California Analytical Instruments 300 HFID User manual

OPERATION AND MAINTENANCE
MANUAL FOR MODEL 300 HFID/MHFID ANALYZER
I
nstruments,
I
nc.
C
alifornia
A
nalytical
1312 West Grove Avenue, Orange, CA 92865 - 714 974-5560 - Fax 714 921-2531
Website: www.gasanalyzers.com

Section 1 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 1-2
MODEL 300 HFID/MHFID
HEATED HYDROCARBON ANALYZER
INSTRUCTION MANUAL
This manual describes the installation, calibration and operation of California Analytical
Instruments, Inc. Model 300 HFID and Model 300M HFID Heated Total Hydrocarbon Gas
Analyzer.
To assure correct operation and accurate results, it is recommended that the user carefully
read this document.
June, 2003
Version B.031
P/N 970040
MODEL 300 HFID INSTRUCTION MANUAL
$25.00 EACH

Section 1 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 1-3
Table of Contents
1. INTRODUCTION................................................................................................................... 1-6
1.1. Overview......................................................................................................................... 1-6
1.2. Unpacking Instructions................................................................................................... 1-6
1.3. Reporting Damage ......................................................................................................... 1-6
1.4. Contact Information........................................................................................................ 1-6
1.5. Warranty Certificate........................................................................................................ 1-7
1.6. Possible Explosion Hazard............................................................................................. 1-8
1.7. Electrical Shock Hazard ................................................................................................. 1-8
1.8. Fuel Requirements......................................................................................................... 1-8
1.9. Potential Sample Pump Damage ................................................................................... 1-8
1.10. FACTORY QA CHECKOUT SHEET .......................................................................... 1-9
2. FEATURES AND PRINCIPLES OF OPERATION .............................................................. 2-10
2.1. Description.................................................................................................................... 2-10
2.2. Product Specifications Model 300 HFID/MHFID .......................................................... 2-11
2.3. FID OPTIONS............................................................................................................... 2-11
3. INSTALLATION................................................................................................................... 3-12
3.1. General.........................................................................................................................3-12
3.2. Site and Mounting......................................................................................................... 3-12
3.3. Electrical....................................................................................................................... 3-12
3.4. Remote Range Operation............................................................................................. 3-13
3.5. Sampling System.......................................................................................................... 3-14
3.6. Required Gases and Gas Handling Equipment............................................................ 3-14
3.7. Gas Connections.......................................................................................................... 3-14
3.8. Sampling Requirements............................................................................................... 3-15
3.9. Pressure and Flow Rate............................................................................................... 3-15
3.10. Sample Gas By-Pass Outlet (Vent) .......................................................................... 3-15
4. DESCRIPTION AND FUNCTION COMPONENTS............................................................. 4-16
4.1. Model 300 HFID/MHFID Analyzer Front Panel ............................................................ 4-16
4.2. Model 300 HFID/MHFID Analyzer Rear Panel............................................................. 4-17
5. Major Internal Components ................................................................................................. 5-19
5.1. Model 300 HFID/MHFID Interior Layout....................................................................... 5-19
5.2. MAIN CIRCUIT BOARD............................................................................................... 5-21
5.3. MAIN AMPLIFIER BOARD........................................................................................... 5-22
5.4. Burner Assembly.......................................................................................................... 5-23
5.5. Automatic Ignite Board................................................................................................. 5-24
5.6. Diagnostic Board.......................................................................................................... 5-25
5.7. EPC and Dual Temperature Control Board.................................................................. 5-26
5.8. EPC Hydrogen and Ch4 Cutter Control Board Components........................................ 5-27
5.9. Valve Driver Board ....................................................................................................... 5-28
6. Operation............................................................................................................................. 6-29
6.1. Start-Up Procedure....................................................................................................... 6-31
6.2. Shutdown Procedure.................................................................................................... 6-31
7. FUNCTIONAL DESCRIPTION............................................................................................ 7-32
7.1. Operating Principle....................................................................................................... 7-32
7.2. Burner Assembly.......................................................................................................... 7-32
7.3. Methane Cutter (Non-Methane Hydrocarbons)............................................................ 7-32
7.4. Flow System................................................................................................................. 7-33
8. ELECTRONICS................................................................................................................... 8-34

