Manufacturer of Custom Temperature Sensors

Temperature & Pressure Solutions Made Easy
Phone: 800-284-3769 Fax: 858-573-0623

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Available Products

Air Probes
Alumina Tubes
Autoclave Thermocouple
Carbon Dioxide
CO2 Transmitters
CO2 Handhelds

Cement On Thermocouple

Digital Thermometers
Extension Wire
Freezer Probe

Humidity Handhelds

Humidity Probe
Humidity Sensors
Humidity Transmitters

Mulite Tubes
Multipoint Thermocouples
Panel Jacks
Partlow Controllers
Partlow Recorders
Pressure Calibrators
Pressure Transducers
Pressure Transmitters

Protection Heads
RH Probes
Precision RTD Scanner
RTD Probes

RTD Data Logger
Surface RTD Probe
Surface Thermocouple
Surface Thermistor Probe
Temperature Calibrators
Temperature Transmitters

Thermocouple Strip Panel
Thermocouple Wire
Thermistor Probes
WIKA Pressure Transmitters
Validation Thermocouples
West Instruments


Both the 44000 and 55000 series thermistor offers high precision thermistor elements, customizable probes and assemblies to provide precise and reliable temperature measurement in the most demanding applications. There are 28 probe style to choose from which can be configured to measure temperature in a variety of application media: surface, liquid, air, or block. Match any Precision Interchangeable Thermistor with cable and sheath options to create a custom probe for your temperature measurement application. Below are a few of their most popular elements. Please call for custom probe configurations.


The 44000 series thermistors provide highly accurate and stable temperature sensing for measurement, control, indication and compensation. The tight interchangeability of the precision components allows precise measurement without calibration of circuitry to match individual components.

This series of thermistors offers two interchangeability tolerances (±0.2°C, ±0.1°C). Standard resistances from 2252 ohms to 30 Kohms at 25°C.


Choose the epoxy-encapsulated components for applications where cost, flexibility, and a wide range of resistance values are important. The 44000 Series is available in both ±0.2°C and ±0.1°C interchangeability tolerances.

The 55000 Series GEM Thermistors
Available Cofigurations and Specifications

The newest thermistor product line combines the benefits of high accuracy and super-stable thermistors with low cost. The result is a unique product line that defines a new cost-versus-performance model for glass-encapsulated thermistors.

The GEM Thermistors use a specially formulated glass material which provides a hermetic package rugged enough for most industrial applications. The product has high-temperature capability, to 200°C, and improved stability compared to epoxy- or plastic-encapsulated thermistors. Automated manufacturing of the 55000 Series allows unprecedented process control in thermistor calibration and glass encapsulation.

This series thermistors offers two interchangeability tolerances (±0.2°C, ±0.1°C). Standard resistances from 2252 ohms to 30 Kohms at 25°C.

Performance Advantage
Excellent long-term stability
Broad temperature range to 200°C
Hermetically sealed in glass

The Gem Thermistor is ideal for applications which require high stability up to 200°C and are subject to a high-moisture environment. Temperature compensation for sensitive electronic circuits such as precision clocks, communications devices, and medical and scientific instruments achieve improved results with the GEM Thermistor.