Data Logging - Extech Instruments SDL730 User Manual

System Reset
If the meter's keys become inoperable or if the display freezes the Reset button can be used to
reset the instrument.
 Use a paper clip or similar item to momentarily press the reset button located on the lower
right side of the instrument under the snap‐off compartment cover.
 After pressing the Reset button, switch the instrument ON by pressing and holding the
POWER key for at least 1.5 seconds. If using the power adaptor unplug the adaptor and then
plug it back in again to power the meter.
Max‐Min Reading Record
For a given measurement session, this meter can record the highest (MAX) and the lowest (MIN)
readings for later recall.
1. Press the MAX‐MIN button momentarily to access this mode of operation (REC icon
appears)
2. The meter is now recording the MAX and MIN readings.
3. Press the MAX‐MIN button again to view the current MAX readings (MAX icon appears).
The readings on the display are now the highest readings encountered since the REC icon
was switched on (when the MAX‐MIN button was first pressed).
4. Press the MAX‐MIN button again to view the current MIN readings (MIN icon appears). The
readings on the display are now the lowest readings encountered since the REC icon was
switched on (when the MAX‐MIN button was first pressed).
5. To exit the MAX‐MIN mode, press and hold the MAX‐MIN button for at least 1.5 seconds.
The meter will beep, the REC‐MAX‐MIN icons will switch off, the MAX‐MIN memory will
clear, and the meter will return to the normal operating mode.
Fittings Connection
Connect tubing to the P1 (+), P2 (‐), or both input port(s). If both inputs are used (differential
mode), the meter displays a positive pressure reading if the P1 (+) pressure is greater than P2 (‐)
and a negative reading if P2 (‐) is greater than P1 (+).
Datalogging
Types of Data Recording
 Manual Datalogging: Manually log up to 99 readings onto an SD card via push‐button press.
 Automatic Datalogging: Automatically log data onto an SD memory card where the number
of data points is virtually limited only by the card size. Readings are logged at a rate specified
by the user.
SD Card Information

Insert an SD card (from 1G size up to 16G) into the SD card slot at the bottom of the meter.
The card must be inserted with the front of the card (label side) facing toward the rear of the
meter.

If the SD card is being used for the first time it is recommended that the card be formatted
and the logger's clock set to allow for accurate date/time stamping during datalogging
sessions. Refer to the Setup Mode section for SD card formatting and time/date setting
instructions.
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