G460
Multi-gas Detector
Operations Manual
1194 Oak Valley Dr, Ste 20, Ann Arbor MI 48108 USA
(800) 959-0329 • (734) 769-0573 • www.goodforgas.com
GfG Products for Increased Safety
Congratulations on your purchase of a high technology product from GfG
– you have made an excellent choice!
Our detectors are characterized by reliability, safety, peak performance and
economic efficiency. They comply with national and international directives.
This manual will help you operate the detector quickly and safely.
Please take note of these instructions before putting the device into
operation!
If you have any questions, please feel free to contact us.
GfG Instrumentation, Inc.
1194 Oak Valley Drive, Ste 20
Ann Arbor, MI 48108 USA
Phone:
Fax:
E-mail:
Website:
(800) 959-0329 or (734) 769-0573
(734) 769-1888
info@gfg-inc.com
www.gfg-inc.com
Table of Contents
Introduction1
For Your Safety1
Application and Purpose
1
Design2
Operation3
Detection Mode3
Turning the Device Off
5
Display Illumination5
Individual Gas Display / Rotating the
Display5
Battery
6
Alarms
6
Resetting Latching Alarms
7
STEL, TWA, Maximum / Minimum
Values8
Peak – Adjusting Peak Values
8
Service Mode8
Main Menu
9
Location – Entering a Location
9
User – Entering User Name
10
Datalogger11
Datalogger(sample screen shots)12
Confidence Blip
13
Options14
Service Menu
14
System Menu
15
Bump Test
16
Calibration16
Inspection
17
Time
17
Options18
Latching Alarm Function
18
Sensor – Enable
18
AutoCal® – Air
19
AutoCal® – Gas
19
Sensor Menu
19
Zeroing – Adjust Zero Point
20
Calibration21
Alarms – Adjust Alarm Thresholds22
Calibration Dates
22
Information23
CH4 Unit
23
Activate Lights
23
Replacing the Batteries and
the Rechargeable Battery Pack
Module23
Charging the Optional NiMH Battery
Pack24
Cleaning24
Maintenance and Inspection
25
Service – Repair
25
Sensor Types and Detection Ranges . . . 27
Sensor Specifications 28
Technical Data
31
Caution32
Warranty 33
Introduction
For Your Safety
Like any piece of complex equipment, the GfG G460 will do the job it
is designed to do only if it is used and serviced in accordance with the
manufacturer’s instructions.
CAUTION:
For safety reasons, this equipment must be operated and serviced by qualified personnel only. Read and understand the instruction manual completely before operating or servicing this device.
The warranties made by GfG with respect to the product are voided if the
product is not used and serviced in accordance with the instructions in this
manual. Please protect yourself and your employees by following them. The
above does not alter statements regarding GfG’s warranties and conditions
of sale and delivery.
Application and Purpose
The G460 is a handheld detector for personal protection from atmospheric
hazards. The detector measures continuously in diffusion mode and gives
visual and audible alarms if a gas-induced danger arises. The G460 meets
the following approval:
Classified as intrinsically safe for use in
Class I, Division 1, Group A, B, C, and D
Hazardous locations Temp code T3
CSA C22.2 No. 152
ANSI / ISA-12.13.01-2000
UL 913
1
Design
Hook for carrying strap
Display
Keys
Diffusion
inlets
Alarm LEDs
Horn
Contacts for
accessories
Screw
connectors
for pump
Battery pack (accessible from back of unit)
2
Operation
GfG recommends frequent verification of accuracy.  The safest course of
action is to verify accuracy with a known concentration of gas prior to each
day’s use.  If the readings are less than 90% or greater than 120%
(-10% to +20% accuracy) the detector must be calibrated before use.
In compliance with c-CSA (Canada) the following requirements must
be observed:
CAUTION: Before each use, sensitivity must be tested on a known
concentration of CO, H2S and combustible gas (depending on which sensors are installed) equivalent to 25 to 50% of the full scale concentration.  Accuracy must be within -0 to +20% of the actual measurement.
Accuracy may be corrected by performing an AutoCal® adjustment (see
calibration).
Detection Mode
Turning the Device On
Turn the G460 on in an environment known
to be free from gases and / or vapors.
Press the right key to turn the G460 on.
After turning the G460 on, the display gives a short message about the
detector, the user, the location (this message can be set in service mode).
Should the date for the next inspection pass, the G460 gives an audible
signal and the display reads “Inspection Overdue.” The display also shows
every gas being measured, its detection range and the set alarm thresholds.
3
NOTE: GfG recommends that you “bump check” the sensors before each
day’s use to confirm their ability to respond to gas by exposing the detector
to a gas concentration which will exceed the alarm set point of the sensors.
4
Turning the Device Off
To turn the G460 off, hold the right key (ZOOM) for approximately 5
seconds.
Display Illumination
Whenever you press a key or any alarm condition is activated, the
display illumination turns on. It turns off automatically after approximately
10 seconds, or when the alarm condition is corrected.
Individual Gas Display / Rotating the Display
The display can be rotated 180° by pressing the right and the left keys
simultaneously.
The G460 allows the user to store and display time-weighted averages
(TWA), short-term exposure levels (STEL), peak values (MAX) and
minimum values (MIN). The stored values have the following meanings:
STEL:
The STEL (short-term exposure level) is the average value
of the gas concentration over a period of time, which is
determined by the short-term period. Short-term exposure
levels are used to evaluate exposure peaks. The short-term
period is typically set to 15 minutes.
TWA:
The time-weighted average (TWA) is the average value of the
gas concentration over an 8 hour working shift. For calculating
the total dose, the G460 uses all gas levels measured since the
detector was turned on.
MIN / MAX: Minimum and peak values measured since the detector was
switched on or since the stored values were reset.
