AM1642 Full Immersion PRT


  • Transition junction and lead wire can withstand high temperature up to 420°C
  • Accuracy ±0.04°C at 0°C
  • Temperature range: 0°C to 420°C
  • Customized dimensions available


AM1642 full immersion PRT features a unique design that allows for the users to apply the probe together with its lead wire in a high temperature environment such as ovens or furnaces etc. It covers a wide range of temperature from 0 °C to 420 °C with amazing accuracy of ±0.04°C at 0 °C, short term stability of ±0.02°C and fast respond time of 5 seconds. The standard length is 4-inch but customized dimensions are available per request. Customized length can range from 2 inches to 12 inches.   
To reach the best performance in stability and repeatability, the wire-wound sensing elements are specially designed to protect the platinum sensing wire from contamination at high temperature. A unique support structure and filling material provide the best balance among the hysteresis effect, mechanical shocks and thermal shock performance. This probe conforms to the DIN/IEC-751 curve precisely


  • Temperature range: 0 °C to 420 °C
  • Accuracy: ±0.04 °C at 0 °C
  • Long term drift: ±0.04 °C
  • Short term stability: 0.02 °C
  • Transition junction and lead wire can withstand the full temperature range of the PRT
  • Temperature Coefficient 0.00385
  • Follow DIN/IEC-751 precisely
  • Inconeltm sheath
  • Quick response time
  • Customized dimensions available


Temperature Range
0°C to 420°C                                      
Resistance at 0 °C
Nominal 100 Ω
Temperature Coefficient
0.00385 Ω/ Ω/°C
±0.04°C at 0°C
±0.05°C at 200°C
±0.07°C at 420°C
±0.04°C at 0 °C after 100 hours at 420 °C
Short Term Stability
Thermal Shock
±0.02°C after 10 times thermal cycles from minimum to maximum temperatures
50 mW/°C
Response Time
5 seconds for 63% response to step change in water moving at 3 feet per second
Measurement Current
1 mA
Minimum immersion depth
50 mm
Maximum immersion depth
Dry medium: full immersion
Liquid medium: use protective tube if immersion depth reaches transition junction
Sensor Length
30 mm
Insulation Resistance
>500 MΩ at room temperature
Sheath Material
0.125 inch X 4 inch (3 mm X 100 mm)
(length of the probes can be customized per request, range from 2 inches to 12 inches)
External Leads
Four fiberglass insulation Ni-plated copper wires, 2.5 meters (longer lead wires are available per request)
Handle Dimension
6.4 mm (OD) X 25 mm (L)

Optional Accessories

Wooden Carrying Case

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