Dosing of pork fat and water in the production of animal feed

Application Note | Food & Beverage

  • Coriolis mass flow measurement of ingredients for animal nutrition
  • No risk of clogging due to twin straight tube meter design
  • Replacement of turbine meter to increase production efficiency and product quality
Background

A French company is specialised in the manufacture of animal nutrition. Pork fat and water are essential ingredients of their animal feed products. Constant dosing of the media is paramount to receiving the desired product quality.

Measurement requirements

In order to guarantee this, pork fat and water must be continuously measured during the dosing process. Unlike water, pork fat is a rather adhesive medium with a density of 700 kg/m3(ca. 43.7 lb/ft3) and a viscosity of 20 mPas. The flow rate is 200…1500 kg/h (ca. 7.3…55 lb/min) at 3 bar / 43.5 psi. For many years, the customer used a turbine meter to master this dosing application. However, this device often needed cleaning due to clogging. Thus, the turbine meter required significant and costly maintenance and caused process interruption affecting the whole production process. The customer was therefore looking for a maintenance-free flowmeter capable of measuring the pork and water reliably and with a good degree of accuracy.

KROHNE Solution

Having already made good experience with one of KROHNE’s electromagnetic flowmeters in another application, the customer once again turned to KROHNE for advice. The manufacturer and supplier of industrial process instrumentation recommended using the Coriolis mass flowmeter OPTIMASS 1300 C. The twin straight tube meter was provided with stainless steel tube (DN25 / 1") and fitted with electric heating to keep the pork fat at temperature. Due to its construction without moving parts, the meter allows self-draining.

Customer benefits

Unlike the turbine meter previously used, there is no clogging with the OPTIMASS 1300. The customer benefits from increased production and reduced maintenance costs as process interruption is no longer an issue. In addition, the KROHNE mass flowmeter helps the customer gain a much better and more stable product quality. Adding only as much pork fat as necessary, the customer also saves on this ingredient in the end. As the OPTIMASS 1300 C is a cost-effective, yet accurate (± 0.15 %) device compared to other lower cost meter ranges on the market, the customer also benefits from a much more accurate dosing.

Products used
OPTIMASS 1300
Coriolis mass flowmeter for universal applications and process control
  • For mass, density and volume flow of liquids and gases up to +130°C / +266°F
  • Also certified for hygienic use
  • Flange: DN15…100 / ½…4", max. PN100 / ASME Cl 600; many hygienic fittings
  • 3 x 4…20 mA, HART®, Modbus, FF, Profibus-PA/DP
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