Dwyer Instruments MIT Operating Manual

Bulletin T-11

Series MIT Miniature Infrared Non-Contact Thermometer

6:1 D:S Ratio with Laser Sighting

The Series MIT Miniature Infrared Temperature Thermometer is

the ultimate portable infrared solution. This unit has features such as
MIN and MAX Temperature, Adjustable Emissivity, Battery Life
Indicator, and Laser Sighting. This affordable thermometer also has a
6 to 1 distance to spot ratio in a key chain size housing.

4-3/32

(103.99)

(50.8)

2

13/16

(20.64)

SPECIFICATIONS
Measurement Range: -67 to 482°F (-55 to 250°C).
Accuracy: 2% of reading or 4°F (2°C) whichever is greater.
Emissivity Range: 0.95 default - adjustable 0.05 to 1.00 Emissivity.
Distance Spot: 6:1 optics ratio.
Resolution: 0.1°F/0.1°C (switchable).
Response Time: 1 second.
Operating Range: 32 to 122°F (0 to 50°C).
Battery Life: Typical 40 hours of continuous use (auto power off

after 15 sec.). (2) CR2032 batteries included.

Weight: 2.29 oz (65 g) including batteries.
Dimensions: .89 x 1.97 x 4.06 in (175.2 x 39.0 x 71.9 mm).

OPERATING INSTRUCTIONS
Laser Information

By partially pressing the “SCAN” key the device will begin to measure
the temperature of the target. When the “SCAN” key is completely
depressed the laser will operate while taking measurement.

Changing Units

To change the thermometer’s units, first turn the instrument on by
pressing the “SCAN” key then press the “MODE” key four times until
the ºC or ºF symbol flashes. Press the “SCAN” key to change the units.

EMISSIVITY RANGE

The infrared thermometer is supplied with a default emissivity of 0.95.
The emissivity of the thermometer can be changed from 0.05 (5E) to

1.00 (100E). Changes should only be carried out by experienced per­sonnel. To change the emissivity first turn the instrument on by press­ing the “SCAN” key, and then press the “MODE” key five times for
emissivity value until the emissivity value flashes on the display. Press
the “SCAN” key to adjust the emissivity value, and press the mode key
to accept the change. For information relating to the emissivity of spe­cific materials, please contact the nearest retailer.

NOTE: Non-contact infrared thermometers are not recommended for
use in measuring the temperature of shiny or polished materials.

Minimum or Maximum Mode

T o utilize the thermometer’s minimum or maximum mode, first turn the
instrument on by pressing the “SCAN” key, then press the “MODE”
key once for minimum or twice for maximum function. The “MIN” or
“MAX” icon will flash, then press the “SCAN” key to confirm the min­imum or maximum mode. The thermometer will display the minimum
or maximum reading only.

Lock Mode

The lock mode is particularly useful for continuous monitoring for tem­peratures.

To utilize the thermometer’s lock mode first turn the instrument on by
pressing the “SCAN” key then press the “MODE” key three times for
the lock mode function. The lock icon will flash then press the
“SCAN” key to confirm the lock mode. The thermometer will contin­uously display the temperature for up to 60 minutes or until the
“SCAN” key is pressed again.

DWYER INSTRUMENTS, INC.

Phone: [phone] www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: [phone] e-mail: [e-mail]

page 2

LCD Error Messages

The thermometer incorporates visual diagnostic messages as follows.

“HI/LOW”: “Hi” or “Lo” is displayed when the temperature is outside
the measurement range of the instrument. “Hi” would appear above
250˚C (482˚F) and “Lo” would appear under-65˚C (-67˚F).
“Er2”: Displays when the thermometer is exposed to rapid changes
in the ambient temperature.
“Er3”: Displays when the ambient temperature exceeds 32°F (0°C) or
122°F (50°C). The thermometer should be allowed plenty of time (min­imum 30 minutes) to stabilize to the working/room temperature.
“Er”: For all other error messages it is necessary to reset the ther­mometer. To reset it, turn the instrument off, remove the battery and
wait for a minimum of one minute, reinsert the battery and turn it on.
If the error message remains please contact the Dwyer Customer
Service department for further assistance.

Batteries:

The thermometer incorporates visual low battery indication as follows.

Battery OK: Measurements are possible.

Battery Low: Battery needs to be replaced, measurements are still

possible.

EMC/RFI

Readings may be affected if the unit is operated within radio frequen­cy electromagnetic field strength of approximately 3 volts per meter,
but the performance of the instrument will not be permanently affect­ed.

CAUTION

1. When device is in use, do not look directly into the laser
beam - Permanent eye damage may result.

2. Use extreme caution when operating the laser.

3. Never point the device towards anyone’s eyes.

4. Keep out of reach of all children.

MAINTENANCE

A periodic check of the system calibration is recommended. The
Series MIT is not field serviceable and should be returned if repair is
needed (field repair should not be attempted and may void warranty).
Be sure to include a brief description of the problem plus any relevant
application notes. Contact customer service to receive a return goods
authorization number before shipping.

Storage and Cleaning

The sensor lens is the most delicate part of the thermometer . The lens
should be kept clean at all times, care should be taken when cleaning
the lens using only a soft cloth or cotton swab with water or medical
alcohol. Allowing the lens to fully dry before using the thermometer.
Do not submerge any part of the thermometer. The thermometer
should be stored at room temperature between -4°F and 149ºF (-20ºC
to 65ºC).

Battery Exhausted: measurements are not possible. When the low
battery icon indicates the battery is low, the batteries should be
replaced immediately with CR2032 batteries.

Please Note: It is important to turn the thermometer off before replac­ing the battery otherwise the thermometer may malfunction. Dispose
of used batteries promptly and keep away from children.

©Copyright 2007 Dwyer Instruments, Inc. Printed in U.S.A. 6/07 FR# R5-443383-00

DWYER INSTRUMENTS, INC.

Phone: [phone] www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: [phone] e-mail: [e-mail]