The model HB-888 weigh feeders are designed for continuous of a weigh feeding system. Which will control and monitor the flow rate of bulk materials, such as minerals, chemicals, grains, plastic powders or a variety of other bulk materials.
The HB-888 will handle them reliably, in harsh application environments, feeding accurately from 1kg/hr to 50,000kg/hr and more.

• Totally enclosed stainless steel construction.
• Easy access and disassembly.
• Cantilevered frame design allows the conveyor module or belt to be completely removed in minutes without the need for tools.
• Enclosed no maintenance cog belt direct drive AC gear motor. A no maintenance cog belt drive ensures reliable and accurate conveyor movement without need for lubrication or adjustment.
• Automatic Belt Tensioner insures a constant belt tension at all times, even under changing loads or temperature.
• Sealed bearings for long life and maintenance free.
• Quick removal side guards.
• Belt tracking run-off limit switches.
• Sealed junction box.
• High quality finish, the surface finish is equal to 2 B.
• Enclosed belt speed sensor.
• 2 blade scrapers 304 SS material at belt discharge, return side belt and tail pulley.
• The weight feeders can be suspended or floor mounted.
• All weight feeders have a shock mounts design.
• Manually adjusted 304 SS material shear gate.
• 304 SS material feed cut-off gate.

Holbright has designed a precision weigh feeder system to continuously and repeatable measure weight and belt speed, calculate rate and compare it to set point, providing or monitoring. Flow rate with an accuracy up to 0.25%-1% of set rate at two sigma.

The weigh feeders are designed by heavy duty construction. With considerable fewer moving parts to ensured trouble free operation and lower maintenance. Constructed primarily of stainless steel, feeder components are designed and manufactured to meet the regions of a harsh industrial environment demanding requirement.

Holbright designed a self contained, precise weighing module for use in repeated shock loading where fast weighing and setting times are required.

• The weighing module is equipped with built-in over load limit stops in three direction which provides positive (push), negative (pull) and twisting loads.
• The weighing module is designed specifically for process industry environments. The system of fers reliability high accuracy, durability and is less apt to fail than other complicated system.

There are many different proportioning systems where continuous weighing equipment can be used. Some examples of these systems are:

• Single unit proportioning.
• Wild flow ratio control-solid additive.
• Wild flow ratio control-liquid additive.
• Multi-unit master slave control.
• Multi-unit percentage proportioning control.
• Multi-unit digital control with memory.
• Multi-unit digital control with pacing.

• Charge Hopper
  Select from the following 3 type. (Available in capacity rating, too.)
  50 L: Mounts directly on the Belt Weighing Feeder.
  100 L/200L: Supported so that its weight is not applied to the inlet of the Belt Weighing Feeder.
• Level Detectors (Installed on the charge hopper)
  It can be selected by high lever detectors which type of paddle, vibratory or electrostatic.
  It can be selected by low lever detectors which type of paddle, vibratory or electrostatic.
  
• Inlet Slide Gate
  Installed on the lower end of the charge hopper. Closing the inlet slide gate enable you to adjust the Belt Weighing Feeder while the bulk material is still in the charge hopper.
• Vibrators
  Breaking arching (Bridging) device for difficult handle materials.
• Inlet Flexible Joint
  Flexibly connects the upper units and the Belt Weighing Feeder's inlet.
• Sample Valve
  Available in a variety of configurations. 304 stainless steel sanitary construction.