Specifications

Multi-Zone Gas Monitors

P/N: 3015-5074 Rev 10 19

NOTE: The PC software is not compatible with 64-bit (or newer) computers.

NOTE: The PC software uses COM1 by default. Therefore, the interface cable should be

connected to the port configured as COM1 on the PC. Also, no other software drivers or

devices in the computer may control COM1 when the MZ software is in use. Alternatively,

COM2 (for example) may be used by adding a space and the number 2 to the command

line as follows:

C:\pc2HGM.exe 2

When using a USB to serial converter, be sure it has been mapped to COM1 or COM2.

The connection is made through a standard “straight through” serial port connection. A

three-wire connection is used (RXD, TXD, and GND). No hardware flow control is used.

The MZ software automatically configures COM1 to match the MZ RS-232

communications parameters.

NOTE: Occasionally, the laptop connection will not connect properly and only two beeps

are heard and the program times out. To resolve this, disconnect the RS-232 cable and

cycle power on the MZ and the laptop. After both are operational, connect the RS-232

cable and start the software program.

1. Apply power to MZ monitor and allow it to warm up. Note that on CO

models, a “Clearing Purge

Line” message is displayed for approximately 2.5 minutes before warm up begins.

2. Connect RS-232 interface cable to the PC and RS-232 port on the MZ monitor.

3. Insert software disk into the PC.

4. Open the MZ software using Windows Explorer.

5. Upon start up, the program will immediately attempt to download data from the MZ, as indicated by

several beeps.

Navigate using your PC keyboard:

• Use the up, down, left, and right arrow keys to navigate through the screen options.

• Use the Enter key to select options.

• Use the Esc key to go back one step.

6. Go to EDIT. From the EDIT Menu, select SYSTEM. The monitors’ LOCATION becomes

highlighted. Press Enter to move to the TAG area. Use the Backspace key to remove the existing

tag. Enter a new tag. Press Enter to return to LOCATION. Select the next item to be addressed.

Note that you cannot change the “SN” or “FIRMWARE” items. Press the Esc key to return to the

menu bar.

7. Go to EDIT. From the EDIT Menu, select ZONES. Select a specific zone to identify and set

parameters. When REFRIGERANT is selected (Halogen Monitor), scroll through the gas library to

locate and select the gas type for that zone.

8. Setting the Alarms: Select EVAC LEVEL. Use the Backspace key to clear previous setting. Type in

the new PPM level. Use the same method to set the spill level and leak level.

9. To close or bypass a zone: Set the DISTANCE to 0 feet.