Riken Keiki RS-400 Series User manual

PT3E-0512
Explosion-Proof Calorimeter OHC-800
Sampling Device
RS-400 Series
Operating Manual

Preface
Thank you for choosing our explosion-proof calorimeter OHC-800-RS-400.
This product is an explosion-proof calorimeter in a flame-proof enclosure (explosion-proof class: Ex
dIIB+H2 T4) consisting of a gas measuring part "OHC-800" and a sampling device "RS-400-□□□□," which
is designed for continuous, fast-response measurement of the "Calorific value," "Density," and "WOBBE
index" of various fuel gases such as natural gas, coke oven gas, blast furnace gas, converter gas, biomass
gas and biogas.
This manual describes how to use the calorimeter. Not only the first-time users but also the user who have
already used the calorimeter must read and understand the operating manual before using this product.
This manual mainly provides descriptions on the sampling device. Read also the separate volume "OHC-
800 Operating Manual" for the operation of measuring part OHC-800.
Throughout this manual, the following indications are used to ensure safe and effective work.
DANGER
This message indicates that improper handling may cause death or 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.

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<Contents>
1. Product Overview .................................................................................................... 2
1-1. Product components and accessories..................................................................... 2
1-2. Names and functions for each part.......................................................................... 3
1-3. Outline drawing and tubing diagram for each specification ..................................... 4
2. How to Install Calorimeter ....................................................................................... 15
2-1. Precautions on installation site ................................................................................ 15
2-2. Precautions on installation....................................................................................... 16
2-3. Maintenance space ................................................................................................. 17
3. How to Connect Wire............................................................................................... 18
3-1. Description of terminal plate .................................................................................... 18
3-2. Recommended cable............................................................................................... 20
3-3. Cable connection..................................................................................................... 21
3-4. Protective grounding................................................................................................ 23
3-5. Precautions on electrical work................................................................................. 24
4. How to Tube ............................................................................................................ 27
4-1. Recommended external tubing system ................................................................... 27
4-2. Precautions on tubing work ..................................................................................... 29
5. How to Adjust/Use Calorimeter................................................................................ 30
5-1. How to start the gas detector................................................................................... 30
5-2. How to use three-way switching valve..................................................................... 32
5-3. How to use sampling parts ...................................................................................... 35
5-3-1 Adjusting needle valve............................................................................................. 35
5-3-2 Adjusting pressure reducing valve........................................................................... 36
5-3-3 Bypass line .............................................................................................................. 36
5-3-4 Relief valve.............................................................................................................. 37
5-4. How to adjust reference gas flow rate ..................................................................... 38
5-5. How to adjust measuring gas flow rate.................................................................... 39
5-6. How to adjust calibration (standard) gas flow rate................................................... 40
6. Maintenance............................................................................................................ 41
6-1. Maintenance item .................................................................................................... 41
6-2. Procedures to store the calorimeter or leave it for a long time ................................ 41
7. Definition of Terms................................................................................................... 42
8. Product Specifications ............................................................................................. 43
8-1. Product Specifications ............................................................................................. 43

1 Product Overview 1-1. Product components and accessories
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1
Product Overview
1-1. Product components and accessories
•Gas measuring part "OHC-800": 1 set
•Sampling device "RS-400-□□□□": any set
* See the following classification of sampling device models.
•Operating manuals (this manual and the operating manual for measuring part)
NOTE
This product is designed to have a measuring part "OHC-800" incorporated in the sampling device. The
tubing required for "OHC-800" has been arranged inside the main unit prior to shipment.
[Sampling Device Classification]
Pressure gauge unit
1: MPa
2: MPa/PSI double units
* "1: MPa" is selected for the use in Japan
because of the Measurement Act.
Bypass flow rate of measuring gas
0: Not bypassed
1: 0.5 - 5 L/min
2: 1 - 10 L/min
3: 2 - 20 L/min
* "0: Selection unavailable" is applied for the case
without pressure reducing valve.
Use of pressure reducing valve for measuring gas
0: Pressure reducing valve not used
1: Pressure reducing valve used
Storage box
0: No storage box
1: Outdoor box (SUS) with shading plate
2: Indoor box (SPCC) with window
RS-400-□□□□

