V&A VA8090 User manual

INFRARED TEMPERATURE
THERMOCOUPLE METER
VA8090
Users Manual

Contents
1. Introduction................................................................ 3
1.1 Precautions safety measures ........................ 3
1.1.1 During use .......................................... 3
1.1.2 Maintaining the product ...................... 4
2 Features ..................................................................... 5
3. Range:............................................................................ 5
3 Names Of Parts ......................................................... 7
4 Keys instruction.......................................................... 9
5 Emissivity and Field of View .................................... 11
6 Maintenance ............................................................ 13
6.1 CLEANING INSTRUCTIONS ...................... 13
6.2 BATTERY REPLACEMENT.........................13

1. Introduction
Thank you for purchasing the infrared temperature
thermocouple meter from us. Please take a few minutes
to browse through this user manual before you begin to
operate the meter to ensure that you are fully familiarized
with how best to operate the meter as accurately and
safely as possible.
This meter combines two precision thermometers in one
unit: a noncontact infrared thermometer and a
thermocouple thermometer.
This meter can match standard type K sensor.
WARNING！
Do not point laser directly at eye or
reflective surfaces.
1.1 Precautions safety measures
To get the best service from this meter, please read this
user's manual carefully and observe the detailed safety
precautions strictly.
1.1.1 During use
1. After abrupt ambient temperature changes, allow

instrument temperature to stabilize for 30 minutes
before using for measurement.
2. Do not expose thermometer to excessive ambient
temperatures.
3. Keep the thermometer clean.
4. the center spacing of the standard small thermocouple
jacks is 7.9mm(between the two prongs).
5. When the battery voltage is under proper operation
requirement, the symbol will show on the LCD
and the battery need to be replaced with new.
6. Do not use solvents to clean the meter.
1.1.2 Maintaining the product
Do not measure at a high temperature, high
humidity places.
When not using the instrument for a long time,
please remove the battery and avoid storing in
high temperature and high humidity.

2 Features
1. Display: 4 digits LCD Display
2. Resolution: 0.1 oC /0.1 oF
1oC /1oF(thermocouple above 1000 oC）
3. Range:
infrared: -50~300oC（-58 oF ~572 oF）
thermocouple: -200~1300 oC (-328 oF ~2372 oF )
4. Accuracy:
infrared: -50~-20 oC / ± 5 oC /9 oF
-20~300 oC / ± (1.5% reading +2 oC /4 oF)
thermocouple:-200~-100oC/±(0.2%reading+1oC/2 oF)
-100~1300 oC / ±(0.1% reading +0.7 oC /1.4 oF)
5. Emissivity: 0.95
6．Field of view: 2:1
7. Laser power: Less than 1 mw
8. Response time: 0.5 second
9. Auto power off: 25 seconds (infrared) or 20 minutes
(thermocouple)
10. Low battery indicator
11. Operating environment:
0 ~ 50 oC (32~122 oF)，0 ~ 90%RH
12. Storage environment:

-10 ~ 60 oC (14~140 oF)，0 ~ 80%RH
13. Dimension and Weight:
121(L)x60(W)x30(H)mm, about 180g
14. Accessories: DC1.5V (AAA) x 3pcs
K-type thermocouple wire
String x 1pcs
Plastic box x 1pcs
Users manual x 1pcs

3 Names Of Parts
Instrument Familiarization
1. sensor cover
2. infrared sensor
3. thermocouple jack
4. LCD display
5. function key
LCD Display
LASER
SCAN/H
TYPE
UNIT MODE
ON/OFF
Infrared temperature
thermocouple meter

The meaning of the symbols represented by following:
1. Indicating it is now in the data-holding state
2. Type of thermocouple
3. Indication to measurement
4. Emissivity
5. Display zone
6. Display zone
7. Average/ Maximum / minimize
8. Indication to laser firing
9. Indication to back light
10.Temperature units
11.Indication to low voltage of the batteries
4 . Operation instruction
1. Press the key to turn the power on and press
the key again to shift the measurement mode between
infrared or thermocouple.
TYPE
ON/OFF

2. Press the LASER key under the infrared state. The
meter will enter the measurement state and launch a
beam of red laser. Point the laser to the measured object
and press the SCAN/H key to achieve the continuous
temperature measurement.
3. Press the SCAN/H key under the thermocouple state
and the data will be held. Press the SCAN/H key again
to return the measurement state.
* If you still need more operations, please see the
description of keys instruction.
5 Keys instruction
1.TYPE/ON/OFF key
ON/OFF: Press the key to turn the power ON and press
the key once more >2sec. to turn the power OFF.
TYPE: Press the key to select the mode of infrared or
thermocouple.

2. key
Control the back light on or off.
3.UNIT key
Press the key to select alternate the two temperature
units of oC and oF.
4.MODE key
Press the key to select the mode of AVG, MAX or MIN.
5.LASER key
Control the laser on or off in the infrared state.
6.SCAN/H key
In the infrared state，press the key to measure the
temperature.
In the thermocouple state，Press the key, a icon will
display on the LCD and the readout held in. Press the
key once more to cancel the hold function.
7. Auto power off setting
When the meter is powered on, it is under auto power off
mode. The meter will power itself off after 25 seconds

(infrared) or 20 minutes (thermocouple) if no key
operation.
Cancelled auto power off function: press the LASER key
when power on until the LCD display all icons and the
back light is on.
6 Emissivity and Field of View
Emissivity: Emissivity is a term used to describe the
energy emitting characteristics of a material. The higher
the emissivity value a material has, the more infrared
energy it will emit at a particular temperature. Most
organic materials range in emissivity between 0.85 and
0.98. This thermometer has a fixed (non-adjustable)
emissivity of 0.95. Measuring objects with an emissivity
of less than 0.95 will result in a lower than actual
temperature reading on the display. Be aware of this
characteristic when measuring low emissivity objects
(e.g. shiny, reflective metal objects).
An effective solution is that using the black adhesive

tape to cover the object surface, starting the
measurement until the adhesive tape’s temperature is
same as the object.
Field of View: The distance to spot ratio for this
thermometer is 2:1.
The ideal working range of the noncontact thermometer
is between 25mm and 250mm(1 and 10 inches). The
field of view is a circular measurement area
approximately equal to the distance from the target to
the unit, divided by 2. To ensure accurate measurements,
the measurement target must fill or exceed the field of
view.

7 Maintenance
7.1 CLEANING INSTRUCTIONS
The meter may be wiped down with a wet sponge or
cloth using a mild water based detergent or
anti-bacterial soap and rinsed under a gentle stream
of cold water.
NOTE: This unit is not designed for complete
submersion or washing in water.
7.2 BATTERY REPLACEMENT
Use the following procedure:
When the battery voltage drop below proper operation
range the symbol will appear on the LCD display
and the battery need to be replaced.
Press the battery cover and towards arrowhead
direction to open the battery cover.
Replace the battery with three new 1.5V batteries
(AAA).
Replace the battery cover.

VA8090
-09