Solids Flowmeters

Exact measurment of material throughput

The optimum solids flowmeter scale for every field of application: under the name SITRANS, we offer you the appropriate low-maintenance solids flowmeter for every application involving the continuous measurement of the throughput of free-flowing bulk materials, powders, and granulates. The systems make a contribution toward optimization of your processes.

Solids Flowmeter:

SITRANS WF100

SITRANS WF100 flowmeter is a low to medium capacity flowmeter for various product sizes, densities, and fluidities in restricted spaces.

WF100 is unaffected by corrosive, abrasive, or hot materials.
Handling various product sizes, densities, and fluidities including fine powders such as sugar, the WF100 helps to improve final product, increase operating efficiency, and realize significant cost savings.
Dry bulk solids enter the flow guide producing a mechanical deflection as they strike the flowmeter sensing plate before continuing through the process un-hindered. The WF100 converts the deflection into an electrical signal that feeds into an accompanying integrator, which instantaneously displays the flow rate and totalizes the weight.

Applications:

Monitoring of food ingredients, pet food blending, plastic pellet production, silica sand in glass making

Benefits:

Flowrates from 3 to 200 t/h (4 to 220 STPH)
Process temperature to +65 ºC (+150 ºF)

SITRANS WF200 and WF250

SITRANS WF200 and WF250 flowmeters are medium to high capacity flowmeters for various product sizes, densities, and fluidities.

Operating with a microprocessor based integrator package, the WF200 series flowmeters display flow rate, totalized flow, and rate alarms. Outputs are 0/4 to 20 mA proportional to rate and contact closure for remote totalization. Dry bulk solids enter the flowmeter before continuing through the process unhindered.

The load cells convert the horizontal force of the deflection into an electrical signal. The integrator processes this into flowrate and integrated total weight. The sensing process is immune to the effect of product build-up as only the horizontal force is measured.
With load cells located externally to the process, the WF200 series flowmeters measure high capacities with a maximum rate of 900 t/h (990 STPH). For high capacity aerated gravity conveyor pre-feed, the WF250 has a maximum rate of 900 t/h (990 STPH).

Application:

Grinding mill rejects in cement, load-out of grains and seeds, Cement in aerated gravity conveyor

Benefits:

For specialized pre-feed applicationsSensing element mounted outside process
Flowrates from 200 to 900 t/h (220 to 990 STPH)
Process temperature to +100 ºC (+212 ºF)

SITRANS WF300 Series

SITRANS WF300 Series are low- to medium-capacity flowmeters for various product sizes, densities, and fluidities.

With weighing mechanics located externally, the WF300 Series solids flowmeters are unaffected by corrosive, abrasive, or hot materials.Handling a wide range of product sizes, densities, and fluidities including fine powders such as cement, they operate at process temperatures to +230 °C (+450 °F). The flowmeters help to improve final product, increase operating efficiency, and realize significant cost savings.

Operating with the appropriate SITRANS WFS300 sensing head and a microprocessor-based integrator package, the WF300 Series flowmeters provide a display of the flow rate, totalized flow, and alarms. Outputs are 0/4 to 20 mA proportional to rate, and open collector output for remote totalization.

Dry bulk solids enter the flow guide producing a mechanical deflection as they strike the flowmeter sensing plate before continuing through the process unhindered. The LVDT in the sensing head converts the deflection of the horizontal force into an electrical signal. The integrator processes this signal into a display of flowrate and integrated total weight. The weighing process is immune to the effect of product build-up as only the horizontal force is measured.

WF330 flowmeters are totally enclosed, with external weighing mechanics, operating with corrosive, abrasive or hot materials. The WF350 operates with aerated gravity conveyors, and includes integral vents and baffles for air separation. For applications with little available headroom, the WF340 flowmeters provide the answer.

Typical Application:

WF330 General purpose for most pre-feed applications
WF340 Designed for applications requiring a compact construction
WF350 Suitable for flowrate measurements downstream of an aerated gravity conveyor

Benefits:

For specialized pre-feed applications
Sensing element mounted outside process
Flowrates from 0.2 to 300 t/h (0.2 to 330 STPH)
Process temperature to +232 °C (+450 °F)

SITRANS WFS300 Sensing Heads

SITRANS WFS300 and WFS320 Sensing Heads are out-of-the-process sensing elements for series SITRANS WF300 solids flowmeters.

SITRANS WFS300 and WFS320 Sensing Heads are used in applications such as product ratioing, batch load-out, and process feed rate control, the WFS series of sensing heads has been field proven in thousands of applications with some units providing over a quarter century of reliable performance.

The WFS sensing heads use only the horizontal force created by impact of product upon the sensing plate and then apply the horizontal deflection to a highly reliable Linear Variable Differential Transformer (LVDT).

Friction-less pivots exclude the vertical force from the sensing process and the LVDT travel range is controlled by a coil spring selected for the specified full-scale flow rate. A viscous fluid damper provides mechanical damping in the event of pulsating flows.

The LVDT converts the horizontal movement, proportional to the impact forces into an electrical signal, which is converted by the integrator to time-based flow rate indication and totalling. This method of sensing material flow has been proven best in thousands of applications all over the world.

Model Flowrate

WFS300 Minimum: 0 to 0.2 t/h (0 to 0.2 STPH) till Maximum: 0 to 40 t/h (0 to 44 STPH)
WFS320 Minimum: 0 to 20 t/h (0 to 22 STPH) till Maximum: 0 to 300 t/h (0 to 330 STPH)