Pressure/Temp Chart(s): Select the desired refrigerant by pressing the REF button,
then use the up/down arrow buttons to scroll to the desired refrigerant and press the
ENTER button to save. Press the CANCEL button to abandon changes. While
viewing pressure/temperature charts, use the up/down arrow buttons to scroll
through the chart.
Hide/Show Elapsed Time: In Normal mode, the elapsed time is shown in the
lower-left corner of the display. The elapsed time may be turned off by selecting this
menu item and pressing the ENTER button. If disabled, the menu item will be shown
as Show Elapsed Time. If enabled, the menu item will be shown as Hide Elapsed
Time.
Disable/Enable Auto Shutoff: When Auto Shutoff is enabled, the MFM300 will
power off in 15 minutes if no buttons have been pressed. To disable Auto Shutoff,
use the up/down arrow buttons to highlight this menu item and press the ENTER
button. Auto Shutoff is the default setting when turning the MFM300 on.
Setup: Press the Menu button, highlight the Set Up option and press the ENTER
button. Set up Items include set altitude, set units of measure, temperature
calibration, and zero out pressure transducers. Use the up/down arrow buttons and
press ENTER to select the highlighted option. To return to the main menu, press
CANCEL at any time.
• Set Altitude: Use the up/down arrow buttons to enter the current altitude
in 500-foot increments.
• Units of Measure: Select either English or Metric units of measure.
• Temperature Cal: Place a temperature probe connected to T1
into an environment with a known temperature and adjust the reading to
calibrate and match.
• Zero out Probe P1, Zero out Probe P2: When a pressure transducer is
attached to U1 or U2, select this option before connecting to the system
if the transducer reading is not 0 PSI after setting the altitude.
Using the MFM300 with a GL Datalogger
Connect the Datalogger Reader to U1 using the GL300 datalogger cable.
Note: the Datalogger cable is not supported on U2. Attach the GL Datalogger tag to
the reader. The MFM300 detects the datalogger and displays the GL100 Datalog
Menu. If the datalogger has been previously programmed for a mission, the mission
description is displayed. Below the mission description are the menu options. Use the
up/down arrow buttons to scroll to the desired menu option and press the ENTER
button.
Check Settings: Select this menu option to view the current mission status.
The status screen displays the following data:
• Mission description or "Name"
• Sampling status: Active or stopped
• Sample interval: Time between samples
• Mission start time and date
• Action when datalogger is full: Stop or rollover
• Record count
Press any key to return to the GL100 Datalog Menu.
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