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ETI Therma Differential Thermometer
  • ETI Therma Differential Thermometer
  • ETI Therma Differential Thermometer
  • ETI Therma Differential Thermometer

ETI Therma Differential Thermometer

ETI Approved distributor

Includes: Housed in a durable, ABS case that incorporates an integrated rubber seal to ensure complete water tightness.

Tax excluded
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The Therma Differential digital thermometer allows the user to use two type K thermocouple probes simultaneously. The display can be switched to show probe T1 or T2 temperature or the difference between probes T1 and T2 (T1-T2). This allows, for example, the temperature drop across radiators or the temperature rise or fall of two items to be measured.

The Therma Differential measures temperature over the range of -99.9 to 299.9 °C with a 0.1 °C resolution or 300 to 1372 °C with a 1 °C resolution. The thermometer features a custom, LCD display with °C, T1, T2, diff, hold, open circuit, low battery indication and an optional backlight.


Robust waterproof case offering IP66/67 protection.
Ideal for radiator balancing or HVAC applications.
Designed for plumbers, reliable & easy to use.
Backlight, max/min & hold functions.
Probe NOT included.

ETI Therma Differential Specifications
Range 0.1°C: -99.9 to 299.9°C
1°C: 300 to 1372°C.
Resolution 0.1°C to 299.9°C thereafter 1°C.
Accuracy ±0.4°C ±0.1% of reading.
Battery 3 x 1.5 volt AAA.
Battery Life 7500 hours.
Sensor type K thermocouple.
Display 15mm LCD.
Backlight Yes.
Case ABS plastic with Biomaster anti-bacterial additive.
Protection IP66/67 protection.
Dimensions 32 x 71 x 141 mm.
Weight 220g.
ETI Therma Differential warranty 2 years.


ETI Therma Water/Diff Specs

PDF Instructions of the ETI Therma Waterproof and Therma Differential Thermometer.

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ETI Therma Differential Thermometer
Probe Pipe clamp temperature probe for use in the HVAC sector. range -10 to 100°C, for pipes from Ø6 to 30 mm. 133-040
Probe PTFE wire temperature probe. Range -75 to 250°C, Ø1.5 x 1000 mm / 2000 mm. 123-030
Probe Waterproof surface temperature probe. Range -75 to 250°C, Ø8 x 130 mm. 123-046
Protective Boots Protective silicone boots for ThermaQ and Differential thermometers.. 830-258
Wall Bracket Therma Waterproof stainless steel wall bracket. 832-015

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