2.2.1 Startup screens
When a GMW80 series transmitter with a display is powered on, it shows a sequence of
information screens. The screens are shown for a few seconds each.
Figure 5 Example startup screens
The first screen shows the following information:
• Transmitter model, software version, and serial number.
• Serial number of the connected GM10 CO
2
measurement module. If the module is
disconnected, no serial number is shown.
• Transmitter status: OK or ERROR. If the status is ERROR, the cause of the error will be
shown on the measurement screen after the startup is completed.
The following screen(s) show the configuration of the active analog outputs:
• Output type (for example, 0 ... 10 V).
• Output parameter and unit (for example, CO
2
(ppm)).
• Output scaling (for example, 0 ... 2000 ppm).
2.2.2 Measurement screen
After the startup screens the transmitter shows the measurement screen. It shows the
measured parameters and an air quality indicator based on the current CO
2
level.
•
Good
air quality: 0 ... 800 ppm CO
2
•
Fair
air quality: 800 ... 1200 ppm CO
2
•
Poor
air quality: >1200 ppm CO
2
Chapter 2 – Product overview
13
