Specifications

Multi-Zone Gas Monitors
26 P/N: 3015-5074 Rev 10
Figure 3-3. HGM System Setup Screen #2
3.4.1. Location
This is the name you assign to the MZ monitor to identify its location. It may have up to 12 alphanumeric
characters.
1. Press the ENTER key to adjust the setting.
2. Use the LEFT/RIGHT cursor keys to move across the entry field and the UP/DOWN cursor keys
to modify the individual characters.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
3.4.2. Number of Zones Installed
IMPORTANT: Do not change the number of zones to deactivate unused zones. Changing
the number of installed zones is only necessary when manifold blocks are added or
removed. Go to the individual zone that you wish to disable and set its distance to zero.
1. Press the ENTER key to adjust the number.
2. Use the UP/DOWN cursor keys to modify the number (must be 4, 8, 12, or 16).
3. Press ENTER to accept the new number or ESC to revert to the previous setting.
3.4.3. Alarm Acknowledge Mode
This function programs the relays in the unit for latching or non-latching operation.
1. Press the ENTER key to adjust the setting.
Use the UP/DOWN cursor keys to toggle between settings.
AUTO Non-latching (Alarm relay will automatically de-energize when the gas level drops
below its alarm point.)
MANUAL Latching (Alarm relay remains energized, and will not release until the alarm
condition has been manually acknowledged. Refer to Acknowledging Alarms on
Page 35.)
2. Press ENTER to accept the new entry or ESC to revert to the previous setting.
3.4.4. Audible Alarm
This parameter selects the function of the MZ monitors internal audible alarm device.
1. Press the ENTER key to adjust the setting.
2. Use the UP/DOWN cursor keys to select unused, monitor on, evacuate, spill, leak, fault, or alarm.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
NOTE: In “Monitor On” mode, the unit will only give audible alarms on a critical fault that
stops the unit from monitoring.