Riken Keiki FI-21 User manual

FI-21
Operator’s Manual
Optical Gas Indicator

Warning
Read and understand this instruction manual
before operating instrument. Improper use of
the gas monitor could result in bodily harm or
death.
Periodic calibration and maintenance of the gas
monitor is essential for proper operation and
correct readings. Please calibrate and maintain
this instrument regularly! Frequency of
calibration depends upon the type of use you
have and the sensor types. Typical calibration
frequencies for most applications are between 1
and 3 months, but can be required more often or
less often based on your usage.
Contact Information
http://www.gastech.com.au
24 Baretta Rd
Wangara Western Australia 6065
GasTech Australia Pty Ltd
Fax [phone]
Tel [phone]

Warranty
Control Equipment Pty Ltd warrants gas alarm equipment sold by us to be free from defects in
materials, workmanship, and performance for a period of one year from date of shipment from
Control Equipment Pty Ltd. Any parts found defective within that period will be repaired or replaced,
at our option, free of charge. This warranty does not apply to those items, which by their nature, are
subject to deterioration or consumption in normal service, and which must be cleaned, repaired, or
replaced on a routine basis. Examples of such items are as follows:
Absorbent cartridges
Batteries
Pump diaphragms and valves
Filter elements
Fuses
Warranty is voided by abuse including mechanical damage, alteration, rough handling, or repair
procedures not in accordance with the operator’s manual. This warranty indicates the full extent of
our liability, and we are not responsible for removal or replacement costs, local repair costs,
transportation costs, or contingent expenses incurred without our prior approval.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER WARRANTIES AND
REPRESENTATIONS, EXPRESSED OR IMPLIED, AND ALL OTHER OBLIGATIONS OR LIABILITIES ON
THE PART OF CONTROL EQUIPMENT PTY LTD, INCLUDING BUT NOT LIMITED TO, THE
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
SHALL CONTROL EQUIPMENT PTY LTD BE LIABLE FOR INDIRECT, INCIDENTAL, OR
CONSEQUENTIAL LOSS OR DAMAGE OF ANY KIND CONNECTED WITH THE USE OF ITS
PRODUCTS OR FAILURE OF ITS PRODUCTS TO FUNCTION OR OPERATE PROPERLY.
This warranty covers instruments and parts sold to users by authorized distributors, dealers, and
representatives as appointed by Control Equipment Pty Ltd.
We do not assume indemnification for any accident or damage caused by the operation of this gas
monitor, and our warranty is limited to the replacement of parts or our complete goods.

Contents
WARRANTY.................................................................................................................................................................. 3
1.0 PARTS AND FUNCTION .................................................................................................................................... 7
2.0 MEASURING MODE (POWER KEY) ................................................................................................................... 9
2.1 Basic Display for Measuring Mode and Explanation........................................................................................ 9
2.2 Procedures from Power ON to Measurement .............................................................................................. 10
2.3 Saving Data ................................................................................................................................................... 12
2.4 Initial Display (Self-diagnostic Display) ......................................................................................................... 12
2.6 AIR CAL. CAUTION ......................................................................................................................................... 12
2.7 Affection on Measurement from Pressure ................................................................................................... 13
3.0 SETTING MODE (ENTER + POWER) ................................................................................................................ 15
3.1 Changing the Measuring Gas (SELECT GAS) ................................................................................................... 15
3.2 Adjusting the Time (SET DATE / TIME)........................................................................................................... 16
3.3 Confirming the Saved Data (VIEW SAVED DATA)........................................................................................... 16
3.4 Clearing the Saved Data (CLEAR SAVED DATA) .............................................................................................. 16
3.5 Start the Measurement （START MEAS. ）.................................................................................................. 16
4.0 MAINTENANCE.............................................................................................................................................. 17
4.1 Replacing the Batteries ................................................................................................................................. 17
4.2 Confirming the Sensitivities........................................................................................................................... 17
4.3 Daily Check.................................................................................................................................................... 17
4.4 Frequency / Standard for Replacing Parts ..................................................................................................... 17
5.0 DISPOSING THE INSTRUMENT ....................................................................................................................... 18
6.0 TROUBLE SHOOTING ..................................................................................................................................... 18
7.0 CAUTION OF USAGE ...................................................................................................................................... 19
8.0 DEFENITION OF TERMS ................................................................................................................................. 20
9.0 SPECIFICATIONS ............................................................................................................................................ 21
9.1 Specifications ................................................................................................................................................ 21
9.2 Standard Accessories .................................................................................................................................... 22

10.0 MEASURING PRINCIPLE............................................................................................................................. 23
11.0 TYPE-01 SPECIFICATIONS.......................................................................................................................... 24
12.0 TYPE-02 SPECIFICATIONS.......................................................................................................................... 25
13.0 TYPE-03 SPECIFICATIONS.......................................................................................................................... 26
14.0 TYPE-04 SPECIFICATIONS.......................................................................................................................... 27
15.0 TYPE-05 SPECIFICATIONS.......................................................................................................................... 28

