Comark N9005 - Manual (Page 12)

11
Should you wish to check the accuracy of your thermometer
at other temperatures it is more difficult without sophisticated
equipment.
If you intend to use your thermometer to check other equipment
or processes as part of a BS5750/ISO9000 procedure or to
check compliance with other codes of practice, you may require
either UKAS or National Standards certification. Comark can
offer calibration to both standards. Please contact our UKAS
accredited laboratory for further details.
11. TAKING A TEMPERATURE MEASUREMENT
Position the probe in the place you wish to take the
measurement and record a reading when the temperature has
stabilised.
Note: Do not expose thermistor probes to temperatures outside
the range –80°C to +150°C and avoid thermally shocking
probes by rapid heating or cooling.
12. PROBE SELECTION
Penetration Probes
For product temperatures use the stainless steel ‘penetration’
probe. Insert the probe at least 25mm into the product or
preferably to the centre of the product. Allow sufficient time
for the reading to stabilise. Typically you will need to wait 30
seconds in a liquid and up to 2 minutes in a dry powder. Try
some experiments yourself.
Note: To avoid cross contamination properly clean your probe
after each measurement.
Order: Thermistor - PX22L (White cap),
PX23L (Red cap), PX24L (Green cap) or
PX25L (Blue cap)
Thermocouple - PK24M, PT22M
FIG.1 PX22L PENETRATION PROBE
(MAX. TEMP. +150°C)