FEATURES

  • Selectable Working Range: 0 ... 2000 / 3000 / 4000 ft/min
  • Output Signal: 4... 20 mA or 0...10 VDC
  • Supply Voltage: 24 VAC/DC
  • Low Angular Dependence

 


GENERAL DESCRIPTION


KAH air velocity transmitters are ideal for applications requiring accurate ventilation control. They operate on an innovative hot film anemometer principle. This thin film sensor guarantees accuracy at low air velocity, which is not possible for conventional anemometers with commercial temperature sensors or NTC bead thermistors. The sensor is also much more insensitive to dust and dirt than all other anemometer principles. The KAH delivers high reliability and low maintenance costs. The configuration equipment allows air velocity adjustment of the sensor. The measuring range and the response time can be selected with jumpers by the user. This facilitates easy adjustment to the correct working range on start-up. Using the mounting device, the penetration depth is infinitely adjustable. 

Note: The sensor is to be mounted so that the direction of air-flow is parallel to the sensor duct.

Applications

  • HVAC Applications
  • Process and Environmental Control

Advantages

  • Adjustable Damping Time
  • Short Reaction Time
  • Adjustable Probe Insertion Length
  • Low Angular Dependence
  • Easy Installation
  • Adjustable to Application Requirements

 Technical Details

Measuring ValuesWorking Range1):

0 ... 2000 ft/min

0 ... 3000 ft/min

0 ... 4000 ft/min

Output Signal1):
4 - 20 mA RL < 450 Ω
0 ... 10 V (-1mA < IL < 1mA)
Accuracy at 68 °F, 45 % rH, 0 psig: 40 ... 2000 ft/min
± (40 ft/min + 3 % of reading) 40 ... 3000 ft/min
± (40 ft/min + 3 % of reading) 40 ... 4000 ft/min
± (40 ft/min + 3 % of reading)

Response Time 1)2)90: 4 seconds (0.7 seconds at constant temperature)

Probe Length: 7.87"

Process Connection: Clamp for duct mounting

Power Supply: 24 VAC/DC ± 20 %

Current Consumption

for AC Supply: Max. 150 mA

for DC Supply: Max. 90 mA

Angular Dependence: < 3 % of reading at | Δ | < 10°

Wire Termination: Screw terminals up to AWG 16 (1.5 mm²)

Cable Gland: M16 x 1.5

Electromagnetic Compatibility: EN 61326-1 EN 61326-2-3

Housing Material: Polycarbonate, UL94HB approved

Protection: IP 65

Temperature Range Working Temp. Probe: -13 ...122 °F

Working Temp. Electronic: -14...122 °F

Storage Temp: -22 ...140 °F

Working Range Humidity: 5 ... 95 % rH (non-condensing)

 

Dimensions