Riken Keiki SP-220 FUM User manual

Portable Gas Leak Detector
SP-220 Series
SP-220(TYPE FUM)
SP-220(TYPE SC)
Operating Manual
Part Number: 71-0408
Revision: P2
Released: 5/15/17

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Contents
1. Outline of the Product.....................................................................................................................................3
Preface............................................................................................................................................................3
Purpose of use................................................................................................................................................3
Definition of DANGER, WARNING, CAUTION and NOTE ............................................................................3
2. Important Notices on Safety...........................................................................................................................4
2-1. Danger cases...........................................................................................................................................4
2-2. Warning cases.........................................................................................................................................5
2-3. Precautions..............................................................................................................................................6
3. Product Components......................................................................................................................................8
3-1. Names and functions for each part .........................................................................................................8
4. How to Use...................................................................................................................................................11
4-1. Before using the detector ......................................................................................................................11
4-2. Preparation for start-up ......................................................................................................................... 11
4-3. How to replace the batteries..................................................................................................................11
4-4. How to start the detector.......................................................................................................................13
4-5. Basic operating procedures...................................................................................................................15
4-6. How to detect.........................................................................................................................................16
4-7. Changing the concentration measuring mode ......................................................................................17
4-8. Perform an air calibration ......................................................................................................................20
4-9. Snap logger ...........................................................................................................................................21
4-10. Peak hold function...............................................................................................................................22
4-11. Changing the alarm and operation sounds .........................................................................................22
4-12. How to turn on the illumination lamp...................................................................................................23
4-13. Power-off .............................................................................................................................................23
5. Display Mode................................................................................................................................................24
5-1. Entering the display mode.....................................................................................................................24
5-2. Concentration displayed gas reading setting........................................................................................27
5-3. Changing the measuring mode (only for fumigation gases).................................................................31
5-4. Log data display ....................................................................................................................................32
6. User Mode....................................................................................................................................................33
6-1. Entering the user mode.........................................................................................................................33
6-2. Date/time setting....................................................................................................................................35
6-3. Clock function ON/OFF setting..............................................................................................................36
7. Alarm function...............................................................................................................................................37
7-1. Gas alarm activation..............................................................................................................................37
7-2. Fault alarm activation ............................................................................................................................37
8. Maintenance.................................................................................................................................................38
8-1. Maintenance intervals and items...........................................................................................................38
8-2. How to clean..........................................................................................................................................40
8-3. Parts replacement .................................................................................................................................40
8-4. Response test…………………………………………………………………………………………………..43
9. Storage and Disposal...................................................................................................................................43
9-1. Procedures to store the detector or leave it for a long time..................................................................43
9-2. Procedures to use the detector again...................................................................................................43
9-3. Disposal of products..............................................................................................................................43
10. Troubleshooting..........................................................................................................................................45
11. Product Specifications................................................................................................................................47
12. Appendix.....................................................................................................................................................48
12-1. Definition of terms................................................................................................................................48

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1
1. Outline of the Product
Preface
Thank you for choosing our gas leak detector SP-220 series (hereinafter referred to as the detector).
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 gas detector and its specifications. It contains information required for
using the detector properly. First-time users and 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 contents of this manual are subject to change without notice for product improvement. It is
also prohibited to copy or reproduce this manual, in whole or in part, without permission.
Regardless of warranty period, we shall not make any indemnification for accidents and damage caused by
using the detector.
Make sure to read the warranty policy specified on the warranty.
Purpose of use
This detector is used to detect a single channel, such as hydrogen phosphide (phosphine: PH3), etc., in air.
It provides two different specifications: TYPE FUM used to detect leakage of fumigation gases and TYPE
SC used to detect leaking of general gases including semiconductor material gases.
Detection results are not intended to guarantee life or safety in any way.
Definition of DANGER, WARNING, CAUTION and NOTE
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.

