PROCESSING SAMPLES 17
2.6 Testing Probe Performance
The following test should be carried out so that users may monitor the
performance of each probe.
Measure the temperature rise obtained at maximum power after 5 minutes with
the following volumes of chilled water (i.e. below 10°C).
Probe Volume of Chilled Water
Exponential 15ml
9.5mm 50ml
19mm 100ml
A temperature rise of approximately 35°C should be obtained. If the rise is not
obtainable, the probe or the transducer is at fault. To pinpoint the part of the
system, which is faulty, repeat the test with an UNUSED probe. If you still do
not obtain a temperature rise of approximately 35°C, then contact the service
centre at the address inside the front cover.
The service centre will give you more advice.
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