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Specification
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Details
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General
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Measured values
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Mass flow, Density, Temperature
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Units of measurement
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Adjustable
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Performance
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Max. measurement error
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FLT-M1_i1
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- Mass flow
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±0.10% FM
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- Zero-point stability of mass flow
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±0.0007 kg/h
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- Max. deviation of mass flow
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±0.10% or ± 0.0007 kg/h
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- Density
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±5 kg/m³
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- Temperature
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±1.0 K
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- Repeatability
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FLT-M1_i1
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- Mass flow
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±0.05% FM
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- Zero-point stability of mass flow
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±0.00035 kg/h
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- Max. deviation of mass flow
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±0.05% or ± 0.00035 kg/h
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- Density
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±2.5 kg/m³
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- Temperature
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±0.5 K
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Max. measurement error
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FLT-M1_i2
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- Mass flow
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±0.10% FM
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- Zero-point stability of mass flow
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±0.0057 kg/h
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- Max. deviation of mass flow
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±0.10% or ± 0.0057 kg/h
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- Density
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±5 kg/m³
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- Temperature
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±1.0 K
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- Repeatability
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FLT-M1_i2
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- Mass flow
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±0.05% FM
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- Zero-point stability of mass flow
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±0.00285 kg/h
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- Max. deviation of mass flow
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±0.05% or ± 0.00285 kg/h
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- Density
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±2.5 kg/m³
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- Temperature
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±0.5 K
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Temperature conditions
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Permissible medium temperature
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-10…+70 °C
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Permissible ambient temperature
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-10…+80 °C
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Permissible storage temperature
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-20…+85 °C
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Range of application
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FLT-M1_i1
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FLT-M1_i2
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Recommended flow measuring range
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0…30 kg/h
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0…120 kg/h
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- Pressure loss as a function of flow rate
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Max. 100 bar (rel.)
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Max. 100 bar (rel.)
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Inlet and outlet sections
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No influence on measuring accuracy
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No influence on measuring accuracy
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Ambient conditions
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Climate class
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Not specified
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Electromagnetic compatibility
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Prepared for EMC 2014/30/EU (EN 61326-1)
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Vibration and shock resistance
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Prepared for standards:
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- IEC/EN 60068-2-6
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- IEC/EN 60068-2-27
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- IEC/EN 60068-2-31
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- IEC/EN 60068-2-64
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Degree of protection
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Housing is hermetically sealed, IP protection only when installed.
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Dimensions
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FLT-M1_i1
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FLT-M1_i2
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- Size
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100 x 30 x 104 mm³
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135 x 36.5 x 145 mm³
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Weight
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850 g
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2150 g
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Inner diameter of measuring tube
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1.1 mm
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2.5 mm
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Materials
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Housing
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Stainless steel, 1.4301 (304L)
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Wetted parts
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Stainless steel, 1.4404/1.4435 (316L)
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Option wetted parts for FLT-M1_i1
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Alloy C22, 2.4602
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Fluidic interfaces
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Manufacturer-specific connection
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Electrical interfaces
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Connection
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Solder pins with 1 mm diameter, 7-pole
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Communication
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Modbus TTL
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Power supply
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DC 10…35 V (max. 1 Watt), No galvanic isolation
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Connection pin assignment
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- Pin 1
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V+ (Supply voltage)
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- Pin 2
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SDA (Modbus Tx)
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- Pin 3
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SCL (Modbus Rx)
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- Pin 4
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NC (Modbus T/R)
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- Pin 5
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CDI-Rx (Serial transmission, service interface)
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- Pin 6
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CDI-Tx (Serial reception, service interface)
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- Pin 7
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GND (Reference potential for all circuits)
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Certificates and approvals
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CE mark
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The flow sensor is intended to act as an electronic component for integration into a device or system. The flow sensor is not a stand-alone measuring device and therefore does not require the CE mark to be affixed.
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RoHS
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Compliant with RoHS Directive
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Zero point adjustment
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- Description
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Factory calibration provides excellent zero-point stability, no general adjustment required. Adjustment may be recommended in specific conditions.
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- Preconditions for adjustment
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- Measuring line is completely shut off.
- Measuring tube is filled homogeneously and pressurized with at least 15 psi (gauge).
- During the zero-point adjustment, stability of measured flow rate is monitored.
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- Duration of adjustment
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Approximately 20 s
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- Abort conditions
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Unsuitable process conditions
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Flow damping
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PT1 system, Factory default: 0 s
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Low Flow Cutoff
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Mass flow value cut off to zero when threshold is underrun. Overruns 150% of set threshold to reset. No status message when cutoff is active.
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Empty Pipe Detection
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Detects empty or partly filled measuring tube. Sets mass flow to zero and status message when density underruns set threshold. Left when mass flow overruns 150% of set threshold (hysteresis). No status message when active.
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