Cojali JT2005 Bedieningshandleiding - Pagina 2

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JT2005

Inf rared Thermometer

Operation Manual

Data Storage

In data storage mode (with new data in HOLD state), press SET, data flashes 3 times and is saved in current data

group, then the screen will display the data of next group. If no data has been saved in the group, '- - - -' appears. You

can short press MODE to return to view the previous stored data.

Delete Data

In data storage mode, long press SET for 5s to delete all data (99 groups).

Long press

SET for 5s.

Scheduled Measurement

Enable this function to measure at a preset time (in 24 hours format). The thermometer will turn on automatically to

perform the measurement and save the record at preset time.

General measurement mode: Long press MODE for 3s to enter the scheduled measurement ON/OFF setup interface (as

shown below), use LOG or MODE button to switch between ON/OFF. Thermometer will exit the setup after 5 seconds of

no operation.

Long press

MODE for 3s.

Scheduled Measurement Time Setup

In the scheduled measurement ON/OFF setup interface, short press SET to enter the scheduled measurement time setup

interface (as shown below), press LOG/MODE to set the hour, then short press SET and use LOG/MODE to set the minutes.

Monitoring Measurement

Enable this function to setup the monitoring measurement at a preset interval (1 min-24h). The Thermometer will

automatically turn on to measure and record a measurement at every interval.

In the scheduled measurement time setup interface, short press SET to enter the monitoring measurement setup

interface (as shown below), press LOG or MODE button to switch between ON/OFF. Thermometer will exit the setup

after 5 seconds without any operation.

Monitoring Measurement Time Setup

In the monitoring measurement ON/OFF setup interface, short press SET to enter the monitoring measurement time

setup interface (as shown below), press LOG/MODE to set the hour, then short press SET and press LOG/MODE to set

the minutes.

Protection Function

Without protection function, the thermometer will always be on during locked measurement mode, even when

trigger is enabled by accident. When protection function is enabled, the thermometer will stop the measurement and

shut down when there is no button operation for 10 minutes.

In the monitoring measurement lime setup interface, short press SET to enter the protection mode ON/OFF setup

interface (as shown below), use LOG or MODE button to switch between ON/OFF. Thermometer will exit the setup

after 5 seconds without any operation.

System Time Setup

Please set the system time before the scheduled measurement and monitoring measurement. This thermometer

clock is displayed in 24-hour time format.

In the protection mode ON/OFF setup interface, short press SET to enter the system time setup interface (as shown

below), press LOG/MODE to increase/decrease the relevant value, and short press SET to set the year-month-date-

hour-minute accordingly.

Thermometer will exit the setup after 5 seconds of no operation.

Notes:

The records will be saved from the 000 position when they are stored in memory. After all 99 positions are

occupied, the recording will return to 000 again and overwrite the original data.

When this function is turned on and the thermometer is in the SCAN or HOLD states, "Auto" or "Interval" will be

displayed.

When the thermometer restarts, the system time and the measurement settings will be restored to the default

values (it needs to be reset), but the recording memory will be still saved.

It is not recommended to enable the scheduled measurement and monitoring measurement at the same time, as

their measurement records all start from 000, and will overwrite the measurement data of each other.

Enter the scheduled measurement/monitoring measurement/protection function/system time setting modes

In the HOLD state, press MODE button for more than 3s to enter the scheduled measurement mode; then press SET

to enter the following

setting interface:

In HOLD state, press MODE (>3s)

Scheduled measurement on/off ("Auto" and "LOG" blue characters appear)

Set the hour of scheduled measurement (hour characters flash)

Set the minutes of scheduled measurement (minute characters flash)

Monitoring measurement on/off ("Interval" and "LOG" blue characters appear)

Set the hour of the interval in monitoring measurement (hour characters flash)

Set the minutes of the interval in monitoring measurement (minute characters flash)

Protection function on/off ("Protect" blue characters appear)

Set the year of the system date (year characters flash)

Set the month of the system date (month characters flash)

Set the date of the system date (date characters flash)

Set the hour of the system time (hour characters flash)

Set the minutes of the system time (minute characters flash)

Save and exit the setup mode

Finding Hot Point and Cold Point

Aim at target area with thermometer, then

move up and down slowly to sweep the whole

area until the hot point and cold point are

found.

D:S Ratio (Distance to spot ratio)

S increases as D increases (S represents 90% of energy in the

circle). The maximum D:S can be obtained when D=800mm

(32") and S=40mm (1.6").

Field of View

Ensure that the target is larger than S. The smaller the target

is, the closer the measurement distance should be. Optimum

result is obtained when diameter of the target is more than

2.0 times of S. The spot diameter is approximately equal to the

distance between the two laser points.

Emissivity

Emissivity characterization reflects the radiated energy by the material. Emissivity for most organic materials, paints or

oxidized surfaces are about 0.95. Total emissivity of selected metals and non-metals are listed in the following table.

Measured Surfaces

Metal

Aluminum

Oxidization

A3003 Alloy

Oxidization

Rough

Brass

Burnishing

Oxidization

Copper

Oxidization

Electric Terminal Board

Hastelloy

Alloy

Inconel

Oxidization

Sand-Blasting

Electro Burnishing

Iron

Oxidization

Rusting

Iron (Casting)

Oxidization

Non-Oxidization

Casting

Iron (Forging)

Passivation

Lead

Rough

Press SET

Oxidization

Molybdenum

Oxidization

Nickel

Oxidization

Platinum

Black

Steel

Cold Rolling

Steel Plate Rubbing

Steel Plate Burnishing

Zinc

Oxidization

Non-Metal

Asbestos

Asphalt

Basalt

Ceramic

Clay

Concrete

Cloth

Glass

Convex Glass

Smooth Glass

Lead-Boron Glass

Plates

Plaster

Ice

Limestone

Paper

Plastics

Water

Soil

Wood

Maintenance

Clean

Use clean compressed air to blow away falling particles.

Use a wet cotton swab to carefully wipe lens surface.

Use a wet sponge or a soft cloth to clean product exterior.

Battery Replacement

Install or replace 1604A 9V battery according to the picture on the right.

Emissivity

0.2 - 0.4

0.3

0.1 - 0.3

0.3

0.5

0.4 - 0.8

0.6

0.3 - 0.8

0.7 - 0.95

0.3 - 0.6

0.15

0.5 - 0.9

0.5 - 0.7

0.6 - 0.95

0.2

0.2 - 0.3

0.9

0.4

0.2 - 0.6

0.2 - 0.5

0.9

0.7 - 0.9

0.4 - 0.6

0.1

0.95

0.7

0.95

0.9

0.76 - 0.8

0.92 - 0.94

0.78 - 0.82

0.96

0.8 - 0.95

0.98

0.95

0.93

0.9 - 0.98

0.9 - 0.95