Riken Keiki SD-1DOX User manual

PT2E-1799
Smart Transmitter/Gas Detector Head
SD-1DOX
Operating Manual
(PT2E-179)
(PT2-179)

Operating Precautions
This detector is an oxygen deficiency detector that detects oxygen in the air and triggers an oxygen
deficiency alarm.
The oxygen deficiency detector is a safety unit, not an analyzer or densitometer which performs
quantitative/qualitative analysis/measurement for oxygen.
Please fully understand the following points before using it, so that it can be used properly.
1. The readings of the detector fluctuate slightly in response to changes in the air pressure.
In particular, be careful of alarm activation when a low air pressure is brought in by typhoon. 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.
The standard alarm setpoint value is 18 vol%.
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
analog signal output must be used for an indicator or external recorder.
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 span adjustment are performed
every six months.

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<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 .................................................................................................. 4
2-1. Danger cases .................................................................................................................... 4
2-2. Warning cases .................................................................................................................. 5
2-3. Precautions ....................................................................................................................... 6
2-4. Safety Information ............................................................................................................. 7
3 Product Components............................................................................................................. 9
3-1. Main unit and standard accessories.................................................................................. 9
3-2. Names and functions for each part ................................................................................... 10
3-3. Block diagram ................................................................................................................... 11
4 How to Use............................................................................................................................ 12
4-1. Before using the gas detector ........................................................................................... 12
4-2. Precautions for installation sites........................................................................................ 12
4-3. Precautions for system designing ..................................................................................... 13
4-4. How to install..................................................................................................................... 16
4-5. Installation procedure........................................................................................................ 18
4-6. How to wire ....................................................................................................................... 20
4-7. How to tube ....................................................................................................................... 24
5 How to Operate ..................................................................................................................... 25
5-1. Preparation for start-up ..................................................................................................... 25
5-2. Basic operating procedures............................................................................................... 25
5-3. How to start the gas detector ............................................................................................ 26
5-4. Modes ............................................................................................................................... 27
5-5. Maintenance Mode(User).................................................................................................. 28
5-6. How to exit ........................................................................................................................ 30
6 Operations and Functions ..................................................................................................... 31
6-1. Alarm activation................................................................................................................. 31
6-2. Fault alarm activation ........................................................................................................ 32
6-3. External output operation .................................................................................................. 33
6-4. Other functions.................................................................................................................. 34
7 Maintenance.......................................................................................................................... 35
7-1. Maintenance intervals and items....................................................................................... 35
7-2. Maintenance mode(Regular maintenance) ....................................................................... 37
7-3. Calibration method ............................................................................................................ 44
7-4. Replacement parts ............................................................................................................ 47
8 Storage, Relocation and Disposal ......................................................................................... 48
8-1. Procedures to store the gas detector or leave it for a long time ........................................ 48
8-2. Procedures to relocate the detector or use it again........................................................... 48
8-3. Disposal of products.......................................................................................................... 48
9 Troubleshooting..................................................................................................................... 49
10 Product Specifications......................................................................................................... 51
10-1. List of specifications ........................................................................................................ 51
10-2. Detection principle........................................................................................................... 59
11 Definition of Terms............................................................................................................... 60

1 Outline of the Product 1-1. Preface
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1
Outline of the Product
1-1. Preface
Thank you for choosing our smart transmitter/gas detector head SD-1DOX. 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 gas 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.
This manual provides explanation using O2 specification (detection range from 0 to 25vol%) as examples
(such as examples of LED display).
1-2. Purpose of use
This detector is a fixed type gas detector head that detects oxygen and performs the alarm activation
when the gas concentration is over the setting value.
The 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.

4 How to Use 4-4. How to install
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NOTE
・Hexagon socket head cap bolt with strength class "A2-70" are used.
When you lost or replace it, we recommend that you ask our local sales office nearest you.
・Grease specified by RIKEN KEIKI : 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
Detector head installation direction