TRACEABLE Two-channel Thermometer With Offsets Instructions
- June 6, 2024
- TRACEABLE
Table of Contents
TRACEABLE® TWO-CHANNEL THERMOMETER WITH OFFSETS
INSTRUCTIONS
SPECIFICATIONS
| Range: | –58 to 2000°F (–50 to 1300°C) |
|---|---|
| Resolution: | 0.1° |
| Accuracy: | ±0.3% + 0.1°C |
| Probe: | (2) Type-K thermocouple naked bead probe with 4′ lead |
| Sampling Rate: | 2.5 times per second |
| Display: | 3½ digit LCD, 5/8 inches high (1.5CM) |
| Failsafe: | Low battery indicator |
| Power: | 9-volt alkaline battery |
| Accessories: | 12-inch wrist strap, rubberized cover, and a flip-out |
stand
FRONT PANEL QUICK REFERENCE
ON| Turns power on
OFF| Turns power off
MAX| Records and updates maximum values
HOLD| “Freezes” the display
F/C| Selects the temperature to be displayed in either Fahrenheit
or Celsius
T1| Displays temperature reading from probe 1
T2| Displays temperature reading from probe 2
T1/T2| Displays the difference in temperature
between probe 1 and probe 2
OPERATION
Insert the probe plugs into the receptacles located on the front of the
thermometer. The plugs and receptacles are keyed with small and large pins.
Make certain that the plugs are inserted correctly, do not force them.
NOTE: Only one probe is required for normal operation.
Press the ON button to turn the unit on.
Press the F/C button to display the temperature in Fahrenheit
(°F will appear on the display) or Celsius (°C will appear on the display).
Press the T1 button to display the temperature of probe 1 (T1 appears on
the display).
Press the T2 button to display the temperature of probe 2 ( T2 appears
on the display).
Place the probe tip in contact with the material to be measured and read the
temperature on the display.
MAX MODE
In the MAX mode, the thermometer will display the highest temperature reading
achieved. It does not display the current temperature if it falls below the
MAX reading.
Example: In the MAX mode
| If the current temperature is… | The display will read… |
|---|---|
| 42°F | 42°F |
| 60°F | 60°F |
| 40°F | 60°F |
Select the desired input (T1, T2 or T1-T2) then press the MAX button (MAX will appear on the display). The thermometer will display the maximum temperature reading on the LCD display. Press the MAX key again to exit MAX recording mode.
HOLD
Press the HOLD key to “freeze” the display at the current T1, T2 or T1-T2 reading (D-H will appear in the display). Press the HOLD key again to return to the current reading.
TEMPERATURE DIFFERENTIAL T1-T2
Press the T1-T2 key to display the difference in temperature between probe 1
and probe 2. This feature takes the temperature being measured at probe 2 and
subtracts it from the temperature being measured at probe 1 and displays the
difference.
NOTE: Two probes must be connected to the unit to use this feature.
PROBES
The probes supplied are ultra-fast response Type-K thermocouple naked bead
probes with 4′ leads and Teflon insulation. The operating temperature range
for these thermocouples is or 500°F (260°C ).
An accessory stainless steel triple purpose probe with a handle is available.
An accessory surface probe is also available (see accessories).
Longer leads and extensions may be used. The lead effect for 164 feet (50
meters) is generally less than 0.2°C with a limit of error of 2.2°C. Type-K
wire and Type-K connectors must be used.
OFFSET ADJUSTMENT (Fine-tuning)
The offset controls are set at the factory to allow for the variations found
in standard thermocouples. By adjusting the offset controls, found below the
thermocouple plugs, you can optimize measurement accuracy for a particular
thermocouple (or pair of thermocouples) at a particular temperature.
ADJUSTING FOR T1 OR T2 MEASUREMENTS
- Plugin the T1/T2 thermocouple and turn the thermometer ON. Press the appropriate T1/T2 key to display reading.
- Place the thermocouple in a known stable temperature environment at or near the temperature you wish to measure. Allow the reading to stabilize.
- Slowly adjust the T1/T2 OFFSET control that corresponds to the selected input until the thermometer reading matches the temperature of the known environment. (Allow sufficient time between adjustments to allow for measurement lag).
- The calibration of the thermometer-thermocouple combination is now optimized (fine-tuned) for measurement near the temperature used in step 2.
ZERO ADJUSTMENT FOR T1-T2 MEASUREMENTS:
- Plugin both the T1 and T2 thermocouples.
- Turn the thermometer on and press the T1-T2 button.
- Place the thermocouples in a known stable temperature environment at or near the temperature you wish to measure and allow the reading to stabilize.
- Slowly adjust either T1 or T2 (but not both) of the OFFSET controls until the thermometer reads “0”. (Allow sufficient time between adjustments to allow for measurement lag).
- The thermometer-thermocouple combination is now set for differential temperature measurement near the temperature used in step 3.
WRIST STRAP AND STAND
The unit is supplied with a wrist strap that attaches through the two slots in
the back of the rubberized casing. Remove the rubberized cover and slip the
end of the strap through the slots, side out, fasten at the buckle. A bench
stand is also supplied with this unit and is part of the rubberized case.
Locate the rectangular opening at the back of the unit. Place your fingernail
under the opening and flip the stand out. To close the stand, simply snap it
shut.
ACCESSORIES
Cat. No. 4014—
Stainless Steel Triple Purpose Probe, probe diameter 1/8″ (0.32cm), probe
length 6″ (15.2cm), overall length 9″ (22.9cm), cable length 50″ (127cm).
Cat. No. 4008—
Surface Probe, flat disk on end has a diameter of 0.39″ (1cm), overall length
9″ (23cm), cable length 36″ (91.4cm).
Cat. No. 4028—
Ultra-fast response, naked bead thermocouple. (identical to probe supplied
with unit) cable length 48″ (122cm).
Cat. No. 8039—
Low-Temperature Probe – Stainless-steel with handle; triple purpose (liquids,
air/gas, and semi-solids), Dimensions: diameter
0.17 inch; stem length 12 inches; overall length 17 inches.
Cat. No. 8613—
High-Temperature Probe – Ten-foot-long 0.19-inch diameter braided metal wire
cable with smooth tip measures -73 to 982°C continuous or 1093°C short-term
use.
DISPLAY MESSAGES:
OL indicates that no probe is present.
indicates that the battery is low and needs replacement (see battery replacement).
ALL OPERATIONAL DIFFICULTIES
If this thermometer does not function properly for any reason, please replace the battery with a new high-quality battery (see “Battery Replacement” section). Low battery power can occasionally cause any number of “apparent” operational difficulties. Replacing the battery with a new fresh battery will solve most difficulties.
BATTERY REPLACEMENT:
A “ “ symbol will appear on the LCD display when the battery needs
replacement. Before replacing the battery turn the unit off and unplug the
probes. Slide the unit out of its rubberized protective casing. Remove the
three screws from the back of the meter and lift them off the front of the
case. Remove the exhausted battery and replace it with a new 9-volt alkaline
battery. Replace the front of the meter, insert the screws and slide the unit
back into its rubberized casing.
WARRANTY, SERVICE, OR RECALIBRATION
For warranty, service, or recalibration, contact:
TRACEABLE® PRODUCTS
12554 Old Galveston Rd. Suite B230
Webster, Texas 77598 USA
Ph. 281 482-1714
• Fax 281 482-9448
E-mail support@traceable.com
• www.traceable.com
Traceable® Products are ISO 9001:2018 Quality-
Certified by DNV and ISO/IEC 17025:2017
accredited as a Calibration Laboratory by A2LA.