V7.1 1/08

2

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:

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

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

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

logger begins to log data, the display and status LEDs will switch on.