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KYOWA DPM-900 Series User Manual

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IM-A-857F January 2018
DYNAMIC STRAIN AMPLIFIER
DPM-900/950 SERIES
INSTRUCTION MANUAL
Copyright © KYOWA ELECTRONIC INSTRUMENTS CO., LTD. All rights reserved.
This Instruction Manual may not be copied or reproduced, in whole or part, without consent of KYOWA.
Generally, company names and trade names described in this Instruction Manual are trademarks or
registered trademarks of the companies.
The contents of the Instruction Manual are subjected to change without prior notice.
For the latest content, please refer to our website.
Thank you for purchasing KYOWAs product DPM-900/950 series Dynamic
Strain Amplifier.
Read this Instruction Manual carefully in order to make full use of the high
performance capabilities of the product.
Do not use the product in methods other than described in this Manual.

Table of Contents

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KYOWA DPM-900 Series Specifications

General IconGeneral
BrandKYOWA
ModelDPM-900 Series
CategoryAmplifier
LanguageEnglish

Summary

Safety and Usage Information

Standard Accessories

Lists all included accessories with quantities.

Safety Precautions and Symbols

Covers essential safety warnings, guidelines, and symbols used in the manual.

Notation Used in Manual

Explains specific words, symbols, and examples for clarity.

Product Outline

Product Outline

Provides an overview of the DPM-900/950 series features and benefits.

System Configuration

Details the general system setup for measurement using the DPM-900/950 series.

Parts and Functions

Front Panel Components

Describes the function of each button, switch, and indicator on the front panel.

Rear Panel Connections

Details the purpose of each connector and switch on the rear panel.

Preparation

Setting Up Input/Output Instruments

Guides on connecting input and output devices for measurement.

Power Connection

Instructions for connecting AC or DC power supply to the unit.

Initial Setting Procedures

Outlines the initial configuration steps and switch settings.

Basic Operation

Input Signal Connection

Explains how to connect strain gages and transducers to the input connector.

Output Signal Connection

Details how to connect external instruments to the output terminals.

Power On/Off Procedures

Provides step-by-step instructions for safely turning the device on and off.

Selecting Operating Modes

Describes how to choose between Normal, TEDS, and ACTL LOAD modes.

Basic Balancing

Explains the electronic balancing process for accurate measurements.

Setting Internal Gain

Guides on setting the internal gain for accurate strain measurement.

Setting Low-pass Filter

Explains how to configure the low-pass filter for signal conditioning.

Setting High-pass Filter

Details how to enable or disable the high-pass filter for DC component removal.

Zero Point Fine Adjustment

Guides on fine-tuning the zero point of the output signals.

Sensitivity Fine Adjustment

Explains how to fine-tune the device's sensitivity.

Functions

Input Functions

Describes the input capabilities and supported sensors for strain measurement.

Output Functions

Explains the characteristics of the two independent output systems.

Preheating Requirement

Details the necessary preheating time for stable measurement.

Bridge Check Function

Explains how to check for wire breaks in the input system.

Balancing Functions

Covers balancing range and the balancing procedure.

Moving Zero Point

Describes the function to remove the zero point of output signals.

Internal Gain Setting Methods

Details methods for setting internal gain using CAL, TEDS, or ACTL LOAD.

Low-Pass Filter (LPF)

Explains the LPF characteristics and its roles in signal processing.

Calibration Signal Usage

Details how to use the calibration signal for strain measurement.

Key-Lock Functionality

Describes how to use the key-lock feature to prevent parameter changes.

OSC Synchronization

Explains how to synchronize multiple units for simultaneous measurement.

Centralized Connector Application

Details the use of the centralized connector for power and signals.

Remote Control Functions

Lists functions that can be controlled remotely.

Options

Bridge Box Options

Details the functions and models of bridge boxes for strain gage configurations.

Amplifier Stand

Describes the rubber stand used for fixing a single unit.

Extension Cables

Lists available extension cables for remote measurements.

Noise Filter F

Explains how the filter reduces external high-frequency noise.

Exclusive Carrying Case

Details the models and features of carrying cases for multichannel measurements.

Carrying Case Functions

Lists functions like batch balance, calibration, and OSC sync for carrying cases.

Synchronization Between Carrying Cases

Instructions for carrier synchronization between multiple carrying cases.

Trouble Shooting

Unit Cannot Be Turned On

Remedies for issues where the unit does not power on, including fuse checks.

Initial Balancing Impossible

Troubleshooting steps when balancing fails, checking the bridge and sensors.

No Output Available

Solutions for when the monitor shows no output or input issues.

Zero Point Instability

Addresses issues with unstable zero points, checking preheating and compensation.

Large Noise Issues

Troubleshooting steps for excessive noise from interference or electric potential.

Error Indications and Remedies

Details various error codes and their corresponding solutions.

Specifications

Technical Specifications Overview

Comprehensive list of electrical and performance specifications for different models.

S/N Ratio and Output Characteristics

Details signal-to-noise ratio and output voltage specifications.

Block Diagram and Operation Principle

Illustrates the internal circuitry and explains the signal processing principles.

Dimensional Drawings

Provides physical dimensions and mounting information for the unit.

Appendixes

Bridge Check Error Indications

Table relating wire-breaking locations to specific error codes.

Low-Pass Filter Characteristics

Graphs showing amplitude and phase response of the LPF.

Response Frequency Characteristics

Graphs illustrating frequency response for different models.

Calculating Strains and Stress

Methods and formulas for calculating strain and stress from waveforms.

Correction for Strain Gage Usage

Explains corrections needed based on the number of strain gages used.

Correction for Extension Cable Use

Provides correction factors for measurements using extension cables.

Troubleshooting Error Codes

Comprehensive table of error codes, status, and remedies.

Input Connector E Terminal Usage

Details the connection and grounding for the E terminal.

Glossary

Technical Term Definitions

Provides definitions for key terms and acronyms used in the manual.

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