ETI 231-022 Therma 2 Channel Differential Thermometer

Note: this thermometer is not supplied as standard with any measurement probes. You can order probes separately (see below for more information, including a downloadable probe guide).

With ETI's Therma Differential thermometer you can measure temperature from two different points simultaneously!

Designed for use with a wide variety of interchangeable temperature probes (type K thermocouple), the ETI Differential thermometer can be used in a wide variety of different applications ranging from measuring the temperature drop on a radiator to measuring the temperature output of different pipes. This product is particularly suted for use by plumbers and HVAC professionals and is ideal for both radiator balancing and HVAC applications.

Using the ETI Therma Differential, you can measure temperature from a single channel (T1 or T2) or you can show the difference in temperature between the two channels (T1-T2).  Temperature can be measured from -99.9 to 299.9°C with resolution of 0.1°C and from 300 to 1372°C with resolution of 1°C.

The ETI Therma Differential thermometer also has the added benefit of being fully waterproof - the thermometer's case is completely sealed against water damage and is rated to IP66 and IP67.

ETI Therma Differential Thermometer Key Features

• Dual-input thermometer - measure temperature from two points simultaneously
• Works with a wide variety of interchangeable type K temperature probes (sold separately)
• Ideal for HVAC work - measure the temperature drop across radiators or the temperature rise and fall of other objects
• Measure from each channel individually (T1 or T2) or measure the difference (T1-T2)
• Temperature measurements from -99.9 to 299.9°C with resolution of 0.1°C and 300 to 1372°C with resolution of 1°C
• Data hold function temporarily stores current values shown on the screen
• MAX/MIN mode calculates the maximum and minimum temperatures taken over a period of time
• Automatic power off helps to save battery life
• 7500 hour battery life on 3 x 1.5V AAA batteries
• IP66 and IP67 rated waterproof case
• 2 year guarantee from ETI

What's Included?

• ETI Therma Differential Thermometer
• Traceable Certificate of Calibration

Please note that measurement probes are sold separately.

Optional Probes

The following is a list of probes compatible with the ETI Therma series. All probes are sold separately - you can order these by searching from the part number using the search box (part numbers in bold) or call our sales team quoting the part number you want.

Please see the brochure further below for more information on each probe.

• 123-160: Penetration Probe (3.3mm Diameter, 130mm Length)
• 323-160: Penetration Probe (3.3mm Diameter, 130mm Length) with Coiled Lead
• 123-168: Penetration Probe (3.3mm Diameter, 300mm Length)
• 323-168: Penetration Probe (3.3mm Diameter, 300mm Length) with Coiled Lead
• 123-159: Fast Response Probe (3.3mm Diameter, 100mm Length)
• 323-159: Fast Response Probe (3.3mm Diameter, 100mm Length) with Coiled Lead
• 123-100: Needle Penetration Probe (1.8mm Diameter, 130mm Length)
• 323-100: Needle Penetration Probe (1.8mm Diameter, 130mm Length) with Coiled Lead
• 133-170: Oven Probe (3.3mm Diameter, 130mm Length)
• 133-173: Oven Probe without Handle (3.3mm Diameter, 130mm Length)
• 123-060: Rigid Between Pack Probe (4.5.mm Diameter, 130mm Length)
• 323-060: Rigid Between Pack Probe (4.5mm Diameter, 130mm Length) with Coiled Lead
• 123-204: High Temperature Probe (1.5mm Diameter, 130mm Length)
• 332-204: High Temperature Probe (1.5mm Diameter, 130mm Length) with Coiled Lead
• 123-212: High Temperature Probe (3mm Diameter, 130mm Length)
• 323-212: High Temperature Probe (3mm Diameter, 130mm Length) with Coiled Lead

Additional probes can also be found in the probe guide (available as a download below).