Press ZOOM briefly to view one gas at a time (ZOOM mode). Pressing
ZOOM momentarily while in ZOOM mode will cycle to the next detected
gas.
5
To read the stored values, press and hold the right key while in zoom mode.
Press the key repeatedly to display all other measurement values and the
battery capacity one after the other.
Example – Zoom Display for H2S:
Top left:
Maximum value
Top right:
Actual gas concentration
Bottom left: Short-term exposure level
(STEL)
Bottom right: Time-weighted average
(TWA)
Battery
A fully charged G460 battery pack has a capacity of up to 25 hours of
continuous operation in diffusion mode. The operational time may be
reduced by sampling intervals or alarms. The remaining battery capacity
is indicated by the battery symbol on the left side of the display. The black
area represents the remaining capacity.
When the capacity falls to 4% power save mode is displayed and the G460
gives both a visual (red alarm LED and an “discharged” battery symbol in
the display) and an audible warning.
Alarms
If the measured gas concentration exceeds a pre-set threshold, the detector
immediately gives audible, visual and vibrating alarms. The display also
indicates the exceeded alarm threshold which caused the alarm. A loud
acoustic alarm (103 dB at 30 cm), bright flashing LEDs and a vibrating
alarm warn of dangerous gas concentrations. In case of a gas alarm the
whole display turns orange or red, depending on the gas concentration and
the exceeded alarm threshold.
The G460 provides three instantaneous alarms for oxygen (O2) and
combustible gases (CH4), and two alarms for toxic gases (CO, H2S). The
G460 warns the user of dangerous conditions caused by oxygen deficiency
or enrichment and levels of combustible and toxic gases which exceeds the
alarm threshold.
6
For toxic gases there is an additional alarm for exceeded time-weighted
averages and short-term exposure levels (TWA and STEL).
Number
of Alarms
Alarm Type
Sensors
Instantaneous
Value (AL)
Oxygen
Combustible
gases
Toxic gases
3
3
Short Term
Value (STEL)
Toxic gases
1
Long Term
Value (TWA)
Toxic gases
1
Over Range
All
1
An instantaneous alarm is activated
immediately if the gas concentration
exceeds or falls below a pre-set
threshold. The alarm values are
adjustable.
The short-term value (STEL) is the
average concentration over a short
period of time (e.g. 15 minutes).
The STEL alarm is not latching; it
resets automatically as soon as the
concentration falls below the threshold.
The long-term value (TWA) refers to an
8-hour shift and calculates the average
concentration. The TWA alarm cannot
be reset. It is only de-activated if the
detector is switched off.
The screen will display
Under Range
All
1
The screen will display
2
Description
Resetting Latching Alarms
When alarm 2 and 3 are set to latching you must reset an activated alarm
by pressing the RESET key. Alarm 1 will automatically reset when the gas
danger has passed.
If the detection range of the LEL sensor is exceeded, the display will read
“
”, indicating it is over range, instead of a value for gas
concentrations above 110% LEL. To protect the sensor from damage, the
device turns off the sensor. However, the audible and visual alarms and the
“
” message remain active. The alarms must be reset by pushing the
RESET key. The display will read: “Fresh air?” If you have made sure that
there is no combustible gas in the vicinity of the CH4 sensor, press yes
to resume detection.
7
STEL, TWA, Maximum / Minimum Values
When you turn the G460 on, the unit begins to measure continuously in
diffusion mode. All concentrations are shown on the display. In addition,
short term and long-term averages (STEL and TWA) are calculated for toxic
gases; for non-toxic gases peak and minimum values (MAX and MIN) are
stored. The stored values can be read from the display by accessing the
applicable display mode.
WARNING: To avoid possible personal injury, do not turn off the detector
during a work shift. TWA, STEL and MAX readings are reset
when the G460 is turned off.
Peak – Adjusting Peak Values
During peak mode (activated by pressing
the left key PEAK), peak values can be
monitored and displayed. The display shows
an animated symbol in the bottom left
corner.
Within zoom display the peak value will be displayed instead of the gas
concentration.
Pressing RESET during peak mode will reset the peak memory to the
current gas concentration. Pressing RESET during zoom display will
reset the peak memory and the peak value memory to the current gas
concentration.
By pressing PEAK again peak mode is deactivated.
Service Mode
Hold the middle key (RESET) for approximately 5 seconds to activate
service mode. In the service mode the program parameters of the G460
can be adjusted and changed. A menu highlights the different adjustment
possibilities. Several menu points require an access code (0011) to prevent
accidental modification of important functions. In service mode all alarms
are deactivated.
All adjustments in service mode are menu-controlled. The 3 keys stand for
8
the function which is shown in the bottom line of the display. The main menu
is displayed first when you enter service mode.
Main Menu
The menu points are:
1.Location (the physical location of the G460)
2.User (user identity)
3.Datalogger (adjust datalogger function)
4.Confidence blip (adjust intervals)
5.Service (start service menu)
6.AutoCal®
7.Options (adjust alarm volume and display contrast)
The keys’ functions are explained in the bottom line of the display. In the
main menu the keys have the following functions:
Left key (↓↓scroll down)
Middle key (SELECT) select menu point
Right key (DETECT) back to detection
mode
Location – Entering a Location
From a deposited table one location out of a hundred possible locations
can be selected. The first two digits stand for the number of the table entry.
With the exception of “00” all other 99 entries can only be edited with a PC.
Within “00” up to 15 letters / figures can be entered, which will be stored as
operational place in the G460. Entry is automatically completed when the
cursor reaches the end mark (>).
