Thayer Scale develops, designs, and manufactures the industry’s most powerful and accurate weigh feeding instrumentation. All of our instrumentation is dedicated to weigh feeding and tailored to our customers’ exacting needs. Thayer Scale’s proprietary algorithms provide functions such as disturbance limiting, positional transformation of the weight signal, output linearization, and other critical weighing functions.

We continually draw upon our company’s seventy years of industry experience to develop innovative and flexible control features and belt routines. Our solutions serve our customers’ unique processing demands and improve their production requirements.

Common control features include:

A complete selection of user-configurable engineering weight, time, and distance units

Automated calibrations and extensive auto-zeroing functionality to support:

  • Feeder operation audits
  • Systemic diagnosis and assessment for certified and higher-accuracy belt scale and weigh belt systems

Full-text display messaging

Dynamic programming and tuning

Real-time diagnostics

Input/output configuration and management

Multiple operator interfaces

Scale calibration histories and critical event logging

A large selection of industrial communication protocols

Simple English-language prompts to guide operators through calibrations and procedures

Our conveyor belt routines include:

Input and output scale location compensation

In-phase blending

Output resume

Dual preset counters with configurable I/O to facilitate batching applications

Pre-feed control output compensation, control sample, and hold

Belt tracking alarming and shutdown

Loss-in-weight routines include:

Input scale location compensation

In-phase blending, output, resume, and compensation

Real-time volumetric control

Measurement limiting

Disturbance, agitation, and comprehensive refill control

A complete line of AC, DC, and electromagnetic motor controllers complements our instrumentation. Our motor controllers integrate easily into any of our weigh systems. We offer local or remote hands-off-automatic controls, adaptable start/stop logic, emergency stop input, system interlock inputs, and status outputs. To simplify installation, our motor controls include branch circuit protection, disconnects, logic controls, and one common field breakout terminal. All have the same internal and external control functionality, making them economical and easy to install, learn, and maintain. All instrumentation is UL- and cUL-approved.

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Instrumentation Upgrade

Improve your process reliability and efficiency while lowering your operating and maintenance costs with Thayer Scale’s innovative Model Series 5200 and Model S52 family of gravimetric feeder and conveyor belt scale instrumentation. These powerful and intuitive instrument packages offer high-performance, ultra-fast execution time, and seamless integration to your host supervisory control system, providing you with a unique portal to better help you monitor, control, and understand your critical processes.

S52c Weigh Feeder Controller

The S52c weigh belt and Loss-In-Weight controller enables easy set-up, calibration and maintenance.

Its intuitive menu interface is very easy to use. Step-by-step on-screen instructions guide the user through set up, calibration and customization of inputs and outputs. Multiple checks and balances built into the software virtually eliminates human error.

  • Weigh Belt Controller
  • Loss-In-Weight Feeder Controller
  • Batch Controller
  • Strain Gauge and LVDT Load Cells

S52i Weigh Belt & Belt Scale Integrator

THAYER’s S52i is a compact, cost effective belt scale integrator. Advanced microprocessor based technology is used to process both weight and speed signals and output accurate and stable reading of flow rate and totalize weight of bulk solid materials. The S52i integrator is compatible all THAYER non-commercial Belt Scales and Weigh belt scales. As a retrofit, the unit will work with any single or dual load cell based weigh-bridge.

  • Conveyor Belt Scale Integrator
  • Weigh Belt Integrator
  • Strain Gauge and LVDT Load Cells

Series 5200 Controller

For applications that require an elevated level of flexibility over elementary weighing indicators, the SERIES 5200 is simply the fastest and most affordable fully featured weight indicator and controller on the market today. Because of its many options, the SERIES 5200 offers the appropriate solution to various weighing tasks, commercial for trade belt scales, Loss-In-Weight Feeders, Weigh Belt Feeders , and batching . Furthermore it provides statistical information, data processing and data transfer.

  • Conveyor Belt Scale Integrator
  • Weigh Belt Integrator & Controller
  • Loss-In-Weight Feeder Controller
  • Batch Controller
  • Strain Gauge and LVDT Load Cells

i340 Belt Scale Integrator

  • Quarry King Conveyor Belt Scale Integrator
  • Strain Gauge Load Cell

Thayer Scale’s new Model i340 Conveyor Belt Scale Integrator is a full featured instrument specifically designed to match with Thayer’s single idler “Quarry King” Belt Scale. It performs the same functions as an instrument costing many times more without sacrificing accuracy that is associated with THAYER weighing products.

TS-520 Multi-Instrument Monitor

Multi-Instrument Monitor for all THAYER weigh scales

The TS-520 Operator Interface Terminal is a graphic touch screen panel that is capable of supporting up to twelve (12) THAYER weigh feeders. Feeder data is graphically displayed and includes historical trends, statistical control, diagnostics, help, and much more.

Auditor NTEP Certified Belt Scale Monitor

THAYER AUDiTOR™ is a PC-based data collection and software package running on an industrial PC (IPC). It provides a link between a plant and the Series 5200 NTEP approved secure in integrator. It has been designed to meet the requirements of NTEP, AAR, and HB-44 for rate trending and printing of deliveries with date and time stamping.

The Bridge Breaker® & Flow Promotion Device Controller

The Bridge Breaker® Controller (BBC) is a self-contained unit capable of operating a variety of Flow Aid devices (FADs) for the purpose of insuring material flow thru hoppers, silos chutes or vessel. It can control various devices such as Thayer’s The Bridge Breaker®, vibrators, Air Cannons, Air Pads, etc. or combinations thereof.

Customer Control Panels and Explosion Proof Instrumentation

Thayer Scale has continually developed our in-house capabilities for control panel fabrication.The fabricated assemblies are conceived for use with our weighing and volumetric feeders and can be customized to include ancillary equipment as well. These panels are ready for you to adapt to your specific application by providing finalized wiring diagrams, connecting your field wiring, programming and commissioning. Thayer Scale has satisfied numerous customers with design and fabrication of custom electrical and instrumentation panels and control consoles.

SCR/DC Variable Speed Motor Drives

The controller is designed to be integrated into a drive package selected and wired by the user. As such, it may be necessary to provide either a number of required operator’s controls or equivalent relay contacts.

The control functions are:

  • Speed adjust or torque control potentiometer
  • Start pushbutton switch, or relay contact
  • Stop pushbutton switch, or relay contact
  • Forward/Reverse switch