Cojali JT2005 Panduan Pengoperasian

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JT2005

Inf rared Thermometer

Operation Manual

Overview

JT2005 is a professional non-contact infrared thermometer (hereinafter referred as thermometer) can determine surface

temperature measuring the infrared energy radiated by the target surface. JT2005 can measure temperatures from -35

°C to 850°C. This 20:1 ratio meter can store up to 99 sets of data and perform scheduled measurement with a maximum

interval of 96 hours between the two measurements. This thermometer is also IP65 rated and can withstand 3 meters

drop.

Safety Instructions

⚠

Warning

To avoid eyes or personal injury, please read the following safety instructions before using the thermometer:

Please do not aim at people or animals with the laser directly or indirectly.

Please do not look at the laser directly or through other optical tools (telescope, microscope, etc.).

If the battery symbol on the LCD display is flashing, replace the batteries immediately to avoid inaccurate

measurements before using the thermometer.

Inspect the case before using the thermometer. Do not use the thermometer if it is damaged. Look for cracks or

missing plastic.

Please refer to the emissivity information for the actual temperature. Reflective objects can cause the actual

temperature value to be higher than the measured temperature value. When measuring these objects, please be

aware of not to touch very hot surfaces.

Do not use the thermometer in an explosive gas, steam or humid environment.

To ensure measurement accuracy, place the thermometer in the test environment for more than 30 minutes before

using it.

Avoid keeping the thermometer near very hot objects for a long time.

Specifications

Functions

Temperature Range

-35ºC~850ºC(-31ºF~1562ºF)

Accuracy

≥0ºC: ±1.8ºC or ±1.8% of reading, whichever is greater <0ºC: ±(10% of reading + 1.8ºC)

21ºC ~25ºC (70ºF~77ºF)

≥32ºF: ±3.6ºF or ±1.8% of reading, whichever is greater <32ºF: ±(10% of reading + 3.6ºF)

Temperature coefficient

0.1ºC/ºC (0.1ºF/ºF) or ±0.1% of reading per degree, whichever is greater

D:S Ratio

20:1 (calculated when energy is 90%)

Emissivity

0.1~1.0 adjustable

Response Time

250ms (95% of reading)

Spectral Response

8um~14um

Resolution

0.1ºC (0.1ºF)

Repeatability

0.8°C or 0.8% of reading, whichever is greater

Number of lasers

Dual Lasers

Laser type

CLASS II

Laser wavelength

630nm~670nm

Laser power

<1mW

Battery type

9V Battery (1604A)

Battery life

≥16H

Product size

189 x 118 x 55mm

Weight

292g

Operating temperature

0ºC~50ºC (32ºF~140ºF)

Storage temperature

-20ºC~60ºC (-4ºF~140ºF)

Operating humidity

<90% RH (non-condensing)

Operating altitude

2000m

Protection level

According to IEC60529, complies with IP65

Drop test

Safety Standards

GE Certification: EN61326-1: 2013

Laser Safety Standard: EN60825-1: 2014

Reference Standards: JJG 856-2015

Product Features

Strong and Durable: Passed 3m drop test.

Dustproof and Waterproof: Passed IP65 level dustproof and waterproof tests.

Ergonomic Design: Comfortable handheld, simple and convenient operation.

MAX/AVG/DIF/MIN: Can quickly display the maximum, minimum, average and difference value (between maximum and

minimum) during measurement.

Large Backlight Screen: Large screen, bold fonts, and uniform white backlight combined make it an attractive display.

Alarm Function: High and low temperature alarm is displayed with a flashing LED and symbol, in order to easily observe

the exceeded measurement results when alarm is triggered.

Dual-wavelength rotatable Laser indication: Allows you to accurately and quickly determine the area to be measured.

Data Storage: Storages up to 99 groups of data for measurement analysis.

Scheduled Measurement: Sets a time point in which the thermometer will be automatically turned on and performs

measurement once every interval is preset, the maximum interval is 96 hours.

Monitoring Measurement: Sets a time interval, after which the thermometer will be automatically turned on and then

performs measurements.

