Yodify Product Library
Instantly add the DVK Calorimetric Flowmeter/Monitor/Totaliser and 50,000+ more product series to your store or catalog
Book Your Demo and See How
or create your store
DVK Calorimetric Flowmeter/Monitor/Totaliser
Brand: KOBOLD Instruments, IncThe digital KOBOLD flow meter/monitor Model DVK serves to measure and monitor small and average flows of air in piping and hoses. The device is absolutely maintenance-free and uses the calorimetric method.
When the operating voltage is applied, a thermistor integrated in the sensor is heated to a defined value above the medium temperature. When air (or gas) flows through the sensor, the heat generated in the sensor is absorbed by the medium.
This means that the sensor is cooled down to the medium temperature. Depending on the velocity and rate of flow, the temperatures are equalized and the resistance of the sensor is reduced proportionally.
The flow velocity can be determined by measuring the resistance. The medium temperature is measured by a second sensor.
The resistance values of both sensors are compared by the electronics over a Wheatstone bridge circuit and an output relay is actuated if the set switching values has not been made or exceeded.
The switch state is signaled by two LEDs (ON: LED on; OUT 1*: green, OUT 2*: red). The digital KOBOLD flow meter type DVK works with practically no pressure loss.
Typically, the device is available in two different versions (display and sensor as compact instrument, or display and sensor separated but connected with a cable) with the necessary screw connections.
1 - 12 of 38 Part Numbers
DVK-12 01R08
- Model - Flowmeter Compact Version
- Measuring Range / Connection - 1-10 L/min to Air, G 1/4"
DVK-12 01R08 3PP
- Model - Flowmeter Compact Version
- Measuring Range / Connection - 1-10 L/min to Air, G 1/4"
- Output - 2 x PNP Switch Output
DVK-12 05R08
- Model - Flowmeter Compact Version
- Measuring Range / Connection - 5-50 L/Min to Air, G 1/4"
DVK-12 05R08 3PP
- Model - Flowmeter Compact Version
- Measuring Range / Connection - 5-50 L/Min to Air, G 1/4"
- Output - 2 x PNP Switch Output
DVK-12 10R10
- Model - Flowmeter Compact Version
- Measuring Range / Connection - 10-100 L/min to Air, G 3/8"
DVK-12 10R10 3PP
- Model - Flowmeter Compact Version
- Measuring Range / Connection - 10-100 L/min to Air, G 3/8"
- Output - 2 x PNP Switch Output
DVK-12 20R10
- Model - Flowmeter Compact Version
- Measuring Range / Connection - 20-200 L/min to Air, G 3/8"
DVK-12 20R10 3PP
- Model - Flowmeter Compact Version
- Measuring Range / Connection - 20-200 L/min to Air, G 3/8"
- Output - 2 x PNP Switch Output
DVK-12 50R15
- Model - Flowmeter Compact Version
- Measuring Range / Connection - 50-500 L/min to Air, G1/2"
DVK-12 50R15 3PP
- Model - Flowmeter Compact Version
- Measuring Range / Connection - 50-500 L/min to Air, G1/2"
- Output - 2 x PNP Switch Output
DVK-12 70R25
- Model - Flowmeter Compact Version
- Measuring Range / Connection - 150-3,000 L/min to Air, G 1"
DVK-12 70R25 3P4
- Model - Flowmeter Compact Version
- Measuring Range / Connection - 150-3,000 L/min to Air, G 1"
- Output - 1 x PNP Switch Output & 4-20 mA Analog Output
1 - 12 of 38 Part Numbers
Specifications
Brand
Accuracy
- ± 5 % of Full Scale
Applications
- Flow Monitoring of Air & Gases
- In Air Conditioning Systems
- In Extraction Systems
BSP Connection
- G 1”
- G 1/2”
- G 1/4”
- G 1-1/2”
- G 2”
- G 3/8”
Connection Material
- Aluminum Die Casting
Display
- 3-Digit 7-Segment LCD Display
Electrical Connectors
- M12 x 1 with 2 metres Cable
Enclosure, Body Material
- FeNi
- Lead Glass
- OFC
- PBT
- PPS
- PTLR
Environmental Protection
- IP65
Flow Rate
- 1 to 12,000 L/minute - to Air
Gasket Material
- NBR
Hysteresis
- Adjustable
Indication
- 2 x LED - Switching Indication
Materials of Construction
- 316 Stainless Steel - Sieve Material
Mounting Position
- Any Orientation
Operating Pressure
- psi: -7.252 to 217.6 (kPa: -50 to 1,500, bar: -0.5 to 15)
Operating Temperature
- 0° to 50° C (32° to 122° F)
Output
- 4-20 mA
- 80 mA
- Load - Max.
Power Requirement
- Maximum
Repeatability
- ± 1 % of Full Scale for DVK- to 01 / DVK- to 05
- ± 2 % of Full Scale for Other Typicals
Response Time
- 1 second
Sensor / Probe Material
- FeNi
- Lead Glass
- OFC
- PBT
- PPS
- PTLR
Supply Voltage
- 12-24 Vdc
Switch Type
- 2 x PNP, Open Collector
Temperature Range
- 0° to 50° C (32° to 120° F)
Vibration
- 10 to 500 Hz