Riken Keiki FI-915 User manual

PT6E-0281
Optical Interferometric Gas Monitor
FI-915
Operating Manual

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Preface
Thank you for choosing our optical interferometric gas concentration reading adjustment meter FI-915.
This manual describes how to use FI-915. Not only the first-time users but also the users who have
already used FI-915 must read and understand the operating manual before using FI-915.
Throughout this manual, the following indications are used to ensure safe and effective work.
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.
SDHC Logo is a trademark of SD-3C LLC.
Use one of the following SD cards:
SD standard: SDSC, SDHC
File system: FAT16, FAT32

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Contents
1 Important Notices on Safety ............................................................................................................................ 5
1-1. Danger Cases ...................................................................................................................................... 5
1-2. Warning Cases .................................................................................................................................... 5
1-3. Precautions .......................................................................................................................................... 6
2 Product Components ....................................................................................................................................... 7
2-1. Intended Use and Features of Product ................................................................................................ 7
2-2. Product Outline Drawing ...................................................................................................................... 8
2-3. Accessories .......................................................................................................................................... 9
2-3-1. Standard Accessories..................................................................................................................... 9
2-3-2. Optional Accessories ..................................................................................................................... 9
2-3-3. Maintenance Parts .......................................................................................................................... 9
2-4. Names and Functions for Front Panel ............................................................................................... 10
2-5. Block diagram .................................................................................................................................... 11
3 How to Install ................................................................................................................................................. 12
3-1. Precautions on Installation Site ......................................................................................................... 12
3-2. How to Install Product and Precautions ............................................................................................. 13
3-3. How to Connect Wire ......................................................................................................................... 15
3-3-1. Descriptions of External Terminal Plate And How to Connect Wire ........................................ 15
3-3-2. Precautions on Electrical Work ................................................................................................... 16
3-3-3. Protective grounding .................................................................................................................... 17
3-4. How to Tube ....................................................................................................................................... 18
4 How to Operate in Measuring Mode .............................................................................................................. 20
4-1. How to Start Measurement from Power-on Display ........................................................................... 20
4-2. LCD Screen during Measurement and How to Perform Flow Adjustment ........................................ 21
4-3. How to Perform Reference Calibration .............................................................................................. 22
4-4. How to End Measurement (Power-off) .............................................................................................. 23
4-5. Change to Another Mode ................................................................................................................... 24
4-6. Self-diagnostic Monitoring Function .................................................................................................. 25
5 How to Operate in Check Mode .................................................................................................................... 26
5-1. Check Mode Menu Items ................................................................................................................... 27
5-2. Each Item and Details ........................................................................................................................ 28
6 How to Operate in Setup Mode ..................................................................................................................... 37
6-1. Items in Setup Mode .......................................................................................................................... 38
6-2. Each Item And Details ....................................................................................................................... 39
7 Maintenance .................................................................................................................................................. 56
7-1. Maintenance Intervals and Items ....................................................................................................... 56
7-2. Daily Maintenance ............................................................................................................................. 56
7-3. Regular Maintenance for Every 6 Months ......................................................................................... 57
7-4. Recommended Regular Replacement Parts ..................................................................................... 57
7-5. How to Replace Pump ....................................................................................................................... 58
7-6. How to Replace Fuse ........................................................................................................................ 59
8 Storage, Relocation and Disposal ................................................................................................................. 60
8-1. Procedures to Store FI-915 or Leave It for a Long Time ................................................................... 60
8-2. Disposal of Products .......................................................................................................................... 61
9 Troubleshooting ............................................................................................................................................. 62
9-1. FAILURE ............................................................................................................................................ 62
9-2. OUT OF SPECIFICATION ................................................................................................................. 66
9-3. MAINTENANCE REQUIRED ............................................................................................................. 68
9-4. FUNCTION CHECK ........................................................................................................................... 69
10 Product Specifications ................................................................................................................................. 70
10-1. Standard Specifications ................................................................................................................... 70
10-2. Detection principle ........................................................................................................................... 72

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11 Definition of Terms ....................................................................................................................................... 73

1 Important Notices on Safety 1-1. Danger Cases
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1
Important Notices on
Safety
1-1. Danger Cases
1-2. Warning Cases
DANGER
 FI-915 is not explosion-proof. Do not install or use FI-915 in a location designated as a
hazardous area (explosion-proof area).
 Use the rated power supply specified for FI-915.
 Ground the EARTH terminal on the external terminal plate before use to avoid a risk of
electric shock. Perform the grounding work while FI-915 is not powered.
WARNING
Sampling point pressure
 FI-915 is designed to draw gases under the atmospheric pressure. If excessive pressure is
applied to the gas inlet (GAS IN) and outlet (GAS OUT) of FI-915, measured gases may leak out
from its inside and may cause dangerous conditions. Be sure that excessive pressure is not
applied to FI-915 while used.
 Do not connect the gas sampling hose directly to a location with a pressure higher than the
atmospheric pressure. The internal piping system may be damaged.
Reference calibration in the atmosphere
 When the reference calibration is performed in the atmosphere, check the atmosphere for
freshness before beginning the calibration. When the calibration is performed in the atmosphere
in which interference gases (gases that are neither the measured gas nor the base gas) exist,
correct measurement, monitoring and control cannot be performed causing a danger.
Others
 Do not draw a high-concentration gas beyond the measuring range. Accurate readings cannot
be obtained.

