Power Indicator Light - Hach Sigma 950 Instrument Manual

An optional six-digit non-resettable mechanical totalizer is available for the flow meter. Located below
the Humidity Indicator, the totalizer indicates total flow and supplements the internal software totalizers
(one resettable and one non-resettable) that are configured during programming.
Mechanical The totalizer can be configured for all conditions and installations because flow units and scaling are
6 Totalizer selectable. To select flow and scaling factors for the mechanical and internal software totalizers see
Option Flow Totalizer on page
To obtain the total flow for any period of time, record the number at the start of the time period,
subtract it from the number at the end of the period, and then multiply the difference by the scaling
factor.
The Display push-button is located on the upper right side of the case. It allows you to read the display
without opening the cover.
The 950 Flow Meter is optimized for portable (battery-powered) use. Its unique power saving modes
conserve battery resources by putting the meter to "sleep" during any period of inactivity.
Display
During battery operation or ac power with the screen saver enabled, pressing the Display push-button
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Button
will "wake up" the flow meter and cause it to turn on the display. The Status Screen is the first screen
displayed. Another press of the button causes the display to show additional status information, if
necessary. Continuing to press the Display push-button will return you to the initial Status Screen after
all information has been shown.
After three minutes of inactivity, the display goes blank to conserve battery power.
8 Soft Keys —
The white keys located just above the numeric keys are function keys that are used often while
operating the flow meter. These functions are dedicated keys to allow quick access.
Main Menu: This is the program starting point. Press the Main Menu key at any time during
programming to return to the Main Menu Screen. The current action is cancelled if changes are not yet
Function
9
accepted.
Keys
Level Adjust: Adjust the flow meter to match the current head (or level contributing flow) in the
channel.
Run/Stop: Run (or resume) a program. Stops a currently running program.
Numeric The numeric keypad is located below the function keys. It consists of the digits 0 through 9, a +/- key,
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Keypad and a decimal key.
Power
11 To turn the flow meter power on/off use the
On/Off

3.2.1 Power Indicator Light

95.
When the unit is turned on, a green light located next to the
not indicate that a program is running but indicates that the unit has power because
under some conditions (battery operation or Screen Saver mode), the display may
automatically turn off to conserve battery power.
See Screen Saver Mode on page 97
Saver feature.
and keys.
ON OFF
ON
for details on battery operation and the Screen
Introduction
key flashes. This does
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