1 Product Overview 1-2. Names and functions for each part
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1-2. Names and functions for each part
The following figure shows a typical internal tubing system of the sampling device RS-400 series.
Unit names and functions
Unit
Symbol
Part
Functions
UNIT-A
V1
Needle valve
Adjusts the flow rate of the measuring gas supplied from UNIT-B.
V2
Needle valve
Adjusts the flow rate of the reference gas or calibration gas
supplied from UNIT-C.
CV
Switching valve
Selects a gas to be supplied to the OHC-800.
UNIT-B
PR
Pressure
reducing valve
Adjusts the measuring gas supplied from GAS IN to a constant
pressure.
PG
Pressure gauge
Indicates the pressure of the measuring gas after pressure
adjustment.
(Display scale: 0 - 0.2 MPa)
FL
Flow meter with
needle valve
Adjusts and indicates the bypass flow rate of the gas discharged
from BYPASS OUT.
(Display scale: 0.5 - 5 L/min, 1 - 10 L/min, 2 - 20 L/min
* Varies by the specification.)
UNIT-C
PR
Pressure
reducing valve
Adjusts the reference gas supplied from REF IN to a constant
pressure.
PG
Pressure gauge
Indicates the pressure of the reference gas after pressure
adjustment.
(Display scale: 0 - 0.2 MPa)
V
Needle valve
Adjusts the flow rate of the reference gas to be supplied to the
OHC-800.
(Display scale: 0.5 - 5 L/min, 1 - 10 L/min, 2 - 20 L/min
* Varies by the specification.)
CV
Switching valve
Switches the gas to be supplied to UNIT-A between the reference
gas and calibration gas.
UNIT-D
RV1
Relief valve
When the sampling system malfunctions, lets out an excessive
pressure from RELIEF OUT to prevent breakage of the OHC-800.
RV2
Relief valve
* The UNIT-B specification without pressure reducing valve and bypass line is also available.

1 Product Overview 1-3. Outline drawing and tubing diagram for each specification
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<Common between RS-400-100□, RS-400-10□□ and RS-400-11□□>
Outdoor box (SUS) with shading plate
* Swagelok fitting for 1/4" tube is used at all connections of tubing.

1 Product Overview 1-3. Outline drawing and tubing diagram for each specification
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<Common between RS-400-200□, RS-400-20□□ and RS-400-21□□>
Indoor box (SPCC) with window
* Swagelok fitting for 1/4" tube is used at all connections of tubing.

2 How to Install Calorimeter 2-1. Precautions on installation site
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2
How to Install Calorimeter
2-1. Precautions on installation site
Do not install this product in any of the following locations.
(1) Place where the calorimeter is exposed
to oil, chemicals etc.
(2) Place with vibrations
(3) Place where radio wave or noise is
generated
(4) Place where the calorimeter may drop
or receive strong shock
(5) Place exceeding the operating
temperature range
Place where the calorimeter is exposed
to direct sunlight or radiant heat
(6) Place where maintenance of the
calorimeter cannot be performed
Place where handling of the
calorimeter involves dangers

2 How to Install Calorimeter 2-2. Precautions on installation
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2-2. Precautions on installation
CAUTION
Do not drop or give strong shock to the calorimeter during installation.
Otherwise, the device may be damaged.
CAUTION
If the calorimeter is to be fixed on the wall, install it properly
where can hold its weight.
CAUTION
When installing the calorimeter on a freestanding rack (fixed type), fix the freestanding rack with
anchor bolts.
CAUTION
When performing construction work, prevent dust from entering the inside of the calorimeter.