Beta® b solenoid metering pumps

Summary

Product Identification

The ProMinent Beta® b solenoid metering pumps are available in BT4b and BT5b models.

Operating Limits

Performance Data

Performance data varies significantly by pump type (e.g., 1000, 0700, 2001, 0232) and liquid end configuration (standard or self-bleeding). Key parameters include:

• Minimum pump capacity at maximum back pressure (l/h, ml/stroke)
• Minimum pump capacity at medium back pressure (l/h, ml/stroke)
• Connector size (outside Æ x inside Æ mm)
• Suction lift* (m WS)
• Priming lift** (m WS)
• Maximum priming pressure on suction side (bar)

* Suction lift is specified with a filled suction line and filled liquid end, or with air in the suction line for self-bleeding dosing heads. ** Priming lift is specified with clean and moist valves, at 100 % stroke length and free outlet or opened bleed valve. *** Performance data for self-bleeding dosing heads constitutes guaranteed minimum values, calculated using medium water at room temperature. The bypass connection with a self-bleeding dosing head SEK is 6x4 mm. Metering pumps with dosing heads for higher-viscosity media have a 10-20 % lower metering capacity and are not self-priming.

See the official PDF for exact tabulated values for each pump type.

Accuracy

• Standard Liquid End:
  • Capacity range of the series: -5 ... +10 % (at max. stroke length and max. operating pressure for all material versions)
  • Reproducibility: ±2 % (at constant conditions and min. 30 % stroke length)
• Self-Bleeding Liquid End: No dosing accuracy or reproducibility can be provided when used with outgassing media and when operating with air bubbles. The recommended minimum stroke length is 50 %.

Viscosity

Liquid ends are suitable for the following viscosity ranges:

• Standard: 0 ... 200 mPas
• With valve springs: 200 ... 500 mPas
• Self-bleeding (SEK): 0 ... 50 mPas
• HV (highly viscous): 500 ... 3000 mPas (only when installation is correctly adjusted)

Temperatures

• Storage and transport temperature: -20 ... +60 °C
• Ambient temperature in operation (drive and control): -10 ... +45 °C
• Liquid end temperature (long-term*): -10 ... +45 °C
• Liquid end temperature (short-term*):
  • PPT: 100 °C
  • NPT: 60 °C
  • PVT: 120 °C
  • TTT: 120 °C
  • SST: 120 °C * Long-term at max. operating pressure, dependent on ambient and feed chemical temperatures. Short-term for 15 min at max. 2 bar, dependent on ambient and feed chemical temperatures.

Climate

• Maximum air humidity: 95 % rel. humidity (non-condensing)
• Exposure in a humid and alternating climate: FW 24 according to DIN 50016

Electrical

General Electrical Data

• Nominal power, approx.: 6.4 ... 16.5 W or 20 ... 25 W (depending on model)
• Current I eff: 0.65 ... 0.1 A or 0.9 ... 0.3 A (depending on model)
• Peak current: 4.2 ... 1.3 A or 5.9 ... 2.3 A (depending on model)
• Switch on peak current (within approx. 50 ms falling): 15 A
• Fuse*: 0.8 AT * Fuses must have VDE, UL, and CSA certification.

Model-Specific Electrical Data

• Beta b BT4b:
  • Nominal power, approx.: 17.4 W
  • Nominal current (averaged at 180 H/min): 3.9 ... 1.9 A
  • Peak current: 15.6 ... 8.7 A
  • Closed current (no stroke): 32 ... 24 mA
  • Fuse*: 5 AT (5x20 mm, order no. 712028)
  • Version: 100 - 230 V ±10 %, 50/60 Hz
  • Design: 12 - 24 VDC# -8/+24 %, identity code M (# SELV in accordance with EN 60335-1)
• Beta b BT5b:
  • Nominal power, approx.: 24.4 W
  • Nominal current (averaged at 180 H/min): 2.5 A
  • Peak current: 11.7 A
  • Closed current (no stroke): 24 mA
  • Fuse*: 5 AT (5x20 mm, order no. 712028)
  • Version: 100 - 230 V ±10 %, 50/60 Hz
  • Design: 24 VDC# -15/+24 %, identity code N (# SELV in accordance with EN 60335-1) The pump only works if the polarity is correct.

Mechanical / Hydraulic

Material Data

• Housing parts: polyphenyl ether (PPE with fibreglass)
• Liquid End Components (Dosing head, Suction/Discharge connector, Seals, Valve balls):
  • PPE: Polypropylene, Polypropylene, EPDM, Ceramic
  • PPB: Polypropylene, Polypropylene, FPM, Ceramic
  • PPT: Polypropylene, PVDF, PTFE, Ceramic
  • NPE: Acrylic glass, PVC, EPDM, Ceramic
  • NPB: Acrylic glass, PVC, FPM, Ceramic
  • NPT: Acrylic glass, PVDF, PTFE, Ceramic
  • PVT: PVDF, PVDF, PTFE, Ceramic
  • TTT: PTFE with carbon, PTFE with carbon, PTFE, Ceramic
  • SST: Stainless steel 1.4404, Stainless steel 1.4404, PTFE, Ceramic
  • Self-bleeding versions in PPE, PPB, NPE, and NPB material models include a valve spring made of hastealloy C and a valve insert made of PVDF. Diaphragm with a PTFE coating.
  • FPM = fluororubber.
  • The connector width is 6 mm on SST material versions.

Protection Class and Safety Requirements

• Protection against contact and humidity: IP 65 in accordance with IEC 529, EN 60529, DIN VDE 0470 Part 1
• Degree of protection: 1 - mains power connection with protective earth conductor

Compatibility

Some hydraulic parts of the Beta® b are identical to those of the Beta® a, gamma/L, and delta®. Compatibility exists with pumps of the Beta® a, gamma/L, and delta® series for:

• Signal cable gamma/Vario 2-, 4- and 5-wire for the "Extern" function
• Level switch 2-stage (gamma / Vario / Beta®)
• Dosing line cross-sections
• Standard gamma connector kit
• Chemical feed container
• Overall height (distance between the suction and discharge connector)
• Accessories such as back pressure valves, multifunctional valves, dosing monitor, and flushing equipment

Sound Pressure Level

• LpA < 70 dB according to EN ISO 20361 (at maximum stroke length, maximum stroke rate, maximum back pressure (water)).

Shipping Weight

Shipping weights vary by pump type and material version (PP, NP, PV, TT, SS). See the official PDF for exact tabulated values.

Dimensional Drawings

Dimensional drawings for Beta b BT4b/BT5b, across various material versions (PP, NP, PV, TT, SS), and with/without self-bleeding dosing heads, are provided in the official PDF. All dimensions are in mm.

Diagrams for Setting Metering Capacity

The official PDF contains diagrams illustrating metering capacity (C) for medium back pressure dependent on stroke length (s) for different stroke rates (f), along with corresponding correction factors (k) dependent on back pressure (p) for various BT4b and BT5b models.

Exploded Views of Liquid Ends

Exploded views of liquid ends are available in the official PDF for various Beta® b types and material versions (PP, NP, PV, TT, SS), including self-bleeding dosing heads. These views detail components such as connector kits, valve balls, bleed valves, discharge valves, diaphragms, safety diaphragms, and suction valves, along with their respective part numbers.

Further Order Information

Further information on spare parts, accessories, options, spare parts kits for SEK/SER types, sealing sets, relay retrofit kits, and interference suppression aids (Varistor, RC Gate) is available in the official PDF, exploded drawings, identity code, and at www.prominent.com.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the complete OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

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