
MODEL GFC7000EU CO ANALYZER WITH AUTO-REFERENCE
(Addendum to GFC7000E Manual PN 04584)
05134 Rev -
MODEL GFC7000EU
CO2 ANALYZER
(Addendum to GFC7000E Manual PN 04584)
Teledyne Analytical Instruments
16830 Chestnut St.
City of Industry, Ca. 91748
TEL: 626-961-9221
FAX: 626-961-2538
TEL: 626-934-1500
E-MAIL: ai-customerservice@teledyne.com
WEB SITE: http://www.teledyne-ai.com

MODEL GFC7000EU CO ANALYZER WITH AUTO-REFERENCE
(Addendum to GFC7000E Manual PN 04584)
05134 Rev -
OVERVIEW
The model GFC7000EU is a close derivative of the Model GFC7000E CO Analyzer.
The optical bench is longer (14 m), making the instrument more sensitive at low CO
2
levels. The instrument has a user selectable full scale range of 0-100 PPB to 0-100 PPM
of CO2.
The instrument does not come equipped with a sample flow rate sensor. Hence, disregard
any reference to the flow sensor in the users manual.
Because the GFC7000EU is a close derivative of GFC7000E, the Model GFC7000E
Instruction Manual continues to be valid as the reference manual covering the details of
the instrument’s components. Only the sections of the manual that are different between
the GFC7000E and a GFC7000EU are listed in this addendum.
2. SPECIFICATIONS, AGENCY
APPROVALS, AND WARRANTY
2.1 Specifications
Table: Model GFC7000EU Specifications
User selectable to any full scale range from 0-100 ppb to 0-100 ppm
ppb, ppm, µg/m3, mg/m3 (user selectable)
Zero Noise
< 0.5% of reading RMS over 5 ppm
(1) (3)
< 0.5% of reading
(2) (4)
Better than 1% of Range
(5)
800 scc/min. ± 10%
Temperature Range

MODEL GFC7000EU CO ANALYZER WITH AUTO-REFERENCE
(Addendum to GFC7000E Manual PN 04584)
05134 Rev -
0-95% RH, Non-Condensing
Temp Coefficient
< 0.05 % of reading per °C (5 ppb/°C minimum)
(6)
< 0.05 % of reading per V
Dimensions
(HxWxD)
7" x 17" x 23.5" (178 mm x 432 mm x 597 mm)
100V 50/60 Hz (3.25A), 115 V 60 Hz (3.0A),
220 – 240 V 50/60 Hz (2.5A)
Environmental
Conditions
Installation Category (Over voltage Category) II
Pollution Degree 2
Analog Outputs
Three (3) Outputs
Analog Output
Ranges
100 mV, 1 V, 5 V, 10 V, 2-20 or 4-20 mA isolated
current loop.
All Ranges with 5% Under/Over Range
Analog Output
Resolution
1 part in 4096 of selected full-scale voltage
8 Status outputs from opto-isolators
Control Inputs
6 Control Inputs, 2 defined, 4 spare
I/O
One (1) RS-232; One (1) RS-485/RS-232/Ethernet
Baud Rate : 300 - 115200
Certifications
CE: EN61010-1:90 + A1:92 + A2:95, EN61326 - Class
A
(1)
As defined by the USEPA
(2)
At constant temperature and voltage
(3)
Or 0.2 ppm, whichever is greater
(4)
Or 0.1 ppm, whichever is greater
(5)
Above 10 ppm range, otherwise 0.2 ppm for lower ranges
3.1.2. Pneumatic Connections
This section is similar to the one in the manual, with the following exception. The
extra port labeled “From Purge” is the exhaust port for the for the purge gas. The
gas needs to exhausted with a gas line not more than 10 meters long.
In addition, the GFC7000EU uses a different sample pressure sensor than the
GFC7000E. The GFc7000EU pressure sensor is rated for oxygen service. The part
number is listed in the appendix – spare parts.
6.13.1.3 Relay alarm outputs

