- MERRICK is the inventor of the weigh belt feeder and has
been supplying models for world wide industries since the
1920’s. However, due to the stringent demands of water
and wastewater treatment, the Model 960 designs started
with a blank sheet in the early 1990’s. Because of chemical
metering problems unique to the water industry, special
features were required for reliability, long life, low maintenance
and simplicity. With the suggestions of water plant
operators and maintenance personnel, along with over
100 years of MERRICK’s chemical metering experience, the
Model 960 feeders were developed. Model 960 feeder designs are available for most water and
waste water metering applications. The most common application for Model 960 feeders is to meter pebble lime into
Slakers. The compact length and wide range of capacities
permit them to be used on slakers from 400 to 10,000 Lbs/
Hr. All models are available for either gravimetric or volumetric
applications.
All Model 960 models are available for either gravimetric or volumetric applications. All versions are supplied standard with the MERRICK XTRA DC motor controller. Gravimetric versions are supplied with the Genetix touchscreen microprocessor controller. This advanced controller is operator friendly with all functions activated by a graphical touch screen interface. Built-in diagnostics provide maintenance personnel quick resolution to any alarm or malfunction. Volumetric models are accurate to ±1% by volume and ±3% by weight. Gravimetric models are accurate to ±1% of set rate and ±0.5% totalized weight.
GRAVIMETRIC BELT FEEDER APPLICATION
The Model 960G is a general purpose belt feeder designed to gravimetrically meter chemicals into a process at an adjustable feedrate. The feeder belt speed is varied automatically to meter material into a process at a desired set point. Belt speed is determined by a MERRICK Genetix process controller by integrating the belt load with the belt speed. A gravimetric feeder is used for closed-loop process control.
VOLUMETRIC BELT FEEDER APPLICATION
The Model 960V is a general purpose belt feeder designed to volumetrically meter chemicals into a process at an adjustable feedrate from 0-100%. Volumetric feedrate is achieved by varying the speed of the belt with a DC motor controller. The rate of speed can be adjusted either locally or remotely. In local mode, belt speed is set via a 0-100% potentiometer. In remote mode, the belt speed is set via a 4-20 mA signal isolator.
STANDARD CONTROLS
- MERRICK XTRA Variable Speed DC Motor Controller, PWM Rated – Shipped Separate for Customer Installation
- Genetix Process Controller with Graphical, Touch Screen Operator Interface
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