AM1760/1762 Secondary SPRT’s

Overview

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.

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
  • Customized dimensions available

Videos/Photos

Specifications

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 660 °C
Drift* ±0.004°C at 0 °C after 100 hours at 660 °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: 0.25inch 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

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

Downloads

AM1760-1762 brochure (PDF Download 470Kb)

CONTACT US