Technical Data
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| Measuring Principle | Electromagnetic |
| Product headline | The flowmeter with outstanding abrasion resistance and integrated solids content diagnostics. Superb signal stability due to unique signal processing. Ideal for the most demanding applications with high solids content and high abrasion. |
| Sensor features | Maximum safety – industry-optimized measuring electrodes and linings. Energy‐saving flow measurement – no pressure loss due to cross section constriction. Maintenance‐free – no moving parts. Intensified coil system. Large range of liners. Solids content up to 80 % by weight. |
| Transmitter features | Highest performance – with integrated solids measurement for demanding fluids. Highest safety – integrated electrode cleaning. Automatic recovery of data for servicing. 4-line backlit display with touch control. Two switch outputs. HART, PROFIBUS PA/DP, FOUNDATION Fieldbus. |
| Nominal diameter range | DN 15...600 1/2"...24" |
| Wetted materials | Liner: Polyurethane, Hard rubber, PFA, PTFE, Natural rubber Electrodes: 1.4435/304L, Alloy C-22, Tantalum, Platinum, Duplex 1.4465, Tungsten carbide, Titanum |
| Measured variables | Volume flow, electrical conductivity, mass flow |
| Max. measurement error | Volume flow: ±0.5 % o.r.± 1 mm/s (0.04 in/s) Option: ±0.2 % o.r. ± 2 mm/s (0.08 in/s) |
| Measuring range | 0.06 dm3/min to 600 m3/h (0.015 gal/min to 2650 gal/min) |
| Max. process pressure | PN 40, Cl. 300, JIS 20 K |
| Medium temperature range | 0 to +60 °C (+32 to +140 °F), 0 to +80 °C (+32 to +176 °F), –20 to +50 °C (–4 to +122 °F), –20 to +180 °C (–4 to +356 °F), –20 to +150 °C (–4 to +266 °F) |
| Ambient temperature range | –40 to +60 °C (–40 to +140 °F) |
| Sensor housing material | Aluminum coated AlSi10Mg, carbon steel with protective varnish |
| Transmitter housing material | Powder-coated die-cast aluminum |
| Degree of protection | Standard: IP 67 (Type 4X enclosure) for transmitter and sensor Optional: IP 68 (Type 6P enclosure) for remote version of Promag S sensor |
| Display/Operation | Liquid-crystal display: illuminated, four lines with 16 characters per line Onsite operation with three optical sensor keys |
| Outputs | 4...20mA (active/passive) Pulse-/ Frequency output (active/passive) Two status outputs |
| Inputs | Status Current input |
| Digital communication | HART, PROFIBUS DP/PA, FOUNDATION Fieldbus |
| Power supply | AC 20 to 260 V DC 20 to 64 V |
| Hazardous area approvals | ATEX, FM, CSA, UK Ex |
| Product safety | CE, C-tick, EAC marking |
| Pressure approvals and certificates | CRN, PED |
| Material certificates | 3.1 material |
| Hygienic approvals and certificates | Drinking water approval:ACS, KTW-BWGL, NSF 61, WRAS BS 6920 |
The Promag 55S is designed for non-uniform, abrasive and corrosive fluids. The sensor uses an industry-optimized liner and is rugged, suitable for the most challenging environments and metering applications, such as wastewater treatment, pulp and paper, and primary raw materials and metallurgy. The Promag 55S is equipped with a high-performance transmitter that not only measures flow reliably but also calculates the solids content with low maintenance requirements.
Benefits:
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Unique signal processing, outstanding signal stability
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Highest safety factor - industry-optimized measuring electrodes and liner
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Energy-saving flow measurement - cross-section identical to the pipe, no pressure loss
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Best performance - for demanding fluids, with built-in solids content detection
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Highest safety level - integrated electrode cleaning
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Automatic data recovery for easy maintenance
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Maintenance-free - no moving parts
Application areas:
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Bidirectional measuring principle not limited by pressure, density, temperature or viscosity
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Ideal for measuring media with high solids content and high abrasiveness
Instrument features
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Reinforced coil system
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Wide range of optional liners
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Solids content up to 80 % by weight
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Four-line backlit display with touch control
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Two switch outputs
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HART, PROFIBUS PA/DP, FOUNDATION Fieldbus
Spare Parts & Accessories 89
89 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 71029347 | full-range power supply board85-260VAC 20-55VAC 20-64 VDC | Details |
| 71039470 | Full-Range Power Supply HE Power Supply Board85-260VAC 20-55VAC 20-64 VDC HE = harsh environment | Details |
| 50094003 | fuseKit Bus/connec.b.5X/40/8X/65 field hous. | Details |
| 71029343 | amplifier boardLanguage: FR,ES,IT,NL,PT,DE,EN | Details |
| 71039462 | amplifier boardLanguage: FR, ES, IT, NL, PT, DE, EN HE = harsh environment | Details |
| 71029344 | amplifier boardLanguage: SV,FI,NO,RU,PL,CS,EN | Details |
| 71039463 | amplifier boardLanguage: SV, FI, NO, RU, PL, CS, EN HE = harsh environment | Details |
| 71029345 | amplifier boardLanguage: JA,ID,EN | Details |
| 71039464 | amplifier boardLanguage: JA, ID, EN HE = harsh environment | Details |
| 71029346 | amplifier boardLanguage: ZH,EN | Details |
| 71039465 | amplifier boardLanguage: ZH, EN HE = harsh environment | Details |
| 71704637 | Measuring amplifier kit, 55S, non-hazardous, WEA | Details |
