Riken Keiki SD-1DRI User manual

PT2E-1969
Smart transmitter/Gas Detector Head
SD-1DRI
Operating Manual
(PT2E-196)
(PT2-196)

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.
1. This detector may be interfered by gases and vapors other than the gas to be detected.
Please note that the alarm may be triggered by interference. In addition, it may be fluctuated by
environmental (temperature, humidity, etc.) changes in the installation site.
2. The alarm must be set within a range where the performance of the detector can be ensured.
In facilities compliant with the High Pressure Gas Safety Act, an alarm setting below our standard
alarm setpoint may trigger a false alarm.
3. This is a safety unit, not a control unit.
The alarm contact output of the detector must be used for an external alarm lamp/buzzer, while the
alarm signal output must be used for an indicator or external recorder.
If these outputs are used to control other units, we shall not be responsible for any malfunctions.
4. For maintenance of the detector, it must go through a regular maintenance, including replacement and
adjustment of the regular replacement parts as specified in the operating manual. In addition, because
this is a safety unit, it is recommended that a regular maintenance and a gas calibration are performed
every six months in accordance with the regulations.

Operating Precautions
1
<Contents>
1 Outline of the Product ......................................................................................................... 1
1-1. Preface.............................................................................................................................. 1
1-2. Purpose of use .................................................................................................................. 1
1-3. Definition of DANGER, WARNING, CAUTION, and NOTE............................................... 1
1-4. Method of confirmation for Standards and Explosion proof specification .......................... 2
2 Important Notices on Safety................................................................................................ 3
2-1. Danger cases .................................................................................................................... 3
2-2. Warning cases .................................................................................................................. 4
2-3. Precautions ....................................................................................................................... 5
2-4. Safety Information ............................................................................................................. 6
3 Product Components .......................................................................................................... 8
3-1. Gas detector and standard accessories............................................................................ 8
3-2. Names and functions for each part ................................................................................... 9
3-3. Block diagram ................................................................................................................... 10
4 How to Use ......................................................................................................................... 11
4-1. Before using the detector .................................................................................................. 11
4-2. Precautions for installation points...................................................................................... 11
4-3. Precautions for system designing ..................................................................................... 12
4-4. How to install..................................................................................................................... 14
4-5. Installation procedure........................................................................................................ 15
4-6. How to wire ....................................................................................................................... 17
4-7. How to tube ....................................................................................................................... 21
5 How to Operate................................................................................................................... 22
5-1. Preparation for start-up ..................................................................................................... 22
5-2. Basic operating procedures............................................................................................... 22
5-3. How to start the detector ................................................................................................... 23
5-4. Modes ............................................................................................................................... 24
5-5. Maintenance mode(User).................................................................................................. 25
5-6. How to exit ........................................................................................................................ 27
6 Operations and Functions................................................................................................... 28
6-1. Gas alarm activation ......................................................................................................... 28
6-2. Fault alarm activation ........................................................................................................ 29
6-3. External output operation .................................................................................................. 30
6-4. Other functions.................................................................................................................. 31
7 Maintenance ....................................................................................................................... 32
7-1. Maintenance intervals and items....................................................................................... 32
7-2. Maintenance mode (Regular maintenance) ...................................................................... 34
7-3. Gas calibration method ..................................................................................................... 41
7-4. Parts replacement ............................................................................................................. 44
8 Storage, Relocation and Disposal....................................................................................... 46
8-1. Procedures to store the detector or leave it for a long time............................................... 46
8-2. Procedures to relocate the detector or use it again........................................................... 46
8-3. Disposal of products.......................................................................................................... 46
9 Troubleshooting .................................................................................................................. 47
10 Product Specifications ...................................................................................................... 49
10-1. List of specifications ........................................................................................................ 49
10-2. Detection principle........................................................................................................... 54
11 Definition of Terms ............................................................................................................ 55

1 Outline of the Product 1-1. Preface
- 1 -
1
Outline of the Product
1-1. Preface
Thank you for choosing our smart transmitter/gas detector head SD-1DRI. 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. Not only the first-time users but also the users who have already used the
product must read and understand the operating manual to enhance the knowledge and experience before
using the detector.
1-2. Purpose of use
The detector is a fixed type gas detector head that detects leak of combustible gases and that performs the
alarm activation when the gas concentration is over the setting value.
This detector is a safety unit, not an analyzer or densitometer which performs quantitative/qualitative
analysis/measurement for gases. Please fully understand the features of the detector before using it, so
that it can be used properly.
The detector detects abnormalities in the air caused by presence of gases or other reasons (leak) with the
built-in gas sensor. The concentrations of detected gases are displayed on the seven-segment LED.
An external pump etc. outside the detector introduces gas to perform gas detection.
The detector has a built-in alarm contact and can be used either as a gas alarm, fault alarm, or common
(gas, fault) alarm.
The detector outputs gas concentration in 4 – 20 mA.
1-3. Definition of DANGER, WARNING, CAUTION, and
NOTE
DANGER
This message indicates that improper handling may cause serious
damage on life, health or assets.
WARNING
This message indicates that improper handling may cause serious
damage on health or assets.
CAUTION
This message indicates that improper handling may cause minor
damage on health or assets.
NOTE This message indicates advice on handling.

3 Product Components 3-3. Block diagram
- 10 -
3-3. Block diagram
<Electric Diagram>
Sensor
Controller
(CPU)
POWER INPUT (24 VDC)
Power supply part
1.Gas alarm contact
(ALARM)
or
2.Fault contact (FAULT)
or
3.Select either gas alarm or
contact (ALARM/FAULT)
Contact activation
De-energized
(De-energized at a
normal state)
ON-ALARM (Closed
contact at an alarm
Alarm contact controller
Display
(POWER) (ALARM) (FAULT)
Seven-segment LED
(four-digit)
Magnetic operation part
(MENU/ESC) (▲) (▼) (SET)
Transmitter
• 4 – 20 mA transmission

4 How to Use 4-5. Installation procedure
- 16 -
NOTE
・Our company-specified grease : BARRIERTA JFE 552 (manufactured by NOK KLUBER)
If you can not prepare the specified grease, use one that meets the following requirements.
1. Material does not harden due to deterioration
2. Volatile solvent-free
3. Material does not cause corrosion at the surface
4. Silicon-free
5. Validation of suitability depends on the specifications of grease manufacturer