The TH-21 Series thermistor probes are constructed
with the 55000 Series glass encapsulated
thermistor elements which provide excellent
stability and accuracy.
With a maximum continuous temperature rating of
-80 to 200°C (-112 to 392°F), and intermittent
operation to 250°C (482°F), these thermistor
sensors can be used in applications previously
out of reach of epoxy coated thermistor sensors.
The probes can be ordered in any length but we
highly recommend a minimum immersion depth
of 1.5". Short probes run the risk of error due
to stem conduction effects.
Specifications Temperature Range: -50 to 200°C (-58 to 392°F) at Sensing End Probe Connector Temperature: 85°C (185°F) Max Thermistor Sensor: Refer to Table 1 on next page Operating Current: 12 micro-amps Insulation Resistance: 100 MΩ minimum at 100 Vdc at ambient temperature Response Time: Approximately 7 seconds (50%), 8 seconds (63.2%), 14 seconds (90%) in water flowing at 0.91 m (3') per second External Materials: 316L stainless steel sheath and housing except connector insert IP Rating: IP67 with mating connector installed
All dollar amounts on this site are shown in Canadian currency.Note: For lengths other than 6", change “-0600” in model number to required length and add $1 per inch greater than 6", (example: 9" = 0900, 41/2" = 0450). For 1/8" probe diameters, change “-1/4” in model number to “-1/8”, no additional cost. For 3K, 5K or 10K Ohm thermistor elements change “-2252” to desired resistance. •For Dual element probes, add "-DUAL" to the end of the Model Number and multiply the price by 1.75 Ordering Example: (1) TH-21A-2252-1/4-0600-M12 Straight sheath, 1/4'' diameter, 6'' long, M12 male connector, CAD81.00
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Design select from: A for Plain no thread B for 1/2 NPT mounting thread C for 3/8 NPT Mounting thread D for 1/4 NPT Mounting thread E for M8x1 Mounting thread F for M10x1 Mounting thread G for G1/2 mounting thread H for G1/4 mounting thread
Diameter select from: 1/4 for 1/4 in diameter M6 for 6 mm diameter
Probe Length select from: 0600 for 6 in 0150 for 150 mm
Additional Option select from: Nothing(leave field blank) for None -DUAL for Dual element version
Note: All combinations may not be valid, check spec sheet for valid part numbers.