Motor-driven metering pump sigma Hygienic

Field of application

The following list of applications are general examples of generally suitable applications for this product. Please contact your local sales representative to talk about the applicable use of this product in your specific case / environment.

Metering of aqueous foods or food additives in the food and beverage industry. Example:

• Metering of dyes, e.g. beta carotene
• Metering of aromas, flavour additives, sugar solutions, additives
• Metering of enzymes, stabilisers, liquid yeasts

Capacity ranges:

• Sigma/ 1: 25 l/h/10 bar to 67 l/h/7 bar
• Sigma/ 2: 49 l/h/10 bar to 360 l/h/4 bar
• Sigma/ 3: 149 l/h/10 bar to 1,000 l/h/4 bar

Wetted materials:

• Liquid end, valves, valve seat: 1.4435
• Seals: EPDM, FKM (optional)
• Valve balls: Al₂O₃
• PTFE multi-layer diaphragm with optical, optionally electric diaphragm rupture warning system

Connection types:

• Groove-terminal: DIN 11864-3
• Groove-flange: DIN 11864-2
• Other types of connection on request

Confirmations:

• FDA
• 1935/2004 (10/2011, GMP ordinance EC 2023/2006)
• AoF
• EN10204 Type 3.1 factory certificate for material (stainless steel, Al₂O₃) on request
• EN10204 Type 2.2 factory certificate for surface roughness Ra< 0.8 µm on request

Features:

• CIP-capable up to 130 °C, max. 2 bar, max. 15 min.
• Hygienic design liquid end: Smooth surfaces (wetted surfaces are electropolished Ra < 0.8 μm
• Optimised in terms of dead space, features as few gaps as possible
• Maintenance-friendly ball non-return valves, symmetrical ball seat
• Simple maintenance thanks to rapid-action clips (DIN 11864)
• Sealing design makes for easy cleaning (DIN 11864)
• Free of welded seams and shaft passages, e.g. mechanical seals
• Stroke length adjustment: 0– 100 %, stroke length adjustment using manually self-locking rotary dial in 1 % steps
• Precision of better than 1 % (under correct and constant conditions, with correct installation and calibration in terms of maximum stroke volume)

Pump version Sigma X

• Integrated controller, universal and flexible. Simple connection to your process.
• External activation via potential-free contacts, mA or ProfiBus and/or ProfiNet via Dulconvert
• Removable operating panel
• Remote transmission of operating statuses via an additional output or relay module
• Wide-range voltage power unit, power supply: 1 ph, 100 – 230 V ±10 %, 240 V ±6 %, 50/60 Hz
• Combination of high-strength cast aluminium housing with fibreglass-reinforced plastic housing
• IP 65 degree of protection

Pump version Sigma Basic

• A wide range of power end/drive versions is available: Three-phase standard AC motor, 1-phase AC motor
• Various flange designs for using customised motors
• Special voltages on request
• Electrical stroke length adjustment via actuator or control drives (optional)
• IP 55 degree of protection
• Combination of high-strength cast aluminium housing with fibreglass-reinforced plastic housing
• ATEX design: Areas at risk from explosion II 2G Ex h IIC T3 Gb X or II 2G Ex h IIC T4 Gb X (optional)