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Immersion sensor boasts fast, accurate fluid temperature sensing

25 Aug 2014

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Vishay Intertechnology Inc. has rolled out a miniature immersion sensor for fluid temperature sensing from its Vishay BCcomponents non-linear resistor division. Available in a stainless steel housing for permanent contact with fluids, the NTCAIMME3 claims to offer a very fast response time of 1.5s, low thermal gradient of < 0.02K/K and high base temperature accuracy of ±1.5°C.

The device consists of an NTC thermistor chip mounted in its stainless steel housing with twin PVC-insulated AWG #30 lead wire connections. The sensor features a small tip with a 2mm diameter, which allows for fast, accurate temperature sensing with little heat loss through the connecting wires. The device is available with a brass collar for sealed mounting, or without a collar for custom mounting.


For designers, the NTCAIMME3 provides a fast response to fluid temperature changes in a range of applications including liquid processing equipment, water boilers, chiller systems, water and oil tanks, consumer and industrial appliances, medical fluid circulators and solar heating systems.

The RoHS-compliant sensor offers resistance at 25°C (R25) of 10kΩ, with tolerance of ±3 per cent, and beta (B25/85) of 3984K, with tolerance of ±0.5 per cent. The device features maximum power dissipation of 100mW and operates over a temperature range of -25°C to 105°C.

Samples and production quantities of the NTCAIMME3 are available with lead times of eight to 10 weeks for large orders.


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