Section 1 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 1-4
8.1. Main Circuit Board........................................................................................................ 8-34
8.2. Main Amplifier Board.................................................................................................... 8-34
8.3. Automatic Ignite Board................................................................................................. 8-34
8.4. Diagnostic Board.......................................................................................................... 8-34
8.5. EPC/Dual Temperature Control Board......................................................................... 8-34
8.6. EPC Hydrogen/Cutter Temperature Control Board...................................................... 8-35
8.7. Valve Driver Control Board........................................................................................... 8-35
9. GENERAL INFORMATION-TROUBLESHOOTING-DISASSEMBLY PROCEDURES....... 9-36
9.1. Oven Burner Assembly Filter Unit/Filter Removal........................................................ 9-36
9.2. Electronic Boards/Removal.......................................................................................... 9-36
9.3. Electronics.................................................................................................................... 9-36
9.4. Flow System/Fuel and Burner Air Supply..................................................................... 9-37
9.5. Sample Supply ............................................................................................................. 9-37
10. TROUBLESHOOTING GUIDE....................................................................................... 10-38
11. FLOW DIAGRAMS AND SCHEMATICS ....................................................................... 11-39

Section 1 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 1-5
Table of Figures
Figure 3-1 AC Power Switch, Connector, and Fuse................................................................... 3-12
Figure 3-2 EMI Suppressor......................................................................................................... 3-13
Figure 4-1 Model 300 HFID/MHFID Analyzer Front Panel with CH4Cutter................................ 4-16
Figure 4-2 Model 300 HFID/MHFID Analyzer Rear Panel.......................................................... 4-17
Figure 5-1 Model 300 HFID/MHFID Interior Layout.................................................................... 5-19
Figure 5-2 Model 300 HFID/MHFID Main Circuit Board ............................................................. 5-21
Figure 5-3 Model 300 HFID/MHFID Amplifier Board .................................................................. 5-22
Figure 5-4 Model 300 HFID/MHFID Burner Assembly................................................................ 5-23
Figure 5-5 Model 300 HFID/MHFID Automatic Ignite Board....................................................... 5-24
Figure 5-6 Model 300 HFID/MHFID Output Diagnostic Circuit Board......................................... 5-25
Figure 5-7 Model 300 HFID/MHFID EPC and Dual Temperature Control Board ....................... 5-26
Figure 5-8 Model 300 HFID/MHFID EPC Hydrogen and CH4 Cutter Control Circuit Board....... 5-27
Figure 5-9 Model 300 Valve Driver Board................................................................................... 5-28
Tables
Table 4-1 Connector for External Wiring..................................................................................... 4-18
Table 4-2 Twenty Eight Conductor Cable Color Chart................................................................ 4-18

Section 1 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 1-6
1. INTRODUCTION
1.1. Overview
Thank you and congratulations! You have just purchased one of the most reliable gas
analyzers in the world. Before using the analyzer, please familiarize yourself with its operation
by reading this manual. If you have any questions, please do not hesitate to call California
Analytical Instruments for assistance. We want you to be a member of our thousands of
satisfied customers.
1.2. Unpacking Instructions
Open the shipping container and carefully remove the analyzer from the packing materials.
Inspect the instrument for any sign of damage. Remove the retaining screws and lift off the
cover panel. Visually check for proper seating of parts and or connectors. If all internal
components appear to be normal replace the cover and secure it with the screws previously
removed.
1.3. Reporting Damage
Should there be any apparent damage either to the inside or outside of the instrument due to
shipping or handling, notify the shipper immediately. Retain the shipping container or packing
materials for inspection by the shipper.
1.4. Contact Information
California Analytical Instruments, Inc.
1312 West Grove Avenue
Orange, CA 92865
714 974-5560
Fax 714 921-2531
Website: www.gasanalyzers.com

