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Industrial Thermocouple Probes
We supply a range of probes designed for use with the FK Series of panel thermometers and thermostats. Alternative probe designs can be manufactured, contact the Rototherm Sales Office for details
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Order Code |
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T/C Type |
Operating Temperature |
Probe Dimensions |
Description & Applications |
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133-444
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Type K
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Max. +200°C
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Ø4.8 x 150mm
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This general purpose, rigid, stainless steel, industrial probe is suitable for a wide variety of temperature measurement or control applications. Supplied with two metre PVC lead. Maximum tip temperature +200°C. |
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133-449
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Type K
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Max. +200°C
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Ø6 x 150mm
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This heavy duty, rigid, stainless steel, industrial probe is suitable for a wide variety of temperature measurement or control applications. Supplied with two metre PVC lead. Maximum tip temperature +200°C. |
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133-499
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Type K
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Max. +200°C
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Ø6.35 x 150mm
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This air or gas rigid, stainless steel, industrial probe is suitable for a wide variety of temperature measurement or control applications. Supplied with two metre PVC lead. Maximum tip temperature +200°C. |
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133-481
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Type K
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Max. +80°C
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70 x 70 x 28mm
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This wall mounted air probe is housed in a black ABS case. All lead connections are made via internal screw terminals. Supplied with two metre PVC lead. Maximum case temperature +80°C. |
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133-350
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Type K
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Max. +100°C
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100 x 100 x 10mm
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This food simulant probe is designed to continuously simulate the temperature of foods in fridges, freezers and chill cabinets. Supplied with two metre PTFE lead. Maximum probe temperature +100°C. |
Thermocouple Probes
A
thermocouple probe consists of two dissimilar metals or metal alloys that
are welded together to form a 'hot junction' measuring sensor. The other end
of the thermocouple probe is connected to the measuring instrument, normally
via a miniature connector. Within the instrument a second junction is formed
electronically, this is normally referred to as the 'cold junction'. When a
temperature difference exists between the two ends (Seebeck effect), a
voltage is generated which is proportional to the temperature difference.
Cold junction compensation techniques are used to correct for instrument
variations in ambient temperatures to give meaningful and accurate
measurements. Thermocouples of a given type generally produce repeatable
results and are therefore interchangeable.
Type K thermocouples are robust and durable and recognised as the most frequently used thermocouple type. Type K thermocouples are ideal for general purpose applications when monitoring over a wide temperature range.
Type T thermocouples are ideal for applications which require a higher accuracy but are only suitable to measure over a limited temperature range.
Type J thermocouples are general purpose thermocouples with a lesser accuracy.
THERMOCOUPLE ACCURACIES/TOLERANCES TABLE
|
Type |
Description/Conductors |
Temperature Range |
BS EN 60584-2:1993 Class 1 Tolerances |
Thermocouple Probe Tolerances |
|
K
|
Nickel Chromium/Nickel Aluminium (Ni-Cr/Ni-Al) |
-210°C to +1372°C |
±1.5°C -40 to +333°C
|
±1.5°C -40 to 0°C |
|
T
|
Copper/Constantan (Cu/Con) |
-210°C to +400°C |
±0.5°C -40 to +125°C
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±0.5°C -40 to -20°C
|
|
J
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Iron/Constantan (Fe/Con)
|
-180°C to +1200°C |
±1.5°C -40 to +375°C
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±1.5°C -40 to 0°C
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