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Bongshin BS-105 - User Manual

Bongshin BS-105
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BS-105
Digital Indicator
The Better Way for Weighing &
Measurements

Questions and Answers

  • M
    Margaret WongAug 3, 2025
    What to do if my Bongshin BS-105 shows 'Excess Max weight'?
    • E
      Ethan CameronAug 4, 2025
      If your Bongshin Measuring Instruments display indicates 'Excess Max weight', remove the excess weight from the instrument.
  • D
    Dawn CollierAug 9, 2025
    Why is my Bongshin BS-105 Measuring Instruments changing weight values or not returning to zero?
    • S
      Stephanie BellAug 10, 2025
      If your Bongshin Measuring Instruments' weight value is changing or not returning to zero, it could be due to load cell damage. Check the insulation resistance value of the load cell; a normal reading is typically a maximum of 100MΩ, or it may display -OL-. Another potential cause is a disconnection in the load cell. Confirm the load cell connection and inspect the individual wires of the load cell cable.
  • M
    mckinneydavidAug 16, 2025
    How to fix waving weight value on Bongshin Measuring Instruments?
    • K
      Kevin KimAug 16, 2025
      If the weight value on your Bongshin Measuring Instruments is fluctuating, it could be due to: * Load cell damage: Check the input and output of the load cell for resistance value. * Poor insulation resistance of the load cell: Check the insulation resistance value of the load cell. * Weighing part error.
  • C
    Carol LambAug 21, 2025
    What to do if Bongshin BS-105 displays 'Ovr' or '-Ovr'?
    • N
      njohnsonAug 21, 2025
      If 'Ovr' or '-Ovr' appears on your Bongshin Measuring Instruments display, it could be due to load cell damage or a connection error. Inspect the load cell connector.
  • R
    Ruth KingAug 27, 2025
    Why is the weight negative on my Bongshin Measuring Instruments?
    • C
      Charles MaldonadoAug 27, 2025
      If the weight on your Bongshin Measuring Instruments has changed to a negative value, it's likely due to the load cell output (SIG+, SIG-) being changed. Check the load cell connector.

Summary

Introduction

2. Precautions

Important safety and operational guidelines for using the indicator.

Technical Specification

1. Analog Input & A;D Conversion

Details analog signal range, resolution, sensitivity, and drift.

Technical Details and Options

Keyboard Operation

Rear Panel Connections

Load Cell Connection

Pin Assignments and Wire Colors

Maps pin numbers to signal names and lists wire colors from different manufacturers.

Load Cell Cautions

Provides important warnings regarding sensor connection and voltage.

Input Control Signals

Relay Output Signals

COM, HI, OK, LO Output Terminals

Details common terminal and output terminals for relay signals.

Optional Interfaces

Calibration Data Settings

Load Cell Rated Output

Sets the rated output value (mV/V) for the strain gauge sensor.

Maximum Capacity Set

Sets the indicated value when the rated output is finalized.

Span Weight Set

Sets the indicated value by applying actual load to the sensor.

Serial Interface Condition Data

Zero Calibration

Setting Zero Method

Describes how to set zero using front panel keys or terminal control.

Actual Load Calibration

Equivalent Calibration

Comparator Data and Relay Settings

Output Specifications

Defines conditions for comparison (HI, OK, LO) and judgment results.

Setting Comparator Data

Relay Mode Configurations

r1 H.on Mode

Describes HI ON relay motion mode where load within limits activates relay ON.

r1 L.on Mode

Describes LO ON relay motion mode where load within limits activates relay OFF.

r1 r.on Mode

Describes Range mode where load within limits activates relay ON.

Relay Motion Modes

HI ON Relay Motion

Details the HI ON mode (r1H.on, r2H.on, r3H.on) for relays.

Relay Motion Modes (Continued)

LO ON Relay Motion

Details the LO ON mode (r1L.on, r2L.on, r3L.on) for relays.

Range ON Relay Motion

Details the Range ON mode (r1r.on, r2r.on, r3r.on) for relays.

Comparator Weighing Modes

Comparator Weighing Modes

Details modes like L1 LO ON, L2 Range, L3 HI ON.

Hold Function

Hold Function Operation

Key Lock Function

Serial Interface Options

RS-232 C Serial Interface

Details the RS-232C serial interface option.

RS-422;485 Serial Interface

RS-422 Serial Output

Details pin assignments and descriptions for RS-422 serial output.

Analog Output - Voltage

Analog Output - Current

Error Messages and Troubleshooting

Bongshin BS-105 Specifications

General IconGeneral
BrandBongshin
ModelBS-105
CategoryMeasuring Instruments
LanguageEnglish

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