Extech Instruments 42265 Manual de usuario

SW276

User Guide

Model 42265 Temperature Datalogger Kit

Model 42275 Temperature and Humidity Datalogger Kit

Model SW276 Datalogging Software

V7.1 1/08

Introduction

Congratulations on your purchase of Extech Instrument’s Datalogging instrumentation and

software. This User Guide serves three purposes, refer to the list below:

1. This User Guide covers the following products entirely with regard to hardware and

software operation:

Model 42275: Temperature and Humidity Datalogging Module with docking station and SW276 WindowsTM

Software

Model 42265: Temperature Datalogging Module with docking station & SW276 WindowsTM Software

Model SW276: WindowsTM Datalogging Software

2. This User Guide covers the following products with regard to software and some

hardware operation. A separate manual is supplied with your instrument that covers all

of the hardware operation.

Model 42276: Temperature & Humidity Datalogging Module plus printing/docking station & Optional

SW276 WindowsTM Software

Model 42266: Temperature-only Datalogging Module plus printing/docking station & Optional SW276

WindowsTM Software

Model 42270: Temperature and Humidity Datalogging Module

Model 42260: Temperature-only Datalogging Module

3. This User Guide covers the following products with regard to software only; all other

information regarding hardware is covered in a separate, dedicated manual supplied

with the instrument.

Model 42280: Temperature and Humidity Datalogger (Software instructions only)

Applications

The Datalogging modules models 42270 and 42260 can be used to monitor the

temperature of greenhouses, warehouses, food transports, aircraft cabins, refrigerated

trucks, containers, museums, and HVAC equipment. The Model 42270 records Relative

Humidity readings in addition to temperature readings. Modules can store 16,000 (8000

temperature and 8000 %RH for 42270) readings that can later be transferred to PC or

directly printed using the Model 42276 Programmer/Printer.

Important note on the Model 42280 Temperature/Humidity Datalogger

Note that the Model 42280 has its own User Guide. Please refer to

the separate User Guide supplied with the Model 42280 for details

on the meter’s operation. This manual covers only the Datalogging

software with regard to the 42280. Install the supplied Software as

described on the program CD’s label and then skip to page 5 of this

manual for software instructions. Model 42280

The datalogger module display will not switch

on until activated through the software

The datalogger module display will not switch on until it is activated by the

software in the LOGGER SET menu as described later in this manual. In

LOGGER SET the user selects the type of recording activation. When the

er be

ins to lo

data

the dis

and status LEDs will switch on.

V7.1 1/08

REC HI LOW COMM

RH%

°C

°F

Description

1. LCD display

2. Mounting hole

3. Docking station

4. Interface Cable

5. Status LEDs

6. Software CD

Displays

LCD Display

REC: Displayed while logging readings. Read the ‘Recording

Status’ section for further details.

HI and LOW: Displayed when the High or Low Alarm limit is

exceeded. See ‘Alarm Status’ below for further information.

RH%: Relative Humidity (42270 and 42275 only)

C or F: Temperature units.

COMM: Appears when Datalogger is communicating with a PC.

Recording Status Indication

Both the RED status LED and the display indicator ‘REC’ will flash every 5 seconds if the

sampling rate is set to 5 seconds or higher. If the sampling rate is set lower than 5

seconds, the indicators will flash every 1, 2, 3, or 4 seconds as programmed.

ALARM Status Indication

Both the YELLOW status LED and the display indicator ‘ALM’ will flash when the recorded

value is higher than the user programmed High Alarm value or lower than the Low Alarm

value. The Alarm status LED and the ‘ALM’ display indicator flash every 5 seconds if the

sampling rate is programmed for 5 seconds or higher. If the sampling rate is set lower than

5 seconds, the indicators will flash every 1, 2, 3, or 4 seconds as programmed.

Low Battery Indication

When the lithium battery’s voltage nears the critical operating level the LCD displays ‘LO’.

To replace the battery, refer to the Battery Replacement section of this manual.

V7.1 1/08

5, 6

Software Installation

Installation instructions for models 42266 and 42276

Note: The software program and USB driver must both be

installed in order for the printer/meter to communicate with

the software. Please follow the installation instructions below.

1. Place the supplied software CD in the PC CD-ROM. The Data Acquisition Setup

Menu will appear (see below).

2. Click on “Install Software” to start the installation of the software.

3. Click “Finish” to install the program to the default location or click on “Change” to

enter the directory in which to install the program.

4. Follow the on-screen instructions to complete the program installation.

5. Click “Install USB” and follow the on screen instructions to complete the USB driver

installation.

LNK PC Link Screen

The printer must be set to PC communication on the Link

screen before communication can occur.

1. Turn the printer on

2. Press the Menu button until the LNK screen

appears.

3. Press the Up or Down button to select the logger or

the printer memory.

4. Press Enter when the selection is complete

Installation Instructions for models 42265 and 42275

Place the supplied software CD in the PC CD-ROM drive.

1. Click on “Install Software” to start the installation of the software.

2. Click “Finish” to install the program to the default location or click

on “Change” to enter the directory in which to install the program.

3. Follow the on-screen instructions to complete the program

installation.

