C.2.2 Display
Numeric concentration display
The concentrations are shown in the display in the following units:
Concentrations Unit
0 to 999ppm (0 to 0.09Vol.%) ppm
≥1000ppm (≥ 0.1Vol.%) Vol.%
Bar diagram
In the case of concentrations ≥ 0.1Vol.% there is a visual display in the form of a bar
diagram, in addition to the numeric display. The scale extends from 0.1Vol.% (1 segment
visible) to the lower explosion limit of the set gas (all segments visible).
The bar diagram shows the progress made during the warm-up or adjustment phase.
Audible concentration display
If the audible concentration display (beep sound with concentration-dependent
frequency) is switched on, the symbol appears in the display.
Rechargeable battery life
If the remaining life of the rechargeable battery is 15min is displayed and the
“Operate” LED flashes.
C.2.3 Keypad
Button Keep pressed until 1 beep sounds: Keep pressed until 2 beeps sound:
Switch detector on/off -
Display type of gas (in the warm-up phase: select type of gas) Switch “Relative display” on/off
Switch audible concentration display on/off In the warm-up phase: Open adjustment mode
Switch permanent display light on/off -
C.3 Power supply
Power is supplied by a built-in rechargeable battery. The power unit is used to recharge
the built-in rechargeable battery. It is not possible to use the power unit and recharge
the battery during operation. If the rechargeable battery is defective, it must be changed
at an authorised service point.
C. Product Description
C.2 Display and Control Elements
8
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