MODEL GFC7000EU CO ANALYZER WITH AUTO-REFERENCE
(Addendum to GFC7000E Manual PN 04584)
05134 Rev -
There are 4 relay alarm outputs (AL1-AL4) on the rear panel. AL1 is for system
okay, AL2 is for concentration limit 1 exceeded and AL3 is for concentration limit 2
exceeded. The relay alarm output AL1 is enabled all the time, whereas the AL2 and
AL3 can be enabled/disabled by going into the diagnostics menu (with 929
password), then factory options, then turning conc. Alarm Relays ON or OFF. When
the concentration alarm relays are enabled, concentration alarms status is no longer
available through the “Status output” pins. So, either the alarm relays or the status bits
could be used to monitor the concentration alarms but not both at the same time. The
default factory setting is to enable the concentration alarm relays. The AL1 relay is
energized when the system is okay and de-energized when the system has a fault. The
AL2 and AL3 relays energize when the corresponding concentration limits are
exceeded.
11.1.1. Interpreting WARNING Messages
The most common and/or serious instrument failures will result in a warning message
being displayed on the front panel. The table below lists warning messages, along with
their meaning and recommended corrective action.
It should be noted that if more than two or three warning messages occur at the same
time, it is often an indication that some fundamental analyzer sub-system (power supply,
Relay Board, Motherboard) has failed rather than indication of the of the specific failures
referenced by the warnings. In this case, it is recommended that proper operation of
power supplies, the Relay Board, and the A/D Board be confirmed before addressing the
specific warning messages.
The analyzer will alert the user that a Warning Message is active by displaying the
keypad label MSG on the Front Panel. In this case the Front panel display will look
something like the following:
The analyzer will also alert the user via the Serial I/O COM port(s) and cause the FAULT
LED on the Front panel to blink.
To View or Clear the various warning messages press:
SAMPLE RANGE=50.00 PPM CO = 00.00
<TST TST> CAL MSG CLR SETUP

MODEL GFC7000EU CO ANALYZER WITH AUTO-REFERENCE
(Addendum to GFC7000E Manual PN 04584)
05134 Rev -
SAMPLE WHEEL TEMP WARNING CO = XX.XX
TEST
CAL MSG CLR SETUP
Make
SURE
warning
messages are
NOT
due to
LEGITIMATE PROBLEMS.
.
Press
CLR
to clear the
message currently being
Displayed.
If more than one warning is
active the next message will
take its place
Once the last warning has been
cleared, the analyzer returns to
SAMPLE
Mode
SAMPLE
RANGE=50.0 PPM
CO = XX.XX
< TST TST > CAL
MSG
CLR SETUP
SAMPLE
WHEEL TEMP WARNING
CO = XX.XX
< TST TST > CAL MSG
CLR
SETUP
TEST
deactivates Warning
Messages until New warning(s)
are activated
MSG
activates Warning
Messages.
<TST TST
> keys replaced with
TEST
key
Figure: Viewing and Clearing Warning Messages
NOTE: A failure of the analyzer’s CPU or Mother Board can result in any or ALL of the
following messages.
Table: Warning Messages
The optical bench
temp is controlled at
48 ± 5 °C.
Bench Heater
Bench Temperature Sensor
Relay controlling the Bench Heater
Entire Relay Board
I2C Bus
Box Temp is < 5 °C
or > 48 °C.
Box Temperature typically runs ~7oC warmer than
ambient temperature.
Poor/blocked ventilation to the analyzer.
Stopped Exhaust-Fan
Ambient Temperature outside of specified
range
Dynamic Span
operation failed
Measured concentration value is too high or
low.
Concentration Slope value to high or too low
Dynamic Zero
operation failed
Measured concentration value is too high.
Concentration Offset value to high
Configuration and
Calibration data
reset to original
Factory state.
Failed Disk on Chip
User erased data
Data Storage in
iDAS was erased
Failed Disk on Chip
User cleared data

MODEL GFC7000EU CO ANALYZER WITH AUTO-REFERENCE
(Addendum to GFC7000E Manual PN 04584)
05134 Rev -
The CPU is unable to
Communicate with
the Front Panel
Display /Keyboard
WARNING only appears on Serial I/O COM Port(s)
Front Panel Display will be frozen, blank or will not
respond.
Failed Keyboard
I2C Bus failure
Loose Connector/Wiring
PHT DRIVE is
>4750 mVDC or
<250 MVDC
Failed IR Photo-Detector
Failed Sync/Demod Board
IR Photo-Detector improperly attached to the
Sample Chamber
BENCH TEMP too high.
Mother Board not
detected on power
up.
WARNING only appears on Serial I/O COM Port(s)
Front Panel Display will be frozen, blank or will not
respond.
Massive Failure of Mother Board
The CPU cannot
communicate with
the Relay Board.
I2C Bus failure
Failed Relay Board
Loose connectors/wiring
Purge Pressure
outside of warning
limits specified by
PURGE_PRESS_SET
variable
Loss of purge flow
Failed purge pressure sensor
Purge pressure regulator not set properly
Sample Pressure is
<15 in-Hg or
> 35 in-Hg
Normally 29.92 in-
Hg at sea level
decreasing at 1 in-
Hg per 1000 ft of
altitude (with no
flow – pump
disconnected).
If Sample Pressure is < 15 in-HG:
Blocked Particulate Filter
Blocked Sample Inlet/Gas Line
Failed Pressure Sensor/circuitry
If Sample Pressure is > 35 in-HG:
Blocked Vent line on pressurized
Sample/Zero/Span gas supply
Bad Pressure Sensor/circuitry
Failed Permapure dryer
Sample temperature
is < 10oC or >
100oC.
Ambient Temperature outside of specified
range
Failed Bench Heater
Failed Bench Temperature Sensor
Relay controlling the Bench Heater
Failed Relay Board
I2C Bus
Occurs when CO Ref
is <1250 mVDC or
>4950 mVDC.
Either of these
conditions will result
in an invalid M/R
ratio.
GFC Wheel stopped
Failed Sync/Demod Board
If Status LED’s on the Sync/Demod Board ARE
flashing the cause is most likely a failed:
IR Source
Relay Board
I2C Bus
IR Photo-Detector
Phase Lock Loop
(PLL) has lost lock
GFC Wheel stopped
GFC Wheel rotation very slow/dragging

