RPB GX4 08-400 User manual

INSTRUCTION MANUAL
GX4 GAS MONITOR

2
GX4 GAS MONITOR
RPB®SAFETY GLOBAL HEADQUARTERS
2807 Samoset Rd, Royal Oak, MI 48073, USA.
T: 1-866-494-4599 F: 1-866-494-4509 E: [e-mail] rpbsafety.com
RPB®SAFETY ASIA PACIFIC HEADQUARTERS
652 Halswell Junction Road, Hornby South 8042 New Zealand.
T: [phone] F: [phone] E: [e-mail] rpbsafety.com
RPB®, Advancing Your Safety, Nova®, Nova 3®, Radex®, Zytec®, Z-LINK®and T-LINK®are
registered trademarks of RPB®Safety LLC.
For technical assistance contact our Customer Service Department on 1-866-494-4599 or
email: [e-mail]
Form #: 7.20.533
Rev: 3
INTRODUCTION 3
WARNINGS 4
SETUP 5
WEBSITE 7
OPERATION 12
MENUS 15
SENSOR CHECK 16
ALARMS 18
MAINTENANCE 19
PARTS AND ACCESSORIES 22
INSTRUCTIONS IN SPANISH 24
INSTRUCTIONS IN GERMAN 39
INSTRUCTIONS IN FRENCH 54
INSTRUCTIONS IN ITALIAN 70
CONTENTS
Read all instructions and warnings before using this product.
Keep this manual for future reference.

3
INTRODUCTION
The RPB®GX4, model 08-400, tests the quality of compressed breathing air for Carbon
Monoxide and other gases*. Compressed Air is supplied to the unit through the sampling hose at
a constant ow to the sensors for continuous analysis.
KEY FEATURES:
Multiple gasses monitored simultaneously
Traceability of gas levels, temperature, alarms, air ow, sensorchecks and more
Internal web server for remote monitoring, reviewing logs and printing reports
3 inch LCD display and 6 buttons to easily navigate the menus
Exterior lights and alarms
Auxiliary output for external alarms, strobe lights or solenoids
Tamper switch sealed inside of unit
Robust protective housing
Mounts to a Radex ltration system
Optional wall mount bracket
Optional protective travel case
The monitor must be supplied with GradeD air and must be free of oil and water to prevent
contamination of the sensors. A micro-mist lter prior to the Radex air ltration system is
recommended to protect the GX4 and the operator(s). Check with your local regulatory bodies for
more information on local requirements.
The monitor operates at 12 volts DC and can be used with either the 110/240v AC Adaptor
(P/N: 08-430) or the 12v cable with Battery Clips (P/N: 08-431). The unit is designed to
operate in temperature ranges of 14° to 120F (-10 to +50C) and Humidity levels of 5% - 99% (no
condensation).
The RPB®GX4 when used with the Carbon Monoxide Sensor Cartridge (P/N: 08-420-01)
satises the requirements of OSHA rule 29 CFR 1910.134 for carbon monoxide monitoring.
RPB®Safety provides maintenance service through its service centers. In some locations RPB®
has units available for hire while your unit is being serviced. Contact our Customer Service
Department on 1-866-494-4599 or email: [e-mail]
* Visit rpbsafety.com for a list of available gas sensors.
WARRANTY
This RPB®Safety product is covered by a manufacture’s warranty of 1 year. The manufacturer
warranty covers defects in material, workmanship and does not cover damage caused by misuse or
abuse. RPB®Safety’s only obligation and your exclusive remedy shall be to repair, replace or refund
the purchase price of such parts or products upon the presentation of proof of purchase. Maximum
liability is in no case to exceed the value of the RPB®Safety Product involved. Damage to the Sensor
Cartridges by oil or other contaminants will void the warranty on the Sensor Cartridge.