The Riken Gas Indicator Model FI-21 is a precision gas analyser which is adapted to measure the % volume
concentration of any of the commonly used gas in a mixture of air or oxygen for solvents, fumigation, gas
purity and anaesthetic gas.
The standard instrument is calibrated for eight selectable gas readings on the direct digital display.
The FI-21 operating principle utilises the highly accurate measurement with CCD and Fourier analysis
technology and electronic circuitry to provide direct digital readout.
The FI-21 is equipped with a built-in sample draw pump for ease of use.
This instruction manual is a guidebook how to operate the Model FI-21. Not only beginner users but also
experienced users have to read this manual and start the operation after understanding the contents well.
This instrument is to be used for the purposes listed in this manual and the attached measuring gas
specifications.
For your Safety - the following marks are applied in this manual.
DANGER: It means the matter that causes a serious damage on human beings directly.
WARNING: If the instrument is operated not following by the manual, it causes a serious damage on
human beings or objects.
CAUTION: If the instrument is operated not following by the manual, it causes some damage on human
beings or objects.
NOTE: Manufacturers advisory comment
As the kinds of measurable gas and range are different depending on the type of FI-21, refer to the attached
measuring gas specification. For standard models, refer to the attached “each TYPE measuring gas
specification”.

1.0 Parts and Function
1
POWER key:
Press this key to turn the power on until buzzer beeping. Keep pressing the key approx. 3 seconds to turn
the power off. When pressing the POWER key and (7) ENTER key, you can enter the “SETTING MODE”.
2
LCD Display:
Concentration is displayed. And also, time, battery remainder, measuring gas and base gas are displayed.
3
LED for “SAMPLING”:
While the internal pump is working, this LED is on.
4
PUMP key (CANCEL):
When this key is pressed once, the internal pump starts to work. When the key is pressed
again, the pump stops.
(Contents selected by ｢▼, ▲keys｣are cancelled by this key.)
5
SAVE key (▼key ):
Information about Time/ Date, Measuring Gas, Base Gas, Displayed Concentration is saved by this key. The
maximum number of data points is 100.
(This key is used to enter numbers or to move the cursor.）
6
RANGE key (▲key):
Position of the decimal point on the concentration display can be moved by this key.
(This key is used to enter numbers or to move the cursor.）
7
AIR CAL. Key (ENTER key):
When calibration is performed with standard gas, this key is used.
(Contents selected by 「▼, ▲keys 」are fixed by this key.）
8
Buzzer:
It beeps when the power turns on/off, or when special control or wrong operation is performed.
9
There is a data logger interface under the cover.
* Explanations in the （）are for use during SETTING MODE.

10
Inlet for measuring gas. A specific absorption tube must be connected to the inlet.
Otherwise, the reading might go wrong.
11
Outlet connected to the reference gas chamber. The exhaust from the outlet has to be emitted into
the fresh air at atmospheric pressure.
12
Outlet for measuring gas sucked from the GAS IN.
13
6VDC Interface for the specific AC adaptor.
14
A jack for 0－1VDC output. (cable : option)
15
Cover for the battery box.
16
Fixing screw for the battery cover. It can be open/ close by a screwdriver or coin.
Tubing Structure

2.0 MEASURING MODE (POWER KEY)
2.1 Basic Display for Measuring Mode and Explanation
Display Contents
Status
Gas Name and
Base Gas
Usual measuring mode.
CAUTION
CHECK AIR CAL.
Zero drifting might be occurring. Let the monitor sample the fresh air and
perform AIR CAL.
CAUTION
ABNORMAL
TEMP.
Internal thermistor detects an abnormal temperature.
CAUTION
LOW BATT.
Battery voltage is low. Replace the batteries.
CAUTION
LOW CONTRASUT
Interferometer sensor is getting contaminated. Before the measurement is
performed, the sensor should be replaced or repaired.
CAUTION
LOW BRIGHTNESS
Brightness is getting low. Before the measurement is performed, the sensor
should be replaced or repaired.
CAUTION: When a message “CAUTION ” appears on the LCD, make an appropriate procedure as soon as
possible.

2.2 Procedures from Power ON to Measurement
a) Power turns on by pressing the POWER key until buzzer beeps. And, the initial display (self-diagnostic display)
shows up. It then turns to a display to confirm the setting. After showing the confirmation display for 2
seconds, it goes to the basic display of measuring mode.
CAUTION: This instrument does not indicate a correct reading if the measuring gas and base gas are not
selected properly. Confirm if [Measuring Gas] and [Base Gas] are the ones intentionally selected.
b) After that, two of the messages, [Meas Gas/ Base Gas] and [Air CAL], are displayed by turn as below.
(Refer to WARNIN AIR CAL.)
c) Press the PUMP Key and let it sample enough reference gas (fresh air).
(The color of the display reverses while the pump is operating.)
d) After the indication becomes stable, stop the pump and keep pressing
the AIR CAL key until buzzer beeps.