mm each)
- Protective carrying case
- Battery
For single-probe thermometers and IR options, browse the full HVAC thermometer collection. For more Mastercool instruments, see the Mastercool tools range.