4
GX4 GAS MONITOR
remove any part of the GX4, especially
the air inlet tting or the power and
auxiliary receptacles under any
circumstances. Removing any part will
void all warranties.
*Should the need arise, the unit must be
returned to RPB®Safety to perform any
repairs.
9. Sensors may contain sulfuric acid or
other hazardous chemicals which are
poisonous, can cause burns or eyesight
loss. Do not allow contact with skin
or eyes. If eyes are exposed to the
chemicals ush thoroughly and seek
medical attention. Always wash hands
thoroughly after handling a sensor
cartridge.
10. RPB®Safety cannot accept any liability
of whatsoever nature arising directly
or indirectly from the use or misuse
of RPB®Safety products, including
purposes that the products are not
designed for.
11. RPB®Safety is not liable for damage,
loss or expense resulting from the
failure to give advice or information
or the giving of incorrect advice or
information, whether or not due to
RPB®Safety’s negligence or that of it’s
employees, agents or sub-contractors.
!WARNINGS!
1. When correctly installed and
maintained, the RPB®GX4 monitors the
level of relevant gasses in the breathing
air. It DOES NOT remove any gasses
from the air.
Only gasses relating to the inserted
cartridges can be detected. Ensure you
install all necessary cartridges for your
application.
2. Do not use this unit until you have
been trained in its operation by a
qualied individual appointed by your
employer. Failure to adhere to the
user’s instruction manual could result in
serious injury or death.
3. Leave work area immediately if the
monitor alarm sounds, check air source
and wait until alarm mode stops. If it
continues, verify sensor calibration or
change your air source.
4. The RPB®GX4 model 08-400 is
not approved for use in hazardous or
explosive atmospheres.
5. Do not cover the warning alarms that are
attached to the unit.
6. Regular testing of the alarm and
cartridges is required to detect system
failures and calibration. Always wear
hearing protection when testing the
alarm.
7. Do not open the monitor casing. The
unit is sealed closed and equipped with
a tamper switch. If the tamper switch is
activated and/or the seal is broken it will
void all warranties.
8. Only remove replaceable parts as listed
in the parts and accessories. Do NOT

5
BEFORE YOU USE YOUR GX4
Unpack the unit from the shipping carton
and remove the shrink wrap from the sensor
cartridge. Read all instructions and warnings
that are included with the unit. Dispose of the
removed packaging responsibly making sure
there is nothing important left inside.
REGISTRATION:
Go to: http://go.myrpb.com/GX4-reg to
register your GX4 and be notied of software
updates and important product information.
UPDATES
The GX4 rmware should be updated
regularly to ensure you have access to the
latest features and maintain compatibility
with the latest cartridges. Visit http://
go.myrpb.com/GX4-Update for information
on the latest software and how to upgrade
your unit.
SENSOR CHECK:
Checks should be performed when a new
cartridge is installed and monthly thereafter.
This will insure the cartridge is within
calibration and providing adequate protection.
Follow the Sensor Check instructions on page
17 to check the calibration of the cartridges.
If the cartridge is no longer within calibration,
follow the instructions for removing it and
replace it with a new cartridge.
LOCATION
Place the GX4 in a place that:
The alarm can be heard
Is protected from water and impact
See mounting instructions on pg. 8.
SETUP

6
GX4 GAS MONITOR
WIFI CONNECTION
To unleash the full power of the GX4, it is recommended to connect it to the internet via the built-
in wireless network transceiver. This connection allows easy rmware upgrades and the unit
hosts a website available to devices on that network. Use the website to stream real-time gas
levels, search through logs or print reports.
The GX4 can operate in two wireless modes. To select a mode in the Menu go to Network and
then Mode. Use the arrow keys to switch between modes and press OK to select a mode. The unit
will restart and resume operation in this network mode.
SETUP CONTINUED
CLIENT MODE:
Use when you have access to a wireless
network {IEEE 802.11 b/g/n}.
The GX4 must be connected to the same
network as your PC/Tablet/Smartphone
Access the GX4 website through your
internet browser.
Multiple GX4s can be connected in Client
Mode to the same network and each
individual GX4 website can be viewed on a
seperate web browser page.
HOTSPOT MODE:
Use to connect directly to your GX4 when you
do not have access to an existing network.
The GX4 Hotspot Mode does not connect
to the internet.
Devices can only connect to one GX4 in
Hotspot Mode at a time.
For multiple GX4s, disconnect from one
before connecting to another.
Note: Although multiple devices can connect,
the GX4 is not a router. When in Hotspot
Mode your device can only communicate to
the host GX4.
To congure your network see page 15.
Client Mode
Wireless
Router
or or
PC Tablet Smartphone
PC
GX4
Client Mode
Internet
Hotspot Mode
or or
PC Tablet Smartphone
GX4
Hotspot Mode
Internet
*Limited
Connectivity
PC
or