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2
2. Important Notices on
Safety
To maintain the performance and use the gas detector safely, observe the following instructions of
DANGER, WARNING, and CAUTION.
2-1. Danger cases
DANGER
About use
•This is not an explosion-proof detector. You must not use it to detect gases exceeding the
lower explosive limit (LEL).
•While conducting measurement in a manhole or confined space, do not lean over or look into
the manhole or closed space. It may lead to dangers because oxygen-deficient air or other
gases may blow out.
•Oxygen-deficient air or other gases may be discharged from the gas exhausting outlet of the
detector. Never inhale the air or gases.
•High-concentration (100% LEL or higher) gases may be discharged from the gas exhausting
outlet of the detector. Never use fire near it.

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2-2. Warning cases
WARNING
Sampling point pressure
•The concentration meter is designed to draw gases under the atmospheric pressure. If
excessive pressure is applied to the gas inlet and outlet of the detector, measured gases may
leak out from its inside and may cause dangerous conditions. Be sure that excessive pressure
is not applied to the detector’s gas inlet or outlet while used.
Air calibration in atmosphere
•Perform an air calibration in a fresh air environment. If interference gases exist, the adjustment
cannot be performed properly, thus leading to dangers when gas is present.
Response to gas alarm
•A gas alarm is triggered by changes in temperature and humidity. In such a case, check the
atmosphere for freshness and perform air calibration again in the measured atmosphere.
Example) If the detector is turned on in a room with a temperature of 20ºC and a humidity of
40% RH and taken outside (a temperature of 30ºC and a humidity of 60% RH), an alarm is
triggered by humidity changes. In such a case, perform air calibration outside and measure.
The detector performs air calibration automatically when it is turned on. Even in such a case,
check the atmosphere for freshness and perform air calibration again in the measured
atmosphere.
WARNING
Battery level check
•Before use, check that there remains sufficient battery power. When the detector is not used
for a long period, the batteries may be exhausted. Never fail to replace them with new ones
before use.
•If a low battery voltage alarm is triggered, gas detection cannot be conducted. If the alarm is
triggered during use, turn off the power and promptly replace the batteries in a safe area.
Others
•Do not throw the detector into fire.
•Do not wash the detector in a washing machine or ultrasonic cleaner.
•Do not block the buzzer sound opening. No alarm sound can be heard.
•Do not remove the battery while the power is on.

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2-3. Precautions
CAUTION
Do not expose the detector to oil, chemicals, etc. Do not submerge the detector under water.
•Do not use in a place where the detector is exposed to liquids such as oil, chemicals, etc.
•The detector is not water-pressure-resistant. Do not use the detector where a high water
pressure is applied to it (under a faucet, shower, etc.) or submerge it under water for a long
time. The detector is water-proof only in fresh water and running water, and not in hot water,
salt water, detergent, chemicals, human sweat, etc.
•The gas inlet and outlet are not water-proof. Be careful not to let water such as rainwater, etc.
get into these parts. Because this may cause trouble and gas cannot be detected.
•Do not place the detector where water or dirt gets accumulated. The detector placed at such a
location may cause malfunction due to water or dirt that gets into the buzzer opening, etc.
•Note that drawing in dirty water, dust, metallic powder, etc. will significantly deteriorate the
sensor sensitivities. Be careful when the detector is used in an environment where these
elements exist.
Do not use the detector in a place where the temperature drops below -20
º
C or rises over 55
º
C.
•The operating temperature of the detector is -20 to +55ºC. Do not use the detector at higher
temperatures, humidities and pressures or at lower temperatures than the operating range.
•Avoid long-term use of the detector in a place where it is exposed to direct sunlight.
•Do not store the detector in a sun-heated car.
•Avoid a sudden humidity or temperature change.
•Do not leave the detector in a place with high temperature and humidity for a long time. The
performance of the detector may deteriorate.
Observe the operating restrictions to prevent condensation inside the concentration meter or
gas sampling hose.
•Condensation formed on the detector or taper nozzle causes clogging or gas adsorption, which
may disturb accurate gas detection. Thus, condensation must be avoided. In addition to the
installation environment, carefully monitor the temperature/humidity of the sampling point to
prevent condensation on the detector or taper nozzle. Please observe the operating
restrictions.
Do not use a transceiver near the detector.
•Radio wave from a transceiver near the detector may disturb readings. If a transceiver or other
radio wave transmitting device is used, it must be used in a place where it disturbs nothing.
•Do not use the detector near a device that emits strong electromagnetic waves (high-frequency
or high-voltage devices).
Verify that the flow check display is rotating before using the detector
•If the pump driving indicator is not rotating, gas cannot be measured properly. Check whether
the flow rate is lost.
Never fail to perform a regular maintenance.
•Since this is a precision device, regular maintenance must be performed. Continuing to use the
detector without performing maintenance will compromise the sensitivity of the sensor, thus
resulting in inaccurate gas detection.

