AM1660/1640/1620 Precision Industrial PRTs

AM1620/1640/1660 series precision industrial PRTs are top choices when price-to-performance is considered. They cover a wide range of temperature from -200 °C to 670 °C with amazing accuracy of ±0.035°C at 0 °C, short term stability of ±0.01°C and fast respond time of 5 seconds. These industrial PRTs come with standard length 12-inch but customized dimensions are available per request.
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 shock and thermal shock performance. All of these probes conform to the standard 385 curve so the resistance ratio of the PRT follow DIN/IEC-751 curve precisely.
Temperature range: -200 °C to 670 °C
Accuracy: ±0.035 °C at 0 °C
Long term drift: ±0.04 °C
Short term stability: 0.01 °C
Durable and shock resistance
Temperature Coefficient 0.00385
Follow DIN/IEC-751 precisely
Inconeltm sheath
Quick response time
Customized dimensions available


    Temperature Range
    1660: -200°C to 670°C                       
    1640: -200°C to 420°C                       
    1620: -60°C to 300°C
    Resistance at 0 °C
    Nominal 100 Ω
    Temperature Coefficient
    0.00385 Ω/ Ω/°C
    ±0.04°C at -200°C
    ±0.035°C at 0°C
    ±0.05°C at 200°C
    ±0.09°C at 420°C
    ±0.15°C at 660°C
    ±0.04°C at 0 °C after 100 hours at 420 °C
    Short Term Stability
    Thermal Shock
    ±0.007°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
    0.5 mA or 1 mA
    Sensor Length
    32 mm
    Sensor Location
    5 mm from tip
    Insulation Resistance
    >1000 MΩ at room temperature
    Sheath Material
    1660/1640: Inconeltm
    1620: 316 Stainless Steel
    0.25 inch X 12 inch (6.35 mm X 305 mm)
    External Leads
    Teflontm –insulated copper wire, 4 leads, 2.5 meters
    Handle Dimension
    15mm (OD) X 65 mm (L)
    Handle Temperature Range*
    -50°C to 180°C
    Calibration Options
    1660-12-T, PRT with NIST traceable calibration and data
    1640-12-T, PRT with NIST traceable calibration and data
    1620-12-T, PRT with NIST traceable calibration and data
    NVLAP – Accredited Calibrations available per request

  • Optional Accessories

    Carrying Case

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    TypeStandard BathCustom Bath

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