| 71704641 | Measurement amplifier kit, 55S, N-haz, WEA, HEHE = harsh environment | Details |
| 71704638 | Measurement amplifier kit, 55S, N-haz, ESS | Details |
| 71704642 | Measuring amplifier kit, 55S, N-haz, ESS, HEHE = harsh environment | Details |
| 71704639 | Measurement amplifier kit, 55S, non-hazardous, SEA | Details |
| 71704643 | Measurement amplifier kit, 55S, non-hazardous, SEA, HEHE = harsh environment | Details |
| 71704640 | Measuring amplifier kit, 55S, non-hazardous, CN | Details |
| 71704644 | Measuring amplifier kit, 55S, non-hazardous area, CN, HEHE = harsh environment | Details |
| 50098300 | Explosion-proof Current/Frequency Input Module with 2-Channel Relay OutputKit com 53/83/93/65 curr/freq/2Relay Ex | Details |
Configurator / Comparison
Measuring principle video
Click to playSource: public information from the Endress+Hauser website
Manuals & Documents 12
All documents for this model12 documents · click to expand
Proline Promag 55 English
Proline Promag 55 PROFIBUS DP/PA Operating Instructions English
Proline Promag 55 FOUNDATION Fieldbus Operating Instructions English
Proline Promag 55 PROFIBUS DP/PA Description of Device Functions English
Proline Promag 55 English
Proline Promag 55 FOUNDATION Fieldbus Description of Device Functions English
Proline Promag 55 English
Proline Promag 55 English
Proline Promag 55 FOUNDATION Fieldbus Description of Device Functions English
Proline Promag 55 FOUNDATION Fieldbus Operating Instructions English
Proline Promag 55 PROFIBUS DP/PA Operating Instructions English
Proline Promag 55 PROFIBUS DP/PA Description of Device Functions English
Case Studies
Municipal Wastewater Treatment · Electromagnetic flow meter — Application Case
Site Conditions
This is a Municipal Wastewater Treatment customer whose plant is at the inlet, biological and outlet stages of a municipal plant. The main task was volumetric flow of conductive liquids.
The Problem
The difficulty lies in high solids and corrosive fractions, with large diurnal flow swings; at the same time effluent parameters drift and probes foul with sludge and biofilm. Specification therefore means choosing liner and electrode pairing by conductivity, solids and abrasion.
What We Did
We took a flow range approach — flow solution matched to line size, medium and range. Delivery was built around choosing liner and electrode pairing by conductivity, solids and abrasion, with point-by-point checks on: stable compliance with Grade 1A discharge limits and online data reporting.
Operating Outcome
In service the system performs as intended — no obstruction, so pressure loss is minimal and upkeep low, with routine maintenance falling noticeably.
Food & Beverage · Electromagnetic flow meter — Application Case
Application Context
dosing, pasteurising, filling and CIP stages is a typical Food & Beverage duty. The project started from Electromagnetic flow meter, focusing on volumetric flow of conductive liquids.
Process Constraints
frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles, and syrups, dairy and beverages that scale easily, under strict hygienic requirements only amplify it. The Electromagnetic flow meter specification must therefore cover choosing liner and electrode pairing by conductivity, solids and abrasion.
Delivery Approach
Delivery was handled as the flow range — flow solution matched to line size, medium and range. Execution centred on choosing liner and electrode pairing by conductivity, solids and abrasion, together with food-safety and hygienic design per 3-A / EHEDG.
Field Results
Operation shows the benefit clearly — no obstruction, so pressure loss is minimal and upkeep low, with confidence in this measuring point improving markedly.
Chemical & Pharmaceutical · Electromagnetic flow meter — Application Case
Customer Profile
The typical setting in Chemical & Pharmaceutical is reactors, metering vessels and finished-product tanks. The measuring point is Electromagnetic flow meter; the focus is volumetric flow of conductive liquids.
Key Difficulties
Conditions are highly corrosive media with solvents and crystallisation, partly in explosive atmospheres and, on top of that, corrosion plus Ex protection shortens instrument life and makes downtime costly, which a standard configuration cannot handle for long. The design therefore starts with choosing liner and electrode pairing by conductivity, solids and abrasion.
Implementation
The scope ran through the flow range: flow solution matched to line size, medium and range. Technically it hinges on choosing liner and electrode pairing by conductivity, solids and abrasion, and on these requirements: Ex certification and GMP traceability of records.
Customer Benefit
In practice this means no obstruction, so pressure loss is minimal and upkeep low, which cut the workload on the site maintenance team.
Power & Energy · Electromagnetic flow meter — Application Case
Project Background
The project covers boiler feedwater, turbine condensate and FGD/DeNOx systems. The work centres on Electromagnetic flow meter and the core task is volumetric flow of conductive liquids.
Operating Challenges
The medium and duty are characterised by high temperature and pressure with both steam and saline water, and drift under high temperature and pressure, with very costly unplanned outages. So Electromagnetic flow meter cannot be specified generically — it calls for choosing liner and electrode pairing by conductivity, solids and abrasion.
Solution
The Ainstru engineering team worked through the flow range: flow solution matched to line size, medium and range. The configuration involves choosing liner and electrode pairing by conductivity, solids and abrasion, with these requirements in view: compliance with power-industry codes and unit availability targets.
Results
Since start-up the system has run steadily; the practical result is no obstruction, so pressure loss is minimal and upkeep low.
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