The 6150AD is a portable, battery operated dose rate meter to measure photon radiation (gamma and X
radiation). A built-in GM counting tube serves as the detector..
The internal counting tube is operated from a 500 V high voltage! Touching that high
voltage may be hazardous to your health, so never try to open or repair the instrument!
The 6150AD comes in various models that differ by the type of built-in GM tube and by the scope of
functions. Section 2 summarizes the various models.
As implied by the letters »AD« in its name, the 6150AD displays dose rate in both analog and digital
form. Furthermore, it permanently measures dose rate mean value, dose rate maximum value, and
accumulated dose. You may look at any of those values at any time just by pressing a key. At low levels,
the dose rate mean value permits much more accurate readings than the normal dose rate indication with
its statistical fluctuations would allow. This is particularly useful when measuring low contamination
values with external probes.
All models have alarm thresholds for dose rate, some models also for dose. Some models have
programmable thresholds that allow you to set alarm thresholds to any value within the instrument’s
range. All models support audible single pulse detection.
Particular advantages of the 6150AD are its robust and waterproof construction, and its simple operation.
Automatic range selection and clear LCD indications help to avoid operational errors.
The 6150AD supports various probes for various applications: measurement of low or high dose rate
photon radiation, detection of alpha and beta radiation, measurement of contamination of solids or
liquids. Therefore, the 6150AD - with an external probe if necessary - is well suited for many radiation
protection measuring tasks.
This manual shall not discuss the radiological features of the probes; there are separate manuals for the
probes. This manual only describes those probe features that are determined by the 6150AD and not by
the probe itself. Among the features determined by the 6150AD are, for example, ranges and alarm
thresholds of the probes.
One pin of the probe connector is a serial interface that allows to read and process dose rate by a
The various models reflect the instrument’s history. Serial production started in 1986 with models
6150AD1 and 6150AD2. These two models differ by the type of built-in counting tube and therefore by
range. The 6150AD1 has a smaller, that is less sensitive tube (type ZP1310) covering dose rates up to
1 Sv/h. The 6150AD2 has a larger tube (type ZP1200) which only covers dose rates up to 10 mSv/h, but
which is better suited for low levels because of its higher sensitivity. The more favourable model depends
on the application. If dose rates above 10 mSv/h are unlikely to occur, the 6150AD2 is preferred,
otherwise the 6150AD1. As far as operation and function are concerned, both models are completely
To Next Page
Loading...
Need help?
General
