AM1760AM1760

AM1760/1762 Secondary SPRTs

 

 

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Description

AM1760/1762 Secondary SPRTs

  • Rtpw Drift: <4 mK after 100 hours at 661 °C
  • Accuracy: ±0.006 °C at 0.01 °C
  • Temperature range: -200 °C to 670 °C
  • Customized dimensions available
AM1760 series Secondary Standard PRT provides our customers reliable secondary standards that can be used daily in their labs. 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 4 mK after 100 hours at 661 °C. 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.

Features

  • 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
  • W(Ga)>=1.11807
  • Inconeltm sheath
  • Customized dimensions available

Specifications

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
Accuracy
±0.007 °C at -196 °C
±0.006 °C at 0.01 °C
±0.015 °C at 420 °C
±0.025 °C at 661 °C
Drift*
±0.004 °C at TPW after 100 hours at 661 °C
Short Term Stability
±0.002 °C
Thermal Shock
±0.002 °C after 10 times thermal cycles from minimum to maximum temperatures
Self-heating
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
Inconeltm
Dimension
1760/1762-12: 0.25 inch X 12 inch (6.35 mm X 305 mm)
1760/1762-20: 0.25 inch X 20 inch (6.35 mm X 500 mm)
External Leads
Teflontm –insulated copper wire, 4 leads, 2.5 meters
Handle Dimension
15 mm (OD) X 65 mm (L)
Handle Temperature Range**
-50 °C to 180 °C
Optional Calibration
NIST traceable calibration and data available per request: Ordering # 5007
  *Long-term drift rate is for reference only. It could be affected by such facts as handling, application, and maintenance, etc.
  **Handle temperature outside this range will cause damage to the probe.

Optional Accessories

Model
Description
9001
Wooden Carrying Case for 1760/1762-12 included
9002
Wooden Carrying Case for 1760/1762-20 included

Knowledge and Information