E H Germany Made Endress+Hauser Promag W 300 Electromagnetic Flowmeter 5W3B15 Water Meter 5W3B25 5W3B2H 5W3B3H

Accuracy

The standard version gives ±0.5 % of reading plus ±1 mm/s. There's an optional “flat spec” version that improves upon that: ±0.2 % ±2 mm/s.

“0 × DN / Full bore”

This lets you install the meter directly after bends, T-fittings etc., with no need for long straight pipe runs upstream or downstream. That saves space, simplifies installation, and reduces pressure loss.

Wide range sizes and flows

It supports a large nominal diameter range (DN 25 up to DN 3000, i.e. ~1″ to 120″) and flow measurement range from about 0.5 m³/h up to 263,000 m³/h.

Temperature & liner materials

Different liner materials (hard rubber, polyurethane, PTFE) let you adapt to various media temperatures. For example, PTFE liner allows up to +90 °C in some cases.

Pressure ratings & construction

It supports up to PN 40 (Class 300 / 20K) in process pressure. Wetted parts are robust materials: electrodes in stainless steels, Alloy C22, tantalum; sensor housing materials are corrosion-protected.

Operation, diagnostics, verification

It has a compact, dual-compartment transmitter with up to 3 I/Os; backlit display with touch control; remote display option; various connectivity options (fieldbuses etc.). It uses Heartbeat Technology for verification, diagnostic tools, traceability.

Suitability for harsh / hazardous environments

Designed for water/wastewater plants, possibly submerged/underground installation; corrosion protection (per EN ISO 12944) etc. Approvals for drinking water; degree of protection up to IP68.

Flow measurement error (standard)

±0.5 % of rated flow + ±1 mm/s

Flow measurement error (flat spec option)

±0.2 % o.r. ±2 mm/s

Flow range

From approx. 0.5 m³/h up to 263,000 m³/h

Nominal Diameter

DN 25 to DN 3000 (≈ 1″ to 120″)

Medium temperature (depending on liner)

Hard rubber: 0 to +80 °C; Polyurethane: –20 to +50 °C; PTFE: –20 to +90 °C

Max process pressure

PN 40 / Class 300 / 20K

Wetted materials

Liners: hard rubber, polyurethane, PTFE; Electrodes: 1.4435 (316L), Alloy C22, UNS N06022, Tantalum