Industries
Industries
- General Industrial
- Aerospace
- Brick & Ceramics
- Chemical & Petrochemical
- Pharmaceutical, Food, Dairy, & Beverage
- Engineering & Architecture (EPC Firms) & Major Equipment OEMs
- Glass
- Incineration
- Metals Manufacturing & Heat Treating
- OEM & Equipment Builders
- Oil & Gas - Downstream & Refining
- Oil & Gas Upstream and Midstream
- Plastics & Fiber / Textiles Industries
- Power
- Pulp & Paper
- Rubber, Cement, & Aggregate
- Semiconductor
- Test & Measurement
Averaging RTDs
Continuous averaging resistance temperature detectors are most frequently used in air washing and air handling systems where turbulent and stratified air flow may effect the temperature measurement in a tip sensitive probe. The average temperature of the air in the duct can be measured with this type of sensor.
Any application which requires an averaging of temperature across an area would be suited for this sensor type. The operating temperature range for a continuous averaging RTD is from -148 to 382°F (-100 to 195°C). Lower temperatures and temperatures up to 900°F (482°C) are handled with a multipoint design (4, 8, or 16 points).
| Organization | Standard | Alpha | Nominal Resistance(ohms) At 0°C |
|---|---|---|---|
| International Electrotechnical Commission (Supersedes BS & DIN) |
IEC 60751: 2022 | 0.00385 |
100 |
| ASTM International | ASTM E1137/E1137M-08 (2020) | 0.00385 | 100 |
| American Scientific Apparatus Makers Association (SAMA) |
RC21-4-1966 | 0.003923 | 98.129 |
| British Standards Association |
b.S. 1904-1964 | 0.00385 | 100 |
| Normenstelle Elektrotechnik |
DIN 43760 | 0.00385 | 100 |
| US Department of Defense |
MIL-T-24388 | 0.00392 | 100 |
Tolerance Classes for Wound Resistors
| Tolerance Class | Tolerance Value (°C) | Temperature Range of Validity of Tolerances |
|---|---|---|
| W 0.1 | ±(0.1° + 0.0017[t]) | -50° to 250° |
| W 0.15 | ±(0.15° + 0.002[t]) | -100° to 450° |
| W 0.3 | ±(0.3° + 0.005[t]) | -196° to 661° |
| W 0.6 | ±(0.6° + 0.01[t]) | -196° to 661° |
Tolerance Classes for Film Resistors
| Tolerance Class | Tolerance Value (°C) | Temperature Range of Validity of Tolerances |
|---|---|---|
| F 0.1 | ±(0.1° + 0.0017[t]) | -50° to 250° |
| F 0.15 | ±(0.15° + 0.002[t]) | -50° to 450° |
| F 0.3 | ±(0.3° + 0.005[t]) | -50° to 661° |
| F 0.6 | ±(0.6° + 0.01[t]) | -50° to 661° |
Tolerance Classes for Thermometers (Finished Probes)
| Tolerance Class | Tolerance Value (°C) | Temperature Range of Validity of Tolerances |
|---|---|---|
| AA | ±(0.1° + 0.0017[t]) | -50° to 250° |
| A | ±(0.13° + 0.0017[t]) | -100° to 450° |
| B | ±(0.25° + 0.0042[t]) | -196° to 600° |
| C | ±(0.6° + 0.01[t]) | -196° to 600° |
Resources
JMS Southeast, Inc.