Extech Instruments 42580 Manual de usuario

User's Guide

IR Thermometer Printer / Datalogger

Model 42580

42580

Datalogging/Printing IR Thermometer

#5: LOGGING

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Model 42580 Version 2.2 11/03

Introduction

Congratulations on your purchase of the Extech 42580 IR Thermometer Printer-

Datalogger. This device measures temperature using a non-contact IR sensor. The

Datalogger feature stores up to 100 readings in each set (4 sets total) for a total of 400

readings. The Printer provides a hard copy of individual readings or entire data sets. PC

software permits downloading of data for further analysis. Careful use of this meter will

provide years of reliable service.

Specifications

Display Backlit Multi-function LCD

IR Measurement ranges -40 to 932oF (-40 to 500oC)

Accuracy: -4 to 932ºF (-20 to 500oC); ±2% of reading or ±4ºF/2ºC

(whichever is greater)

-40 to -4ºF (-40 to 20oC); ±6ºF/3ºC

Resolution 0.1o for displays <100o, otherwise 1o

Repeatability ±1o

IR distance ratio 8:1

Response time 0.2 seconds

Emissivity Adjustable from 0.3 to 1.0

Datalogger memory 400 readings (0-99 readings in each of 4 sets)

Over range indication "-------" appears on the LCD

Printer 38mm Printer

PC Interface RS-232C (TTL level)

Low battery indication Battery symbol appears on the LCD

Power supply Four (4) 1.5V ‘AA” batteries or optional 6V (1000mA) adapter

Operating current 500mA (printing), 6mA (IR active), 2mA (IR standby)

Auto Power OFF After 10 seconds

Operating Temperature 32 to 122oF (0 to 50oC)

Operating Humidity 90% Relative Humidity max.

Dimensions/Weight 8.2 x 2.8 x 2.1” (208 x 70 x 53mm) / 9.2 oz. (260g) with battery

Model 42580 Version 2.2 11/03

Meter Description

1. Laser pointer beam

2. Non-contact temperature sensor

3. LCD Display

4. Push-button keypad

5. Printer paper and paper compartment

6. RS-232c TTL output jack

7. AC Adapter jack

8. Battery compartment (rear)

Safety

•Use caution when the laser pointer beam is on

•Do not point the beam toward anyone's eye or allow the

beam to strike the eye from a reflective surface

•Do not use the laser near explosive gases or in other

potentially explosive areas

Model 42580 Version 2.2 11/03

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06:25:03 13:55:55

IR Measurement Display

LCD Cont: 1

Prn Cont: 2

Emi. Rate: 0.95

Unit: F

Date: MM:DD:YY

Set Clock:

MM:DD:YY hh:mm:ss

SETUP Screen

Operation

Setup

The Setup Screen provides access to the LCD Contrast, Printer Contrast, Emissivity

setting, Temperature Units and setting of the date and time.

1. Press the button to access the setup screen.

2. Press the or key to move the 1 cursor to the desired position.

3. The programmable parameters are as follows:

•LCD Cont: Adjust the LCD contrast (0-5) using the numeric keypad.

•Prn Cont: Adjust the print contrast (0-9) using the numeric keypad.

•Emi. Rate: Adjust the emissivity (0.0 to 1.0); Set to 0.95 if not sure of emissivity

value for the surface under test.

•Unit: Select temperature units (°C or°F)

using the button.

•Date: Select date format MM:DD:YY,

DD:MM:YY, or YY:MM:DD using the

button.

•Set Clock: Set the current month, day,

year, hour, minute, and second. Use the

arrow keys to move from digit to digit.

Use the numeric buttons to change the

number.

4. Press to exit setup mode.

IR Measurements

1. Point the meter at the surface to be measured.

2. Press and Hold the button to measure

the temperature.

3. The red laser pointer identifies the spot being

measured. Aim the laser pointer at the center

of the surface to be measured. While pressing

the button, press the button to

enable or disable the pointer.

4. Release the button and the last

measured value will remain in the display for

approximately 8 seconds.

Printing IR Measurements

1. Perform the IR Measurement procedure.

2. After the button has been released and before 8 seconds have passed, press

the button.

3. The printer will print the temperature, date and time.

4. Press the button to feed the paper.

Model 42580 Version 2.2 11/03

Field of View

The meter’s field of view is 8:1, meaning that if the meter is 8 inches from the target, the

diameter of the object under test must be at least 1 inch. Other distances are shown below

in the field of view diagram. Refer to the chart printed on the meter for more information.

Measurement Notes

1. The object under test should be larger than the spot (target) size calculated by the field

of view diagram (see diagram on previous page or on side of the meter).

2. If the surface of the object under test is covered with frost, oil, grime, etc., clean before

taking measurements.

