Hygienic design: Meter precisely and hygienically
Capacity range of the Sigma: 25 – 1,000 l/h, 10 – 4 bar
The hygienic design version of the sigma diaphragm metering pumps is optimised in terms of dead space, features as few gaps as possible and has smooth, wetted surfaces for flexible and easy use in hygienically sensitive applications.
The simple construction and smooth surface make easy CIP possible and allow the device to be dismantled at speed. Ball non-return valves and EPDM seals ensure gentle and reliable metering for tasks with strict hygiene requirements (when working with aqueous foods or food additives).
The DGUV test certificate for “Sigma metering pumps in the hygienic design” with its extensive testing provides additional peace of mind – a huge benefit for ProMinent customers.
Like all intelligent ProMinent metering pumps, the sigma product range can be flexibly controlled using a highly diverse range of signals. Designed for continuous operation, hermetically sealed and without a shaft passage into the metering chamber, providing simple and reliable handling. The PTFE multi-layer diaphragm with diaphragm rupture control as standard offers additional process reliability.
Your benefits
- Process reliability thanks to PTFE multi-layer safety diaphragm with condition monitoring
- Fast CIP, reliable operation and easy handling
- Simple construction, optimised in terms of dead space and small number of parts, reliable operation, no shaft passage into the media chamber
- Precise metering thanks to the option for adjusting the metering volume in 1% steps by means of stroke rate and stroke length
- Physiologically safe wetted materials (FDA and 1935/2004); reliable and flexible Sigma motor-driven metering pump with ball non-return valves enables a wide range of applications
- Flexibly connectible: connection to process control systems via integrated PROFIBUS®, CANopen interface
Technical Details
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
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 (Ra< 0.8 μm, optimised in terms of dead space and with as few gaps as possible)
- DGUV test certificate NV 23083 with the addition “Hygiene-tested”
- 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)
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
- CIP – Cleaning In Place
- CIP gets to work exactly where it’s needed
- Small volumes of disinfectant are produced and used on site for sterile machines and process water. Highly concentrated, dangerous chemicals and tedious disassembly are a thing of the past.
- Bottle Washing Machines
- Correct metering is key
- Perfectly metered cleaning chemicals effectively improve the cleaning quality of bottle washing machines. As an extra bonus, you save energy too.
- Large bakeries
- Baking with reproducible quality
- A large share of the bakery products we consume today are manufactured by machine. Producing goods that taste just right requires precise metering of the individual ingredients.
- Production of whey and cheese
- Perfect water for the entire production process
- To guarantee an end product fit for purpose, ProMinent ensures optimum water quality at every stage of production, thereby reliably complying with statutory hygiene standards.
- Cleaning fruit and vegetables
- Simple and reliable cleaning process for agricultural products
- Fresh fruit and veg are an essential part of our diet. So it’s very important for them to reach the consumer in a safe condition. Precise metering of chlorine dioxide ensures that this is the case.
