Riken Keiki RX-515 User manual

PT0E-1015
Portable Combination Gas Detector
RX-515
Operating Manual
MARINE USE

1
In the beginning
It is of our great pleasure to purchase Riken portable combination gas detector model
RX-515 this time. This instrument is an explosion-proof type portable gas detector which
is designed to measure the presence of the following gas shown below.
Methane(CH4) :0-100.0%LEL/5~100.0vol%
Oxygen(O2) :0~25.0% vol%
Carbon monoxide(CO) :0-1000ppm
Carbon dioxide(CO2) :0-20.0vol%
This instruction manual is a guide book for operation to use and operate model RX-515.
It is kindly requested to read and understand this content by experienced users
as well as beginners. The following headline shall be shown to carry out the safety and
effective work in this instruction manual.
Model RX-515 is approved by certificate number:
Baseefa 06ATEX0205
Danger
This means that it gives the serious harm to the human life, body or material directly
such as touching high voltage.
Warning
This means that it gives the serious harm to the human body or material if do not
perform the operation according to the instruction manual.
Caution
This means that it gives the slight harm to the human body or material if do not perform
the operation according to the instruction manual.
＊Note
This means the advice in the operation.
InATEX Specifications

2
C O N T E N T S
１．Caution in operation ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ３
２．Name of each part・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ４
３．Operation・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ７
３－１．Check item before operation・・・・・・・・・・・・・・・・・・・・・ ７
３－２．Preparation・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ７
３－３．Start-up and end-up・・・・・・・・・・・・・・・・・・・・・・・・・・ ８
３－４．Flow monitor check・・・・・・・・・・・・・・・・・・・・・・・・・・ ９
３－５．Zero point adjustment・・・・・・・・・・・・・・・・・・・・・・・・・ ９
３－６．Measurement・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ １３
３－７．Peak value・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ １４
３－８．Power pump ON/OFF・・・・・・・・・・・・・・・・・・・・・・・・・・・ １４
３－９．Operation finished・・・・・・・・・・・・・・・・・・・・・・・・・・ １５
４．Alarm・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・１６
４－１．Alarm display・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ １６
４－２．Alarm buzzer & lamp・・・・・・・・・・・・・・・・・・・・・・・・・・１６
４－３．Trouble display・・・・・・・・・・・・・・・・・・・・・・・・・・・・ １７
５．Each function・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ １９
５－１．Setting mode・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ １９
５－１－１．Alarm setting・・・・・・・・・・・・・・・・・・・・・・・・・・ ２０
５－１－２．Date/time setting・・・・・・・・・・・・・・・・・・・・・・・・２１
５－２．LCD back light・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ２１
５－３．Data logger・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ２２
６．Maintenance check・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ２３
６－１．Battery replacement・・・・・・・・・・・・・・・・・・・・・・・・・・２３
６－２．Gas calibration (Span adjustment)・・・・・・・・・・・・・・・・・・・２４
６－３．Filter replacement・・・・・・・・・・・・・・・・・・・・・・・・・・２６
６－４．Sensor replacement・・・・・・・・・・・・・・・・・・・・・・・・・・ ２６
６－５．Daily check and regular check・・・・・・・・・・・・・・・・・・・・・２６
６－６．The replacement of parts・・・・・・・・・・・・・・・・・・・・・・・２７
６－７．Storage or treatment not to use for a long period)・・・・・・・・・・２８
７．Scrap of products・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・２８
８．Trouble shooting・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・２９
９．Definition of words・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・３０
１０．Specifications・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・３１
１１．Detection principle・・・・・・・・・・・・・・・・・・・・・・・・・・・・・３２
１１－１．NDIR method (Non-Dispersive Infrared)・・・・・・・・・・・・・・・・・３２
１１－２．GALVANIC CELL method・・・・・・・・・・・・・・・・・・・・・・・・・３２
１１－３．ELECTRO-CHEMICAL CELL method・・・・・・・・・・・・・・・・・・・・・３２

3
１．Caution in operation (For your safety)
To maintain the function for safety, follow the following instruction.
Warning
・Do not modify nor change the circuit and structure etc. When modify or change, it could
not maintain the function.
・This is explosion-proof product. Battery has to be replaced in non-hazardous zone. The
battery replacement in hazardous zone shall be out of the scope for explosion-proof
product.
・This is explosion proof. Be sure to operate with carrying case on.
・Do not measure in the environment of oxidant gas presence. When measure, it may shorten
the sensor life.
・When measure under organic solvent gas presence, do it in short time and make sensor
cleaning by sucking fresh air after measurement.
Caution
・Do not drop or damage it. This is a fire instrument. When strong shock is given, the
function may be the case not to maintain. Especially, when power is on, the shock from
outside is easy to receive. So, the caution at this point is needed.
・Keep it from the direct splash of water. As this is not of drip-proof, it may cause
the trouble by splash of water.
・Do not give the electric noise such as by walkie-talkie during operation. When receive
the electric noise, it may cause the trouble of reading and instrument.
・When the atmospheric pressure and temperature are changed, it may affect the gas reading.
・When it is condensed, the normal operation is impossible.
・Be sure to mount the internal filter and filter tube.

