GET A QUOTE
Get a Quote

JD-8

Weighing Instruments

Home / Products / Instrumentation / JD-8

JD-8

Jumbo Display

Download Datasheet

The Jumbo Display JD-8 series, manufactured by Analog & Digital Instrumentation (ADI Controls), is designed to provide high-visibility weight or process data monitoring from long distances in expansive industrial environments. These large-format indicators act as remote secondary displays that interface directly with primary controllers or weighing systems to ensure that critical information is accessible to operators and floor personnel across the worksite.

Request For Call Back
Send Inquiry

Product Type

Single Point Aluminium Load Cell

Usage

Table top scales, Counting and postal scales, Check weighers.

Material

Aluminium

Output

 Analog Sensor

Theory

Resistance Sensor

Compensated Temperature

10 To 60 Celsius (oC)

  • The Jumbo Display JD-8 is designed for high-visibility remote weight display in heavy-duty industrial weighing applications.
  • Weighbridges: Displaying truck weights to drivers from a distance
  • Silo & Tank Weighing: Monitoring material levels in large outdoor storage vessels
  • Crane Systems: Providing floor-level visibility for overhead load monitoring to enhance safety
  • Batching Plants: Synchronizing weight data across multiple stations in a production line
High-Visibility Display

Features large-format red LED digits—typically ranging from 8 inch in height—to ensure readability in bright sunlight or dimly lit factory floors

Connectivity
Utilizes the RS485 MODBUS RTU protocol to fetch real-time data from primary load cell controllers like the LC-50K or LC-60K
Input Options
Supports both digital (RS485/RS232) and analog (4-20mA or 0-10V DC) signals depending on the specific model configuration
Rugged Construction
Often housed in heavy-duty MS or weather-proof enclosures to withstand harsh industrial conditions
Protection Ratings
Built to meet various environmental standards, often featuring IP-55 or higher ratings for protection against dust and moisture
  • Compact Size
  • Aluminum Construction
  • Custom Design as per Application

Industries

EOT Crane Industries
Learn More

Related Products

FAQs

frequently asked questions

01. What is the fundamental role of a Load Indicator in a weighing system?

A Load Indicator (or Digital Weight Indicator) is the primary user interface and digital core of the weighing system. Its main roles are:

  • > Power Supply: It provides the stable excitation voltage (power) to the load cell.
  • > Signal Conversion: It receives the raw, micro-voltage (mV) signal from the load cell, amplifies it, and converts it into a digital value.
  • > Display: It displays the final calculated weight in a readable format (kg, T, N) to the operator.
  • > Calibration: It stores the system’s calibration parameters (zero, span, decimal points, capacity).
  • > Communication: It communicates with devices such as HMI, PLC, PC, other devices via modbus RTU RS-485.
02. How does a Load Controller differ from a basic Load Indicator?

A Load Controller (or Process Controller) is essentially an indicator with additional control functionality used in automation:

  • > Indicator: It performs all the basic functions of a standard indicator (display, power, signal conversion).
  • > Control Logic: It contains built-in software or programming for specific applications like batching, filling, mixing, or checkweighing.
  • > Outputs: It features discrete I/O (Input/Output) relays or ports that can be used to control external devices (e.g., stopping a conveyor, opening a valve, or triggering an alarm) based on weight set points.
03. What is a Load Cell Amplifier (or Transmitter), and when is it necessary?

A Load Cell Amplifier (or Transmitter) is a specialized device used to prepare the load cell signal for communication with industrial controllers like PLCs (Programmable Logic Controllers).6

  • > Function: It takes the tiny mV signal and converts it into a standard, robust industrial signal, most commonly 4-20mA or 0-10VDC.
  • > Necessity: Standard industrial controllers (PLCs) cannot directly read the load cell’s raw mVoutput. The amplifier makes the signal less susceptible to electrical noise and voltage drop over long distances, ensuring the PLC receives an accurate, proportional weight reading.
04. Why is the 4-20mA signal commonly preferred in industrial applications?

The 4-20mA current loop is the most robust standard for transmitting analog signals in harsh industrial environments for two key reasons:

  • > Noise Immunity: Current signals are far less susceptible to electromagnetic interference (noise) over long cable runs than voltage signals.
  • > Live Zero: The 4mA value represents the zero output (unloaded state). If the signal drops to 0mA (or close to it), the system immediately detects a broken wire or power failure, providing a built-in error detection mechanism.
05. How do multiple load cells connect to a single indicator/controller?

When a system uses multiple load cells (e.g., a four-load cell tank system), they are connected using a Junction Box (J-Box).

  1. Wiring: The cables from all individual load cells run into the J-Box.
  2. Trimming: The J-Box contains terminal blocks and typically trimming resistors to electronically adjust the output of each load cell (called corner trimming or balance adjustment).
  3. Summation: The signals are electrically summed together within the J-Box.
  4. Single Output: A single main cable then runs from the J-Box to the Indicator or Controller, providing one combined weight signal.