• State-of-the-art design provides reliable operation.
• Not position sensitive.
• Direct Acting (DA) and Reverse Acting (RA) models are available.
• Insensitive to static pressure changes.
• Accurate control throughout entire velocity range.
• Graduated scales for minimum and maximum velocity adjustments.
• Velocity reset by thermostat demand.
• Adaptable to many terminal unit control strategies.Velocitrol Velocity Sensor/Controller; B Type| Application | Velocitrol Air Velocity Sensor |
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| Reset Pressure Range (psi) | 1 to 15 psi |
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| Overview | An ultra-sensitive air velocity sensor and pneumatic controller, control pneumatic damper actuators in heating and air conditioning systems to provide constant air velocity in the duct regardless of the static pressure. |
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| Reset Pressure Range (kPa) | 7 to 103 kPa |
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| Control Range (fpm) | 500 fpm up to 3500 fpm by changing orifice |
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| Control Range (m/s) | 2.5 m/s up to 17.8 m/s by changing orifice |
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| Nominal Mainline Air Pressure (psi) | 20 psi |
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| Mainline Air Pressure (min.) (kPa) | 124 kPa |
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| Nominal Mainline Air Pressure (kPa) | 138 kPa |
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| Mainline Air Pressure (min) (psi) | 18 psi |
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| Maximum Safe Operating Pressure (psi) | 30 psi |
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| Airflow Usage | 0.029 scfm (13.7 mL/s), includes supply for bleed type thermostats for type B, does not include thermostat air for type C controller |
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| Maximum Safe Operating Pressure (kPa) | 207 kPa |
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| Comments | For normally open damper and one-pipe thermostat |
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| Operating Humidity Range (% RH) | 5 to 95% RH |
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| Temperature Range (F) | 40 F to 130 F |
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| Temperature Range (C) | 5 C to 55 C |
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| Dimensions (in.) | Controller: 1 3/4 in. high x 3 1/4 in. wide x 2 3/8 in. deep / Sensor: 3 3/16 in. high x 1 3/4 in. wide x 4 3/16 in. long with orifice and 3 3/8 in. long without orifice |
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| Dimensions (mm) | Controller: 44 mm high x 83 mm wide x 60 mm deep / Sensor: 81 mm high x 45 mm wide x 107 mm long with orifice and 86 mm long without orifice. |
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