|
 |
Overview
AM1750 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 at 0.01°C ; short term stability of ±0.007°C. Two different lengths of PRTs 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: ±0.015 °C at 0.01°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
Specifications
|
Temperature Range
|
1750-12: -200°C to 670°C
1750-20: -200°C to 670°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
±0.05°C at 660 °C
|
|
Drift
|
±0.01°C at 0 °C after 100 hours at 660 °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% 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
|
1750-12: 0.25 inch X 12 inch (6.35 mm X 305 mm)
1750-20: 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
|
1750-12-T, PRT with NIST traceable calibration and data
1750-20-T, PRT with NIST traceable calibration and data
NVLAP - Accredited Calibrations available per request
|
Optional Accessories
|
Model
|
Description
|
|
9001
|
Carrying Case for 1750-12
|
|
9002
|
Carrying Case for 1750-20
|