General Tools DLAF930SD User Manual

DLAF930SD

USER’S MANUAL

ENVIRONMENT METER WITH

DATALOGGING SD CARD

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

TABLE OF CONTENTS

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

Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Operating Instructions . . . . . . . . . . . . . . . . . . . . . 4 – 12

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

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 –8

Normal Operation . . . . . . . . . . . . . . . . . . . . 8 – 10

Holding and Storing Measurements. . . . . . . . . 10

Automatic vs. Manual Datalogging . . . . . 10 – 11

Transferring Data from the SD Card

to a Computer . . . . . . . . . . . . . . . . . . . . . . 11 – 12

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 12 – 13

Maintenance & Troubleshooting Tips . . . . . . . . . . . . 13

Optional Accessories. . . . . . . . . . . . . . . . . . . . . . . . . 14

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . 14

Return for Repair Policy . . . . . . . . . . . . . . . . . . . . . . 14

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INTRODUCTION

Thank you for purchasing General Tools & Instruments’ DLAF930SD Environment
Meter with Datalogging SD Card. Please read this user’s manual carefully and
thoroughly before using the instrument.

The DLAF930SD is a general-purpose handheld instrument that can make five kinds
of measurements:

• Air (wind) speed and temperature (simultaneously)

• Air temperature and humidity (simultaneously)

• Light level

• Surface temperature, as measured by an optional Type K or Type J
thermocouple

• Sound level (using an optional sound level probe and plug adapter)

The meter comes with a multi-function probe that is used to make the first three
types of measurement. Measurements of surface temperature and sound level are
made using optional accessories. Air speeds can be displayed in m/s
(meters/second), fpm (feet per minute), km/h (kilometers/hr), knots (nautical
miles per hour), or mph (miles per hour). Light levels can be displayed in lux
or ft-cd (foot-candles). Temperatures can be displayed in ºF (Fahrenheit) or
ºC (Celsius) units.

Several features and capabilities enhance the meter’s versatility. Among them are
automatic temperature compensation for measurements made by the anemometer
or a Type K or Type J thermocouples, 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 DLAF930SD 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 time-stamping and storing the measurements on an SD card
plugged into the instrument (a process called datalogging), the user can remove the
card and plug it into to 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, which
can be opened by Microsoft’s Excel application.

The DLAF930SD has a backlit 2-1/2 in. diagonal display and is powered by six “AA”
Alkaline batteries or an optional 9-VDC AC adapter.

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KEY FEATURES

• Multi-function probe measures air speed and temperature, air temperature and
humidity, and light level. Optional accessories measure surface temperature and
sound level

• 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 of up to 16 GB capacity

• Auto power off function

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

OPERATING INSTRUCTIONS

WHAT’S IN THE CASE

The DLAF930SD comes fully assembled in a carrying case along with a multi­function (temperature, humidity, air speed, light level) probe, a 2 GB SD memory card
and this user’s manual.

Optional accessories available from General Tools & Instruments include:

• A sound level probe and plug adapter

• Types K and J thermocouples

• A 9VDC adapter for a 110V or 220V power supply

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 DLAF930SD. It also shows (at right) the main components of the
included multi-function probe. Familiarize yourself with the positions and functions of
these controls, indicators and connectors before moving on to the setup procedure.

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1. The DLAF930SD’s controls and indicators and other physical features

Fig. 1

FRONT

TOP

RIGHT

SIDE

BOTTOM

1-1 Liquid-crystal display
1-2 POWER/ESC button
1-3 FUNC./HOLD/NEXT button
1-4 REC/ENTER button
1-5 SET ▼ button
1-6 LOGGER ▲ button
1-7 Socket for multi-function probe or

optional sound level probe

1-8 Socket for Type K or J

thermocouple thermometer
1-9 SD card socket
1-10 RS-232 output jack

BACK

1-11 RESET button
1-12 Socket for 9VDC AC adapter
1-13 Battery compartment cover
1-14 Battery compartment cover

screws
1-15 Kickstand
1-16 Tripod attachment nut
1-17 Multi-function probe head
1-18 Anemometer
1-19 Temperature-humidity sensor
1-20 Light sensor
1-21 Multi-function probe plug

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