Thank you for purchasing your REED R2340 Professional Infrared
Thermometer. Please read the following instructions carefully before using
your instrument. By following the steps outlined in this manual your meter
will provide years of reliable service.
Product Quality
This product has been manufactured in an ISO9001 facility and has been
calibrated during the manufacturing process to meet stated product
specications. If a certicate of calibration is required, please contact the
nearest authorized REED distributor or authorized Service Center. Please
note an additional fee for this service will apply.
Safety
• Never attempt to repair or modify the
instrument. Dismantling the product,
other than for the purpose of replacing
batteries, may cause damage that will
not be covered under the manufacturer's
warranty. Servicing should only be
provided by an authorized
service center.
• Use extreme caution when the laser beam is turned on.
• Do not let the beam enter someone's eye, another person's eye or the
eye of an animal.
• Be careful not to point the beam off a reective surface and strike
someone's eye.
• Do not allow the laser light beam to impinge on any gas which
can explode.
To turn the meter ON or OFF press and hold the POWER button for
approx. 3 seconds.
External Contact Probe Measuring Procedure
This meter accepts K-type thermocouples with a mini
plug. The probe can be used simultaneously while the
thermometer is taking non-contact measurements.
The probe readings are shown below the
non-contact measurements.
1. Turn the meter on and connect the
provided thermocouple.
2. Pull the trigger to begin taking contact
probe measurements.
3. The LCD will display the measured contact temperature value.
Note: To take a measurement, make direct contact with the surface being
tested. If a thermocouple probe is not connected to the meter, the LCD
will display "---.-°F or °C".
Non-Contact (Infrared) Temperature Measurement
1. Pull and hold the trigger after aiming at the target. The SCAN icon
will ash, indicating that the target temperature is being measured.
2. When the trigger is released, the HOLD icon will appear indicating
that measurement has stopped and the last measured value will
remain on-screen until the next measurement has been taken or the
instrument turns off.
Note: Each time the trigger is pulled an internal log is created which
captures the following information:
The instrument allows for continuous temperature measurement to be set
from 1 minute to 24 hours. Refer to "Trigger Lock Setup" for details.
Note: This function is applicable for processes that require regular
monitoring of temperature.
1. Once the trigger lock function is enabled, pull and hold the trigger
after aiming at the target. The SCAN icon will ash, indicating that
the target temperature is being measured.
2. Press the
screen to turn the continuous temperature measurement
function ON.
3. Release the trigger and the
and the SCAN icon will ash.
4. When the set continuous time for temperature measurement has
been reached, both the
HOLD icon will appear. The thermometer will now hold the last
measured value until the next measurement value has been taken or
the instrument turns off.
Note: The continuous temperature measurement function can also be
turned OFF by pulling the trigger again before time is reached.
button when the icon appears in the lower right of the
icon will now appear on the display
and SCAN icons will disappear and the
Turning Laser ON/OFF
When the trigger is pulled, press the button to turn
the laser indicator function ON and OFF. When turned
on, the laser indicator will be displayed on the LCD,
while the red laser beam will indicate the position
being measured.
1. While the meter is powered ON and in HOLD status, press
the button to enter the measurement MODE selection screen.
2. Press the or buttons to scroll through each mode as shown
in Figure 1.
3. Once the desired mode has been highlighted, press the OK button to
conrm selection.
Note: At any time, press the BACK button or pull the trigger to exit the
measurement MODE selection screen and resume normal operation.
General Mode
This mode is suitable for most users and can measure ambient
temperature, relative humidity, dew point temperature, wet bulb
temperature, type K thermocouple (contact) temperature and infrared
(non-contact) temperature. (Figure 2)
Infrared Reference Mode
In this mode, a measured reading can be compared to a reference
temperature. If the reference temperature needs to be changed, press
the BACK button to clear it and measure again. When ready, measure
the temperature of the detected object. The thermometer automatically
calculates the difference (IR-Ref) by subtracting the temperature of the
object being measured (IR) from the reference temperature as shown
in Figure 3.
In this mode, the thermometer automatically calculates the difference
between the temperature of the object being measured and the current
ambient temperature as shown in Figure 4.
Dew Point Mode
In this mode, the thermometer automatically calculates the difference by
subtracting the temperature of the object being measured from the current
dew point temperature as shown in Figure 5.
Thermocouple Mode
In this mode, the thermometer automatically calculates the difference by
subtracting the temperature of the object being measured from the type K
thermocouple temperature as shown in Figure 6.
2. Release the trigger to stop the measurement and
return to HOLD measurement status.
3. Press the button to save the current
measurement log.
4. Press the or button to select the sequence
number to be saved.
5. Press the OK button to conrm selection.
Transfer files to a PC
To transfer recorded information to a PC, connect the included USB cable
to the instrument and a computer.
1. Plug the USB cable into the USB-C interface and turn the
instrument on.
2. Press the OK button to enter the MENU screen.
3. Press the
4. Press the OK button to conrm selection.
5. After the table is generated, the computer will automatically
recognize the meter as a removable device and open the drive to
view the generated logs in PDF/CSV formats.
Note: No software is necessary to view saved data. Simply click and drag
data from the device on to a computer's desktop or open directly from
any of the folders.
Emissivity is a term used to describe the energy-emitting characteristics of
materials. Most (90% of typical applications) organic materials and painted
or oxidized surfaces have an emissivity of 0.95. Inaccurate readings will
result from measuring shiny or polished metal surfaces. To compensate,
cover the surface to be measured with masking tape or at black paint.
Allow time for the tape to reach the same temperature as the material
underneath it. Measure the temperature of the tape or painted surface.
To keep your instrument in good working order we recommend the following:
• Store your product in a clean, dry place.
• Change the battery as needed.
• If your instrument isn't being used for a period of one month or longer
please remove the battery.
• Clean your product and accessories with biodegradable cleaner. Do not
spray the cleaner directly on the instrument. Use on external parts only.
Product Warranty
REED Instruments guarantees this instrument to be free of defects
in material or workmanship for a period of one (1) year from date of
shipment. During the warranty period, REED Instruments will repair or
replace, at no charge, products or parts of a product that proves to be
defective because of improper material or workmanship, under normal
use and maintenance. REED Instruments total liability is limited to repair
or replacement of the product. REED Instruments shall not be liable for
damages to goods, property, or persons due to improper use or through
attempts to utilize the instrument under conditions which exceed the
designed capabilities. In order to begin the warranty service process,
please contact us by phone at 1-877-849-2127 or by email at
[email protected] to discuss the claim and determine the
appropriate steps to process the warranty.
Product Disposal and Recycling
Please follow local laws and regulations when disposing or recycling your
instrument. Your product contains electronic components and must be
disposed of separately from standard waste products.
If you have any questions on your product, please contact your authorized
REED distributor or REED Instruments Customer Service by phone at
1-877-849-2127 or by email at [email protected].
Please visit www.REEDInstruments.com for the most
up-to-date manuals, datasheets, product guides and software.
Product specifications subject to change without notice.
All rights reserved. Any unauthorized copying or reproduction of this
manual is strictly prohibited without prior written permission from
REED Instruments.