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Summary of Contents for Riken Keiki SD-1D
- Page 1 PT2E-3030 Smart transmitter/ Gas Detector Head SD-1D （TYPE GP MED EX） Operating Manual (PT2E-161)
- Page 2 Operating Precautions This detector is a gas detector that detects combustible gases in the air and triggers a gas alarm. The gas detector is a safety unit, not an analyzer or densitometer which performs quantitative/qualitative analysis/measurement for gases. Please fully understand the following points before using it, so that it can be used properly. This detector may be interfered by gases and vapors other than the gas to be detected.
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Page 3: Table Of Contents
<Contents> 1 Outline of the Product ......................2 1-1. Preface ..........................2 1-2. Purpose of use ........................ 2 1-3. Definition of DANGER, WARNING, CAUTION, and NOTE ..........2 1-4. Method of confirmation for Standards and Explosion proof specification ......3 2 Important Notices on Safety .................... -
Page 4: Outline Of The Product
Outline of the Product 1-1. Preface Thank you for choosing our smart transmitter/gas detector head SD-1D(TYPE GP MED EX). Please check that the model number of the product you purchased is included in the specifications on this manual. This manual explains how to use the detector and its specifications. It contains information required for using the detector properly. -
Page 12: Product Components
3 Product Components 3-3. Block diagram 3-3. Block diagram <Electric Diagram> Power supply part POWER INPUT (24 VDC) Display (POWER) (ALARM) (FAULT) Alarm contact controller Seven-segment LED Controller 1. Gas alarm contact (ALARM) (four-digit) (CPU) 2. Fault contact (FAULT) Magnetic operation part 3. -
Page 15: How To Use
4 How to Use 4-3. Precautions for system designing please contact the manufacturer.) In addition to lightning, there are more sources of surge noise. To protect units Grounding from these noise sources, the units must be grounded. * The lightning arrester has a circuit to remove a surge voltage which damages field devices, so that signals may be attenuated. -
Page 29: Operations And Functions
6 Operations and Functions 6-1. Gas alarm activation Operations and Functions 6-1. Gas alarm activation Gas alarm: Activated when the concentration of detected gas reaches or exceeds the alarm setpoint value. <<Auto-Reset>> NOTE The alarm setpoint is factory-set. Although the alarm delay time (standard: 2 seconds) works in the detector to prevent a false activation, it can be cancelled if not needed. -
Page 30: Fault Alarm Activation
6 Operations and Functions 6-2. Fault alarm activation <Response to Gas Alarm> A gas concentration value exceeds the alarm setpoint When a gas alarm is triggered, take actions in accordance with your management rules of gas alarm. Normally, take the following actions. ... -
Page 33: Maintenance
7 Maintenance 7-1. Maintenance intervals and items Maintenance This is an important instrument for the purpose of safety. To maintain the performance of the detector and improve the reliability of safety, perform a regular maintenance. 7-1. Maintenance intervals and items ... - Page 34 7 Maintenance 7-1. Maintenance intervals and items Main Services Power Supply Checks the power supply voltage. Check Verifies that the power lamp lights up. (Verifies that relevant points can be identified on the system.) (When a UPS (uninterruptible power system) is used, checks the operation with the UPS (uninterruptible power system).) Concentration Verifies that the concentration display value is zero (or 20.9 vol% on the oxygen deficiency...
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Page 45: Gas Calibration Method
7 Maintenance 7-3. Gas calibration method NOTE If the span adjustment failed since the reading was significantly fluctuated from the introduced gas concentration, it returns to 2-2 after FAIL rather than PASS is displayed . In this case, the span adjustment has not been completed. -
Page 47: Parts Replacement
7 Maintenance 7-4. Parts replacement <Replacement of Regular Replacement Parts> List of recommended regular replacement parts Maintenance Replacement Quantity Item intervals intervals (year) (pieces/unit) Rubber seal 6 months 3 - 8 years (for the sensor) Aspirator cap 6 months 3 - 8 years NOTE ... -
Page 49: Troubleshooting
9 Troubleshooting 9 Troubleshooting Troubleshooting The troubleshooting does not explain the causes of all the malfunctions which occur on the detector. This simply helps to find the causes of malfunctions which frequently occur. If the detector shows a symptom which is not explained in this manual, or still has malfunctions even though remedial actions are taken, please contact our overseas sales department or local representatives. - Page 50 9 Troubleshooting 9 Troubleshooting <Abnormalities of Readings> Symptoms Causes Actions Drifting of sensor Perform the zero adjustment. output Disturbances by interference gases, such as solvents, cannot be eliminated completely. Presence of For information on actions, such as removal filter, please interference gas contact our overseas sales department or local The reading rises...
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Page 51: Product Specifications
10 Product Specifications 10-1. List of specifications Product Specifications 10-1. List of specifications Model SD-1D Type TYPE GP MED EX Detection principle Catalytic combustion type Gas to be detected Methane Concentration display Seven-segment LED (four-digit) Detection range 0 - 100% LEL Display resolution 0.5% LEL... -
Page 54: List Of Accessories
10 Product Specifications 10-2. List of accessories 10-2. List of accessories Operating manual ......one Dedicated handling lever ....one Dedicated control key ....The supplied quantity depends on the number of units to be delivered. 1 to 10 units 11 to 20 units 21 to 50 units three... -
Page 55: Definition Of Terms
11 Definition of Terms 11 Definition of Terms Definition of Terms Catalytic This is a principle of the sensor installed in the detector head. combustion type See "10-3. Detection principle" for details. Output from the detector head fluctuates for a while after turning on the power. Initial clear This is a function to prevent triggering alarm during that time. - Page 56 Revision History Edition Revision Date issued First edition 1/6/2021...
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