When Location is selected by the middle key (SELECT), the following is
displayed, and the keys have the following functions:
First a location number is specified:
EDIT - Change location name
EXIT - Back to main menu
­­ ↑↑
- Change location number
9
After selecting a location number (by pressing the right key – ↑↑) the
location entry will be displayed. To change the location, press the left key
(EDIT).
The following is displayed, and the keys have the following functions:
ABC↓ ↓ - Select symbol – move down
<<>> - Enter the blinking letter for figure and move the cursor to the right
012↑↑ - Select symbol - move up
User – Entering User Name
From a deposited table one entry out of ten possible entries can be
selected. The first two digits stand for the number of the table entry. Except
for “00,” the other 9 entries can only be edited with a PC. Within “00” up to
15 characters can be entered, which will be stored as “IDENTIFICATION”
in the G460. Entry is automatically completed when the cursor reaches the
end mark (>). The entry process for user name (ID) is the same as that of
the location entry.
EDIT - Change location name
EXIT - Return to main menu
↑↑
- Change identification number
10
Datalogger
Within the “datalogger” menu point different settings can be accessed:
Full shows the used percentage of the
datalogger memory
↓↓ - Jump to the next parameter
ERASE- Deletes data. A security prompt will appear (delete data?) → confirm with yes (right key), deny with no (left key)
EXIT - Back to main menu
If Mode is selected, the instantaneous value
(Instant), average value (Average) or peak
value (Peak) can be chosen with the left or
right key.
If Interval is selected, the data recording
interval can be set between 1 second and
60 minutes by pressing ↓↓ and ↑↑
11
Datalogger (sample screen shots)
12
Confidence Blip
Within the Confidence blip menu point, the interval between confidence
blips can be chosen.
The confidence blip can be heard in
intervals of 15 to 90 seconds or be
deactivated (- -).
↓↓ - Scroll down
SELECT - Confirm interval
EXIT
- Return to main menu
13
AutoCal®
The AutoCal® menu point can be selected in the main menu or occurs
automatically when the calibration adapter (Smart Cap) is connected.
Within the AutoCal® menu point the device can be calibrated with fresh air
(ZERO) or test gas (CAL).
AIR
- AutoCal® with fresh air
GAS
- AutoCal® with test gas
EXIT
- Back to main menu
Options
Within Options you can adjust
• Anti-Lazy battery syndrome
• The buzzer volume (90 dB or 103 dB)
• The screen contrast: 1 (very low) up to 15 (very high)
↓↓
- Scroll down
CHANGE- Change selected parameter
EXIT
- Back to main menu
Note: Rechargeable batteries inherently have a tendency to loose capacity
over time. Some of this loss manifest itself as “voltage depresion” (aka Lazy
Battery). With GfG’s advanced battery management technology, some of
the lost capacity can be restored using the “Anti-Lazy Battery” feature. The
overall battery life can be extended if this feature is used at least once every
three months.
Service Menu
Enter the service menu by selecting Service. Within the service menu the
G460 program parameters can be adjusted.
This menu point is only accessible with the code “0011.” The code prevents
important functions from being changed by mistake or by unauthorized
persons. In service mode all alarms are suppressed.
14
ABC↓↓ -
<<>> -
012­­↑↑
-
Previous digit
Enter (cursor moves automatically to the next position). By holding the key the last entry will be deleted and the cursor will move one position back.
Next digit
After entering code “0011,” you enter the service menu (see System Menu)
and can perform general adjustments (zeropoint, span, alarms, calibration,
etc).
Select Sensors to adjust sensor‑specific
functions (alarms, calibration, etc).
DETECT - Back to detection mode
System Menu
Within the System menu the following adjustments are possible:
Bump Test
- Date of next bump test
Calibration
- Date of next calibration
Inspection - Date of next inspection
Time
- Date and time
Options - Change language, vibrating alarm, latch and auto save settings
Sensor-Enable - Turn sensors on or off
AutoCal® - Air - Enable AutoCal® to zero specific sensors
AutoCal® - Gas- Enable AutoCal® to adjust the sensitivity of specific sensors
Information
- Software version, instrument serial number, battery type, etc.
15
Bump Test
The date of the next bump test can be entered under the Bump Test
menu. When the date arrives, the G460 will automatically sound an alarm.
If the bump test date passes, the G460 will give a reminder every time it is
switched on.
To change the interval:
↓↓ - Decreases value
EXIT - Confirms value
­­↑↑
- Increases value
Calibration
The date of the calibration can be entered under the Calibration menu.
When the date arrives, the G460 will automatically sound an alarm. If
the calibration date passes, the G460 will give a reminder every time it is
switched on.
To change the inverval:
↓↓ - Decreases value
EXIT - Confirms value
­­↑↑
- Increases value
16
Inspection
The date of the next maintenance or inspection can be entered under the
Inspection menu. When the date arrives, the G460 will automatically sound
an alarm. If the inspection date passes, the G460 will give a reminder every
time it is switched on.
>> - Moves to the next parameter
SELECT - Selects the blinking parameter
EXIT - Back to system menu
To change a parameter:
↓↓ - Decreases value
EXIT - Confirms value
­­↑↑
- Increases value
Time
The time and date can be adjusted under the Time Menu.
>> - Moves to the next parameter
SELECT - Selects the blinking parameter
EXIT - Back to system menu
To change a parameter:
↓↓ - Decreases value
EXIT - Confirms value
­­↑↑
- Increases value
17
Options
In the Options menu point, the language can be changed, the vibrating
alarm can be activated or deactivated and the latching and auto save
features can be turned on or off.
>> - Moves to the next parameter
SELECT - Selects the blinking parameter
EXIT - Back to system menu
Latching Alarm Function
The detector is shipped with the latching alarm function disabled. If the
alarms are set to latch, the audible and visual alarms will persist until the
alarm is acknowledged by pressing the center key (RESET). To enable
latching alarms, press the left key (↓↓) until Latching is highlighted. Press
the center key (CHANGE) to enable latching alarms.
