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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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