Indication of Dose Rate Maximum Value
The dose rate maximum value is displayed digitally with three digits:
The »max« symbol shows that this indication concerns the maximum value. With the 6150AD1/2 the
range starts at 0 µSv/h, with the 6150AD3/4/5/6 at 0.00 µSv/h. That is, the range of the 6150AD3/4/5/6 is
extended by two places after the decimal point.
Connecting or disconnecting a probe clears the current maximum value and starts its determination
again. Switching the instrument on also starts determination of the maximum value again. The
6150AD3/4/5/6 additionally allows to restart determination of the maximum value by pressing the
on/off key twice within three seconds.
In this state the signal key has no function.
The dose is displayed digitally with three digits. The 6150AD3/4/5/6 additionally displays an analog bar
graph representing the dose as a portion of the dose alarm threshold:
With the 6150AD1/2 the range starts at 0 µSv, with the 6150AD3/4/5/6 at 0.00 µSv. That is, the range of
the 6150AD3/4/5/6 is extended by two places after the decimal point. The »dose« of pulse probes, that is
the pulse count, is always represented as an integer value.
Note that the bar does not indicate the dose on a Sievert scale (this is why there are no scale divisions
along the bar), but as the portion of the dose alarm threshold. For example, if the threshold is 100 µSv,
and the dose is 50 µSv, that is half of the threshold, the first 16 of the 32 bar graph segments will be
visible. The bar acts as a level gauge, where »full« means dose alarm. Thus the user may easily recognize
what portion of the threshold the current dose corresponds to. In case of dose alarm, all of the 32 bar
graph segments and the loudspeaker symbol will be flashing, accompanied by the fast dose warning tone
with four sounds per second. If dose warning is disabled, the bar graph will be suppressed.
Each increase of the dose by one µSv is accompanied by a short sound.
external probe, e.g. 6150AD-17:
external probe, e.g. 6150AD-17:
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