MODEL GFC7000EU CO ANALYZER WITH AUTO-REFERENCE
(Addendum to GFC7000E Manual PN 04584)
05134 Rev -
Failed Sync/Demod Board
If Status LED’s on the Sync/Demod Board ARE
flashing the cause is most likely an a problem with
the analyzer’s main power:
Intermittent loss of the power supply too short
to cause a SYSTEM RESET warning;
Frequency problem with the AC Mains.
The computer has
rebooted.
This message occurs at power on.
If it is confirmed that power has not been
interrupted:
Failed +5 VDC power,
Fatal Error caused software to restart
Loose connector/wiring
The filter wheel
temperature is
controlled at 68 ± 5
°
C
Blocked Cooling Vents below GFC Assembly
Analyzer’s Top Cover removed
Wheel Heater
Wheel Temperature Sensor
Relay controlling the Wheel Heater
Entire Relay Board
I2C Bus
APPENDIX B – GFC7000EU Spare Parts List
NOTE
Use of replacement parts other than those supplied by API may result in
non-compliance with European standard EN 61010-1.
Table B-1: GFC7000EU Individual Spare Parts List
Assy, Thermistor, Bench Wheel, M300E
Assembly, Motor Wheel Heater, 50W 120V
Source Assembly (with Adapter)
M300E 47 mm Filter Expendables Kit - KNF Pump Model

MODEL GFC7000EU CO ANALYZER WITH AUTO-REFERENCE
(Addendum to GFC7000E Manual PN 04584)
05134 Rev -
Filter, TFE, 47 mm 5 um, Qty 100
Filter, TFE, 47 mm 5 um, Qty 25
Assy, Motor, Synchronous, 115V/60HZ, "E"
Window, Sample Filter, 47 mm
Akit, Catalyst, CO/CO2 Converter (1 OZ)
Sample Thermistor M400 (S/N >099) or M401 (S/N>0573)
Objective Mirror, M300E+B17
Field Mirror, 32 Pass, M300E
Disk-On-Chip with Software
Assembly, Heater, Optical Bench
ASSY, Fan Rear Panel, E Series
PCA, Press Sensors w/SW49
Mother Board, relay alarm outputs
Wheel Position Sensor Assembly
Operators Manual for M360E
Sintered Filter (002-024900)
Replacement, Optical Switch , M300E

MODEL GFC7000EU CO ANALYZER WITH AUTO-REFERENCE
(Addendum to GFC7000E Manual PN 04584)
05134 Rev -
O-Ring, Sample Filter, 47 mm, 2-228V
O-Ring, Input/Output Mirror/Detector
O-Ring, Field and Objective Mirror
Pump Rebuild Kit, KNF Model #N05ATI
Solenoid, Stainless Steel, 3-Way, 12V
Solenoid, Stainless Steel, 2-Way, 12V
Assy, Pressure Transducer, M360U/GFC7000
Table B-2: GFC7000E Expendables List
M300E Expandables Kit Includes:
This kit contains the following items
Akit, TFE Fltr. Elements, 47mm, 5um (25)
Sintered Filter (002-024900)
Pump Rebuild Kit, KNF Model #NO5ATI
Service Note, How to rebuild KNF pump
Table B-3: GFC70000E Spares Kit for 1 Unit
M300E Spares Kit for 1 unit:
This kit contains the following items
Assy, Source, GFC7000E S/N >65
Assy,Fan Rear Panel, E series
Relay, DPDT, Gordos Preferred