7
WEBSITE
The GX4 has an internal website that can be accessed by internet enabled devices. This allows
the user to view information about the unit and change settings such as the network connection.
This is your portal to access the full potential of the GX4.
To access the website for your GX4 from your internet connected device:
IN HOTSPOT MODE:
Browse to http://192.168.1.3/
IN CLIENT MODE:
Locate the IP Address for your unit in the “About” menu.
Make sure the GX4 and your internet enabled device are on the same network.
Type the IP address into your internet browser, http://<IP Address>/
FEATURES
The internal GX4 website provides the following features:
Dashboard Page
Status of the unit (Power, Alarm, Auxiliary...)
Network Conguration
Change Wireless mode (Off, Client, Hotsport)
Change settings or connect to a different network
Status of each cartridge
Type of gas being monitored
Current reading
Last validation date
Expiration date, and more
Logs
Select a date(s) to view logs from
Logs show events such as alarms, sensor checks, warnings, etc.
Export visible logs as a CSV le for all logs or main events
Certicate of Calibration
Printable report of the last sensor checks for each cartridge
To save as a PDF, use a PDF printer driver or a browser with PDF functionality

8
GX4 GAS MONITOR
SETUP CONTINUED
Position the monitor so that the green
brackets on the back line up with the
mounting bracket on the side of the RADEX®,
turn clockwise until the monitor clicks into
place.
Use the wall bracket (P/N: 08-231) and
appropriate screws to secure the wall
mounting bracket to a suitable wall.
MOUNTING TO A RADEX®FILTRATION UNIT
Position the monitor so that the green
brackets on the back line up with the
mounting bracket, turn clockwise until the
monitor clicks into place.
MOUNTING TO A WALL BRACKET
FIGURE 1.1
FIGURE 1.2 FIGURE 1.3

9
Insert the 3/8” O.D. Air Supply Hose (P/N:
08-428) into the push-lock tting on the left
side of the monitor. To disconnect, press the
outside ring of the push-lock and pull the
hose out. Note: Hose can be trimmed to the
desired length.
CONNECT THE AIR SUPPLY
When using Battery Clips (08-431), connect:
Black = Negative
Red = +12V (± 0.5V)
Connect the power supply by screwing it onto
the receptacle on the left side of the unit (next
to the air inlet tting.) Plug the AC Adaptor
into a power source.
Connect the air supply hose to a GradeD
air source regulated to between 7 to 80 PSI
(50-550 kPa). Maximum air ow is achieved
at 20 PSI. It is recommended to supply the
GX4®with 15-20 PSI. Max pressure is 80
PSI. Use the RPB®Regulator Assembly
08-470 to regulate the air pressure.
CONNECTING THE POWER SUPPLY
FIGURE 2.1 betw
een 10-125psig.
FIGURE 2.2
FIGURE 3.1
1 2
+ -
FIGURE 3.2

10
GX4 GAS MONITOR
If using an external alarm device, connect
the plug into the auxiliary outlet. The use of
an external alarm is recommended when the
GX4 cannot be seen or heard by the operator.
The external alarm should be located near
the work area to alert the operators of the
status.
Alternatively, the auxiliary can control a shut
off valve, or other safety device.
CONNECT THE EXTERNAL ALARM
SETUP CONTINUED
To congure your own external device,
use the bare end AUX cable (08-434). It is
recommended to use a qualied electrician
when wiring to ensure you do not damage the
electrodes.
Incorrectly wiring your auxiliary can
permanently damage your unit.
Always use a qualied electrician.
Damage to the auxiliary is not covered
under the manufacturer’s warranty.
FIGURE 4.1
1. Brown - 12V DC
2. Blue - Alarm Out
3. Black - Ground
4. White - Alert Out
5. Green - OK Out
FIGURE 4.2

11
EXTERNAL WIRING DIAGRAM
Monitor
Aux Output
Output Specications V out with external supply = V in-1V V out with battery backup = 11.5V I out max = 500mA
Auxiliary Powered Light Tree External Powered Light Tree
+
-
Battery
13Wh
Protection
&
Management
NPN NPN NPN
1 21
2 3 4 5
V Out Alarm Ground Warning OK
Power Input10-16V DC
1 2 3 4 5
OK
Warning
Alarm
Note: External ground must match that of the power supply. (08-430 has a oating ground, so will adjust to suit.)
1 2 3 4 5
~
Not OK
OK
NC NO
Recommended Failsafe
The foll owing systemprovides the most fail safe prote ction:
Connect the coils ofa relay (12VDC, SPDT) to ports 1 and 5 of the GX4 auxiliaryreceptacle.
Connect your equipment into either the“OK”or “Not OK” positions of the circuit to alert
users of potential dangers.
Pin
1 2 3 4 5
Function Vout
Alarm Ground Warning OK
Voltage (Vin - 1) V
11.5V on Battery 12V DC 12V DC 12V DC 12V DC
Current 500 mA 750 mA 1,500 mA 750 mA 750 mA
1 2 3 4 5
OK
Alarm
Warning
12V
FIGURE 4.3

