Airflow sensors

Whether in commercial or industrial halls and buildings, or in residential buildings: the right exhaust and supply air is what counts. Because only when polluted air is extracted and simultaneously replaced by fresh air is an optimum climate created for living or working.

Our solutions in the field of air flow technology include air flow sensors and linear air flow sensors. The new INT511 air flow sensor is characterized by the high resistance of the sensor tip to dirt and cleaning agents as well as the direction-independent installation, making it particularly user-friendly.

Air flow sensor INT511

The KRIWAN INT511 airflow sensor supervises the speed of airflows according to the calorimetric measuring principle. The sensor operates in a temperature-compensated manner. The switching point can be set within the monitoring range
be set/selected by the built-in potentiometer.

Air flow sensor INT510

The KRIWAN air flow sensor INT510 monitors the flow velocity of air in the medium temperature range of -5...+60°C with the calorimetric measuring principle. The air flow sensor is temperature compensated.

Linear air flow sensor INT512

The KRIWAN linear air flow sensor INT512 detects the airflow velocity and outputs an analogue, temperature compensated and linear DC 0...10V signal for further processing.

Advantages of KRIWAN airflow sensors

No compromise on quality

The KRIWAN air flow laboratory

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INT511 air flow sensor

The new generation of the INT511 air flow sensor represents a consistent further development of the predecessor model and completes the product portfolio of KRIWAN Industrie-Elektronik in the field of air flow sensors. The high demands that KRIWAN places on its products have resulted in an outstanding airflow sensor. This impresses above all with its high resistance to environmental conditions. In addition, the INT511 can be used flexibly. Both a direction-independent installation and an individual setting of the start-up bridging and the switch-off value are possible.

Application

The new KRIWAN air flow sensor is used for air flow monitoring in building services, e.g. for monitoring:

  • Filter
  • Fans
  • Supply / exhaust air
  • Electric air heaters
  • Fume hoods of commercial kitchens
  • Control dampers

Advantages

High resistance to environmental conditions

  • Ambient temperature: -20...+60°C
  • Up to 95% relative humidity
  • Flow velocities up to 35 m/s
  • High resistance to dust and water (IP65)
  • Resistance e. g. to hydrogen peroxide

Flexible use

  • Direction independent measurement
  • Adjustable installation depth
  • Adjustable limit value within the monitoring range of 0.2-10m/s (potentiometer)
  • Adjustable start-up delay from 1-3min (potentiometer)

Easy installation

  • Installation independent of direction
  • Push-In Spring Clamps

Stand-alone Solution

  • No additional evaluation electronics are required
  • All-In One

Viewing the status of the INT511 via Duo LED

  • Display of the operating status
  • Enables quick and easy error analysis

 

Technical features

Designation INT511 Air flow sensor INT511 Air flow sensor
Article number 20N842S021 22N842S021
Supply voltage AC/DC 50/60 Hz 24 V ±10 % 2 VA AC 50/60 Hz 115-230 V ±10 % 3 VA
Adjustable limit value in the monitoring range (VL) 0,2-10m/s
Restart delay 2min

Switching hysteresis

0,2 m/s - 0,9 m/s

1,0 m/s-10m/s

 

± 0,1 m/s

± 0,3 m/s

Strength For flow velocities up to 35 m/s
Protection class IP65
Mounting position Independent of the flow direction

INT512 linear air flow sensor

The KRIWAN INT512 linear air flow sensor measures airflow velocities using the calorimetric measuring principle, it works temperature compensated. The linear output signal is proportional to the air flow and can be used on site for air flow regulation in controllers, in building services or for display.

Application

The KRIWAN INT512 linear air flow sensor operates according to the calorimetric measuring principle and detects airflow velocities of 0.2...1m/s or 0.2...10m/s. The output is an analogue voltage of DC 0...10V, referred to L-, is available at the output. This linear signal is suitable for further processing in limit value switching relays, controllers, display instruments and in DDC/ZLT systems.

