Extech SDL700 Operating Manual

User's Guide

Pressure Meter

SD Card real-time datalogger

Model SDL700

Introduction

Congratulations on your purchase of the Extech SDL700 Pressure Meter, an SD Logger Series
meter. This meter displays and stores pressure readings from optional pressure sensors in the
range of 30, 150, 300 psi. Supported measurement units are bar, psi, Kg/cm
meters of H
SD card for transfer to a PC. In addition, an RS232 port allows data streaming to a PC. This meter
is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.

O, inches of H2O, atmosphere, hPA, and kPA. Logged data readings are stored on an

2

2

, mm Hg, inch Hg,

Safety

International Safety Symbols

This symbol, adjacent to another symbol or terminal, indicates the user must refer to the
manual for further information.

Meter Description

1. Pressure Sensor input jack

2. Measurement reading on LCD Display

3. HOLD and Backlight

4. MAX-MIN key

5. SET and Clock

6. PC interface jack

7. Reset button

8. Power Adaptor jack

9. SD card slot

10. ENTER and LOG key

11. Down arrow ▼ key

12. Up arrow ▲ / UNIT key

13. Power ON-OFF

14. Unit of measure on the LCD Display

Notes: Items 6, 7, and 8 are located behind the snap-off compartment cover on meter’s right side.

Battery compartment, tilt stand, and tripod mount are located on the rear of the instrument

key

key

key

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Getting Started

Power ON-OFF

• Power the meter by pressing and holding the power button

• Press and hold the power button for at least 1.5 seconds to power OFF the meter.

• This meter is powered by six (6) 1.5VDC ‘AA’ batteries or by optional AC adaptor. If the meter

will not switch ON please check that fresh batteries are installed in the rear battery compartment
or, in the case of the AC adaptor, check that the adaptor is connected correctly to the meter and
to an AC source.

Display Backlight

To turn the display backlight ON or OFF, press and hold the backlight
seconds. The meter will beep when switching the backlight ON or OFF unless the beeper is
disabled.

Pressure Sensors

Pressure sensors are connected to the meter via the DIN jack at the top of the meter. Pressure
sensors of 2Bar (30psi), 10Bar (150psi) and 20Bar are available for use with the SDL700.

Note that re-calibration is not necessary when changing sensors; however the user must select the
appropriate sensor range in the Setup Mode. To view the currently selected sensor range from the
normal operation mode, press and hold the down arrow button ▼ for at least 1.5 seconds.

for at least 1.5 seconds.

button for at least 1.5

Units of Measure

The currently selected unit of measure is shown below the measurement value on the meter’s LCD.
To change the unit of measure, press and hold the UNIT button until the desired unit of measure
appears and then release the UNIT button. The meter begins scrolling through the available units of
measure (see table below) after the UNIT button has been depressed for at least 1.5 seconds.

UNIT DISPLAY INDICATOR

psi PSI

Inch Hg In Hg

Inch H2O In H2O

hPA hPA

kPA _PA

Bar bAr

Kg/cm2 _g C2

mm Hg --Hg

Meters H2O -t H2O

Atmospheres AtP

ZERO Adjustment

To null, or zero, the display for a connected sensor, press and hold the down arrow key▼ for at
least 12 seconds.

Data Hold

To freeze a displayed reading on the LCD, momentarily press the HOLD button (the HOLD icon will
appear above the reading). To exit HOLD, press the HOLD button again.

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