AM1758 Gradient PRT
Product Description
AM1758 Gradient PRT
- Vertical gradient measurement of dry block/dry well
- 6 mm sensing element
- Temperature range: -200 °C to 670 °C
- Short term stability: ±0.003 °C at 0.01°C
AM1758 is specifically designed to measure vertical gradients of dry blocks or dry wells. The length of the sensing element is only 6 mm, which allows AM1758 to measure detailed temperature changes inside the dry wells with pin point precision.
The short sensing element has adopted many of AccuMac’s PRT technologies to offer a high level of stability across the temperature range from -200 °C to 670 °C. A uniquely designed support structure and filling material provides excellent balance between the hysteresis effect, mechanical shock and thermal shock performance.
It has long been a challenge for temperature calibration labs across the world to measure gradient of a dry block. With a 6 mm sensing element, AM1758 meets challenge and requirement such as one from The Euramet Calibration Guide CG-13 Version 3.0 “CALIBRATION OF TEMPERATURE BLOCK CALIBRATORS”
Features
- Vertical gradient measurement of dry block/dry well
- 6 mm sensing element
- Temperature range: -200 °C to 670 °C
- Short term stability: ±0.003 °C at 0.01°C
Specifications
|
Temperature Range
|
From -200 °C to 670 °C
|
|
Resistance at 0 °C
|
Nominal 25 Ω
|
|
Temperature Coefficient
|
0.003925 Ω/ Ω/°C
|
|
Short Term Stability (1)
|
±0.003 °C at -196 °C
±0.003 °C at 0.01 °C
±0.004 °C at 232 °C
±0.005 °C at 420 °C
±0.006 °C at 661 °C
|
|
Hysteresis
|
<=0.005 °C
|
|
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
|
1 mA
|
|
Sensor Length
|
6 mm
|
|
Sensor Location
|
3 mm from tip
|
|
Insulation Resistance
|
>1000 MΩ at room temperature
|
|
Sheath Material
|
Inconeltm
|
|
Dimension
|
0.25 inch X 12 inch (6.35 mm X 305 mm)
|
|
External Leads
|
Teflontm –insulated copper wire, 4 leads, 2.5 meters
|
|
Handle Dimension
|
15 mm (OD) X 65 mm (L)
|
|
Handle Temperature Range (2)
|
-50 °C to 180 °C
|
|
Optional Calibration
|
NIST traceable calibration and data available per request: Ordering # 5007
|
(1) Maximum variation from PRT during gradient measurements up to 4 hours in the same heat source.
(2) Handle temperature outside this range will cause damage to the probe.
Optional Accessories
|
Model |
Description |
|
9001 |
Wooden Carrying Case included |
Knowledge and Information