12
GX4 GAS MONITOR
To turn the unit on, press and hold the “OK”
button until the “rpb” logo appears on the
screen.
POWER ON
Tip: you can store the AC Adaptor between
the tabs on top of the mounting bracket.
OPERATION
Press and hold the “OK” button and the unit
powers down.
POWER OFF
FIGURE 5.1 FIGURE 5.2
FIGURE 6.1

13
GAS DETECTION CARTRIDGES
Each cartridge is represented by a box on the
home screen. Each box shows the gas type,
units of measure and the current reading.
The gas detection sensors are supplied in
individual cartridges. Select the cartridge for
each gas you wish to detect at the correct
alarm threshold for your region.
Visit rpbsafety.com for a list of available
sensors.
The cartridge will appear on the screen in the
box that correlates to the slot it was placed in.
The corresponding light above the screen will
glow red or green to indicate the status.
Make sure the contacts are clean before
inserting a new cartridge. See p. 21 for
instructions.
Insert the cartridge into any of the 4 slots in
the monitor. First locate the top end so the
tabs line up, then push the bottom until it
clicks.
CO 0
PPM
Open
0
- - -
Open
0
- - -
Open
0
- - -
OPERATION CONTINUED
Gas
Value
Unit of
Measure
FI G UR E 7.1 FI G UR E 7.2
FI G UR E 7.3 FI G UR E 7.4
CO 0
PPM

14
GX4 GAS MONITOR
Each monitor comes with 3 blank cartridges.
These should be placed into slots that are not
currently being used to protect the electrical
contacts and air supply manifold.
To remove a cartridge, press the
corresponding release button and the
cartridge will “pop up”.
REMOVE CARTRIDGE
Lift the edge of the cartridge to remove it
fully from the monitor. Replace with a new
cartridge or a blank sensor cartridge.
OPERATION CONTINUED
FI G UR E 7.5
FIGURE 8.1
FIGURE 8.2

15
MENUS
ABOUT
Unit Status, Owner Information, Network,
Power, and Device information. Owner
information can be entered via the web
interface.
DEVICE INFORMATION
Displays information such as:
Serial Number
Firmware Version
UUID/MAC address
SENSORS
Sensor cartridge information on each.
Browse each cartridge for:
Last date checked
Expiration Date
Type of gas sensor
Safe/alarm range
Date of Manufacture
Total run time
More information about each cartridge can be
found in the web interface.
SENSOR CHECK WIZARD
Follow the onscreen prompts to check the
calibration of your sensor cartridges.
NETWORK SETTINGS
Congure a WiFi connection or change
advanced IP settings.
When connecting the GX4 to a network you
may be prompted to enter the network name
(SSID) and the wireless password. If you
do not know these, contact your network
administrator or the documentation that came
with your wireless router.
The IP settings are set automatically by
default. To manually change the settings go
to the network settings menu and enter the
desired settings:
IP Address
Subnet Mask
Default Gateway
DNS Address
DATE
To ensure continuity of the logs, the date is
automatically set by the server. The clock
has a dedicated 10 year battery.
TIME
The time can be changed to display the
current time zone and day light savings time.
The logs are recorded in UTC/GMT and
display according to your settings.
UNITS
The units of measure can be changed
between Metric and Imperial.
ALARM AND AUXILIARY
Test the alarm and check the status of the
auxiliary.
DEVICE SOFTWARE
Factory reset of rmware settings.
Note: Logs are not erased during a factory
reset.

16
GX4 GAS MONITOR
SENSOR CHECK
The gas sensor cartridges come pre-calibrated, but they should be checked regularly to ensure
they are still calibrated within government regulations.
Select “Menu” “Sensors” ”Check Sensors”, then follow the prompts on the display menu to
run a Sensor Check on each cartridge.
You will need:
Zero Air Bottle (08-460) containing 20.9% Oxygen in Nitrogen
 Control Air Bottle(s) specic to the gas of the cartridge(s) being checked
Calibration Kit (08-450) to connect the bottles to the GX4
IMPORTANT: Alarms will be disabled. You must conrm the monitor is not in use. Always wear
P.P.E., such as face and respiratory protection, and work in a well ventilated area when working
with compressed air and hazardous gases.
Calibration Gas should be supplied between 1 and 4slpm or via a pressure regulator. Using the
08-461 and 08-451, up to 40 calibration checks can be performed.
Connect the test air bottles to the air inlet. Figure 9.2 is an example of the on-screen
display during a sensor check.
The unit will conrm if the cartridge(s) are still in calibration or not. If the cartridge(s) pass, you
may proceed to checking the next cartridge(s) or using the monitor. If the cartridge(s) are no
longer in calibration, replace the cartridge(s) with a new one(s).
Sensor Checks are recorded into the Logs and Certicates can be generated using the web
interface.
WIZARD - INFO
You will need:
Zero Air: 08-460
Control Air
Cal. Kit: 08-450
FIGURE 9.1 FIGURE 9.2

