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Nutech
Engineers
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Temperature Sensing Devices |
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Nutech
Engineers
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Temperature Sensing Devices |
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| Home Page | Site Map | Section 1 | Section 2 | Section 3 | Section 4 |
| Contact Details | Section 5 | Section 6 | Section 7 | Enquiry | |
SECTION - 5
Copper & Platinum RTD Assemblies
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The RTD Sensor is either a platinum or copper wire wound element which changes resistance proportional to temperature change. the resistance change per degree of temperature change is nearly linear throughout the temperature range of the sensors, providing a very accurate reading. The 3 wire sensor is the most common in industry and almost totally compensates for the lead wire length. Four wire sensors are used to eliminate all effects of lead wire resistance in metrology applications. Reliability ± Less than 0.01 °C or Better Stability Drift is less than± at 0 C after one year normal service within rated temperatures. Time Constant 5 seconds in water at 3 feet /second Self-Heating 28 mW/ °F in water at 3 feet /second Vibration Assembly construction withstands 50 Hz to 2000 Hz at 20 G's minimum per MIL-STD-202C, Method 204A, Test Condition D. Shock Element construction withstands minimum 100 G's since wave shock of 8 millisecond duration, three blows applied to each axis. |
Intermediate Temperature 260°C Temperature Range -100°C to 260°C Insulation Resistance 100 M.Ohms minimum at 100 Vdc Leads to case at room temperature. Leads AWG #22, stranded nickel plated copper wire. Teflon insulated High Temperature 500C Temperature Range -100°C to 500°C Insulation Resistance 10 meg ohms minimum at 100 Vdc Leads to case at room temperature Leads AWG #22, stranded nickel plated copper wire. Fiberglass insulated. |
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PROTECTION TUBE MATERIALS 304 Stainless Steel : Good oxidation and corrosion resistance in a wide range of industrial environments. Subject to carbide precipitation, which can reduce corrosion resistance in the 427°C-537°C range. Good mechanical properties from -185°C to 788°C. Regarded as the standard protection tube material. 316 Stainless Steel same areas of application as 304 Stainless Steel. Improved resistance to mild acid and pitting corrosion. Inconel Superior resistance to sulfur and reducing conditions. |
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Double Ended Fixed or Spring
loaded Bushing
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Weather Proof Head
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Ceramic Disk
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Element Assembly
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Remote Mounted Head Flexible
Water Proof Leads
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| PROCESS MOUNTING | |
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| Cold End Terminations | ||
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| Varidepth RTD Assemblies | |
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Locking Cap Freely Adjustable Over Flexible Tube Probe Forced Against Bottom of Adapter Well to Give Best Heat Transfer |
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