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CAUTION
Others
•Exposing the sensor to a gas for a long time or a high-concentration gas may result in that the
gas alarm will remain for a certain period. If the exposure occurs, allow the instrument to draw
fresh air for more than 5 minutes (recommendation), and then perform air calibration again.
•Pressing buttons unnecessarily may change the settings, preventing alarms from activating
correctly. Operate the detector using only the procedures described in this operating manual.
•Do not drop or give shock to the detector. The accuracy of the gas detector may be
deteriorated.
•Do not jab the buzzer opening with a sharp-pointed item. Doing so may cause a failure or
damage.
•Do not remove the panel sheet on the display. The water-proof and dust-proof performances
will be deteriorated.
•Do not affix a label or the like on the infrared port. Infrared communications can no longer be
conducted.
•The operating environment may include gases that have harmful effects on the sensor of the
detector. The detector cannot be used in the presence of the following gases:
(1) High-concentration sulfides (such as H2S, SO2, etc.)
(2) Halogen gases (such as chloride compounds, etc.)
(3) Silicone (Si compounds)
(4) High-concentration solvent gases
Do not use the detector in the presence of the above (1), (2), and (3) gases (such as
high-concentration sulfides, halogen gases, silicone, etc.), which may shorten the sensor life
significantly or cause malfunctions such as inaccurate readings.
In case the gas detector is used for detection in the presence of silicone, etc., be sure to check
the gas sensitivities before using it again.
If the above (4) gas (high-concentration solvent gas) is exposed, a crack may occur in the
detector. Thus, do not use high-concentration solvent gases.
About battery replacement
•Never fail to turn off the power of the detector before replacing the batteries.
•Replace both of the two batteries with new ones at one time.
•Pay attention to the polarities of the batteries.
Usage
•In a low-temperature environment, the operating time is shortened due to the battery
performance property.
•At low temperatures, the responses of the LCD display may slow down.
•Perform air calibration under pressure and temperature/humidity conditions close to those in
the operating environment and in fresh air.
•Perform air calibration after the reading is stabilized.
•If there is a sudden temperature change of 15ºC or more between the storage and operational
locations, turn on the power of the gas detector, let it stand for about 10 minutes in a similar
environment to the operational location, and perform air calibration in fresh air before using it.
•When cleaning the gas detector, do not splash water over it or use organic solvents such as
alcohol and benzine on it. The surface of the gas detector may be discolored or damaged.
•If the gas detector is not used for a long time, turn on the power at least once every six months
and check that the pump draws in air (about three minutes). The gas detector, when not
activated for a long time, may cease to work because of hardening of the grease in the pump
motor.
•If the gas detector is not used for a long time, store it after removing the batteries. Battery leaks
may result in fire, injury, etc.
•When the detector is used again after a long-period storage, never fail to perform air
calibration. For information on readjustment including air calibration, please contact RKI.

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3
3. Product Components
3-1. Names and functions for each part
This section describes names and functions of main unit and battery unit parts and LCD display.
Main unit
No.
Name
Function
(1)
Gas inlet
Collects gases.
(2)
Alarm LED arrays
Blinks or lights up in response to an alarm.
(3)
LCD display
Displays gas concentrations, measured gas name, alarms, etc.
(4) AIR button
Keep this button pressed to perform air calibration. Used to change
the screen and increase numerical values in the setting mode.
(5) MODE button
Press this button to change between display modes. Used to change
the screen and increase numerical values in the setting mode.
(6) POWER button
Turns the power ON or OFF. Used to change the screen and confirm
values in the setting mode.
(7)
Gas outlet
Exhausts the gas drawn into the detector. (Do not block it.)
(8)
Alarm LED arrays
Blinks or lights up in response to an alarm.
(9)
Infrared port
Used during infrared communications.
(10)
Battery cover
Protects the battery. Remove it to replace the batteries.
（
11
）
LED light
Provides you light for work.
(1)
(2)
(3)
(5)
(6)
(7)
(4)
(8)
(10)
(11)
(9)

