Fluke Datapaq Food Tracker User Manual page 27

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TB5821 Submersible, low-height – short fry/steam processes
Front-loaded. Supplied with different face-plate plus logger-tray according to
use: 6-channel, 8-channel, or 8-channel plus RF antenna.
Temp °C
Temp °F
Duration (mins)
Air
Dimensions
Heatsink
Accessories
Due to continuing product development, specifications are subject to change
Other Barrier Types
A wide range of thermal barrier types is available from Datapaq for use with
loggers other than the MultiPaq21.
Thermocouple Probes
Thermocouple probes utilize the Seebeck effect, discovered in the nineteenth
century, by which an e.m.f. is produced in any electrically conducting material
that is not at uniform temperature. The actual voltage measured is proportional
to the temperature difference between the thermocouple's 'hot' and 'cold'
junctions (the hot junction being the measurement junction, and the cold
junction being the junction of thermocouple and measurement instrumentation).
The practical implementation of thermocouples requires sophisticated electronics
to eliminate potential measurement errors which include poor linearity over the
measurement range, and inaccuracy due to temperature variations at the cold
junction. To accommodate these the electronics in the measuring system must
simulate a temperature of 0°C at the cold junction, as well as compensating for
any non-linearity over the range of thermocouple operation.
Over the years, 'standard' thermocouples have been developed using materials
chosen for sensitivity, linearity (consistency of sensitivity over the useful
temperature range), price and availability. Current standards include types K, N,
FOOD TR ACK ER
−100
100
150
−148
212
302
120
60
Height
Width
40 mm
140 mm
1.6 in.
5.5 in.
None
Finger screw, small – TB9569A56
Spanner – TB9569A51
O-ring – SC1220A
without notice.
200
250
392
482
45
30
Length
Weight
318 mm
2.5 kg
12.5 in.
5.5 lb
Hardware
27

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