SJ101A/B High-Precision Weighing Transmitter Specification

Model: SJ101A/B  | Category: High-Precision Dual-Interface Weighing Transmitter

Product Overview

The SJ101A/B series High-Precision Weighing Transmitter is a flagship signal conversion device designed for industrial precision measurement. It features a dual-interface (RS485/RS232) freely switchable design, compatibility with multiple industrial protocols, and is equipped with a high-precision AD sampling chip capable of milligram-level resolution measurement. Paired with a bright 6-digit LED display, it is suitable for industrial and laboratory scenarios with stringent requirements for accuracy, compatibility, and field visibility.

Core Advantages: Dual-interface free switching for flexible application; Multi-protocol compatibility breaking system barriers; Ultra-high precision meeting milligram-level measurement; LED digital tube display clearly visible under strong light.

Technical Specifications

Structure & Features

• Dual Interface Flexibility: Supports RS485 and RS232 interfaces with on-demand switching

• Multi-Protocol Compatibility: Built-in MODBUS-RTU, custom ASCII protocol, and Yaohua A7/A12 protocols

• Ultra-High Precision: Equipped with a high-precision AD sampling chip, achieving milligram-level resolution (0.001g)

• 6-digit LED Display: Clear readout with adjustable brightness (can be turned off), visible in strong light environments

Core Parameters

Interface Specifications

Communication Interfaces:

RS485 RS232

Physical Dimensions: 100mm x 94mm x 8mm (L x W x H)

Sensor Wiring Definition

• E+: Excitation voltage positive

• E-: Excitation voltage negative

• S+: Signal feedback positive

• S-: Signal feedback negative

• Sh: Shield wire

Protocol Support

Function Features

Display & Interaction

• 6-digit bright red LED digital tube for clear readout

• Multi-level adjustable brightness for different lighting environments

• Supports displaying weight, unit, and status information

Industrial Performance

• Ultra-high precision AD chip, stable and reliable

• Dual isolation design with strong anti-interference capability

• Wide voltage input, adapts to complex industrial power grids

Flexible Configuration

• Interface, protocol, and filter parameters configurable via buttons or software

• Supports weighing functions like zero tracking, tare, preset points, etc.

Application Scenarios

• Laboratory precision balances and instruments

• High-precision batching systems in pharmaceutical and chemical industries

• Precious metal processing and jewelry weighing

• Industrial production lines requiring high precision and integration with multiple control systems

• Replacing or upgrading old Yaohua weighing instruments

Customization Services

Qingsi Electronic Technology Co., Ltd. provides in-depth customization services based on your specific requirements:

• Custom specific communication protocols and data formats

• Adjust parameters like excitation voltage and sampling rate for special sensors

• Customize enclosure dimensions, color, and mounting method

• Develop dedicated function firmware for specific industry applications

Qingsi Electronic Technology Co., Ltd. All technical specifications subject to change without notice.

For inquiries and technical support: Manager Chen | Tel: +86 15106111829