Sensor – Enable
Each individual sensor can be activated or deactivated for each
measurement. This function is necessary for applications in which a gas
does not need to be measured or if the G460 will be upgraded with different
sensors.
ON or OFF indicates the status of the
sensor (active or inactive).
↓↓ - Scroll down
On/Off - Turns sensor on or off
Exit
- Return to system Menu
18
AutoCal® – Air
This menu point is to enable AutoCal® for sensors, using fresh air (zero
calibration). Generally all sensors will be zero calibrated and show “ON.”
↓↓ -
On/Off -
Exit
-
Scroll down to next sensor
Calibration/non-calibration of sensor in AutoCal® program
Return to service Menu
AutoCal® – Gas
This menu point is to enable AutoCal® for sensors, using a test gas (gas
calibration). Generally all sensors (except O2) will be calibrated and show
”ON.”
↓↓ -
On/Off -
Exit
-
Scroll down to next sensor
Calibration/non-calibration of sensor in AutoCal® program
Return to service Menu
Sensor Menu
The following functions refer to individual sensors in the G460. In the sensor
menu each individual sensor can be selected. The adjustments are only
valid for the selected sensor.
For a description of sensor-specific adjustments, the O2 sensor is being
used as an example. The adjustment options are the same for all sensors.
↓↓ - Move to next sensor
SELECT - Select sensor
Exit
- Return to service Menu
19
For each sensor, the following adjustments
can be made:
Zero - Adjust the zero point
Calibrate - Sensitivity calibration with test gas
Alarms - Adjust alarm thresholds
Calibration dates - View the date and status of the last calibration and zero
Information - View sensor information
↓↓ SELECT EXIT - Move to next menu point
- Select menu point
- Return to service menu
Zeroing – Adjust Zero Point
To adjust the zero point, the sensor menu point Zero must be selected.
START -
GAS -
EXIT -
Start zero point adjustment
Enter zero gas concentration
Back to “O2 menu”
After entering GAS the display reads:
↓↓
-
Zero gas value decreases by one unit
EXIT
-
Enter Value
↑↑
-
Zero gas value increased by one unit
NOTE: To set the zero point for oxygen, supply the unit with 100%
nitrogen through a calibration adapter.
20
Calibration
During calibration, the sensitivity of the G460 is adjusted. Before starting
calibration, make sure that the zero point adjustment has been done.
For calibration you need a suitable test gas, e.g.:
Detection Range Test Gas
TOX
Carbon monoxide (CO), hydrogen sulfide (H2S)
Fresh air or test gas with 20.9% volume oxygen (O2) in
OX
nitrogen (N2)
EX
Methane (CH4)
NOTE:
Please call GfG for the correct calibration gas for your instrument.
To adjust sensitivity, the sensor menu point Calibrate has to be selected.
START -
Start calibration
GAS
-
Enter calibration gas concentration
EXIT
-
Return to O2 Menu
After entering GAS the display reads:
↓↓
-
Decreases calibration gas value by one unit
EXIT
-
Saves value
↑↑
-
Increases calibration gas value by one unit
21
Alarms – Adjust Alarm Thresholds
The G460 provides 3 alarm thresholds for each non-toxic gas (O2, CH4).
For each toxic gas (H2S, CO) the G460 provides 2 alarm thresholds. The
alarms are triggered when the gas concentration exceeds or falls below the
threshold. For toxic gases an additional alarm for exceeded long-term and
short-term averages can be set.
After selecting the sensor menu point
Alarms the following reading is displayed
(here, for an O2 sensor):
↓↓
-
Scroll down
EDIT
-
Change alarm threshold
EXIT
-
Back to O2 menu
After selecting the alarm thresholds by pressing EDIT (e.g.: Alarm 1), the
value can be entered:
↓↓
-
Decreases alarm value by one unit
EXIT
-
Back to Alarm menu
↑↑
-
Increases alarm value by
one unit
WARNING: If alarm points are set to off (--), the user will not be notified
of an alarm condition. This could result in injury or death.
Calibration Dates
Within the sensor menu point Calibration
dates, the date of the last calibration can be
displayed, as well as if the calibration was
successful (√) or not ().
22
Information
In this menu point, specific information for the sensor can be displayed:
Type of sensor (ID) - Type of sensor
Serial number (SN) - Serial number
Detection range (NR) - Detection range
Temperature range (TR) - Temperature range
CH4 Unit
A unit equipped with a CH4 sensor has an additional Unit and gas menu
point in which you can set the CH4 sensor to detect in % LEL or % volume
along with a variety of combustiable gases.
Activate Lights
The G460 provides an optional battery pack with lights. The lights can be
switched on or off by holding down the left key for approximately 5 seconds.
The lights are useful when the device is tied to a cord and lowered down
into a sewer system. Using the lights can prevent the device from being
dunked under water.
Replacing the Batteries and the Rechargeable Battery Pack
Module
NOTE: Batteries must not be replaced in hazardous locations. Replace only in non‑hazardous locations.
Turn the detector off before you replace the batteries. To replace the
batteries or the supply module, unscrew the two screws on the front of the
detector and pull the whole module backwards or insert the allen wrench
through one of the screw holes to push the module backwards.
When the alkaline batteries have to be replaced, use a thin object to push
the two battery cells out through the PCB holes. When inserting new
batteries, check for the correct polarity (see plastic holder). Use only size AA
batteries, Duracell MN1500 LR6. Secure the supply module by replacing the
two screws.
