Specs at a glance
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Max. measurement error
Volume flow: ±0.5 % o.r. ± 2 mm/s (±0.5 % o.r. ± 0.08 in/s)
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Measuring range
9 dm³/min to 9600 m³/h (2.5 to 44000 gal/min)
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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)
Liner material PTFE: -20 to 70°C -
Max. process pressure
PN 40, Class 300, 20K
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Wetted materials
Liner: polyurethane; PTFE; hard rubber
Electrodes: 1.4435 (316L); Alloy C22, 2.4602 (UNS N06022)
Field of application
Promag W 800 is ideal for off-grid applications in the water industry, even flow measurement in direct underground installation or underwater. Promag 800 covers basic functionality, Promag 800 Advanced offers the full performance spectrum. The battery-powered transmitter provides worldwide transmission of measured data without additional energy supply. Heartbeat Technology ensures measurement reliability and compliant verification.
The bidirectional measuring principle is virtually independent of pressure, density, temperature and viscosity
Dedicated to the measurement of industrial or municipal water and wastewater
Device properties
International drinking water approvals
Degree of protection IP68 (Type 6P enclosure)
Transmitter housing made of durable polycarbonate
Battery lifetime up to 15 years
Measuring intervals can be adapted individually
Benefits
With corrosion protection for underground installation or permanent underwater use
Improved process safety – leakage detection with low flow and pressure measurement
Reliable measurement – accurate measured values even with 0 x DN inlet run
Long-term operation – robust and completely welded sensor
Secure data storage and transmission – worldwide encrypted communication over the mobile network
Convenient commissioning and operation – device access via Bluetooth using intuitive SmartBlue app
Integrated verification – Heartbeat Technology
Videos
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Proline Promag W 800 - battery-powered, long-lasting, secure and with Heartbeat Technology
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The Electromagnetic Flow Measuring Principle
Lean selection
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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
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Measuring principle
Electromagnetic
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Product headline
Battery-powered flowmeter with EN ISO 12944 corrosion protection & intelligent energy efficient mode.
For direct underground installation or permanent underwater use.
Certified sensor for the most demanding water and wastewater 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
Secure data storage and transmission – worldwide
encrypted communication over the mobile network . Convenient commissioning and operation – device
access via Bluetooth using intuitive SmartBlue app. Integrated verification – Heartbeat Technology.
Transmitter housing made of durable polycarbonate. Battery lifetime up to 15 years. Measuring intervals can be adapted individually. -
Nominal diameter range
DN 25 to 600 (1 to 24")
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Wetted materials
Liner: polyurethane; PTFE; hard rubber
Electrodes: 1.4435 (316L); Alloy C22, 2.4602 (UNS N06022) -
Measured variables
Volume flow
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Max. measurement error
Volume flow: ±0.5 % o.r. ± 2 mm/s (±0.5 % o.r. ± 0.08 in/s)
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Measuring range
9 dm³/min to 9600 m³/h (2.5 to 44000 gal/min)
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Max. process pressure
PN 40, Class 300, 20K
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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)
Liner material PTFE: -20 to 70°C -
Ambient temperature range
Flange material carbon steel: –10 to +60 °C (14 to +140 °F)
Flange material stainless steel: –40 to +60 °C (–40 to +140 °F) -
Sensor housing material
DN 25 to 300 (1 to 12"): AlSi10Mg, coated
DN 350 to 600 (14 to 24"): Carbon steel with protective varnish -
Transmitter housing material
Polycarbonat
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Degree of protection
Compact version: IP66/67, type 4X enclosure and IP68, type 6P 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 -
Display/Operation
4‐line backlit display with touch control (operation from outside)
Configuration via local display and operating tools possible; Remote data access via mail and SMS -
Outputs
3x Pulse/switch output (passive); Modbus RS485
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Inputs
Status input
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Digital communication
LTE Cat M1; LTE Cat NB1; LTE Cat NB2; GPRS; EGPRS
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Power supply
Internal:
Batteries per DC 3.6 V External:
AC 85 to 265 V (47 to 63 Hz) / DC 19 to 30 V -
Hazardous area approvals
CSA, GP
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Metrological approvals and certificates
Calibration performed on accredited calibration facilities (acc. to ISO/IEC 17025)
Heartbeat Technology complies with the requirements for measurement traceability according to ISO 9001:2015 – Section 7.1.5.2 a (TÜV SÜD attestation) -
Pressure approvals and certificates
CRN, PED
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Hygienic approvals and certificates
Drinking water approval: ACS, KTW/W270, NSF 61, WRAS BS 6920
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