AM1751
Secondary Reference PRT
Price on request
The AM1751 series of Secondary Reference PRT offers affordable reference probes for precision temperature measurement and calibration both in the lab and in the field.
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The AM1751 series of Secondary Reference PRTs offers affordable reference probes for precision temperature measurement and calibration both in the lab and in the field. These PRTs feature an accuracy of <0.012°C and a short term stability of <0.007°C.
To reach the best performance in stability and repeatability, the sensing element has been specially designed to protect the platinum sensing wire from contamination at high temperatures. A unique supporting structure and filling material provide the best balance among the hysteresis effect, mechanical shock and thermal shock performance. This high performance probe fully meets the ITS-90 criteria for reference thermometers. Each probe comes standard with an ISO 17025 accredited calibration.
• Affordable Reference Probe
• Temperature Range: -200°C to 670°C
• Accuracy: <0.012°C at 0.01°C
• Short-term Stability: <0.007°C
• Temperature Coefficient 0.003925 Ω/Ω/°C
• Fully Meets the ITS-90 Criteria for Reference Thermometers
• Inconel™ Sheath to Withstand Harsh Environments
• ISO 17025 Accredited Calibration Included -
Specifications
AM1751-12AM1751-BEND Temperature Range -200°C to 670°CNominal Resistance at 0.01°C 100 ΩTemperature Coefficient 0.003925 Ω/Ω/°C
Calibrated Accuracy (k=2)[1][2]±0.025°C at -40°C±0.015°C at 0.01°C±0.035°C at 420°C±0.05°C at 661°CLong Term Drift at 0.01°C[3] <0.01°C at TPW after 100 hours at 661°CShort Term Stability <0.007°CThermal Shock <0.005°C after 10 thermal cycles from minimum to maximum temperaturesHysteresis ≤0.005°CSelf-heating 50 mW/°CResponse Time[4] 9 secondsMeasurement Current 0.5 mA or 1 mA Sensor Length 1.26 in (32 mm) Sensor Location 0.12 in (3 mm) from tip Insulation Resistance >1000 MΩ at room temperatureSheath Material Inconel™Sheath Dimensions 0.25 in (6.35 mm) (OD) x 12 in (305 mm) (L) 0.25 in (6.35 mm) (OD) x 9.75 in (247.65 mm) vertical
x 4.5 in (114.3 mm) horizontalExternal Leads Teflon™ insulated copper wire, 4 leads, 6.5 feet (2 meters) Handle Dimension 0.59 in (15 mm) (OD) x 2.56 in (65 mm) (L) Handle Temperature Range -50°C to 180°CCalibration NIST-traceable calibration with data[5][1] Includes calibration and 100 hour drift.
[2] Probe calibration ranges may differ from probe temperature ranges (see Calibrated Accuracy for calibration ranges).
[3] Long-term drift rate is for reference only. It could be affected by such facts as handling, application, and maintenance, etc.
[4] For 63% response to step change in water moving at 1 meter per second.
[5] For 17025 accredited calibration, please contact Additel. -
Documents:
Filename Upload date Size Additel AccuMac AM1751 Datasheet 2025.6.26 0.5 MB Probe Selection Guide 2025.6.26 0.3 MB