23
Charging the Optional NiMH Battery Pack
WARNING: The detector must not be charged in a hazardous location. Only
charge in non-hazardous atmospheres of 4 to 122°F (-20 to 50°C). Charge
the detector using only the recommended
charging adapter. Do not use any other
charging adapter, as a fire or an explosion
may result. Do not connect the charging
adapter to voltages other than those used
in North America, or an explosion may
result.
The rechargeable G460 battery pack
module can be charged with the GfG
Drop-in Charger. The Drop-in Charger is also available as a vehicle charging
unit. Make sure the maximum connected voltage does not exceed 30 V. To
charge the G460, simply slide the device into the charging unit. The G460
will beep and then display either “quick charge” or “trickle-charge.” These
two modes indicate the charge status of the G460. When the rechargeable
battery pack is completely depleted, it will take approximately 6 hours to
recharge in quick-charge mode. Then the Drop-in Charger will automatically
switch to trickle‑charge mode so that it is impossible to overcharge the
battery pack. Both charging modes are indicated on the G460’s display.
When the charger changes to trickle-charge mode, the battery pack has
reached at least 80% of its capacity. An additional 2-3 hours of trickle-charge
will fully charge the detector. The G460 will keep charging as long as it is
plugged into the charger. Charging can be stopped by removing the G460
from the Drop-in Charger or by unplugging the charger.
Cleaning
The casing can be cleaned with a damp cloth. Never use solvents or
detergents!
24
Anti-lazy Battery Deep Discharge Cycle
NiMH batteries can develop voltage depression. Even though the normal amount
of power is stored in the battery, the peak voltage in “lazy” batteries drops more
quickly than usual. To the user it appears the battery is not holding its full charge.
Fully charged instruments that fail to operate for the expected time should be
exercised by means of the “anti-lazy battery” deep discharge cycle.
G450 instruments with version 3.41 and higher firmware have the enhanced
“anti-lazy battery” feature. GfG recommends updating your instrument firmware
and updating to the latest version charger cradle and power adapter to take full
advantage of the latest “anti-lazy battery” options. The latest version has a blue
case and the serial number ends with a “D”. Contact an authorized GfG service
center or distributor for assistance.
The “anti-lazy battery” procedure is initiated by following these steps:
1. Press and hold the “Reset” button until “Main menu” choices appear
2. Select “Options”, you will need to arrow down the list to select it
3. From the “Options menu” choose “Anti-Lazy-Batt.”
4. Press “Change” to turn on the one-time deep discharge feature
5. Display will show “1X” instead of “Off” to the right
6. Press “Exit” then “Detect” to return the instrument to normal operation
NOTE: Do not turn the instrument off!
7. Allow it to run until the battery is completely drained, then recharge as
normal
If you have the latest version of firmware on the instrument and the latest version
charger cradle and power adapter, when the battery icon shows it is down to
the last 10% remaining voltage the instrument can be placed in the charger and
the instrument will complete the anti-lazy battery deep discharge, then charge
normally.
NOTE:
The instrument needs to be programmed for automatic
activation.
To set the instrument for automatic activation, follow steps 1 through 4 above,
then follow these steps:
5. Choose “Days”
6. Select “Anti-Lazy days”, you will need to arrow down the list to select it
7. Press “Change”
8. Select the desired days for the automatic activation of this feature
9. Select “Exit” twice then “Detect” to return the instrument to normal operation
25
Maintenance and Inspection
Maintenance includes service, calibration and adjustment, as well as repair
if it is necessary. Gas monitoring devices can react differently depending
on environmental conditions. It is important, independent from maintenance
duties, to test the device before putting it into operation each day. Bump
testing before each use is highly recommended.
Service – Repair
WARNING: To avoid personal injury or damage to the detector, use only
the specified replacement parts.
A function test must be executed before the first operation and at least once
a year. This test comprises (depending on use and sensor exposure to
poisons and contamination):
• Check zero point
• Charge battery (optional)
• Check pump (optional) and diffusion inlets
• Test display with standard test gas (bump test) and adjust, if necessary
• Check alarm signals
• Test response time
NOTE:
GfG recommends that you “bump check” the sensors before each day’s use to confirm their ability to respond to gas by exposing the detector to a gas concentration which will exceed the alarm set point of the sensor.
Any G460 repair must be done according to the manufacturer’s instructions
and with genuine spare parts. Return to GfG for proper service.
26
Accessories and Replacement Parts
Aspirator, hand (with wand)
Batteries, alkaline (AA)
Battery hardware kit (includes 6 screws and hex key)
Battery pack, alkaline (without batteries) with vibrator
Battery pack, rechargeable NiMH with vibrator
Battery pack, rechargeable NiMH with vibrator and lights
Cable, data downloading / USB interface (for PC)
Calibration adapter with tubing
Calibration connector
Charger, plug-in (110 VAC) wall pack
(for use with drop‑in charger)
Charger, vehicle
Crocodile clip
Datalogging kit – alkaline
(cable, software and drop-in cradle charger)
Datalogging kit – rechargeable (cable and software)
Drop-in cradle charger (charge and data transfer)
Regulator, (for aluminum calibration gas cylinders)
0.5 lpm fixed flow rate with pressure gauge and on / off knob
Regulator, (for steel calibration gas cylinders)
0.5 lpm fixed flow rate with pressure gauge and on / off knob
Sensor - carbon monoxide, (CO)
0 - 500 ppm
Sensor - hydrogen sulfide, (H2S)
0 - 100 ppm
Sensor - methane, (CH4)
0 - 100 %LEL
(combustible gases)
Sensor - oxygen, (O2)
0 - 25% volume
CO
0 - 300 ppm
Sensor - COSH
H2S
0 - 100 ppm
Sensor - PID
0 - 2,000 ppm
Software, datalogging (CD only)
Part Number
7711-450
4002-001
4003-450
1450-202
1450-211
1450-212
1650231
7771-450
1450225
4001-650
4001-650V
943450
1450235
1450235R
1450220
2603-025
2603-020
1318232
1318236
1460710
1318231
1650730
1460704
1450233
Spare parts and accessories should be stored at ambient temperatures of 32 to 86°F (0 to 30°C).