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Standard accessories
Unpack and check the main unit and accessories.
•AA alkaline battery (2 pcs) (installed)
•Taper nozzle (1 pc)
•Rubber protection cover (1 pc) (Protect the detector from shocks by being hit, etc.)
•Hand strap (1 pc)
•Replacement hydrophobic filters (5 pcs)
•Product warranty (English) (1 pc)
•Product warranty (Japanese) (1 pc)
•Operating manual (English) (1 pc)
•Operating manual (Japanese) (1 pc)
Name Appearance/weight Quantity Name
Appearance/
weight
Quantity
Rubber
protection
cover
1 pc
(attached)
AA
alkaline battery
2 pcs
( installed )
Taper nozzle 1pc Hand strap 1pc
Replacement
hydrophobic
filters
1 bag
(5pcs
included)
Operating
manual
(English)
－ 1pc
Operating
manual
(Japanese)
－ 1pc
Product
warranty
(English)
－
1pc
Product
warranty
(Japanese)
－
1pc
If there is anything missing, contact RKI.
CAUTION
•Do not remove the panel sheet on the display. The water-proof and dust-proof performances
will be deteriorated.
•Do not affix a label or the like on the infrared port. Infrared communications can no longer be
conducted.
Approx.9g
Approx.
70mm
Approx.150mm
Approx.2g
Approx.42g Approx.44g
Approx.14.5mm
Approx.47mm
Approx.42.5mm
Approx.149mm
Approx.1g
Plastic bag
φ16mm
Approx.
50mm

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LCD display
No.
Name
Function
(1)
Operating state display
Displays the operating status in the detection mode. Normal: Blinking
(2)
Flow check display
Displays the flow rate status. Normal: Rotating
(3)
Gas concentration
display
Displays gas concentration and units (ppm).
(4)
Alarm sound display
Displays the setting status of the alarm sound.
(5)
Operation sound
display
Displays the setting status of the operation sound.
(6)
Battery level icon
Displays the battery level.
(7)
Bar meter display
Displays the level of gas concentration in the form of a bar meter.
(8)
Mode display
Displays the measuring mode status.
(9)
Gas name and
message display
Displays the gas name and a message according to the function.
NOTE
•The meanings of battery level icons are as follows:
:Sufficient / :Low / :Needs replacement
If the battery level further drops, the inside of the battery icon starts to blink (. .).
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)

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4
4. How to Use
4-1. Before using the detector
First-time users and users who have already used the detector must follow the operating precautions.
Ignoring the precautions may damage the unit, resulting in inaccurate gas measurement.
4-2. Preparation for start-up
Before use, read and understand the following precautions. Ignoring these may cause inaccurate gas
detection.
• The batteries are installed (with sufficient battery level).
• Check that the taper nozzle and filter are not contaminated.
•Check that the taper nozzle is not bent or has no hole.
•Check that the nipple to which the taper nozzle is attached is not loose.
4-3. How to replace the batteries
When the detector is used for the first time, or when the battery level is low, attach two new AA alkaline
batteries according to the following procedures.
1
Check that the power of the
detector is turned off.
Turn off the power if it is turned on.
2
Turn the lock plate
counterclockwise and open the
battery cover.
3
Remove old batteries and then
put new batteries while
observing the correct polarity.
4
Close the battery cover and
turn the lock plate clockwise to
lock.
Battery cover
Lock plate
Polarity of
dry battery
Dry battery

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CAUTION
•Never fail to turn off the power of the detector before replacing the batteries.
•Replace the batteries in a safe place.
•Replace both of the two batteries with new ones at one time.
•Pay attention to the polarities during replacement. Replace while checking the battery polarities
stamped on the body.
•If the battery cover is not completely locked, the dry batteries may become dislodged or water
may get in through the clearance. Water may also get in if a minute foreign substance is caught
between the detector and battery cover.

