Manual Addendum
Model GFC 7000T
CO2 Analyzer
(Addendum to GFC 7000TA Manual, PN 07272)
P/N M07273
DATE 06/11/13
TELEDYNE ELECTRONIC TECHNOLOGIES
Analytical Instruments
16830 Chestnut Street
City of Industry, CA 91748
Telephone: (626) 934-1500
Fax: (626) 961-2538
Teledyne Analytical Instruments
Model GFC7000T Carbon Dioxide Analyzer
ABOUT THIS ADDENDUM
This addendum, part number 07273, is to be used in conjunction with the Model GFC 7000TA
operation manual, part number 07272. Where operation of the Model GFC 7000T diverges from
that of the Model GFC 7000TA, this addendum takes precedence.
Please note that the GFC 7000TA operation manual contains important SAFETY messages for
this instrument. It is strongly recommended that you read that operation manual in its entirety as
well as this addendum, before operating the instrument.
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Model GFC7000T Carbon Dioxide Analyzer
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Model GFC7000T Carbon Dioxide Analyzer
TABLE OF CONTENTS
About This Addendum ...............................................................................................................iii
Table of Contents ...................................................................................................................... v
1.
2.
3.
4.
Overview ............................................................................................................................1
Specifications and Agency Approvals................................................................................1
Electrical Connections........................................................................................................2
Pneumatic Connections .....................................................................................................3
4.1. Basic and Zero/Span Valve Option Configurations ........................................................3
4.2. Making the Pneumatic Connections...............................................................................5
5.
6.
7.
Relay alarm outputs (Standard configuration)....................................................................6
Relay alarm outputs (Air Products Configuration)..............................................................7
Control inputs (Air Products Configuration only)................................................................7
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Model GFC7000T Carbon Dioxide Analyzer
1. OVERVIEW
The Model GFC 7000T is a close derivative of the Model GFC 7000TA CO2 Analyzer. The
main differences are as follows.
The optical bench is longer (14 m), making the instrument more sensitive at low CO2
levels. The instrument has a user-selectable full scale range of 0-100 PPB to 0-100 PPM
of CO2.
The rear panel is different. There is an extra pneumatic port for the exhaust of the purge
gas to the GFC wheel. Also, there are relay alarm outputs available on the rear panel.
Refer to the main manual (i.e. GFC 7000TA) that is shipped with your instrument for
details of the instrument’s components and operation. Any differences between this
instrument and what is described in the GFC 7000TA, will be described in this Addendum
to the manual.
2. SPECIFICATIONS AND AGENCY APPROVALS
Table 2-1 presents the specification parameters and values, as well as agency approvals.
Table 2-1. GFC 7000T Specifications and Agency Approvals
PARAMETER
Ranges
SPECIFICATION
User selectable to any full scale range from 0-2 ppm to 0-2,000 ppm
Measurement Units
Zero Noise
ppb, ppm, µg/m3, mg/m3 (user selectable)
< 0.1 ppm RMS
Span Noise
< 1% of reading RMS
< 0.2 ppm
Lower Detectable Limit
Zero Drift (24 hours)
Span Drift (24 hours)
Linearity
< 0.25 ppm
< 0.5% of reading
1% of full scale
Precision
0.5% reading
Lag Time
10 sec
Rise/Fall Time
Sample Flow Rate
Temperature Range
Humidity Range
Temp Coefficient
Voltage Coefficient
Dimensions (HxWxD)
Weight
<60 sec to 95%
800 cm3/min. ± 10%
5 - 40C operating
0-95% RH, Non-Condensing
< 0.05 % of reading per C
< 0.05 % of reading per V
7" x 17" x 23.5" (178 mm x 432 mm x 597 mm)
40 lb (18.1 kg)
AC Power
100 – 120V 50/60 Hz,
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Model GFC7000T Carbon Dioxide Analyzer
PARAMETER
SPECIFICATION
220 – 240 V 50/60 Hz
Environmental
Conditions
Installation Category (Over voltage Category) II Pollution Degree 2
1 Ethernet: 10/100Base-T
2 RS-232 (300 – 115,200 baud)
2 USB device ports
Standard I/O
8 opto-isolated digital status outputs
6 opto-isolated digital control inputs
4 analog outputs
1 USB com port
1 RS485
Optional I/O
8 analog inputs (0-10V, 12-bit)
4 digital alarm outputs
Multidrop RS232
3 4-20mA current outputs
Analog Output
Resolution
1 part in 4096 of selected full-scale voltage
Certifications
CE: IEC 61010-1:2001, EN61326 - Class A
North American: cNEMKO (Canada): CAN/CSA-C22.2 No. 61010-1-04
NEMKO-CCL (US):UL No.61010-1 (2nd Edition)
3. ELECTRICAL CONNECTIONS
Follow the instructions for unpacking, inspecting, and making electrical connections
presented in the main operation manual included with your analyzer.
