User Manual

HD755 V1.1 08/08
5
MIN-MAX-AVG Record Mode with Elapsed Timer
The RECORD function tracks the maximum (MAX), minimum (MIN), and average (AVG)
readings with a time stamp. The elapsed timer is displayed on the lower right-hand corner
of the LCD and informs the user of the time a MAX or MIN reading was recorded.
1. Press the RECORD button once. The REC indicator will appear on the display and
the displayed elapsed timer will start (HH:MM:SS format [hours:minutes:seconds]).
2. Press the RECORD button again to view the highest (MAX) reading recorded since
the RECORD button was first pressed. The MAX indicator and maximum reading will
appear on the display. The elapsed timer will show the time of the MAX event.
3. Press the RECORD button again, the MIN indicator and the minimum value will
appear on the display. The elapsed timer will show the time of the MIN event.
4. Press the RECORD button again, the AVG indicator and the average value will
appear on the display. The elapsed timer will continue to run.
5. To return to normal operation, press and hold
the RECORD button until the display
indicators REC, MAX, etc. switch off.
Note that in the RECORD mode, the backlight and the power buttons are the only
available functions.
USB PC Interface
The meter has a built-in USB port for use with the Manometer Data Acquisition software.
The software allows the user to view, save, export, and print readings from the HD755.
Refer to the documentation included with the software for complete details.
Displayed Error Codes
The following codes are displayed when the meter encounters an error.
ERR 1: Pressure input exceeds specified limits
ERR 2: Pressure input is too low to read
ERR 3: The Differential Pressure input exceeds specified limits
ERR 4: The Differential Pressure input is too low to read