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4-4. How to start the detector
When the power is turned on, a self-diagnostic starts, and then the detector enters the detection mode.
Power-on
Press and hold the POWER button until the buzzer blips (one second or longer) to turn on the power.
When the power is turned on, the LCD display changes automatically as shown below, and the detector
enters the detection mode.
(Display example: For fumigation gases)
1
Press and hold the POWER button for one second or longer.
Hold it down until all the LCDs and alarm lamp light up and the buzzer blips.
All LCDs
light up
Date/time
display *
Gas name/
full scale display
Warm-up time
Display example:
Thursday,
October 01, 2015
12:34
Display example:
PH3
(Display for
fumigation gases)
Detection mode
Automatic air
calibration
display
The buzzer blips
once and the
detection mode is
displayed.

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* The date/time display is displayed only when the clock function is enabled. It is not normally displayed
because the clock function is disabled by default.
To enable the clock function, see "6-3. Clock function ON/OFF setting" on page 36.
NOTE
•When powering on after leaving the detector for more than five minutes with the batteries removed,
such as when powering on for the first time, replacing the batteries, etc., or powering on with the
batteries inserted with incorrect polarities, a clock abnormality (FAIL CLOCK) may be triggered.
When it is reset using the MODE button, the detector moves to the date/time setting screen. See
"6-2. Date/time setting" on page 35 and set the date/time.
•Warm-up time (WARM UP) is different depending on the stability status of the sensor.
•If the detector is not used for a long period, warm-up time may be longer or a sensor abnormality
(FAIL SENSOR) may be displayed. In such a case, restart the detector.
•The detector performs air calibration automatically on start-up. If an environment where the detector
is turned on is different from the atmosphere being measured, perform an air calibration again in the
atmosphere being measured.
About LCD backlight
•Pressing the AIR, MODE or POWER button turns on the LCD backlight. The LCD backlight goes off
after 30 seconds or so of no operation.
When an alarm is triggered, the LCD backlight lights up automatically.

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4-5. Basic operating procedures
The detection mode is used after power-on. Gas is detected in the ppm range.
(Display example: For fumigation gases)
AIR buttons
Hold down for
3 secs
<Operation/alarm sound ON/OFF>
MODE button
Hold down for
1 sec
Hold down for
3 secs
<Peak clear>
<Peak hold ON/OFF>
<Display mode>
<Detection mode>
AIR + POWER buttons
AIR + MODE buttons
MODE + POWER buttons
<Air calibration>
<Alarm setpoint change>
<Snap logger record>
Hold down for
3 secs
* Displayed only when the clock function
is enabled. See "6-3. Clock function
ON/OFF setting" on page 36.
Illumination
lamp lights
up

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4-6. How to detect
While the detector is operating in detection mode, put the tip of the nozzle close to the detection area and
draw sample.
The detector measures gas in the ppm range. If a gas is drawn, the detected gas concentration is
displayed with the bar meter on the LCD display.
CAUTION
•Before performing gas detection, attach the taper nozzle provided with the detector to prevent
disturbances by air dust.
DANGER
•While conducting measurement in a manhole or confined space, do not lean over or look into
the manhole or closed space. It may lead to dangers because oxygen-deficient air or other
gases may blow out.
•Oxygen-deficient air or other gases may be discharged from the gas exhausting outlet of the
detector. Never inhale the air or gases.
•High-concentration (100% LEL or higher) combustible gases may be discharged from the gas
exhausting outlet of the detector. Never use fire near it.
WARNING
•The detector is designed to draw gases around it under the atmospheric pressure. If excessive
pressure is applied to the gas inlet and outlet of the detector, detected gases may leak out from
its inside and may cause dangerous conditions. Be sure that excessive pressure is not applied
to the detector while used.
•When performing an air calibration, verify that you are in a fresh air environment before
starting. If interference gases exist, the adjustment cannot be performed properly, thus leading
to dangers when the gas leaks.
•Issuance of a gas alarm indicates that there are extreme dangers. Take proper actions based
on your judgment.
•Before use, check that there remains sufficient battery power. When the detector is not used
for a long period, the batteries may be exhausted. Never fail to replace them with new ones
before use.
•If a low battery alarm occurs, gas detection cannot be conducted. If the alarm is triggered
during use, turn off the power and promptly replace the batteries in a safe area.
•Do not block the buzzer sound opening. No alarm sound can be heard.
•If the main unit is dropped or given a shock, the reading may rise and it may remain so. In such
a case, perform air calibration in a place where the surrounding air is fresh.

