Regal RH40, Руководство пользователя

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in this window as well. The remaining working time is estimated based on the battery voltage at the time.
Some errors may occur, especially when the terminal voltage is in the range between 3.70 to -3.90
volts.
For battery maintenance and replacement, please refer to Appendix §9.1.A
§2.2 Power On
Press the ON key to turn on the power, and OFF to turn off the power. Once the flow meter is turned on,
it will run a self-diagnostic program—checking the hardware first, and then, the software integrity. If
there are any abnormalities, corresponding error messages will be displayed. (See Section §6 for more
information on error messages.)
Under normal conditions, there should be no display of error messages, and the flow meter will proceed
to the main window. This menu can also be accessed at any time by pressing the (“Ex”) key up to
three times, depending on the menu window in use at the time. The main menu will display the signal
strength, signal quality, and transit-time ratio. These readings are based on the most recent pipe
parameters configured, or by the initial program.
The flow measurement will keep running in the background without change, regardless of any user
window browsing or viewing activities. Only when the user enters new pipe parameters will the flow
meter change measurement to reflect these alterations.
When new pipe parameters are entered or when the power is turned on, the flow meter will enter into a
self-adjusting mode. The device will account for the increase in receiving circuits so that the signal
strength will be within a proper range. Using this step, the flow meter finds the best receiving signals.
See Section §2.6 for more information of configuring the pipe parameters.
When the user adjusts the position of the installed transducers, the flow meter will re-adjust the signal
gain automatically. Any user-entered configuration value will be stored in the NVRAM (non-volatile
memory), until it is modified by the user.
§2.3 Keypad

The SET key is used to configure the pipe parameters.

The LOG key is used to set up and view the built-in data-logger.