Endress+Hauser Flowphant T DTT31 Technical Information
Endress+Hauser Flowphant T DTT31 Technical Information

Endress+Hauser Flowphant T DTT31 Technical Information

Flow switch
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TI00125R/09/EN/02.14
71252099
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Technical information

Flow switch
Flowphant T DTT31, DTT35
Flow switch for safe monitoring of mass flow and
temperature in industrial processes
Application
Flow switch for monitoring and displaying relative mass flow rates of liquid media in
the range from 0.03 to 3 m/s (0.1 to 9.84 ft/s):
Flowphant T DTT31 − with thread connections or coupling
Flowphant T DTT35 − with process connections for hygienic applications
Application examples:
• Monitoring cooling water circulation systems of pumps, turbines, compressors and
heat exchangers
• Monitoring pump functionality
• Leak monitoring in process lines
• Monitoring lubrication systems
• Filter monitoring in the beverage industry
Benefits at a glance
This compact flow switch impresses with the latest in technology being used:
• Practically no pressure loss
• Configuration software ReadWin 2000 or FieldCare for quick configuration and
reliable storage of device settings
• Optional: 4 to 20 mA analog output to read out the flow rate as percentage value
• Optional: second switch output or 4 to 20 mA analog output for temperature
monitoring
• Function check and process information onsite thanks to digital display at device
• Top housing section which can be rotated 310° and rotatable display make it possible
to read the measured values in all orientations
• DTT35: 3-A marked
Solutions
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Summary of Contents for Endress+Hauser Flowphant T DTT31

  • Page 1: Technical Information

    Flow switch for monitoring and displaying relative mass flow rates of liquid media in the range from 0.03 to 3 m/s (0.1 to 9.84 ft/s): Flowphant T DTT31 − with thread connections or coupling Flowphant T DTT35 − with process connections for hygienic applications Application examples: •...
  • Page 2: Function And System Design

    Process • Compression fitting • Hygiene: connection • Thread: − Conical metal-metal G½" − G½" and G¼" − Clamp 1" - 1½", 2" − ANSI NPT ¼" and NPT ½" − Varivent F, N − DIN 11851 − APV-Inline Endress+Hauser...
  • Page 3 PC network, then one suitable device is the process display RIA452: Digital process display unit in 96 x 96 mm (3.78 x 3.78 in) panel mounted housing for monitoring and displaying analog measured values with pump control and batch functions. Multicoloured 7-digit 14- Endress+Hauser...
  • Page 4: Measuring Range

    Switch point (SP) and switchback point (RSP) in increments of 1% with min. hysteresis of 5% • Damping: freely adjustable: 0 = off (no damping) or 10 to 40 s in increments of 1 second • Unit: %, optional °C, °F (with two outputs and temperature monitoring) Endress+Hauser...
  • Page 5: Electrical Connection

    DTT35: Electrical cables must comply with 3-A standard, must be smooth, corrosion resistant and cleanable. M12x1 M16x1.5 / NPT ½” A0023196 A: M12x1 connector B: Valve connector M16x1.5 or NPT ½" Device connection • DC voltage version with M12x1 connector A2’ L– L– 4...20 mA L– A0006818 Endress+Hauser...
  • Page 6: Current Consumption

    The device records fluid velocity relatively in relation to a set monitoring range of the flow (0 to 100 % as display value). An absolute measurement of the fluid velocity or the mass flow is not possible. The sensitivity of the calorimetric flow sensor changes with the fluid velocity. It increases with decreasing Endress+Hauser...
  • Page 7: Switch Point Non- Repeatability

    In the event of a temperature change of ≥ 0.5 K/min in the medium, temporary display drifts are possible which can exceed the specified non-reproducibility values of the switch point. Sensor reaction time 6 to 12 s Long-term drift 0.5% per year under reference operating conditions Endress+Hauser...
  • Page 8: Operating Conditions: Installation Instructions

