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Classification: 27274801 [AHE002003]
| Preferred name | 27-27-48-01 Thermal flow sensor |
|---|---|
| Definition | Thermal flow sensors (also known as calorimetric flow sensors) use the specific ability of a liquid or gaseous medium to transport a quantity of heat. Since the mass of the passing medium is essential for the removal of the heat quantity provided by a heating element, thermal sensors are also known as mass flow sensors. If the medium is known, the heat quantity transport depends only on the flow velocity, which is usually measured using the heat loss method or the heat transfer method. In the heat loss method, the temperature difference between a heater and a temperature sensor, both of which are usually designed as electrical resistors, is kept constant by the electrical regulation in a bridge circuit. The electrical power required to adjust the bridge to a constant temperature difference between the heater and the temperature sensor is a measure of the amount of heat lost by a flowing fluid and is therefore directly related to the flow velocity |
| Keywords | Flow counter Flow rate counter Flow rate switch Flow rate transmitter Flow switch Flow transmitter |
| IRDI | 0173-1#01-AHE002#003 |
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BASIC Properties: Thermal flow sensor
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Valuelist suitable for liquids
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Nominal operating pressure (PN)
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Valuelist Interface design
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Valuelist switching output present
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max. temperature of liquid medium
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Valuelist type of adjustment
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Valuelist approval according to ATEX II / dust present
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width
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end value of the measuring range (flow rate)
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Valuelist suitable for cable guide chain
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min. rated control voltage Us with DC
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Valuelist explosion proof
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Rated operating voltage Ue with AC
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number of analogue outputs
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max. medium temperature
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MTTF
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type of process connection
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Pressure resistance of measuring head
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initial value of the measuring range (flow rate)
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min. operating voltage with AC 50 Hz
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Valuelist Explosion protection categories for gases
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Valuelist switching element function
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Valuelist certificate/approval
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max. ambient temperature
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Valuelist Conductor connection method
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lowest value for adjustable response value for flow in connection with liquids
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max. operating voltage with AC 50 Hz
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Valuelist approval according to cULus present
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min. operating voltage with AC 60 Hz
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Valuelist Physical measurement principle of the sensor
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Valuelist type of protocol
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Valuelist suitable for gases
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Valuelist Design of the process connection
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Valuelist temperature class for explosion-protected electrical devices
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min. temperature of liquid medium
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min. rated control voltage Us with AC 50 Hz
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max. electricity consumption
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height
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number of switch outputs
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Valuelist protection class
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Valuelist material in contact with the medium
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Valuelist material of housing
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Valuelist Flow direction
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flow rate
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max. cable length
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max. ambient temperature for evaluating electronics
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Valuelist Material of the cable mantle
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Valuelist Reverse polarity protection present
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Valuelist flow monitoring of the medium present
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min. rated control voltage Us with AC 60 Hz
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min. operating voltage with DC
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Valuelist Labs-conformity to VDMA 24364
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Valuelist nominal size
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min. ambient temperature
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max. operating voltage with AC 60 Hz
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max. operating pressure
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Valuelist type of indication
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Valuelist product function at IO-Link
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Valuelist operating medium
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Rated operating voltage Ue with DC
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Valuelist IO-Link port type
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Valuelist short-circuit strength available
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Valuelist cross-circuit detection available
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nominal temperature
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Valuelist overload resistance available
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Valuelist signal conversion
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Valuelist IO-Link device profile
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IO-Link Process Data Output Length
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IO-Link Process Data Input Length
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Valuelist IO-Link Revisions-ID
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IO-Link Min Cycle Time
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rise time
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Valuelist IO-Link transmission rate
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internal inductance
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Valuelist Switch function
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min. response time
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Valuelist material sealing
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Valuelist connection type
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Valuelist Coding
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Valuelist thread size connector
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address of additional link
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Valuelist type of connector
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Valuelist Design of electrical connection
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Valuelist approval according to IECEx present
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Valuelist Size of connection thread
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Valuelist style of communication interface
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overload pressure
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Valuelist RoHs conformity
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Valuelist Operating resource protection class
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max. temperature of gaseous medium
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lowest value for adjustable response value for flow in connection with gases
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Valuelist Explosion protected category for dusts
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fluid temperature
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min. temperature of gaseous medium
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depth
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type of approval
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Measured values
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min. operational pressure
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internal capacitance
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max. storage temperature
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min. medium temperature
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Application standards
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min. storage temperature
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min. ambient temperature for evaluating electronics
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diameter
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burst pressure
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Cable length
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Valuelist measurement principle
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greatest value for adjustable response value for flow in connection with gases
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Valuelist wire-break or measuring shunt circuit monitor present
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Valuelist adjustability of trip point
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Greatest value for adjustable response value for flow in connection with liquids
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Valuelist degree of protection
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Valuelist approval according to ATEX II / gas present
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Valuelist Operating element present
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Valuelist temperature monitoring of the medium present
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max. response time
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Valuelist analog output
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Special characteristics
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max. operating voltage with DC
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insertion length
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Number of poles
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Supplier product family
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Supplier product description
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Supplier product root
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product article number of supplier
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Supplier product order suffix
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Supplier product type
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Valuelist analog output voltage
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Valuelist output can be inverted
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product article number of manufacturer
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Manufacturer name
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GTIN
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Manufacturer product root
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Manufacturer product family
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Manufacturer product description
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Manufacturer product order suffix
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Manufacturer product designation
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Valuelist measurement method for pressure flow
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min. core cross section
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max. core cross section
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length
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Valuelist suitable for the production of LiLo batteries
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Brand
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Product type
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Open circuit current
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GLN of manufacturer
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compliance to standard(s) or specification
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Valuelist Type of customs tariff number
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Valuelist Use of customs tariff number
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HS-Code of the WCO
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Customs tariff number
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Min. output current
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Valuelist Warning field output present
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Valuelist Design of control output
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Valuelist Design of output signal switching device
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Max. output current at secured output
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Max. output current
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Supplier product designation
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name of supplier
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GLN of supplier