407495 Datasheet, PDF (4/6 Pages) Extech Instruments Corporation. – Heavy Duty Pressure Meter

Operation
Push-button Zero
1. Attach a transducer to the meter, turn the meter ON, and select the range that matches
the attached transducer as described in the 'Preparation for Use' section.
2. With the transducer attached to the meter (but not attached to the process) press the
ZERO button. Note that the ZERO button should always be pressed after swapping
transducers.
3. If the display reads zero after pressing the ZERO button proceed to the next section. If
the display does not zero, the transducer may be defective.
Connect Transducer Port to Process
1. Ensure that the process under test is not pressurized
2. Connect the Transducer's ¼” PS, 19 teeth per inch threaded port to the process under
test.
3. Apply pressure to the process.
4. Read the pressure on the meter's LCD.
Data Hold
1. When a reading is on the display that you wish to hold, press the Data Hold button.
2. The reading will freeze and the HOLD icon will appear on the display.
3. Press the Data Hold button again to release the reading and return the meter to normal
operation.
Minimum/Maximum Reading Memory
1. Press the RECORD/RECALL button to start tracking the highest (MAX) and lowest
(MIN) readings. The REC indicator will appear on the LCD.
2. Take pressure measurements.
3. When pressure measurements are complete, press the RECORD/RECALL button to
recall the Maximum reading recorded (the MAX indicator will appear on the LCD).
4. Press the RECORD/RECALL button again to recall the Minimum reading recorded (the
MIN indicator will appear on the LCD).
5. To exit this mode and return the meter to normal operation, press and hold the
RECORD/RECALL button until the REC indicator goes out.
Auto Power-Off
In order to conserve battery life, the meter automatically shuts off after 10 minutes. To
defeat this feature put the meter in the Record mode by pressing the RECORD/RECALL
button; the REC indicator will appear. As long as the REC icon is displayed, the meter will
stay on indefinitely.
RS-232 PC Interface
This meter is equipped with an RS-232 PC Interface output port (meter top). A Data
Acquisition kit that includes Windows^TM 95 / 98 / ME / NT / 2000 compatible software and a
meter-to-PC interface cable can be obtained from Extech for use with this meter. The Part
Number for the kit is 407001A. Instructions for use are supplied with the kit.
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407495 V2.1 11/2007