    Do not install in down pipes open towards the end. The sensor tip should never touch the pipe wall. A0006978 Incorrect installation! • Electrical rotation of display by 180° • Housing can be rotated up to 310 ° mechanically Orientation No restrictions, but self draining. Endress+Hauser...
  • Page 9: Operating Conditions: Environment

    • 4 g as per German Lloyd GL Guidelines Electromagnetic • Interference emission as per IEC 61326 Series, class B electrical equipment compatibility • Interference immunity as per IEC 61326 Series, appendix A (industrial use) and NAMUR Recommendation NE 21 EMC influence: ≤ 0.5 % Endress+Hauser...
  • Page 10: Operating Conditions: Process

    24 (0.95) 38.5 (1.52) 36 (1.42) 6 (0.24) 6 (0.24) 6 (0.24) A0005279 All dimensions in mm (in) L = Insertion length Connector M12x1 as per IEC 60947-5-2 Valve connector M16x1.5 or NPT ½" as per DIN 43650A/ISO 4400 Endress+Hauser...
  • Page 11: Dtt31 Design, Dimensions For Process Connections

    Process connection versions DTT35 Conical metal-metal for hygienic processes, G½" thread. Suitable welding boss available as an accessory. Thread length L = 14 mm (0.55 in) Clamp 1" up to 1½" (ISO 2852) or DN 25 up to DN 40 (DIN 32676) Endress+Hauser...
  • Page 12: Human Interface

    LED for status Illumination red (= error/fault) Green = ok Red = error/fault Yellow LEDs for switching states LED red/green blinking = warning LED on = switch closed LED off = switch open Communication jack for personal computer A0020825-EN Endress+Hauser...
  • Page 13 DESINA. (DESINA = DistributEd and Standardized INstAllation technology for machine tools and manufacturing systems) CAL (calibration) Learn High Flow (HIF) Setting for maximum flowrate occurring. 100% value Learn Low Flow (LOWF) Setting for minimum flowrate occurring. 0% value Endress+Hauser...
  • Page 14 Locking, only visible with valid operating code. Device status (STAT) Last error (LSTA) Display of last error to occur. Simulation: Simulation 1 (SIMU) Simulation switch output 1: on/off with display, switch output version Simulation 2 (SIM2), optional optionally corresponding to switch output 2. Endress+Hauser...
  • Page 15: Switch-Point Function

    FieldCare provides further information on the Flowphant T: Function group Function (display) Description SERV Switching processes 1 Number of changes in switching status for (service functions) Switching processes 2, switch output 1; optionally switch output 2 optional Endress+Hauser...
  • Page 16: Certificates And Approvals

    Software revision Software version Certificates and approvals CE-Mark The device meets the legal requirements of the EC directives. Endress+Hauser confirms that the device has been successfully tested by applying the CE mark. Ship building approval (Germanischer Lloyd) Other standards and •...
  • Page 17 Material of parts in contact with process: 316L/ 1.4435 G½” Max. process pressure 16 bar (232 PSI) Order number: 60021387 A0006621 Coupling Coupling M12x1 for simple user installable assembly of the connecting cable; straight connection to M12x1 housing connector Order number: 52006263 P01-PMP13xxx-00-xx-00-xx-003 Endress+Hauser...
  • Page 18: Configuration Kit

    Order code: TXU10-AA • Configuration kit "Commubox FXA291" with interface cable for PCs with USB port. Intrinsically safe CDI interface A0008067 (Endress+Hauser Common Data Interface) for transmitters with 4-pole post connector. Suitable device configuration tool is e.g. FieldCare. Order code: FXA291...
  • Page 19 • ReadWin 2000 and FieldCare ’Device Setup’ can be downloaded free of charge directly from the internet at the following addresses: www.endress.com/readwin www.products.endress.com/fieldcare For the order of the FieldCare ’Device Setup’ software please ask your Endress+Hauser sales organisation. Power supply • Power supply Easy Analog RNB130 by Endress+Hauser with nominal output current I = 1.5 A.
  • Page 20 DTT31, DTT35 www.addresses.endress.com...

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Flowphant t dtt35

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