The COSA Xentaur HTF Intrinsically Safe Replacement Sensor is approved for use in Class I Division II hazardous environments. The model XDT of the Xentaur Hyper-Thin-Film (HTF) AL2O3 Moisture Sensor Technology utilizes a Xentaur HTF Aluminum Oxide sensor. The ground-breaking HTF sensor technology improves thin-film and metal oxide sciences and significantly outperforms all previous aluminum oxide sensors in terms of performance. The HTF aluminum oxide sensors operate on the idea that a hygroscopic layer of aluminum oxide adsorbs or releases water molecules inside its pores in response to the surrounding water vapor pressure. The aluminum oxide layer’s electrical capacitance varies in response to the surrounding water vapor pressure.
The electrical capacitance is measured between the sensor’s aluminum core and an external porous conductive gold coating. The advantages of the HTF sensor technology are due to the patented manufacturing process used to make the aluminum oxide layer exceedingly thin and hygroscopic. As a consequence, a highly sensitive sensor with a rapid reaction is created.
Features:
- Class I Division II
- Better repeatability
- Longer sensor life
- Less drift
- Faster response
- Negligible temperature coefficient
- Sensors are freely interchangeable
- Up to 600x more sensitive than conventional sensors
- Field calibration with NIST traceable reference standards
Specifications:
| SENSOR ELEMENT: | |
| Type: | Hyper Thin Film high capacitance AL2O3 |
| Dewpoint range: | |
| XTR-65 | -65°C to +20°C (-85°F to +68°F) |
| XTR-100 | -100C to +20C(-1458°F to +68°F) |
| Capacitance: | 15 nF to 200 nF |
| Accuracy: | ± 2°C (±3.6°F) for -110° to 0° Dewpoint |
| ± 3°C (±5.5°F) for - 0° to +20° Dewpoint | |
| Repeatability: | ±0.5°C (±0.9°F) |
| Response time*: | For a step change from -40°C to -60°C: |
| 63% in 90 seconds | |
| 90% in 450 seconds | |
| Temperature range:. | -30°C to +70°C (-22°F to 150°F) |
| Sample Flow range | |
| (linear velocity at 1 atm):. | Static to 100 m/s |
| Storage temperature: | -40°C to 50°C (-40°F to +120°F) |
| SpanCheck: | Sensor saturates at dewpoint |
| above +20°C (+68°F) | |
| FITTING: | |
| Pressure operating range: | Standard: 34 bar (500 psi) |
| Optional: 340 bar (5000 psi) | |
| Mechanical connections: | 14mm x 1.25 mm threads, and |
| 3/4”-16 threads (other threads available) | |
| Electrical connections: | Female BNC connector |
| Sensor cable: | Coaxial cable (75Ω with maximum |
| capacitance of 50 pF/m). | |
| Maximum cable length: 914 m (3000 ft) | |
| * These response times are not directly comparable to | |
| competitors data because of differences in measurement | |
| methodology and data presentation. Please inquire for | |
| detailed comparisons between Xentaur and other major | |
| sensor manufacturers. Our sensors are significantly faster. |
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