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Dual Temperature (T1, T2, T1-T2)
Plug any Type K thermocouple directly into the meter to measure
temperature. Test for proper airflow across the evaporator coil by
measuring delta T with the dual temperature inputs.
Insulated cold junction is located inside the meter and allows for
accurate measurements even in rapidly changing ambient temperatures
(going from rooftop to freezer). No adapter is required.
By default, T1 will show on top display and T2 on bottom display. Press
SELECT button once to display T1 on top and T1-T2 on the bottom. Press
SELECT button again to display T2 on top and T1-T2 on the bottom.
Range:
-58°F to 2372°F, (-50°C to 1300°C)
Resolution:
0.1°
Accuracy:
±(1°F)* 32°F to 120°F, ±(1°C) 0°C to 49°C
±(1%+2°F) 32°F to 932°F, ±(1%+1°C) 0°C to 500°C
±(2%+6°F) -58°F to 32°F, ±(2%+3°C) -50°C to 0°C
±(2%+6°F) 932°F to 2372°F, ±(2%+3°C) 500°C to 1300°C
Sensor type:
Type K thermocouple *After field calibration
Overload protection:
30 VDC or 30VAC rms
Change Units (°F or °C)
By default, temperature units are set to Fahrenheit (°F). In
Temperature dial position, press SELECT button for 1 second to toggle
between Fahrenheit (°F) and Celsius (°C).
Unplug Leads and Slide
TEMP Switch to the Right
COM
Temperature Calibration
Thermocouples (T/C) are not calibrated directly. Instead, each T/C jack
(T1 and T2) must be calibrated to the particular T/C that is plugged into it.
Though it’s possible for a calibration to hold for years, it’s best practice to
calibrate regularly if only to verify accuracy. Labelling your T/C, T1 or T2,
will help ensure using the same T/C for T1 and T2 ports.
Calibration is quick and easy, requiring just a known temperature to
calibrate to. Ice water is probably the most accurate and readily available
known temperature (32.0°F, 0.0°C) in the field
.
1. Rotate dial to the °F °C, T1-T2
position.
2. Plug one thermocouple to be
calibrated into the T1 Type K jack.
3. Unscrew A and B and remove the
battery cover.
4. Stabilize a large cup of ice water.
Stir the ice with the water until
temperature stays at a stable value.
5. Immerse the T1 thermocouple
probe and let it stabilize.
Keep stirring water to prevent
thermocouple from direct contact
with ice.
6. Use a small screwdriver to adjust
calibration T1 Temp Cal pot below
the battery as close to 32°F(0°C) as
you would like.
7. Repeat step 2-6 and replace T2 for
T1 for T2 thermocouple.
Note: J1-J2 switch is for factory
calibration purposes only. Do not
switch from J2.
A
B
TEMP
CAL
DO NOT SWITCH
FROM J2
T1
T2
