Riken Keiki GD-10X Series User manual

PT2E-1822
Fixed type Oxygen Detector Head
GD-1OX Series
GD-1OX, GD-1DOX
Operating Manual
(PT2-182/PT2-183)

Operating Precautions
The detector detects oxygen in the atmosphere and prevents acid-deficient accidents due to acid-deficient
air release or accidents due to excessive oxygen.
Please fully understand the following points before using it, so that it can be used properly.
1. The detector may be interfered by gases and vapors other than oxygen in the atmosphere.
In addition, it may be fluctuated by environmental (temperature, humidity etc.) changes in the
installation site.
2. The detector is affected by pressure. If the detector is used at a pressure other than atmospheric
pressure, a calibration is required under that pressure. The maximum allowable pressure is 110 KPa.
The detector cannot be used under reduced pressure.
3. The gas sensor used by the detector contains an electrolyte. Electrolyte may cause severe skin burns if
it contacts skin, while it may cause blindness if its contacts eyes. Do not touch the sensor directly in the
event of a liquid leak.
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
2 Important Notices on Safety .................................................................................................. 3
2-1. Danger cases .................................................................................................................... 3
2-2. Warning cases .................................................................................................................. 4
2-3. Precautions ....................................................................................................................... 5
2-4. Operating precautions....................................................................................................... 6
3 Product Components............................................................................................................. 7
3-1. Main unit and standard accessories.................................................................................. 7
3-2. Names and functions for each part ................................................................................... 8
3-3. important information about explotion-proof ...................................................................... 9
4 How to Use............................................................................................................................ 10
4-1. Before using the gas detector ........................................................................................... 10
4-2. Precautions for installation sites........................................................................................ 10
4-3. Precautions for system designing ..................................................................................... 10
4-4. How to install..................................................................................................................... 11
4-5. Installation procedure........................................................................................................ 13
4-6. How to wire ....................................................................................................................... 15
4-7. Cable connection example................................................................................................ 17
4-8. How to tube ....................................................................................................................... 19
5 How to Operate ..................................................................................................................... 20
5-1. Preparation for start-up ..................................................................................................... 20
5-2. Basic operating procedures............................................................................................... 20
5-3. How to start the gas detector ............................................................................................ 20
5-4. How to exit ........................................................................................................................ 21
6 Maintenance.......................................................................................................................... 21
6-1. Maintenance intervals and items....................................................................................... 21
6-2. Calibration method ............................................................................................................ 23
6-3. Replacement parts ............................................................................................................ 25
7 Storage, Relocation and Disposal ......................................................................................... 30
7-1. Procedures to store the gas detector or leave it for a long time ........................................ 30
7-2. Procedures to relocate the detector or use it again........................................................... 30
7-3. Disposal of products.......................................................................................................... 30
8 Troubleshooting..................................................................................................................... 29
9 Product Specifications........................................................................................................... 30
9-1. List of specifications .......................................................................................................... 30
9-2. Detection principle............................................................................................................. 31
10 Definition of Terms............................................................................................................... 32

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 fixed type oxygen detector head GD-1OX/GD-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 two models: GD-1OX, GD-1DOX and their 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.
Note that the detector cannot be used alone. Use it with the dedicated indicator/alarm unit. Be sure to read
the operating manual of the indicator/alarm unit as well.
GD-1OX Diffusion type
GD-1DOX Suction type
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 suction type of the detector uses an external pump, etc. to introduce gas and performs gas
detection.
Use the detector in combination with an indicator/alarm unit that indicates an oxygen concentration
and triggers an alarm.
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