17
SENSOR CHECK CONTINUED
SENOR CHECK OPERATION
DO NOT REMOVE THE CARTRIDGES
DURING A SENSOR CHECK.
1. Disconnect air supply.
2. Press the “Menu” button.
3. Select “Sensors”.
4. You will need: Zero Air: 08-460,
Control Air (select depending on type of
sensor being checked). Calibration Kit:
08-450
5. Ensure you are wearing proper P.P.E.
and are in a well ventilated area.
6. Agree to disable the alarms.
7. Select Control Gas type.
8. Connect gas and open the valve.
9. Start the test.
10. Test pass or fail.
11. Close the valve and disconnect the Air.
12. Connect Zero Air and open the valve.
13. Close the valve and disconnect the Zero
Air.
14. If the sensor failed, remove it from the
unit and replace it with a new cartridge.
15. Reconnect to the air supply to resume
regular operation.

18
GX4 GAS MONITOR
The alarm will sound in the following
scenarios:
Concentration of any gas being monitored
exceeds the allowable limits set by the
cartridge
Software becomes unresponsive
Air supply is lost
Cartridge is missing
Battery is low
The screen will display which gas and
cartridge is detecting the alarm. Also, the
light above the affected slot on the screen will
turn red.
The alarm can be silenced by pressing the
“Silence” hot key button under the screen.
This will silence the alarm for 30 seconds.
If the gas concentration is still above the
allowable limit the alarm will sound again.
All alarms and silence events are recorded in
the event logs.
It is recommended that an external alarm
system be wired to the Auxiliary outlet.
CARTRIDGE REMOVAL
Upon removal of a cartridge, a warning
message will appear on the screen. If a
response to this warning is not made within
30 seconds, the alarm will sound. This is a
safety feature to detect a cartridge coming
out of the unit unintentionally.
ALARMS
BATTERY
Although the GX4 is designed to be run
on external power, it has a built in Lithium
Polymer battery. The battery is intended
for backup purposes in the event of a power
failure.
Under normal operation the monitor can run
for up to 24 hours on battery power.
The status of the battery is shown on the
home screen as per Fig. 9.3
Note:
The unit requires 10 seconds to read the
battery level after the unit is turned on.
FIGURE 9.3
Plugged In/
Charging
Fully
Charged
Battery
Low

19
To remove the manifold for inspection,
press in the green clip so it can be pulled out
through the notches of the monitor case.
In the back of the GX4, there is a manifold (to
distribute the air to the sensors) comprised of
a clear tube with endcaps. This needs to be
checked regularly to ensure it is clear of oil
and debris. Note: Evidence of oil indicates an
air supply issue that needs to be resolved.
MAINTENANCE
MANIFOLD CHECK AND REPLACE
At the base of the manifold is a push-lock
tting with a green ring. Pull out the manifold
while pushing on the ring.
Rotate the manifold so it is sticking straight
out from the back of the monitor.
FIGURE 10.1 FIGURE 10.2
FIGURE 10.3 FIGURE 10.4

20
GX4 GAS MONITOR
To replace the manifold, insert the tapered
end into the green ring of the push-lock tting
inside the back of the monitor. Orient the
holes in the manifold towards the sensors.
Rotate the manifold into the back of the
monitor so the clip goes into the notches
on the back of the monitor making sure it is
securely clipped in.
After removing the manifold, inspect it from
all sides to make sure all of the holes are
clear and that there is no oil or debris inside
of the tube. DO NOT DISASSEMBLE THE
MANIFOLD. If there is oil or debris inside of
the manifold a replacement manifold (P/N:
08-422) must be used.
If the Mounting Brackets (P/N: 08-425)
break, you can replace them by removing the
two screws securing each bracket. Remove
the broken bracket and replace with a new
bracket. Secure the new bracket with the
provided (UNC 10-24 x ¾”) screws.
REPLACE MOUNTING BRACKETS
MAINTENANCE CONTINUED
FIGURE 10.5 FIGURE 10.6
FIGURE 10.7 FIGURE 11.1