Specifications

Multi-Zone Gas Monitors
P/N: 3015-5074 Rev 10 29
2. Use the LEFT/RIGHT cursor keys to move across the entry field and the UP/DOWN cursor keys
to modify the individual alphanumeric characters.
3. Press ENTER to accept the new password or ESC to revert to the previous setting.
NOTE: After entering the password (including the 1
st
time it is set), the MZ begins a 30-
minute “inactivity” timer that is reset every time a key is pressed. When the timer reaches
zero, password access is enabled. To enable password protection sooner, cycle power on
the MultiZone. When password protected, a password entry is required in order to view
screens other than the SYSTEM or ZONE VIEW screen.
3.6. Additional Service Features
The Service Mode option is located on the System Setup Screen in the bottom right corner. When
activated, the Service Mode will disable the MZ unit for a specified length of time. The default is 5 minutes.
This time interval can be changed as described in the Service Timeout section below.
IMPORTANT: Note that while in the Service Mode no measurements are made, nor are
any alarms activated.
Access the service mode options from the initial Data Display Screen. Press the SERVICE MODE ENTRY
option twice within 3 seconds. To exit the Service Mode, again press the SERVICE MODE ENTRY option
twice within 3 seconds.
Several features can be viewed on the System Setup Screen #3 when the monitor is placed in service
mode. While in service mode, the user can identify the model number, set digipot values and sensor
temperature, and acquire the temperature coefficient.
Figure 3-5. System Setup Screen #3 (Service Mode)
3.6.1. Service Timeout
Displayed in Service Mode. Sets the length of time the Service Mode is in effect. Stops the monitor for up to
300 minutes (5 hrs) to allow for servicing the unit.
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 numbers.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
3.6.2. DET Digipot
The DIGIPOT function allows manual and a more precise adjustment of the digital potentiometer, which
controls the voltage of the IR Detector. The DIGIPOT is auto tuned at every power up.
1. Press the ENTER key to adjust the setting. Once the option is selected the screen will also display
the voltage.
2. Use the UP/DOWN cursor key to modify the digipot value.