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4-7. Changing the concentration measuring mode
In the detector, the detection gas type is factory set to PH3 (phosphine) and the alarm setpoint is factory
set to 0.1 ppm.
The alarm setpoint mode can be changed, depending on the gas to be detected, in three levels for
fumigation gases and two levels for semiconductor material gases.
For the concentration measuring for fumigation gases, the concentration measuring mode or differential
measuring mode can be selected.
In the differential measuring mode, "LOW MODE" and "HIGH MODE" can be switched.
<Concentration measuring mode>
Perform air calibration in the atmosphere.
Then, the mode monitors changes to the air value, showing the correlation between a leakage amount and
the bar display.
(If the measured atmosphere changes, perform air calibration again.)
<Differential measuring mode>
Perform automatic air calibration at regular intervals in the atmosphere of measurement environment. This
is a high sensitivity mode that enables detection of ultralow amounts of leaking gas in the air by eliminating
the environmental effects (other gases, temperature and humidity). Since it can detect a slight amount of
increase in gas concentration even in the environment where a gas is leaking already, this measuring
mode is effective to identify a leaking point.
Gas alarm setpoint for concentration measuring mode (for
fumigation gases)
1
In the detection mode, press the AIR and MODE buttons at the same time.
The alarm setpoint is changed to the next pre-defined setpoint every time the AIR and MODE buttons
are pressed. There are 3 setpoints total, all in the ppm range.

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Gas alarm setpoint for concentration measuring mode (for
semiconductor material gases)
1
In the detection mode, press the AIR and MODE buttons at the same time.
The alarm setpoint is changed to the next pre-defined setpoint every time the AIR and MODE buttons
are pressed. There are 2 setpoints total, all in the ppm range.
Gas alarm setpoint for differential measuring mode (only for
fumigation gases)
1
In the detection mode, press the AIR and MODE buttons at the same time.
The alarm setpoint is changed to the next pre-defined setpoint every time the AIR and MODE buttons
are pressed. There are 6 setpoints total.

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Change of gas alarm sensitivity for differential measuring
mode (only for fumigation gases)
1
In the detection mode, press the AIR button.
The alarm sensitivity changes from LOW MODE to HIGH MODE every time the AIR button is pressed.
NOTE
•For switching to the differential measuring mode (for fumigation gases), see "Change of the
measuring mode" in the display mode on page 31.
CAUTION
•Performing an automatic air calibration in the presence of gas will decrease the bar meter.
•For excessive temperature/humidity changes, the bar meter may increase.
•When the mode is switched from the differential mode to the concentration measuring mode,
check the atmosphere for freshness and perform air calibration again in the measured
atmosphere.
•The gas concentration is displayed in six levels (without a unit).
•Air calibration is performed automatically and it cannot be performed manually.

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4-8. Perform an air calibration
After a high-concentration gas is detected or an alarm is triggered by temperature/humidity changes,
perform an air calibration in the measured atmosphere.
* Before performing air calibration, verify a fresh air environment.
(Display example: For fumigation gases)
1
In the detection mode, hold
down the AIR button.
(Display for fumigation
gases)
2
Release the AIR button when
the display changes from
"HOLD AIR" to "RELEASE".
(Buzzer sound: Three times <blip,
blip, blip >)
▼
▼
The air calibration is done and the
gas detector returns to detection
mode.
(Buzzer sound: Once <blip>)
If air calibration fails, "FAIL AIR
CAL" is displayed.
Perform air calibration again in
fresh surrounding air.