This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.
DESCRIPTION
The fundamental problem with surface temperature measurement is that it is subject to large stem conduction errors, also because heat conducted from the surface of the hot-plate causes a localised cold spot to be created which means that the temperature indicated by the hot plate is not necessarily the temperature at the point of measurement.
An ideal system would not disturb the heat-flux from the hot-plate.
During 1993 such a system was described (ref. “Progress in Contact Thermometry” 1993 B. D. Foulis) and Isotech have the inventor’s permission to make and market the device World-wide.
Principal of Operation
A fine wire type N thermocouple is used as the surface temperature sensor, a second junction 2 to 3mm along the thermocouple, senses the temperature difference due to heat flux along the sensor.
A heater heats the thermocouple stem until the temperature gradient is zero, thus creating a measurement without stem conduction, or disturbance of the hot-plate’s surface.
The 944 can be used with the Isotech Small Hot Plate model 983. A traceable calibration certificate is available to order.
SPECIFICATION
| Technical Feature | Value |
|---|---|
| Model | 944 True Surface Temperature Measurement System |
| Temperature Range | 30°C to 350°C |
| Resolution of Display | 0.1°C or 0.1°F |
| Stability | ±0.1°C |
| Accuracy | ±2°C with TRACEABLE Certification ±5°C without Certification |
| Probe Assembly | Probe Diameter – 7.5mm Probe Length – 150mm Lead Length – 850mm |
| Power Supply | 100V – 120V, 50/60Hz or 200V – 240V, 50/60Hz |
| Dimensions | Height 90mm Width 153mm Depth 265mm (excluding plugs) |
| Weight | 4kg |
| How to order | Model 944 & Probe 935-14-81 Please state supply voltage required. Please state if Calibration is required. |
DOWNLOADS
Model 944
30°C to 350°C
The fundamental problem with surface temperature measurement is that it is subject to large stem conduction errors, also because heat conducted from the surface of the hot-plate causes a localised cold spot to be created which means that the temperature indicated by the hot plate is not necessarily the temperature at the point of measurement.
- Indicates True Surface Temperature
- 30°C to 350°C
- Resolution 0.1°C
We are online and ready to chat to you if you need any advice and support, or if you prefer you can fill out the form below.
Or call +44 01704 543830
Related products
-
Read moreMedusa 511
Covering 50°C to 700°C, 45 x 285mm Volume
Isotech has a wide range of Dry Blocks to suit probes requiring deeper immersion. This dry block temperature calibrator features large and deep calibration volumes. As such, it is less portable than earlier Dry Blocks, but has a higher capacity and retains outstanding temperature uniformity.
-
Read morePegasus 4853
150 °C to 1200°C Portable Calibration Furnace
The Pegasus range offers extreme high temperature calibration in an easy to use portable package - ideal for the calibration of high temperature thermocouples.
-
Read moreGemini 4857
High Capacity Blocks to 700°C
The Gemini range of Dry Blocks have high capacity allowing a large number of probes to be calibrated together.
-
Read moreTTI-10 High Accuracy Handheld Thermometer
-200°C to 850°C
TTI-10 brings laboratory level performance of up to 10mK (0.01°C) and resolution up to 0.001°C in a portable handheld instrument.