Technical features

Designation INT512 linear air flow sensor INT512 linear air flow sensor INT512 linear air flow sensor INT512 linear air flow sensor
Article number 13N137S40 13N138S40 13N139 13N140
Coverage 0,2...1m/s 0,2...10m/s 0,2-1m/s 0,2-10m/s
Supply voltage DC 24V ±20% DC 24V ±20% max. 50mA
Output voltage DC 0...10V, limited to 10,5V DC 4-20mA, limited to 20,7mA
Accuracy (ϑU 5...45°C and 1013hPa)
- for detection range 0,2...1m/s
- for detection range 0.2...10m/s
±(0,03m/s +5% from MW)
±(0,3m/s +5% from MW)
Strength For airflow velocities of max. 35m/s
Mounting position of the probe Arrow in flow direction
Protection class IP20

Air flow sensor INT510

The KRIWAN air flow sensor INT510 monitors the flow velocity of air in the medium temperature range of -5...+60°C using the calorimetric measuring principle. The air flow sensor is temperature compensated.

Application

The KRIWAN INT510 air flow sensor monitors airflow velocities in the range 0.2...1 or 0.2...10m/s according to the calorimetric principle. An equivalent analogue voltage of DC 0...10V, referenced to L-, is available at the output. This signal is suitable for further processing in limit value switching relays, controllers, display instruments and DDC/ZLT analogues, etc.

Technical features

Designation INT510 air flow sensor INT510 air flow sensor
Article number 13N135S40

13N136S40

Monitoring area 0,2...1m/s 0,2...10m/s
Supply voltage DC 24V ±20%
Output voltage DC 0...10V, limited to 10,5V
Minimum load resistance 10kΩ
Accuracy (ϑU 5...45°C and 1013hPa)
- for detection range 0,2...1m/s
- for detection range 0.2...10m/s

 

±(0,03m/s +5% from MW)
±(0,3m/s +5% from MW)

Max. perm. air velocity 35m/s
Mounting position of the probe Arrow in flow direction
Protection class IP20

INT530 air flow monitor for INT510 air flow sensor

The air flow monitor continuously checks the air flow in conjunction with the INT510 air flow sensor. If the limit value is exceeded, the built-in relay drops out. There is an acoustic fault signal via the built-in, acknowledgeable signal transmitter and a visual fault signal via the display.

Application

The INT530 is used as a convenient air flow monitor for monitoring air flows, e.g. in damper actuators in hospital ventilation systems or in clean room systems. The monitoring is carried out to an adjustable upper and lower limit value, thus applications in cytostatics plants are also possible. For connection to the building control system, either the current or voltage output with standard signal and an optionally available LON interface are available.

Advantages

  • Upper and lower limit values
  • Separate day and night set points
  • Start-up override
  • Alarm delay
  • Digital display of airflow velocity in m/s
  • Acoustic signal generator can be deactivated
  • Filter factor adjustable
  • Working or quiescent current principle
  • Simple 2-button operation
  • Password protection possible
  • Error diagnosis
  • Sensor calibration

Technical features

Designation INT530 Air flow monitor for air flow sensor INT510
Article number 20N340
Supply voltage AC/DC 50/60Hz 24V ±10 % 3VA
Adjustable limit value in the monitoring range (optional)

0,20...1,00m/s

0,2...10,0m/s

Analog input 0...10V

- Input resistance

- accuracy

 

ca. 150kΩ

± 1% from final value

Analog output (linear)

 

- Accuracy

0/4...20mA, Load ≤500 Ω, active

0...10V, R≥ 10kΩ, active

± 1,5% from final value

Protection class

Front: IP65

Housing: IP20

 

Application Sheet

Air flow monitoring for exhaust air systems

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Application Sheet

Air flow monitoring for supply air systems

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Application Sheet

Air flow monitoring for medicine and pharmacy

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You have further questions? Our experts will be pleased to advise you!