Riken Keiki SD-3 Series User Manual (English)

Other manuals for Riken Keiki SD-3 Series

Technical Manual177 pages

Operating Manual114 pages

Questions and Answers:

F
Felicia HurleyAug 5, 2025
What to do if Riken Keiki Gas Detectors reading rises and remains unchanged?
- N
  nicolefosterAug 5, 2025
  If the reading rises (or drops) and remains unchanged, and a gas alarm is triggered despite the absence of a gas leak, it might be due to sensor zero or span drift. Try performing zero calibration or span adjustment. It could also be caused by interference gases; check for these and take appropriate action. Slow leakage of the target gas may also be the cause, so take the same action as for gas alarms. Environmental fluctuations or noise effects can also cause this issue. In such cases, turn off the power and restart. If similar symptoms recur frequently, take appropriate measures to address the noise source.
O
owensmeredithAug 10, 2025
How to fix Riken Keiki Gas Detectors when the power cannot be turned on?
- J
  Jennifer LopezAug 10, 2025
  If the power cannot be turned on, the wires might be incorrectly connected or detached from the terminal plate; wire or connect them correctly. Abnormalities or instantaneous interruptions in the power supply circuit could also be the reason; confirm that the rated voltage is supplied and consider using an uninterruptible power system, power supply line filter, or insulated transformer. Check for cable abnormalities like disconnection, or short circuit by checking the wiring for the product and peripheral devices. If the fuse is blown, replacement is required, so contact Riken Keiki. If there is an internal circuit abnormality, replacement is required, so contact Riken Keiki.
A
Amanda MillerAug 16, 2025
What to do if Riken Keiki Gas Detectors show sensor abnormality (E-1)?
- B
  Benjamin MorganAug 16, 2025
  If your Riken Keiki Gas Detectors display a sensor abnormality (E-1), the sensor might not be connected properly. Turn off the power and check the sensor connection. A sensor fault could also be the cause, in which case you should replace it with a new sensor. Effects of sudden surge noise can also trigger this error; turn off the power and restart. If similar symptoms recur frequently, take appropriate measures to address the noise source. Incorrect internal wiring of the main unit (SD-3/ SD-3SC) or remote sensor head (GD-3) could also be responsible; connect the internal wiring correctly.
S
Stephanie MurphyAug 22, 2025
What to do if Riken Keiki Gas Detectors show clock abnormality?
- D
  David ThomasAug 22, 2025
  Set the date and time. Correction may not function correctly if the EC sensitivity correction function is enabled. If similar symptoms recur frequently, the internal clock may be defective. Replace with a new internal clock. Contact Riken Keiki.
M
Mary AlexanderAug 28, 2025
What to do when the sensor is approaching the end of its service life in Riken Keiki Gas Detectors?
- J
  Joshua JohnsonAug 29, 2025
  We recommend sensor replacement. Contact Riken Keiki.

Riken Keiki SD-3 Series Specifications

General

Brand	Riken Keiki
Model	SD-3 Series
Category	Gas Detectors
Language	English

Summary

Product Overview

Introduction and Features

Overview of the manual, product's intended use, features, and usage conditions.

Usage Zones and Conditions

Guidelines for where and under what conditions the product can be used.

Important Safety Information

Danger, Warning, and Caution Information

Details critical hazards, potential injuries, and precautions for safe operation.

General Safety Information

General safety guidelines and important considerations for safe operation.

Screw Hole Specifications

Details on screw types and sizes for external entries on SD-3 and GD-3 units.

Product Configuration

Main Unit and Accessories

Overview of main unit models and associated accessories, including optional items.

Part Names and Functions

Identifies and explains the function of each part of the device.

Block Diagrams

Presents electrical circuit diagrams illustrating product functionality.

Installation

Installation Precautions

Essential guidelines and warnings before installing the product, including cable and power considerations.

System Design and Component Installation

Precautions for system design, and installation of main units, sensors, grounding, and splash guards.

Usage Instructions

Product Usage Guidelines

General guidance on how to use the product, referring to the technical manual.

Alarm Activation

Gas Alarm Activation and Response

Procedures for gas alarm activation, response, and contact operations.

Fault and Warning Operations

How the product indicates and signals fault, warning conditions, and their responses.

Functions for Alarm Reliability

Features like zero suppression and sensor recognition that ensure correct alarm activation.

Maintenance

Maintenance Intervals and Items

Schedules and tasks for routine product maintenance, including checks and calibration.

Maintenance Modes and Tests

Procedures for entering maintenance mode and performing diagnostic tests.

Calibration Procedures

Steps and requirements for calibrating the product's sensors, including gas types and adapters.

Parts Replacement

Procedures for replacing sensors and other periodic replacement parts.

Storage, Relocation, and Disposal

Storage Procedures

Guidelines for storing the product under specified temperature, humidity, and pressure conditions.

Relocation, Reuse, and Disposal

Instructions on how to relocate, reuse, and properly dispose of the product.

Troubleshooting

Product Abnormalities

Common issues, causes, and actions for product malfunctions like power and operation errors.

Reading Abnormalities

Troubleshooting steps for inaccurate or unexpected sensor readings and system errors.

Product Specifications

SD-3 Specifications

Detailed technical specifications for the SD-3 model, including electrical data and explosion-proof class.

SD-3SC + GD-3 Specifications

Technical specifications for the SD-3SC + GD-3 combined system, including dimensions and weight.

Detection Target Gases

Lists target gases and their specifications for various detection principles (IR, ceramic, electrochemical).

Appendix

Detection Principle

Explanation of the underlying principles used for gas detection.

Sensor Specifications

Detailed specifications for IR, combustible gas, and EC sensors, including operating ranges.

Calibration Curves

Graphical representation of sensor response to gas concentrations for IRF and NCF sensors.

Terminology

Glossary of terms used in the manual.

Warranty and Revision History

Information regarding product and sensor warranties, and records of manual revisions.

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Riken Keiki SD-3 Series User Manual

Table of Contents