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                                                                                                                Measuring Range
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             Up to 164 ft/s, Low-Speed Version  Up to 304 ft/s, Standard Version  Up to 607 ft/s, Maximum Version  Up to 735 ft/s, High-Speed Version  
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                                                                                                                Note for Measuring Range
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             All measured values related to DIN 1343 standard conditions 32 ºF and 14.7 psi ex works.  
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                                                                                                                Accuracy
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             ± 0.3% of Full Scale (F.S.)  ± 1.5% of Measured Value (M.V.)  
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                                                                                                                Accuracy on Request
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             ± 1.0% of Measured Value (M.V.)  ± 0.3% of Full Scale (F.S.)  
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                                                                                                                Accuracy Indications
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             Relative to Ambient Temperature 71.6 ºF +2 ºF, System Pressure 6 bar  
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                                                                                                                Repeatability
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             0.25% of Measured Value (M.V.) in Case of Correct Mounting (Mounting Aid, Position, Inlet Section)  
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                                                                                                                Measuring Principle
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             Thermal Mass Flow Sensor  
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                                                                                                                Response Time
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             t 90 <3 sec  
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                                                                                                                Operating/Ambient Temperature Range
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             -4 to 158 ºF 
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                                                                                                                Media Temperature Range
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             -4 to 356 ºF 
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                                                                                                                Media Temperature Range (ATEX Version)
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             -4 to 248 ºF 
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                                                                                                                Adjustment Possibilities via Display, External Hand- Held Device PI 500, PC Service Software, Remote Diagnosis
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             Nm³/h, Nm³/min, Nl/min, l/s, ft/min, cfm, kg/h, kg/min, inner diameter, reference conditions ºC/ºF, mbar/hPa, zero point correction, leak flow volume suppression, scaling analog output 4...20 mA, pulse/alarm, error codes etc.  
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                                                                                                                Standard Outputs
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             1 x 4 to 20 mA Analog Output (Electrically Not Isolated)  Pulse Output  RS 485 (Modbus-RTU)  
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                                                                                                                Optional Outputs
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             2 x 4 to 20 mA Active  HART  M-Bus  Mod- bus TCP  Profibus DP  Profinet  
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                                                                                                                Burden
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             <500  Ω 
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                                                                                                                Additional Average Value Calculation
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             For all parameters freely adjustable from 1 minute up to 1 day, e. g. 1/2 hours average value, average day value  
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                                                                                                                Protection Class
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             Ingress Protection (IP 64) for ATEX II 2D Ex tb IIIC T90°C Db  Ingress Protection (IP 67)  
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                                                                                                                Housing Material
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             Die-Cast Aluminum  
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                                                                                                                Sensor Tube Material
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             Stainless Steel 1.4404  
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                                                                                                                Operating Pressure
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             232 psi 
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                                                                                                                Special Version Operating Pressure
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             580 psi 
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                                                                                                                Direct Current (DC) Supply Voltage
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             18 to 36 V 
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                                                                                                                Power Supply
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             5 W 
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                                                                                                                Approval
                                                                                                            
                                                                                                                                                                                                                                                                                                                     
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                                                                                                             ATEX II 2G Ex db IIC T4 Gb  ATEX II 2D Ex tb IIIC T90 ºC Db  DVGW  
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                                                                                                        There are different options available for connection to modern Bus systems:- Ethernet interface (Modbus-TCP) / PoE
 - M-BUS
 - Modbus-RTU
 - Profibus DP interface (in process)
 - Profinet interface (in process)
 - HART (in process)
 
 
  
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                                                                                                        - 4 values on the display: Flow, total consumption, velocity, temperature. Units freely adjustable
 - All measured values, settings such as gas type, inner diameter, serial number and so on can be accessed via Modbus-RTU
 - Comprehensive diagnostic functions readable on the display or remote access via Modbus such as calibration cycle, error codes, serial number
 - Notification in case of exceeding the calibration cycle
 - Standard version accuracy 1.5% of m.v. ± 0.3% of f.s.
 - Precision version accuracy 1.0% of m.v. ± 0.3% of f.s
 - Measuring span of 1 : 1000 (0.33 ft/s up to 735 ft/s)
 - Configuration and diagnosis via display, hand-held device PI 500, PC service software on-site
 - Gas type (air, nitrogen, oxygen, argon and so on) freely adjustable via PC service software or external device DS 400, DS 500, PI 500
 - Reference conditions ºC and PST / hPA freely adjustable
 - In-Situ adjustment, leak flow volume suppression
 - Pressure loss negligible
 
 
  
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                                                                                                        - Robust impact-proof aluminum die cast housing for the outdoor area IP 67
 - All wetted parts made from stainless steel 1.4404
 - On request with DVGW approval for natural gas (up to 232 psi)
 - Pressure range up to 232 psi, special version up to 580 psi
 - Media temperature range up to 356 ºF (ATEX version up to 248 ºF)
 - No moveable parts, no wear
 - Sensor tip very robust, easy to clean
 - Housing rotatable, display rotatable by -356 ºF
 
 
  
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                                                                                                        The screwing with a centring device is designed such that the sensor is positioned accurately in the center when screwing it into the measuring section; furthermore, it enables an exact positioning in the flow direction. This eliminates unnecessary measuring faults.
  
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