Hach Ultra MET ONE 237AB, User Manual

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Section 5 Operation
The MET ONE 237 particle counter must be configured before operation for parameters
such as sample time and count alarm thresholds.
5.1 Front panel overview
The front panel of MET ONE 237 (refer to Figure 7 ) particle counter consists of:
• Status indicators—Show the current state of the counter
• Mode Key/Indicator—Shows the operating mode of the counter
• Display mode indicators—Show the current display mode
• LED display—3-digit display shows parameter and 7-digit display shows value
• Control keys—Used to operate the counter
Table 1 provides a description about indicators and key features or functions.
Figure 7 Front panel of the MET ONE 237 particle counter
1 Status indicators 4 Control keys
2 Display mode indicators 5 Mode keys
3 LED display
Table 1 Indicators and key features or functions
Key Name Description
RUN/STOP
Initiates a 6-second count cycle based on factory default settings. The red light in the
RUN portion lights and the pump starts operating.