1 Important Notices on Safety 1-3. Precautions
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1-3. Precautions
CAUTION
 A low-volatile solvent that condenses (liquefies) within FI-915 or within a tube connected to
FI-915 cannot be measured.
 A solvent gas with high humidity that causes condensation within FI-915 or within a tube
connected to FI-915 cannot be measured.
 Do not use FI-915 near a device that significantly disturbs the waveform of power supply such
as electric welder. Also, do not use a power supply of the same system as a device that
significantly disturbs the waveform of power supply.
 Carefully manage the temperature around FI-915 to prevent a measuring solvent from
condensing (liquefying) within FI-915 or tube connected to FI-915.

2 Product Components 2-1. Intended Use and Features of Product
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2
Product Components
2-1. Intended Use and Features of Product
FI-915 is designed to perform continuous measurement, monitoring and control of the concentration of
solvent vapor generated from drying equipment such as photogravure printing machine.
The optical interferometric system has been adopted as a principle for concentration measurement to
provide highly accurate, stable measurements. In addition, it has a reference calibration function that
automatically performs sensor output adjustment using a reference gas (for FI-915, a zero gas such as
fresh air) as a reference for concentration measurement, allowing more stable operations.

2 Product Components 2-3. Accessories
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2-3. Accessories
2-3-1. Standard Accessories
･ Main unit operating manual
･ MC (ST) filter (GAS IN dust filter)
･ Cylindrical filter CF-8369 (REF IN dust filter)
2-3-2. Optional Accessories
SD card (2 GB)
Fuse
2-3-3. Maintenance Parts
･ Replacement interferometer Unit
･ Replacement pump (RP-60)
･ Fuse (250 V 2 A, Φ5.2 x 20 mm, time-lag type)

2 Product Components 2-5. Block diagram
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2-5. Block diagram
Solenoid
valve
Flow sensor
Pump
Needle
valve
Activated Carbon filter
Pulsation prevention buffer
Absolute
pressure sensor

3 How to Install 3-1. Precautions on Installation Site
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3
How to Install
3-1. Precautions on Installation Site
Do not install FI-915 in any of the following locations.
(1) Place where FI-915 is exposed to water, oil,
chemicals, etc.
(2) Place with vibrations
(3) Place where radio wave or noise is
generated
(4) Place where FI-915 may drop or receive
strong shock
(5) Place exceeding the operating temperature
range
Place where FI-915 is exposed to direct
sunlight or radiant heat
(6) Place where maintenance of FI-915 cannot
be performed
Place where handling of FI-915 involves
dangers

3 How to Install 3-2. How to Install Product and Precautions
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CAUTION
 Do not drop or give strong shock to FI-915 during installation. Otherwise, the device may be
damaged.
 If FI-915 is to be fixed on a rack, etc., install it properly on a rack that can hold its weight.
 When performing construction work, prevent dust, etc., from entering the inside of FI-915.
 When installing FI-915 on a freestanding rack (fixed type), fix the rack with anchor bolts.
 Leave a space of at least 600 mm between the front/back side of FI-915 and wall to secure
maintenance space.
 When installing FI-915 in an enclosed storage board, take a measure to prevent the
temperature inside the storage board from rising over 50°C.
 When installing FI-915 on a storage board panel, leave sufficient length of wires and tubes so
that maintenance can be performed with the unit pulled out by at least half the length of its
depth without removing wires and tubes at the back.

3 How to Install 3-3. How to Connect Wire
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3-3. How to Connect Wire
3-3-1. Descriptions of External Terminal Plate And How to
Connect Wire
<Details of the terminal plate>
(1) 100 - 240 VAC ± 10%
50/60 Hz
(11)
This is not used.
(2) (12)
(3) Grounding (EARTH) D type ground (13)
(4) REF IN * (14) REF IN *
(5) Reference calibration button for
remote operation
(When they are short-circuited, the
reference calibration function is
activated)
(15) Alarm contact output 1 (non-voltage contact)
Contact capacity: 1 A 240 VAC/1 A 30 VDC
(resistance load)
1 A 240 VAC/1 A 30 VDC (resistance load)
(6) (16)
(7)
This is not used.
(17) Alarm contact output 2 (non-voltage contact)
Contact capacity: 1 A 240 VAC/1 A 30 VDC
(resistance load)
1 A 240 VAC/1 A 30 VDC (resistance load)
(8) (18)
(9)
Output signal 4 - 20 mA
(19) Fault alarm contact output (non-voltage contact)
Contact capacity: 1 A 240 VAC/1 A 30 VDC
(resistance load)
(10) (20)
※ When (4) and (14) are short-circuited, the REF gas is drawn.
The terminal screw of the terminal plate is a screw with a square washer (M3.5 x 8). Use the cable of 1.25
mm2 to attach a crimped terminal with insulating coating for M3.5 to the tip of it for wiring.
 Power supply/contact cables: Cables equivalent to CVV 1.25 mm2
 Other signal cables: Cables equivalent to CVVS 1.25 mm2