3. If an object's surface is highly reflective apply masking tape or flat black paint before

measuring.

4. The meter may not make accurate measurements through transparent surfaces such

as glass.

5. Steam, dust, smoke, etc. will affect measurements.

6. The meter compensates for deviations in ambient temperature. It can, however, take

up to 30 minutes for the meter to adjust to extremely wide ambient temperature

changes.

7. To find a hot spot, aim the meter outside the area of interest then scan across (in an up

and down motion) until the hot spot is located.

Datalogging

Overview

The Model 42580 has two datalogging modes of operation, Manual Datalogging and

Automatic Datalogging. Each has 4 sets. Each set can hold 99 readings. Data sets can be

printed in their entirety.:

•Manual Datalogging: Up to 99 readings can be stored in Sets 1, 2, 3, & 4. Data storage

is performed manually by pressing followed by for each data point

(detailed in subsequent sections).

•Automatic Datalogging: Up to 99 readings can be stored in Sets 5, 6, 7, & 8. In

Automatic Datalogging mode, the user programs the recording start & stop date & time,

and the recording interval. Automatic Datalogging.

1” 2”

Distance to Ob

ect

Diameter of Spot

Laser Beam

4”

8”

16”

32”

0.5”

Sensor Beam

0.63”

Model 42580 Version 2.2 11/03

#1 User Defined Label

01: 07-11 13:55:25

02: 07-11 14:05:03

03:

04:

05:

Manual logging Screen

Manual logging Open Set Screen

01: 07-14 13:55:25

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Manual Data Storage Mode

The Model 42580 can store 99 readings in each of 4 sets numbered #1 through #4. The

function of the buttons in the Manual Datalogging mode are:

Opens the manual data storage mode, Opens a set and clears the data.

Selects the set # for recording or viewing.

Prints the stored records in a set.

Scroll up or down through the records in a set.

Stores the temperature reading.

1 to Z Alpha-numeric label entry (9 buttons).

1. Press the button to enter the manual data

storage mode. A cursor (11111111) will appear

next to the selected set# with the label (if stored).

2. Press the button to scroll through and select

one of the four sets.

3. If data is stored in the set, the label or the date and

time will appear next to the record number.

4. Press again to open the selected set.

5. The Set Screen will open with the cursor on the first

record number that does not contain any data. Data

can now be viewed, printed or new data can be

saved to the set.

6. Press the button a third time to EXIT the

Manual logging mode.

Storing Data

1. Point the meter at the surface to be measured.

2. Press and Hold the button until a reading appears on the display in a box.

3. Release the button and press the button.

4. For each set up to 99 readings can be stored.

Viewing Data

Press the buttons to scroll through and view the stored data.

Printing Data

Press the button and the display will respond with Print?. Press the button

a second time to confirm the print request. The printer will print all the records from record

01 to the last record that contains data.

Erasing Data

Press and HOLD the button for at least three seconds and the recorded data will be

erased. To clear the date and time (or stored labels) Press and HOLD the button

for at least three second while in the Manual logging Mode Main Screen.

Model 42580 Version 2.2 11/03

Begin: 06-25-03

End: 06-25-03

Start: 13:55:00

Suspend: 14:00:00

Rate: 20

Start now? Yes

Datalog Configure Screen

Automatic Datalogging Mode

In the Auto Datalogging mode the Model 42580 can automatically measure and store 99

readings at a programmed sample rate. Four separate sets, numbered 5 through 8, can

hold 99 readings each. The function of the buttons in the LOG mode are:

Opens the automatic data storage mode, opens a set and clears the data

Selects the set # for recording or viewing.

Prints the stored records in a set.

Scroll up or down through the records in a set.

Stores Start time, Stop time and Log rate.

0… Stops a logging session

1 to Z Alpha-numeric label entry (9 buttons).

Selecting the Datalog Set

1. Press the button. A data set Configure

Screen will appear.

2. There are four sets available, numbered 5

through 8 (upper left hand corner).

3. Press the button to scroll through and

select one of the four sets.

Configuring the Datalogger

1. After selecting a set, use the

buttons to move through the fields and use the

alpha-numeric buttons to edit the parameters in

the fields shown in the diagram.

2. The programmable fields are:.

•Begin: Date when recording is to begin.

•End: Date when recording will end.

•Start: Time when recording will begin.

•Suspend: Time when recording will end.

•Rate: Interval of time between each reading (1 to 7200 seconds)

•Start now? Press while YES is highlighted to start recording at the date

and time programmed above.

Note that the datalogger will automatically record from the START time to the

SUSPEND time every day from the BEGIN day to the END day

Model 42580 Version 2.2 11/03

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Mode Measure Screen

Recording Data in the Automatic Datalogging Mode

1. After preparing a data set and configuring the datalogger, place the meter in position to

take readings (tripod mount is provided on rear of instrument).