Storage time should not be longer than 5 years. Electrochemical sensors should not be stored for
more than 6 months. When you store oxygen sensors, be aware that storage reduces the expected
lifetime of the sensor. When storing spare sensors, make sure that the ambient atmosphere is free
from corrosive substances and sensor poisons.
27
Sensor Types and Detection Ranges Warning: To avoid personal injury, use only sensors specifically designed for this detector.
Plug Sensor Part
Number
EC1 1650730
EC1
EC2
EC3
EC2
EC3
PID/
EC2
PL
1460232
1460235
1460018
1460231
1460258
1460260
1460259
1460236
Detection Range Gas
0-500 ppm
0-100 ppm
0-300 ppm
0-1000 ppm
0-2000 ppm
0-25% volume
0-2000 ppm
0-1.00% volume
0-4.00% volume
0-100 ppm
1460238
1460703
1460704
1460710
IR
1460780
* T-Band = Tolerance band
Resolution
Carbon monoxide (CO)
1 ppm
±3 ppm
Hydrogen sulfide (H2S)
0.5 ppm
±0.2 ppm
Carbon monoxide (CO)
1 ppm
±3 ppm
Carbon monoxide (CO)
1 ppm
±5 ppm
Carbon monoxide (CO)
1 ppm
±4 ppm
Oxygen (O2)
0.1% volume ±0.3% volume
Hydrogen (H2)
2 ppm
±50 ppm
Hydrogen (H2)
0.01% volume ±0.02% volume
Hydrogen (H2)
0.01% volume ±0.05% volume
Hydrogen Sulfide (H2S)
0.1 ppm
±0.2 ppm
0-50 ppm Nitrogen Dioxide (NO2)
0-500 ppm
0-2000 ppm
0-100% LEL
0-100% LEL
0-5% volume
T-Band*
Isobutylene (C4H8)
Isobutylene (C4H8)
Methane (CH4)
Propane (C3H8)
Carbon Dioxide (CO2)
28
0.2 ppm
±0.6 ppm
0.1 ppm
0.5 ppm
0.5% LEL
0.5% LEL
0.01% volume
±0.2 ppm
±1.0 ppm
±2.5% LEL
±2.5% LEL
-
Sensor Specifications MK211-6 Catalytic combustion sensor for combustible gases and vapors (GfG part number 1460710)
Response time:
t90: <30 seconds
Pressure
950 to 1,100 hPa: Maximum ±5% of detection range or ±15% of display (1,013 hPa)
Humidity
5% to 90% r.h.: Maximum ±5% of detection range or ±15% of display (55% r.h.)
-4 to 122°F
Temperature
Maximum ±3% of detection range or ±10% of display (68°F or 20°C)
(-20 to +50°C):
2.00Vol.% H2: approx.140%;0.70Vol.% C4H10: approx.72%;
2.20Vol.% CH4: 100%;0.70Vol.% C5H12: approx.71%;
0.85Vol.% C3H8: approx.85%;0.50Vol.% C6H14: approx.55%;
Cross sensitivities at 50% LEL:
The above information refers to the detection range for methane.
It may vary from sensor to sensor and depends on the gas
concentration and on the age of the sensor.
Expected lifetime:
3 years
MK222-2/-3 Photo-ionisation sensor for toxic combustible vapors Isobutylene i-C4H8 (GfG part number
1460703/1460704)
Response time:
t90: <30 seconds
Ionisation potential:
10.6 eV
Kerosene: approx.250%; C8H8: 250%; C7H8: 190%; C6H6: 190%;
Diesel: approx.110; Benzine: approx.90%; C3H60: 83%; C8H18:
Cross sensitivities:
45%; C7H16: 40%; H2S: 30%;
C6H14: 22%; NO: 14%; NH3: 11%; C5H12: 10%;
C4H10=C3H8=CH4=H2=0%
Expected lifetime:
3 years
MK224-1 Infrared sensor for carbon dioxide CO2(GfG part number 1460780)
Response time
t50: <20 seconds
t90: <60 seconds
Pressure
800 to 1,200 hPa: <1.7% of display per 1% pressure change
Humidity
0% to 90% r.h.: Maximum ±0.10Vol% or ±10% of display
-4 to 122°F
Temperature
Maximum ±0.10Vol% or ±10% of display
(-20 to +50°C):
Expected lifetime:
6 years
(refered to 1,000 hPa)
(refered to 50% r.h.)
(refered to 68°F or 20°C)
MK348-5 Electrochemical sensor for nitrogen dioxide NO2 (GfG part number 1318238)
Response time
t90: <30 seconds
Pressure
800 to 1,200 hPa: Maximum ±0.3 ppm or ±5% of display
(refered to 1,000 hPa)
Humidity
15% to 90% r.h.: Maximum ±0.3 ppm or ±5% of display
(refered to 50% r.h.)
-4 to 122°F
Temperature
Maximum ±0.3 ppm or ±% of display
(refered to 68°F or 20°C)
(-20 to +50°C):
Cross sensitivity:
Cl2 ≈ 100%; H2S ≈ -8%; CO=SO2=NO=0%
(*1)
Expected lifetime:
3 years
29
MK369-5/-6 Electrochemical sensor for carbon monoxide CO (GfG part number 1318232)
Response time
t50: <10 seconds
t90: <30 seconds
Pressure
800 to 1,200 hPa: Maximum ±3 ppm or ±10% of display
(refered to 1,000 hPa)
Humidity
15% to 90% r.h.: Maximum ±3 ppm or ±10% of display
(refered to 50% r.h.)
