Endress Hauser AG

- Model W 400 - Electromagnetic Flow Measuring System

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Sensor with EN ISO 12944 corrosion protection and state-of-the-art transmitter for Water&Wastewater. As a specialist with corrosion protection, Promag W is suitable for every application in the water and wastewater industry as well as for custody transfer. It is the ideal solution for direct underground installation or permanent underwater use. Promag W 400 saves time and costs thanks to the broad functionality of its water- and wastewater-optimized transmitter. In addition, Heartbeat Technology ensures compliance and process safety at all times.

  • For direct underground installation or permanent underwater use – certified sensor
  • Secure, reliable long-term operation – robust and completely welded sensor
  • Energy-saving flow measurement – no pressure loss due to cross-section constriction
  • Maintenance-free – no moving parts
  • Safe operation – no need to open the device due to display with touch control, background lighting
  • Time-saving local operation without additional software and hardware – integrated web server
  • Integrated verification – Heartbeat Technology™

  • The measuring principle is virtually independent of pressure, density, temperature and viscosity
  • The specialist in the water and wastewater industry for the most demanding applications

Device properties

  • International drinking water approvals
  • Degree of protection IP68 (Type 6P enclosure)
  • Approved for custody transfer to MI-001/OIML R49
  • Transmitter housing made of durable polycarbonate or aluminium
  • Same housing concept for compact/remote version
  • Integrated data logger: measured values monitoring

  • Liquid Measuring Principle : Electromagnetic
  • Product Headline : The flowmeter with integrated web server and a sensor with certified corrosion protection (EN ISO 12944). For direct underground installation or permanent underwater use. The specialist in the water and wastewater industry for the most demanding applications.
  • Sensor Features : Secure, reliable long‐term operation – robust and completely welded sensor. Energy‐saving flow measurement – no pressure loss due to cross‐section constriction. Maintenance‐free – no moving parts. International drinking water approvals. Degree of protection IP68 (Type 6P enclosure).
  • Transmitter Features : Safe operation – no need to open the device due to display with touch control, background lighting. Timesaving local operation without additional software and hardware – integrated web server. Integrated verification – Heartbeat Technology™. Transmitter housing made of durable polycarbonate or aluminium. Same housing concept for compact/remote version.
  • Nominal diameter range : DN 25 to 2000 (1 to 78')
  • Wetted materials :
    • Liner: Polyurethane; Hard rubber
    • Electrodes: 1.4435 (316L); Alloy C22, 2.4602 (UNS N06022); Tantalum
  • Measured variables : Volume flow, conductivity, mass flow
  • Max. measured error :
    • Volume flow (standard): ±0.5 % o.r. ± 1 mm/s (0.04 in/s)
    • Volume flow (option): ±0.2 % o.r. ± 2 mm/s (0.08 in/s), Flat Spec
  • Measuring range : 9 dm³/min to 110 000 m³/h (2.5 gal/min to 700 Mgal/d)
  • Max. process pressure : PN 40, Class 300, 20K
  • Medium temperature range :
    • Liner material hard rubber: 0 to +80 °C (+32 to +176 °F)
    • Liner material polyurethane: –20 to +50 °C (–4 to +122 °F)
  • Ambient temperature range :
    • Liner material hard rubber: 0 to +80 °C (+32 to +176 °F)
    • Liner material polyurethane: –20 to +50 °C (–4 to +122 °F)
  • Sensor housing material :
    • DN 25 to 300 (1 to 12'): AlSi10Mg, coated
    • DN 25 to 2000 (1 to 78'): Carbon steel with protective varnish
    • Sensor connection housing (standard): AlSi10Mg, coated
    • Sensor connection housing (option): Polycarbonate
  • Transmitter housing material : Polycarbonat; AlSi10Mg, coated
  • Degree of protection :
    • Compact version: IP66/67, type 4X enclosure
    • Sensor remote version (standard): IP66/67, type 4X enclosure
    • Sensor remote version (option): IP68, type 6P enclosure, with protective varnish according to EN ISO 12944 C5‐M/Im1/Im2/Im3
    • Transmitter remote version: IP66/67, Type 4X enclosure
  • Display/Operation :
    • 4‐line backlit display with touch control (operation from outside)
    • Configuration via local display, web browser and operating tools possible
  • Outputs :
    • 3 ouputs:
    • 0‐20 mA/4‐20 mA HART (active)
    • Pulse/frequency/switch output (passive)
    • Pulse/frequency output (passive)
    • Switch output (passive)
  • Inputs : Status input
  • Digital communication : HART, PROFIBUS DP, EtherNet/IP, Modbus RS485
  • Power supply : AC 100…240 V / AC/DC 24 V
  • Hazardous area approvals : cCSAus
  • Other approvals and certificates :
    • 3.1 material, calibration performed on accredited calibration facilities (acc. to ISO/IEC 17025), NAMUR, custody transfer according to MI‐001 or OIML R49 CRN
    • Drinking water approval: ACS, KTW/W270, NSF 61, WRAS BS 6920

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