AM1760/1762 Secondary SPRT

AM1760 series Secondary Standard PRT provides our customers an affordable SPRT alternative for precision temperature measurement and calibration in labs and fields. This SPRT features accuracy of ±0.006°C at 0.01°C , short term stability of ±0.002°C and very low drift rate of less than 19 mK after 500 hours. Two different lengths of SPRTs are available at 12-inch and 20-inch.
The sensing element is designed to protect the platinum sensing wire from contamination at high temperatures, giving the device a high level of stability and repeatability in performance. A uniquely designed support structure and filling material provides excellent balance between the hysteresis effect, mechanical shock and thermal shock performance. This high performance probe fully meets ITS-90 criteria for reference thermometers.
Temperature range: -200 °C to 670 °C
Accuracy: ±0.006°C at 0.01°C
Long term drift: ±0.019°C
Short term stability: 0.002 °C
Temperature Coefficient 0.003925
Inconeltm sheath
Customized dimensions available


    Temperature Range
    -200°C to 670°C
    Resistance at 0 °C
    1760 – Nominal 100 Ω
    1762 – Nominal 25 Ω
    Temperature Coefficient
    0.003925 Ω/ Ω/°C
    ±0.007°C at -196 °C
    ±0.006°C at 0.01 °C
    ±0.015°C at 420 °C
    ±0.025°C at 660 °C
    ±0.004°C at 0 °C after 100 hours at 660 °C
    Short Term Stability
    Thermal Shock
    ±0.002°C after 10 times thermal cycles from minimum to maximum temperatures
    0.0015 °C at 1 mA current
    Response Time
    9 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
    42 mm
    Sensor Location
    5 mm from tip
    Insulation Resistance
    >1000 MΩ at room temperature
    Sheath Material
    1760/1762-12: 0.25 inch X 12 inch (6.35 mm X 305 mm)
    1760/1762-20: 0.25inch X 20 inch (6.35 mm X 500 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
    1760/1762-12-T, Secondary SPRT with NIST traceable calibration and data
    1760/1762-20-T, Secondary SPRT with NIST traceable calibration and data

  • Optional Accessories

    Wooden Carrying Case for 1760/1762-12
    Wooden Carrying Case for 1760/1762-20

  • Download

    TypeStandard BathCustom Bath

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