14 to 104°F
Temperature
Maximum ±3 ppm or ±10% of display
(refered to 68°F or 20°C)
(-10 to +40°C):
-4 to 122°F
Temperature
Maximum ±3 ppm or ±15% of display
(refered to 68°F or 20°C)
(-20 to +50°C):
Cross sensitivity:
H2S<±3%; C2H4<60%; NO<35%; NO2<10%; H2<10%; SO2=0%
(*1)
Expected lifetime:
3 years
MK376-5 Electrochemical sensor for oxygen O2 (GfG part number 1318231)
Response time:
t50: <10 seconds
t90: <20 seconds
Pressure
800 to 1,200 hPa: Maximum ±0.2Vol.% or ±2.5% of range
Humidity
15% to 90% r.h.: Maximum ±0.2Vol.% or ±2.5% of range
Temperature
-4 to 122°F
Maximum ±0.5Vol.% or ±2.5% of display
(-20 to +50°C):
Expected lifetime:
3 years
(refered to 1,000 hPa)
(refered to 50% r.h.)
(refered to 68°F or 20°C)
MK380-5 Electrochemical sensor for carbon monoxide CO and hydrogen sulfide H2S (COSH)
(GfG part number 1650730)
Response time:
t50: <15 seconds
t90: <45 seconds
Pressure
800 to 1,200 hPa: Maximum ±3ppm or ±7% CO reading or
(refered to 1,000 hPa)
±10% CO reading
Humidity
15% to 90% r.h.: Maximum ±3ppm or ±7% CO reading or
(refered to 50% r.h.)
±10% CO reading
Temperature
-4 to 122°F
Maximum ±3ppm or ±15% display
(refered to 68°F or 20°C)
(-20 to +50°C):
Cross sensitivities CO-portion:
H2S ≈ 0..40%; H2 ≈ 20%; SO2<20%; NO2<2%; NO<0.3%; Cl2=0% (*1)
Cross sensitivities H2S-portion:
CO<2%; NO2 ≈ -20%; SO2 ≈ 8..20%; NO<3%; H2≈ 0.03%; Cl2=0% (*1)
Expected lifetime:
3 years
MK396-5 Electrochemical sensor for hydrogen H2 (*2) (GfG part number 1318258)
Response time:
t50: <30 seconds
t90: <90 seconds
Pressure
800 to 1,200 hPa: Maximum ±10ppm or ±10% of display
(refered to 1,000 hPa)
Humidity
15% to 90% r.h.: Maximum ±10ppm or ±10% of display
(refered to 50% r.h.)
Temperature
-4 to 122°F
Maximum ±20ppm or ±20% of display
(refered to 68°F or 20°C)
(-20 to +50°C):
Cross sensitivities:
C2H4 ≈ 80%; NO ≈ 35%; HCN ≈ 30%; CO<20%; H2S<20%;
NO2=SO2=Cl2=HCl=0% (*1)
Expected lifetime:
2 years
30
MK396-5 Electrochemical sensor for hydrogen H2 (*2) (GfG part number 1318260)
Response time:
t50: <45 seconds
t90: <90 seconds
Pressure
800 to 1,200 hPa: Maximum ±0.01Vol% or ±10% of display
(refered to 1,000 hPa)
Humidity
15% to 90% r.h.: Maximum ±0.01Vol% or ±10% of display
(refered to 50% r.h.)
Temperature
-4 to 122°F
Maximum ±0.02Vol% or ±20% of display
(refered to 68°F or 20°C)
(-20 to +50°C):
Cross sensitivities:
NO2 ≈ -400%; CO ≈ 150%; H2S ≈ 20%; C2H4:n/d;
NH3=CO2=Cl2=SO2=HCN=0 (*1)
Expected lifetime:
2 years
MK396-5 Electrochemical sensor for hydrogen H2 (*2) (GfG part number 1318259)
Response time:
t50: <45 seconds
t90: <90 seconds
Pressure
800 to 1,200 hPa: Maximum ±0.01Vol% or ±10% of display
(refered to 1,000 hPa)
Humidity
15% to 90% r.h.: Maximum ±0.01Vol% or ±10% of display
(refered to 50% r.h.)
Temperature
-4 to 122°F
Maximum ±0.02Vol% or ±25% of display
(refered to 68°F or 20°C)
(-20 to +50°C):
Cross sensitivities:
H2S ≈ 220%; C2H4:n/d; NH3=CO2=CO=Cl2=HCN=NO=NO2=0 (*1)
Expected lifetime:
2 years
MK429-5/-6 Electrochemical sensor for hydrogen sulfice H2S (GfG part number 1318236)
Response time:
t50: <15 seconds
t90: <45 seconds
Pressure
800 to 1,200 hPa: Maximum ±2ppm or ±10% of display
(refered to 1,000 hPa)
Humidity
15% to 90% r.h.: Maximum ±2ppm or ±10% of display
(refered to 50% r.h.)
