AccuMac AM1751
Secondary Reference PRT
• 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
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 NIST-traceable certificate of calibration.
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General Specifications |
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AM1751-12 |
AM1751-BEND |
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Temperature Range |
-200°C to 670°C |
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Nominal Resistance at 0.01°C |
100 Ω |
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Temperature Coefficient |
0.003925 Ω/Ω/°C |
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Calibrated Accuracy (k=2) [1][2] |
±0.025°C at -40°C |
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±0.015°C at 0.01°C |
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±0.035°C at 420°C |
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±0.05°C at 661°C |
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Long Term Drift at 0.01°C [3] |
<0.01°C at TPW after 100 hours at max temperature |
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Short Term Stability |
<0.007°C |
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Thermal Shock |
<0.005°C after 10 thermal cycles from minimum to maximum temperatures |
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Hysteresis |
≤0.005°C |
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Self-heating |
50 mW/°C |
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Response Time [4] |
9 seconds |
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Measurement Current |
0.5 mA or 1 mA |
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Sensor Length |
1.26 in (32 mm) |
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Sensor Location |
0.12 in (3 mm) from tip |
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Insulation Resistance |
>1000 MΩ at room temperature |
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Sheath Material |
Inconel™ |
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Sheath Dimensions |
0.25 in (6.35 mm) (OD) |
0.25 in (6.35 mm) (OD) |
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X 12 in (305 mm) (L) |
X 9.75 in (247.65 mm) vertical |
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X 4.5 in (114.3 mm) horizontal |
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External Leads |
Teflon™ insulated copper wire, 4 leads, 6.5 feet (2 meters) |
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Handle Dimensions |
0.59 in (15 mm) (OD) |
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X 2.56 in (65 mm) (L) |
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Handle Temperature Range |
-50°C to 180°C |
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Calibration |
NIST-Traceable calibration with data [5] |
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[1] Includes calibration and 100 hour drift. |
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[2] Probe calibration ranges may differ from probe temperature ranges (see Calibrated Accuracy for calibration ranges). |
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[3] Long-term drift rate is for reference only. It could be affected by such facts as handling, application, and maintenance, etc. |
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[4] For 63% response to step change in water moving at 1 meter per second. |
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[5] For 17025 accredited calibration, please contact Additel |
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Optional Accessories |
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Model |
Quantity |
Description |
Picture of Optional Acccesory |
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9070 |
1 pc |
Smart connector for reference PRT for use with Additel temeprature products |
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9071 |
1 pc |
Connector adapter from Additel smart connector to 4-wire with gold plated spades |
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9072 |
1 pc |
Connector adapter from Additel smart connector to 4-wire with clamps |
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Documents and Links |
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