Function Description

Temperature measurement lock trigger

Laser on

High and low limit alarm

Low battery

Temperature measurement trigger

Measurement data hold

Unit

Measurement value on main display

Measurement value on secondary display

Emissivity

Data storage mode

Scheduled measurement

Monitoring measurement

Auto shutdown protection

Mode

Operations

Power On and Off

Gently pull the trigger to power on thermometer, LCD screen and the backlight will be turned on.

The thermometer will be powered off automatically without operation for 8s.

Power off

without

operation for 8s

Manual Measurement

Pull and hold the trigger after aiming at the target. The SCAN icon will be flashing indicating that the target object

temperature is being measured.

Releasing the trigger, the SCAN icon disappears and the HOLD icon appears, indicating that the measurement has

stopped and the last measured value is kept.

Lock Measurement

During lock measurement, pull the trigger to enable function. The

and the SCAN icon will flash. Thermometer keeps continuously measuring the target temperature.

Pulling the trigger again, the

and SCAN icons will disappear, and the HOLD icon will appear. Thermometer stops

measurement and keeps the last measured value.

Note: During measurement, the target must be larger than the light spot to ensure accuracy. Please refer to the D:S values.

MAX/MIN/AVG/DIF Value Reading

Short press MODE button to change MAX/MIN/AVG/DIF modes respectively, the temperature value of the

corresponding modes are shown in the secondary display area (as shown below).

HIGH Alarm ON/OFF

Short press SET button to switch to HIGH alarm ON/OFF setup (as shown below), press LOG or MODE button to switch

between ON/OFF.

Thermometer will exit the setup after 5 seconds without any operation.

When HIGH alarm is ON, HI symbol and red LED will flash when temperature exceeds the high alarm limit.

HIGH Alarm Limit Setup

Short press SET button to switch to HIGH alarm limit setup (as shown below), use functional buttons to set values.

Short press LOG or MODE button to add or subtract 1 every time. Long press LOG or MODE button to add or subtract

10 every second.

Thermometer will exit the limit setup after 5 seconds without any operation.

LOW Alarm ON/OFF

Short press SET button to switch to LOW alarm ON/OFF setup (as shown below), press LOG or MODE button to switch

between ON/OFF. Thermometer will exit the setup after 5 seconds without any operation.

When LOW alarm is ON, LO symbol and blue LED will flash when temperature is lower than the low alarm limit.

LOW Alarm Limit Setup

Short press SET button to switch to LOW alarm limit setup (as shown below), press the functional buttons to set values.

Short press LOG or MODE button to add or subtract 1 every time. Long press LOG or MODE button to add or subtract

10 every second. Thermometer will exit the limit setup after 5 seconds without any operation.

Emissivity Setup

Emissivity can be adjusted from 0.1 to 1.0. Short press SET button to enter the emissivity setup interface (as shown below).

Press LOG or MODE button to set the values. Short press LOG or MODE button to add or subtract 0.01 every time, long

press LOG or MODE button to add or subtract 0.1 every second. Thermometer will exit the setup after 5 seconds without any

operation.

Unit Setup

Short press SET button to switch to the unit setup interface (as shown in the following figure), press LOG or MODE

button to change °C and °F units. Thermometer will exit the setup if there is no operation for 5 seconds.

icon will appear on the thermometer screen

Laser ON/OFF

Short press SET button to turn the laser on or off setup interface (as shown below), press LOG or MODE button to tum

on or off lasers. Thermometer will exit the setup if there is no operation for 5 seconds.

Lock Measurement ON/OFF

Short press SET button to switch to lock measurement ON/OFF setup interface (as shown below), press LOG or MODE

button to tum on/off the lock measurement. Thermometer will exit the setup if there is no operation for 5 seconds.

Enter/Exit Data Storage Mode

In the HOLD state of normal measurement mode, short press LOG button to enter the data storage mode, then press

LOG/MODE to select the data group to be viewed (up to 99 groups). '- - - -' indicates that no data has been saved in the

group. Long press LOG for 3s to return to normal measurement mode.

Long press

LOG for 3s.