2. Recording will begin on the date and time

programmed at the BEGIN and START lines in

the ‘Configure Screen’.

3. The Datalogger will record everyday from the

START time to the SUSPEND time. The last

day is the date programmed in the END line.

4. To stop the datalogger before the programmed

SUSPEND time, press the 0 button.

5. To view the data recorded, press the

key twice. The data will be listed as shown in

the ‘Measure Screen’ diagram at right.

6. Use the numeric keys to move quickly through the data list. Pressing the ‘1’ key calls

up data point ‘01’; pressing the ‘2’ key calls up data point ‘21’, and so on.

7. To print data from the list, press the button. Press again when the

PRINT? display appears.

8. To clear (erase) the recorded data, press and hold the button for 2-3 seconds

with the data list shown on the display.

Backlight button

Press to activate the meter’s display backlight.

Editing Names and Labels:

The 42580 has the capability of storing a 14 character label with each set or record.

The label can be entered either through the numeric keypad or the optional software. (See

the software section for instructions on entering labels via the software)

To create a label, with the (11111111) cursor next to the set# or record, press to

switch to a single character cursor (1).

Press any button repeatedly to scroll through the available characters.

If the button is not active for a short period of time the character selected will be written to

the screen.

Press the or buttons to scroll forward or backwards.

For example, to select the letter ‘T’, press the ‘8’ key five times. The meter will move the

cursor to the next digit place automatically. Note that the ‘1’ button has special characters

in addition to the numeral ‘1’. The ‘0’ key has a blank space in addition to the numeral ‘0’.

Press to store the name.

Model 42580 Version 2.2 11/03

Maintenance

Cleaning

Wipe instrument with damp cloth as needed. Do not apply solvents or abrasives to the

meter. Store in a cool dry place with the batteries removed.

Battery Replacement

When the batteries weaken, the LCD display will dim or go completely blank. To replace

the batteries, open the rear battery compartment and insert four (4) new 1.5V ‘AA’ batteries

with correct polarity position.

Paper roll replacement

When the paper roll is depleted, flip up the

paper compartment, drop in a new roll, and

feed the paper using the LF button. New paper

rolls are available through Extech instruments

and Extech distributors.

Emissivity Considerations

The amount of IR energy emitted by an object is proportional to an object's temperature and

its ability to emit energy. This ability is known as emissivity and is based upon the material of

the object and its surface finish. Emissivity values range from 0.1 for a very reflective object

to 1.00 for a flat black finish. The 42580 senses IR energy and calculates the temperature

based upon the amount of IR energy it receives using a factory default emissivity setting of

0.95 (this setting covers 90% of applications).

Most organic materials and painted or oxidized surfaces have an emissivity factor of 0.95.

Inaccurate readings will result from measuring shiny or polished metal surfaces which have

emissivity factors other than 0.95. To compensate for polished/shiny surfaces, cover the

surface with masking tape or flat black paint. Allow time, before measuring, for the tape to

reach the same temperature as the material underneath it.

Emissivity Factors for Common Materials

Material under test Emissivity Material under test Emissivity

Asphalt 0.90 to 0.98 Cloth (black) 0.98

Concrete 0.94 Skin (human) 0.98

Cement 0.96 Lather 0.75 to 0.80

Sand 0.90 Charcoal (powder) 0.96

Soil 0.92 to 0.96 Lacquer 0.80 to 0.95

Water 0.92 to 0.96 Lacquer (matt) 0.97

Ice 0.96 to 0.98 Rubber (black) 0.94

Snow 0.83 Plastic 0.85 to 0.95

Glass 0.90 to 0.95 Timber 0.90

Ceramic 0.90 to 0.94 Paper 0.70 to 0.94

Marble 0.94 Chromium Oxides 0.81

Plaster 0.80 to 0.90 Copper Oxides 0.78

Mortar 0.89 to 0.91 Iron Oxides 0.78 to 0.82

Brick 0.93 to 0.96 Textiles 0.90

Model 42580 Version 2.2 11/03

Software

System Requirements

•Hardware Requirements: 486 PC or better with COM 1 and COM 2 Serial ports

•Operating System Compatibility: WindowsTM 95/98/NT/2000/XP

Hardware Connection

The IR Thermometer connects to a PC with the supplied DB-9 to 3.5mm mini-plug (mono)

interface cable. The DB-9 end connects to the PC serial com port. The mini-plug end

connects to the IR Thermometer.

Software Installation

The instructions on how to install the optional software are printed on the Software CD

label. After reading the label’s directions, load the software CD in the PC CD-ROM drive.

Starting the Software

Run the program by opening the program named “IR Meter”.

This program is located in the programs folder of the Windows Start Menu.

Once the program is running, the Main Software screen will appear.

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