3 How to Install 3-3. How to Connect Wire
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NOTE
 If you are connecting a recording meter or an external meter to the output (dc4-20ma), be sure to set
the isolator immediately after the terminal to prevent the noise from being induced by the connected
cable.
<Details of the RS-485 communication terminal>
Used when the RS-485 communication function is used.
<RS-485 communication terminal cable connection conditions>
Cable: 0.2 - 2.5 mm2
Bare wire length: Approx. 7 mm
Screw tightening torque: 0.5 - 0.6 Nm
Applicable screwdriver: Flathead screwdriver (width 3 mm or less)
Compatible bar terminal: For a bar terminal, the following items are available.
 Bar terminal: Model AI series (manufactured by Phoenix Contact)
 Crimping tool: Model CRIMPFOX UD 6 (manufactured by Phoenix Contact)
3-3-2. Precautions on Electrical Work
The noise induced by an unstable power supply or cable may cause malfunctions, false alarms or failures.
1. Use a stable power supply for the system.
(1) FI-915 must be provided with the following power supply.
Power voltage: 100 - 240 VAC ±10%
Allowed time of momentary blackout: Approx. 50 msec or less
(A restart may be required to recover from the momentary
blackout for 50 msec or more.)
To ensure continuous operation and activation, install a UPS outside FI-915.
(2) Do not make the power supply line in parallel with another high-voltage/high-current line.
RS-485 *

3 How to Install 3-3. How to Connect Wire
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2. Take a measure against noise according to the installation environment.
(1) Measure against lightning surge
"Lightning" is a problem for the devices installed outdoors at plants, etc. Because lightning acts as a
large emission source while cables act as a receiving antenna, devices connected to the cables
may be damaged. Cables installed in a metal conduit or under the ground cannot be completely
protected from inductive lightning surge caused by lightning. However, the following measure can
be taken. Take an appropriate measure before using FI-915.
<Provide protection by a lightning arrester (cable arrester)>
Although inductive lightning surge can be transmitted through the cable, it is prevented by installing
a lightning arrester before the field devices and central processing equipment. Insert lightning
arresters to the points where the cables enter the building from outside. A lightning arrester has a
circuit that removes a surge voltage to prevent field devices from being damaged.
(2) Measure against power line noise
The following measures can be taken to mitigate the influence of electromagnetic or electrostatic
induction noise from the power line. Take an appropriate measure before using FI-915.
<Keep away from power line>
Keep enough distance between the signal and power lines, avoiding parallel layout if possible. If
they need to intersect with each other, it should be done at a right angle.
<Install an electrostatic shield>
Use a shielded signal line and ground the shield. Also, take measures to make the electrical
isolation such as using an iron raceway for the power line, installing a grounded metal partition
plate between the lines and putting each line in an individual metal duct.
In addition to lightning, there are more sources of surge noise. To protect devices from these noise
sources, the devices must be grounded.
3-3-3. Protective grounding
For stable operation of FI-915 and safety, it must be connected to a grounding terminal. The grounding
wire should be thick and short as much as possible to minimize grounding resistance. Use the EARTH
terminal (terminal 3) of the external terminal plate to ground FI-915.
CAUTION
 Be careful not to damage the internal electronic circuit when wiring.
CAUTION
 The "b" contact (break contact) under de-energized state may be opened momentarily by a
physical shock, such as external force.
 When the "b" contact is selected for the alarm contact, take appropriate actions to prepare for a
momentary activation, for example, add signal delay operation (approximately one second) to
the receiving side of the "b" contact.
WARNING
 The grounding must be made as D type grounding (below 100 Ω of grounding resistance).
 Do not connect the grounding wire to a gas tube.

3 How to Install 3-4. How to Tube
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(7) As a general rule, exhaust should be atmosphere release. When the tip is outside, bend the shape of
the tube into an inverted U to prevent rain from entering the tube. When it returns to the exhaust duct
etc., keep the state within the atmosphere pressure of ±3 kPa, and the state that pressure fluctuation
is not rapidly changed.
(8) For safety, to provide a flame arrestor for line, install it into each line of the GAS IN and GAS OUT.
CAUTION
 FI-915 requires appropriate tubing works (selection of materials and other works) depending on
types of sample gas and installation conditions. For questions about tubing works, please
contact the distributor.