Setup menu description

1. Install USB driver

2. Exit: Close the Setup Menu

3. Software Version number

4. Software installation

5. Open the English manual

6. Open the Spanish manual

7. Visit the Extech website

8. View all items on the CD-ROM

V7.1 1/08

Software Operation

Main Screen

Diagram A: Main Screen

Cursor 1 and 2 Control

Click on a cursor line to select it. When the red cursor line is clicked, it turns bold red.

When you click the green cursor, it turns bold green (colors may vary). The CURSOR

STATUS field (lower left) shows the cursor positions. As the Arrow keys are used to select

the last record or the next record, the cursor location numbers change to reflect their new

position.

Left arrow key: Moves to previous point on the current plot.

Right arrow key: Moves to next point on the current plot.

<Shift>-left arrow key: Moves back 10 points on the current plot.

<Shift>-right arrow key: Moves forward 10 points on the current plot.

<Home>: Moves to first visible point on the current plot.

<End>: Moves to last visible point on the current plot.

The user can also click and drag the cursor with the mouse. The cursor tracks the mouse

until the mouse button is released. When the mouse button is released, the cursor snaps

to the nearest data point.

Offset Knob

Use the Offset control in the DISPLAY CONTROL field (lower right) to optimize the data

viewing area. Press the up or down arrow key to increment or decrement the record

number (with corresponding date) in the graph.

V7.1 1/08

Zoom and Pan on Graphs

To zoom in, press the <Ctrl> key and click the left mouse button over the desired point;

release the <Ctrl> key after the mouse button is pressed. The view resolution increases

until the mouse button is released. To zoom out, click the right mouse button.

To pan, press the <Ctrl-Shift> keys and click the left mouse button over the desired point,

and then drag the mouse to another point. The graph view scrolls so that the original point

now appears under the new mouse cursor location. Drag the mouse anywhere on the

screen.

To restore the view to its original state (after zooming or panning), press and hold the left

mouse button and drag the line on the Offset or Range knob (located in the DISPLAY

CONTROLS section).

Horizontal Axis select switch

Use the mouse to control the switch and select Record number or Time (HH:MM:SS) label

for the horizontal axis of the graph.

Warning message

A warning message will appear on the lower left if the Datalogger is disconnected from the

PC.

<< WARNING: Data Logger not plugged into interface module! >>

Display Control

After downloading or retrieving a record, the numbers on the "Offset" and "Range" knobs

will change to:

Offset: 0000/5000/10000/15000

Range: 50/250/500/1K/2K/4K/8K/12K/16K

Save File

To save a transferred data file

Click on SAVE FILE, select a folder, and name the data file.

V7.1 1/08

Retrieve File

Click on RETRIEVE FILE to retrieve a previously saved file.

To aid in reading a graph, a grid can be drawn on the graph. A dialogue box at the bottom

left hand corner shows the grid (CONTROL LOCATION Cursor 1 and 2)

After retrieving a file containing Humidity records, the labels "Temperature" and "Humidity"

will appear at the beginning of the curves. If no Humidity data is transferred, only the

Temperature curve will appear.

The date and time of the first point appears on the left hand corner. The last point’s date

and time appears on the right hand corner.

MAIN SCREEN WITH SAMPLE DATA

V7.1 1/08

Com Port Setup

Select "Com. Set". Select the COM port, Baud rate (9600), Data bits (8), Parity (None) and

Stop bits (1).

Select OK to accept settings, press Cancel to abort and exit.

V7.1 1/08

Datalogger Settings

Press LOGGER to access the menu page

Sample Rate Setup

Number of Data Points

Select the desired number of data samples to log: 1000 / 2000 / 4000/ 8000 / 12000 /

16000. Scroll up or down to located the value and then click OK to save.

For example, to select 1,000 samples, the logger will stop logging (and will power off) when

1000 data points have been collected. Datalogging ceases when the datalogger is full. The

yellow LED will stop flashing when datalogging ceases.

Sample Rate

Select the sampling rate in seconds (1 second to 12 hours). Scroll up to increase the time

or down to decrease the time in seconds. The defaults sample rate is 2 seconds.

Start Modes

Scheduled Start

Scheduled Start sets the desired datalogging Start Date and Start Time. The datalogger

will start when the clock reaches the user programmed time and date. Ensure that the

datalogger is set to the current date and time.

Magnetic Start

Connect the datalogger to the PC to begin configuring the Magnetic start mode. Select

Magnetic and ensure that the datalogger is set to the current date and time. Enter the

desired ID (if any) and then press "OK" to confirm the Magnetic start setting. To start

datalogging in Magnetic mode, pass a strongly magnetized object by the bottom of the

datalogger. The LED will start flashing. Flashing rate depends on the sampling rate

programmed.

Immediate Start

The datalogger starts recording when the “OK” button is pressed.

V7.1 1/08

Start Mode Setup

Datalogger Clock Setting

Click OK to set logger to PC system time.

Alarm Setting

The default High Alarm temperature is 85 C

The default Low Alarm temperature is -40 C

The default High Alarm for Relative Humidity is 100%

The default Low Alarm Relative Humidity is 0%

Select the desired High value or Low value by scrolling up or down.

The ALM LED flashes:

a. If the measured Temperature is higher than the HI

Alarm setting or lower than the LO Alarm setting.

b. Every second while the data is transferring to the PC.

c. Once every datalogging interval. For example, if the

sampling rate is set to 3 seconds, the ALM LED will flash

every 3 seconds.

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