Extech 42270 Bedienungsanleitung

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User's Guide

Model 42270 Temperature &HumidityDatalogger

Model 42260 Temperature Datalogger

Introduction

Congratulationson your purchase ofthe ExtechDataloggingModule.The following

models are covered in thismanual.

Model 42270: Temperature andHumidity Datalogging Module

Model 42260: Temperature-only Datalogging Module

The Dataloggers can be used to monitor the temperature of greenhouses,

warehouses, food transports, aircraft cabins, refrigerated trucks, containers,

museums, and HVAC equipment. The Model 42270records Relative Humidity

readingsin addition totemperature readings.Instructionson how toprogramthe

dataloggersare not includedthismanual.Programming anddataretrieval

instructionsare includedin the 42275, 42265, 42276 and 42266 kits.

Description

1.Mounting hole

2.Status LEDs (Record andAlarm)

3.LCD display

Displays

LCD Display

REC:Displayedwhile logging readings.

HI and LOW:Displayedwhen the High or Low Alarm limit is exceeded.

RH%:Relative Humidity (42270 only)

C or F:Temperatureunits.

COMM:Appearswhen Datalogger is communicating with a PC.

Recording Status Indication

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

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

seconds, the indicators will ashevery 1, 2, 3, or 4seconds asprogrammed.

ALARM Status Indication

Both the YELLOW status LED and the display indicator ‘ALM’will ash when the

recorded value ishigher thanthe userprogrammed HighAlarm value or lower than the

Low Alarm value. The Alarm status LED and the ‘ALM’ displayindicator flash every 5

seconds if the sampling rate is programmedfor 5 secondsor higher. If the sampling

rate is set lower than 5 seconds, the indicatorswill ash every 1, 2, 3, or 4 seconds as

programmed.

Low Battery Indication

When the lithium battery voltage nears the critical operating level, the LCD displays

‘LO’. To replace the battery, refer to the Battery Replacement section of thismanual.

Specications

Front panelstatusLEDs Two (2):RECORD andALARM

Temperature range-40 to 85°C (-40 to 185°F)

Temperature resolution0.1° up to 99.9°; 1° from 100°to 185°

Temperatureaccuracy±0.6°C (1.2°F)from -20 to 50°C (-4 to 122°F)

±1.2°C (2.4°F) all other ranges

Humidity range &accuracy0.0 to 99.9% Relative Humidity; Accuracy: ± 3%

Datalogger Memory16,000 temperature readings (8,000 temperature and

8,000 humidity readings on the 42270)

Sampling rateProgrammablefrom 1 to 7200 seconds (2 hours)

Power supplyOne 3.6V ½ ‘AA’ lithium battery

Battery Life1 year: 5 second sample ratein sleep mode

3.8 months: 24 hour sample rate in non-sleep mode

Low battery IndicatorDisplay shows ‘LO’

Dimensions76.2 x 57.2 x22.3mm (3 x 2.3 x 0.88")

The datalogger display will not switch on

until activated by software or the printer

programmer.

THESE DATALOGGERS CANNOTBEUSEDWITHOUTTHE

SOFTWARE FROM KIT 42275 (42265) OR THE PRINTER

PROGRAMMER 42276 (42266).

Battery Replacement

When the low battery icon (‘LO’) appears on the LCD display, replace the Lithium CR2

battery.

1.Open Datalogger housing by rst removing the four (4) rear Phillips screws.

2.Carefullypry off therear of theDatalogger.

3.The cylindrical lithium battery is locatedon the bottomof the PCB board.

4.Replace the battery, observing polarity.

5.Assemble the Datalogger housing.

You, as the end user, are legally bound (Battery ordinance)to return all

used batteries and accumulators; disposal in the household garbage

is prohibited!

You can hand over your used batteries / accumulators at collection

points in your community orwherever batteries / accumulators are sold!

Disposal: Follow the valid legal stipulations in respect of the disposal of

the device at the end of itslifecycle

Copyright2008 Extech Instruments Corporation©

All rightsreserved including the right of reproduction in whole or in part in any form.

42270_42260-EU-ENV2.2 7/09

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