Temperature
14 to 104°F
Maximum ±2ppm or ±10% of display
(refered to 68°F or 20°C)
(-10 to +40°C):
Temperature
-4 to 122°F
Maximum ±2ppm or ±15% of display
(refered to 68°F or 20°C)
(-20 to +50°C):
Cross sensitivities:
SO2≈ 20%; NO2<-20%; CO<1%; NO<0,2%; H2<0,1%; (*1)
Expected lifetime:
3 years
(*1) Displayed value with reference to the supplied gas concentration
(*2) Not approved for LEL monitoring for applications of primary explosion protection
31
Technical Data
Type:
Detection principle:
Detection range:
Response time t90:
Expected sensor life:
Gas supply:
Display:
Alarm:
Climate conditions:
for operation:
for storage:
Zero point and
sensitivity calibration:
Operational time:
Power supply:
G460
Electrochemical (EC): toxic gases and oxygen
Catalytic combustion (CC): combustible gases and vapors
(up to 100% LEL)
Infrared (IR): Carbon dioxide
See Sensor Type and Detection Range
See Sensor Specifications
3 years
Diffusion
Illuminated full-graphic LCD, automatic size adjustment for optimal read
out, battery capacity display, gas concentration as instantaneous and
peak value
Depending on gas type; 2 or 3 instantaneous and 2 dosimeter alarms,
low battery alarm
Visual and audible warning and display indication, coloring of display
depending on alarm status (orange/red)
Buzzer: 103 dB (can be restricted to 90 dB)
-4 to 122°F (-20 to +55°C) / 5 to 95% r. F. / 70 to 130 kPa
-13 to 122°F (-25 to +50°C) / 5 to 95% r. F. / 70 to 130 kPa
(recommended 32 to 86°F (0 to +30°C)
Manual or automatic with calibration program
Up to 25 hours
1. NiMH battery module, rechargeable
Im=1 A (maximum charging current)
Um=30 VDC (maximum voltage) or
2. Alkaline battery module, non-rechargeable with 2x size AA Duracell
MN1500 LR6
Casing:
Material:
Dimensions:
Weight:
Protection:
Approvals:
CSA Approval:
Rubberized plastic
4.3x3.0x2.2 inches (110x75x55 mm) (HxWxD)
10.23 oz. (290 g)
IP 67
cCSAus Class I, Division 1, Group A, B, C and D Hazardous locations
Temp code T3
CSA C22.2 No. 152
ANSI / ISA-12.13.01-2000
32
Caution
¾¾ Substituting components may hinder intrinsic safety.
¾¾ For safety reasons, this equipment must be operated and serviced by
qualified personnel only. Read and understand the user manual completely
before operating or servicing this device.
¾¾ Do not use the detector if it is damaged. Before you use the detector,
inspect the case. Look for cracks or missing parts.
¾¾ If the detector is damaged or something is missing, contact
GfG Instrumentation, Inc. immediately.
¾¾ Calibrate the detector before first-time use and then on a regular
schedule, depending on use and sensor exposure to poisons and
contaminants.
¾¾ GfG recommends that you “bump test” the sensors before each use
to confirm their ability to respond to gas. To do this, expose the detector to
a gas concentration that exceeds the alarm set points. Manually verify that
the audible and visual alarms are activated. Calibrate if the readings are not
within the specified limits.
¾¾ It is recommended that the combustible sensor be checked with a
known concentration of calibration gas after any known exposure to catalyst
contaminants/poisons (sulfur compounds, silicon vapors, halogenated
compounds, etc).
¾¾ The combustible sensor is factory calibrated to 50% LEL methane. If
monitoring a different combustible gas in the % LEL range, calibrate the
sensor using the appropriate gas.
¾¾ High off-scale readings may indicate an explosive concentration.
¾¾ Only the combustible gas detection portion of this instrument has been
assessed for performance by CSA International.
¾¾ Protect the combustible sensor from exposure to lead compounds,
silicones and chlorinated hydrocarbons. Although certain organic vapors
(such as leaded gasoline and halogenated hydrocarbons) may temporarily
inhibit sensor performance, in most cases the sensor will recover after
calibration.
¾¾ For use only in hazardous locations where oxygen concentrations do
not exceed 20.9% volume (v/v).
¾¾ Any rapidly increasing reading followed by a declining or erratic
reading may indicate a gas concentration beyond the upper scale limit,
which may be hazardous.
33
¾¾ Extended exposure of the G460 to certain concentrations of
combustible gases and air may stress detector elements, which can
seriously affect the device’s performance. If an alarm occurs due to a high
concentration of combustible gases, recalibration should be performed, or if
needed, the sensor replaced.
¾¾ Do not test the combustible sensor’s response with a butane cigarette
lighter; doing so can damage the sensor.
¾¾ Do not expose the detector to electrical shock and/or severe
continuous mechanical shock.
¾¾ Do not attempt to disassemble, adjust or service the detector unless
instructions for that procedure are contained in the manual and/or that part
is listed as a replacement part.
¾¾ Electromagnetic interference (EMI) signals may cause incorrect
operation of this detector.
Warranty
GfG Instrumentation warrants our products to be free from defects in
material and workmanship when used for their intended purpose, and
agrees to remedy any such defect or to furnish a new part (at the option
of GfG Instrumentation) in exchange for any part of any product that we
manufacture that under normal use is found to be defective; provided that
the product is returned, by the purchaser, to GfG’s factory, intact, for our
examination, with all transportation costs prepaid, and provided that such
examination reveals, in our judgment, that it is defective.
This warranty does not extend to any products that have been subjected to
misuse, neglect, accident, or unauthorized modifications; nor does it extend
to products used contrary to the instructions furnished by us or to products
that have been repaired or altered outside of our factory. No agent or
reseller of GfG Instrumentation may alter the above statements.
34
GfG Instrumentation, Inc.
1194 Oak Valley Dr.
Suite 20
Ann Arbor, MI 48108
USA
US/Canada: (800) 959-0329
US/Canada Fax: (734) 769-1888
International: +1 734 769 0573
International Fax: +1 734 769 1888
Website: www.goodforgas.com
Worldwide Manufacturer of Gas Detection Solutions
2014 7004-460 Rev 7 (02/14)