AM1730 series Secondary Reference PRT provides our customers an affordable reference probe for precision temperature measurement and calibration in labs and fields. The PRT features accuracy of ±0.015°C, short term stability of ±0.007°C. Two different lengths of PRTs are available at 9-inch and 12-inch. To reach the best performance in stability and repeatability, the sensing element is 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. This high performance probe meets ITS-90 criteria of reference thermometer fully.

  • Temperature range: -200 °C to 420 °C
  • Accuracy: ±0.015 °C
  • Long term drift: ±0.01 °C
  • Short term stability: 0.007 °C
  • Durable and shock resistance
  • Temperature Coefficient 0.003925
  • W(Ga)>=1.11807
  • Inconeltm sheath
  • Customized dimensions available
Temperature Range 1730-12: -200°C to 420°C 1730-9: -60°C to 300°C
Resistance at 0 °C Nominal 100 Ω
Temperature Coefficient 0.003925 Ω/ Ω/°C
Accuracy ±0.025°C at -196 °C ±0.015°C at 0.01 °C ±0.035°C at 420 °C
Drift ±0.01°C at 0 °C after 100 hours at 420 °C
Short Term Stability ±0.007°C
Thermal Shock ±0.005°C after 10 times thermal cycles from minimum to maximum temperatures
Hysteresis <=0.005°C
Self-heating 50 mW/°C
Response Time 9 seconds for 63{f2d75a6b7d0fe049c173b1b8e8fb128a0cddb2c9179e3e439d4968f3513d2996} 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 Inconeltm
Dimension 1730-12: 0.25 inch X 12 inch (6.35 mm X 309 mm) 1730-9: 0.187 inch X 9 inch (4.75 mm X 229 mm)
External Leads Teflontm –insulated copper wire, 4 leads, 2.5 meters
Handle Dimension 1730-12: 15mm (OD) x 65mm (L) 1730-9: 10mm (OD) X 50 mm (L)
Handle Temperature Range** -50°C to 180°C
Calibration Options 1730-12-T, PRT with NIST traceable calibration and data 1730-9-T, PRT with NIST traceable calibration and data NVLAP – Accredited Calibrations available per request
Model Description
9001 Wooden Carrying Case

AM1730 brochure (PDF Download 464Kb)