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Model GFC7000T Carbon Dioxide Analyzer
4. PNEUMATIC CONNECTIONS
This section provides information on the basic pneumatic configuration and the zero/span
valve option pneumatic configuration. First are diagrams to illustrate the configurations,
followed by a description of the pneumatic ports, and then step-by-step instructions for
attaching the lines.
4.1. BASIC AND ZERO/SPAN VALVE OPTION CONFIGURATIONS
CAUTION
Sample and calibration gases should only come into contact with PTFE
(Teflon), FEP, glass, stainless steel or brass.
NOTE
To prevent dust from entering the gas flow channels, your analyzer was shipped with small
plugs inserted into each of the pneumatic fittings on the back panel. Remove these dust
plugs and store for future use before proceeding.
Figure 4-1 illustrates the most common configuration for gas supply and exhaust lines to the
Model GFC 7000T Analyzer without an internal pump. Figure 4-2 illustrates the pneumatic
connections for optional configuration with optional zero/span valves.
Table 4-1 describes the pneumatic ports.
Note that the flowmeter could also be configured upstream of the instrument. Since most
flowmeters are calibrated at ambient pressure, ensure that the flow going through the flow
meter is at ambient pressure, when it is placed upstream.
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Model GFC7000T Carbon Dioxide Analyzer
Figure 4-1. Pneumatic Connections for Pressurized Sample Delivery (w/o Internal Pump)
Figure 4-2. Pneumatic Connections–Configuration with Zero/Span Valve Option
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Model GFC7000T Carbon Dioxide Analyzer
Table 4-1. Model GFC 7000T Pneumatic Connections
Function
Rear Panel Label
Connect a gas line from the source of sample gas here.
SAMPLE
Calibration gasses are also inlet here on units without
zero/span valve option installed.
Connect an exhaust gas line of not more than 10 meters
long here.
EXHAUST
On units with zero/span valve option installed, connect a
gas line to the source of calibrated span gas here.
PRESSURE SPAN
VENT SPAN
ZERO
Not used
On units with zero/span valve option installed, attach a
gas line to the source of zero air here.
This inlet supplies purge air to the GFC wheel housing
TO PURGE
Connect a source of dried air that has been scrubbed of
CO2.
This exhausts purge air to the GFC wheel housing.
Connect an exhaust gas line of not more than 10 meters
long here. It is only used on the GFC 7000TU instrument.
FROM PURGE
4.2. MAKING THE PNEUMATIC CONNECTIONS
CAUTION
Venting should be outside the shelter or immediate area surrounding the
instrument.
1. Attach a sample inlet line to the sample inlet port. The SAMPLE input line should not
be more than 2 meters long.
2. Attach sources of zero air and span gas
3. Span Gas is a gas specifically mixed to match the chemical composition of the type
of gas being measured at near full scale of the desired measurement range.
When CO2 measurements are to be made with the Teledyne Instruments Model
GFC 7000T Analyzer it is recommended that you use a gas calibrated to have a CO2
content equaling 80% of the range of compositions being measured.
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Model GFC7000T Carbon Dioxide Analyzer
EXAMPLE: If the application is to measure between 0 ppm and 50 ppm, an
appropriate Span Gas would be 40 ppm. If the application is to measure between
0 ppm and 100 ppm, an appropriate Span Gas would be 80 ppm.
Zero Air is similar in chemical composition to the earths atmosphere but scrubbed of
all components that might affect the analyzer’s readings. In the case of CO2
measurements this means CO2 less than 0.1 ppm of CO2 and Water Vapor.
Zero Air can be purchased in pressurized canisters or created using a Teledyne
Instruments Model 701 Zero Air Generator in combination with a canister of
indicating soda-lime.
4. Attach an exhaust line to the exhaust outlet port.
The exhaust from the analyzer and vent lines should be vented to atmospheric
pressure using maximum of 10 meters of 1/4” PTFE tubing.
5. Attach a source of dried air scrubbed of CO2 to the purge inlet port
The source of purge gas should be at least 10 psig and capable of maintaining a flow
of at least 1 liter/min.
Purge source gas pressure should not exceed 30 psig. The purge exhaust is only
used on the GFC 7000TU model.
6. Once the appropriate pneumatic connections have been made, check all pneumatic
fittings for leaks.
5. RELAY ALARM OUTPUTS (STANDARD
CONFIGURATION)
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.
AL4 is not used
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.
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Model GFC7000T Carbon Dioxide Analyzer
6. RELAY ALARM OUTPUTS (AIR PRODUCTS
CONFIGURATION)
There are 4 relay alarm outputs (AL1-AL4) on the rear panel.
AL1 is for “system okay”,
AL2 is for “high range status” and
AL3 is for “zero calibration status”
AL4 is not used
The AL1 relay is energized when the system is okay and de-energized when the system has
a fault. The AL2 relay is energized when the high auto-range is in use and and AL3 relays
energize when the the instrument is in zero calibration mode.
7. CONTROL INPUTS (AIR PRODUCTS
CONFIGURATION ONLY)
An additional control input is available on this instrument. Control input “C” is used to
select the range for remote calibration. When input C is low, the instrument selects high
range during contact closure calibration.
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