Specifications

Multi-Zone Gas Monitors
30 P/N: 3015-5074 Rev 10
3.6.3. Node Address
Each monitor on the network must has a distinct node address. The node address may be set from 1 to 64.
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.
3.6.4. Sensor Temperature Coefficient (For Factory Use Only)
This field is typically for factory use only. A customer may need to enter a temperature coefficient if the IR
bench is replaced and a new temperature coefficient is supplied with the replacement bench. Note,
however, changing this setting will void the calibration.
3.6.5. Password
This field is used to define a system password. The default setting is 000 (no password protection).
1. Press the ENTER key to adjust the password.
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.
3.6.6. Acquiring Temperature Coefficient (For Factory Use Only)
This field is for factory use only. Changing this setting will void the calibration.
3.6.7. IR Digipot
This option indicates the electrical parameters of the infrared emitter.
3.7. Establishing the CO
2
Sensor Baseline
At power up, an automatic zeroing sequence establishes the CO
2
sensor baseline. At that time, the MZ
assumes the default ambient CO
2
level of 386 ppm. However, if:
• the purge line wasn’t connected to the instrument, or
• the purge line was not terminated in fresh air,
then the sensor baseline may be compromised. If you suspect that the baseline was compromised, then
you can re-establish the proper CO
2
sensor baseline by ensuring the purge line is properly installed and
following the procedure below.
1. Restart the monitor by either (a) cycling the power, or (b) pressing the CPU reset switch on the
main printed circuit board (see Figure 3-6).
Figure 3-6. Location of CPU Reset Button
WARNING: If using the CPU reset switch to restart the instrument, extreme care
should be exercised when accessing the interior of the monitor. This includes
touching a non-painted area of the MZ chassis to provide proper grounding prior to
touching the CPU reset switch or any other internal components. Failure to touch a
grounding area can allow static electricity on your clothing or body to damage the
monitor. Such damage is not covered under warranty.
2. After the restart and the warm-up have completed, the instrument is ready for use.
CPU Reset
Switch