General Tools General Tools DTH3007SD Manual

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DTH3007SD

USER’S MANUAL

THERMOMETER-HUMIDITY METER

WITH DATALOGGING SD CARD

Please read this manual carefully and thoroughly before using this product.

TABLE OF CONTENTS

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . 4 –9

What’s in the case . . . . . . . . . . . . . . . . . . . . 4 –5

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 –7

Normal Operation . . . . . . . . . . . . . . . . . . . . . 7 –8

Holding and Storing Measurements. . . . . . . . . . 8

Automatic vs. Manual Datalogging . . . . . . . 8 –9

Transferring Data from the SD Card

to a Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Maintenance & Troubleshooting Tips . . . . . . . . 10 – 11

Optional Accessories. . . . . . . . . . . . . . . . . . . . . . . . . 11

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . 11

Return for Repair Policy . . . . . . . . . . . . . . . . . . . . . . 11

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INTRODUCTION

Thank you for purchasing General Tools & Instruments’ DTH3007SD Thermometer-Humidity
Meter with Datalogging SD Card. Please read this user’s manual carefully and thoroughly
before using the instrument.

The DTH3007SD is a general purpose handheld instrument that can make four kinds of
measurements:

• The temperature and humidity of a fluid (simultaneously)

• The dew point of ambient air

• The wet-bulb temperature of ambient air

• The temperature of a surface

The instrument comes with a temperature-humidity probe that is used to make the first
three types of measurement. Surface temperature measurements are made using an
optional Type K or Type J thermocouple.

Several features and capabilities enhance the DTH3007SD’s versatility. Among them are
automatic temperature compensation for dew point, wet-bulb and thermocouple
measurements; the ability to hold readings and display maximum and minimum readings;
and an automatic power off function that extends battery life.

Because it is microprocessor-based, the DTH3007SD can make full use of the portability,
reliability and large storage capacities that SD memory cards offer. Measurements can be
made automatically at any sampling rate between one second and one hour. After the
instrument time-stamps and stores the measurements on an SD card plugged into it (a
process called datalogging), the user can remove the card and plug it into a laptop or
desktop computer either directly or via a USB card reader. The data logs are stored on the
card as files with the .xls extension that can be opened by Microsoft’s Excel application.

The DTH3007SD has a backlit 2-1/2 in. diagonal display and is powered by six “AA”
Alkaline batteries or an optional 9-VDC AC adapter.

KEY FEATURES

• Four-function instrument measures temperature/humidity, dew point,
wet-bulb temperature and surface temperature

• Big (2.5 in. diagonal) front-panel green backlit LCD is easy to read

• Displays maximum and minimum readings and holds any reading

• Automatically logs measurements at sampling time settable from one second to
one hour

• Also supports manual datalogging and changing of SD card storage location

• Outputs Excel-compatible data logs

• Accepts SD memory cards as large as 16 GB

• Auto power off function

• Powered by six “AA” batteries or optional 9V AC/DC adapter

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OPERATING INSTRUCTIONS

WHAT’S IN THE CASE

The DTH3007SD comes fully assembled in a carrying case along with a temperature­humidity probe, a 2 GB SD memory card and this user’s manual.

Optional accessories available from General Tools & Instruments include:

• Type K and Type J thermocouples

• A 9VDC adapter for a 110VAC power supply

• A carrying case

See the Optional Accessories section of this manual for more details.
Figure 1 shows all of the controls and indicators on the front, right side, back, top and

bottom of the DTH3007SD. It also shows the main components of the included
temperature-humidity probe. Familiarize yourself with the positions and functions of these
controls, indicators and connectors before moving on to the setup procedure.

TOP

FRONT

BOTTOM

RIGHT

SIDE

BACK

TEMPERATURE-

HUMIDITY PROBE

Fig. 1. The DTH3007SD’s controls and indicators and other physical features

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