4
２．Name of each part
①POWER／ENTER SW
This is used for power ON/OFF and entering the figure.
②PUMP／－ SW
This is used when make the pump ON/OFF and deverse the figure.
③ZERO／＋SW
This is used when make zero adjustment and increase the figure.
④PEAK SW
This is used when to let the peak displayed.
⑤MODE／ESC SW
This is used when enter the set mode or cancel the input.
⑥ALARM LAMP
When trouble alarm triggers, this shall blink and light out.
⑦LCD with Back-light
This shows the gas reading.
①
②
③
④
⑤
⑥
⑦
GAS OUT
GAS IN
＊Caution
For CH4, when it goes over 100%LEL, it shall be changed to vol% automatically.
Methane「CH4」
Carbon monoxide「CO」
Oxygen「OXY」
Carbon dioxide「CO2」
Battery condition display

5
【Standard accessories】
①Carrying case with shoulder strap ②Filter tube with flow monitor and junction tube
③Gas sampling probe ④Gas sampling hose
⑤CO2 scrubber ⑥Alkaline

6
【Optional accessories】
①Gas sampling hose 30m with plummet ②Gas sampling hose 30m with float type sampling head
③Gas sampling bag 1L for LEL and VOL and calibration gas cylinder
⑤Absorbent cotton ⑥Water proof filter for filter tube (10pcs.)
⑦Steel storage box
⑧Data logging software ⑨Communication cable

7
３．Operation
３－１．Check item before operation
RX-515 instrument：
・Check that there is no damage for display unit etc.
Filter tube with flow monitor：
・Check the dirt of inside cotton filter. When it gets dirt, replace the cotton filter with
new one.
・When water drops remain, wipe it out and change it with new one.
・Check that these is no crack or damage.
・Check that these is no loose mount on the nipple.
Gas sampling hose：
・Check that there is no crack, creek or twist on the instrument.
３－２．Preparation
（1）Dry batteries are put into instrument.
（2）Put carrying case on to instrument.
（3）Connect the ①instrument(Gas inlet)＋②Filter tube with flow monitor＋③Sampling hose
in turn.
For gas sampling, 3 kinds tip formation are available and change it according to he measuring
environment.
Standard: Sampling hose and gas sampling probe
Optional: Sampling hose (30m)
Floating gas sampling head (30m)
・Connection with sampling hose
Take Curling part by fingers and pull ①arrow mark to ”→”. Put , it to the arrow mark
②←direction. Release the finger from the carling part. Further press and sound “tick,”
and locked.
Curling part
①
②
③
①
②

8
３－３．Start-up and end-up
When press power switch for 3 sec, the power gets on and this shall start up through the voltage
check, filter connection check and sensor connection check.
Press power switch for 3 sec
PROBE OK？
SENSOR CHECK
SENSOR OK
WARM UP 30
Accessory connection check
（Display word atternately）
FILTER OK？
【Sensor normal】
Warm up
Detection mode
ENTER key
FAIL SENSOR
STAND BY
Detection ready
Power off
Press POWER SW for 3 sec
GOOD －BYE
PREPARATION
Date/time display
WARM UP 30
STAND BY
Trouble sensor shall
show “……”.
・Press ENTER key
【Sensor trouble】
Stand-by

9
３－４．Flow monitor check
When the power gets ON, the pump shall start operation check that suction works properly by
filter tube with flow monitor.
At normal sucking（Can see float）
Not sucking（Can not see float）
３－５．Zero point calibration
Zero point calibration for this instrument shall be done for CH4(Methane), O2(Oxygen),
CO(Carbon monoxide) and that of CO2 carbon dioxide by separating them. When calibrate zero
point of CO2, it is required to remove CO2 in air by CO2 removal filter.
Float
Caution
When make zero adjustment, proceed to do it after having fresh air sucked into instrument
for over 1 min. But it is impossible to make correct zero adjustment if gas containing air
is put through instrument. 300-500ppm CO2 is remaining in air. If CO2 in air is directly
sucked into instrument for zero adjustment of CO2, it is impossible to make zero adjustment.
Through CO2 scrubber to the instrument, have air sucked into the instrument for over 1min.
Then, make zero adjustment.