Section 1 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 1-7
1.5. Warranty Certificate
Subject to the exceptions and upon the conditions stated below, California Analytical
Instruments (CAI) warrants that the products sold under this sales order shall be free from
defects in workmanship and materials for one year after delivery of the product to the original
Buyer by CAI and if any such product should prove to be defective within such one year
period, CAI agrees, at its option, either (i) to correct by repair or, at CAI’s election, by
replacement with equivalent product any such defective product, provided that investigation
and factory inspection discloses that such defect developed under normal and proper uses, or
(ii) to refund the purchase price. The exceptions and conditions mentioned above are as
follows:
a) components or accessories manufactured by CAI that by their nature are not intended to or will not
function for one year are warranted only to give reasonable service for a reasonable time. What
constitutes reasonable time and reasonable services shall be determined solely by CAl. A complete
list of such components and accessories is maintained at the factory;
b) CAI makes no warranty with respect to components or accessories not manufactured by it; in the
event of defect in any such component or accessory CAI will give reasonable assistance to Buyer in
obtaining from the respective manufacturer whatever adjustment is authorized by the
manufacturer’s warranty;
c) any product claimed to be defective must be returned to the factory transportation charges prepaid
and CAI will return the repaired or replaced product freight collect;
d) if the product claimed to be defective requires on-site repair, such warranty labor will be provided at
no charge; however, transportation and living expenses will be charged to Buyer;
e) if the product is a consumable or the like, it is warranted only to conform to the quantity and content
and for the period (but not in excess of one year) stated on the label at the time of delivery or 90
days;
f) CAI may from time to time provide a special printed warranty with respect to a certain product, and
where applicable, such warranty shall be deemed incorporated herein by reference;
g) CAI shall be released from all obligations under all warranties, either expressed or implied, if any
product covered hereby is repaired or modified by persons other than its own authorized service
personnel unless such repair by others is made with the written consent of CAl.
IT IS EXPRESSLY AGREED THAT THE ABOVE WARRANTY SHALL BE IN LIEU OF ALL
WARRANTIES OF FITNESS AND OF THE WARRANTY OF MERCHANTABILITY AND THAT
CAI SHALL HAVE NO LIABILITY FOR SPECIAL OR CONSEQUENTIAL DAMAGES OF ANY
KIND OR FROM ANY CAUSE WHATSOEVER ARISING OUT OF THE MANUFACTURE USE,
SALE, HANDLING, REPAIR, MAINTENANCE OR REPLACEMENT OF ANY OF THE
PRODUCTS SOLD UNDER THIS SALES ORDER. SOME STATES DO NOT ALLOW THE
EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THAT
THE ABOVE LIMITATIONS OR EXCLUSIONS MAY NOT APPLY. THIS WARRANTY GIVES
YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY HAVE OTHER RIGHTS, WHICH VARY FROM
STATE TO STATE.
Representations and warranties made by any person, including dealers and representatives of
CAI which are inconsistent or in conflict with the terms of this warranty, shall not be binding upon
CAI unless produced in writing and approved by an expressly authorized officer of CAl.

Section 1 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 1-8
Danger
1.6. Possible Explosion Hazard
Do not apply power to the analyzer or attempt to ignite the burner until performing ALL leak
checks and until determining the analyzer environment to be non-hazardous.
Use this analyzer in a NON-HAZARDOUS environment.
This analyzer uses a fuel that contains a FLAMMABLE LEVEL OF HYDROGEN. Any
leakage from this fuel can result in an explosion. Carefully check the fuel supply system, both
inside and outside the analyzer for leaks upon installation, before initial start-up, during any
maintenance: or after the integrity of the system is broken.
This analyzer has not been designed for use with a hazardous sample.
Tampering or use of substitute components may cause a safety hazard. Use only factory
authorized replacement parts.
1.7. Electrical Shock Hazard
Do not operate without the cover secured. Servicing requires access to live electrical
components that can cause death or serious injury. Refer servicing to qualified service
personnel. For safety and proper performance, connect this instrument to a properly grounded
three-wire receptacle.
Caution
1.8. Fuel Requirements
The CAI factory configures the Model 300 HFID/MHFID for either 100% Hydrogen or 40%/60%
Hydrogen/Helium Fuel. Please make sure to use the CORRECT fuel.
Use of INCORRECT fuel will DAMAGE the instrument and could cause an EXPLOSION.
1.9. Potential Sample Pump Damage
For applications that require injection of calibration gas via the sample port of the analyzer, it is
MANDATORY that pressures do not exceed 2.0 PSIG pressure. Damage sustained by the
Plug Removal
Do not operate this analyzer UNTIL REMOVING the red plastic ¼ inch plugs from the
sample/zero/span/fuel fittings on the rear panel.

Section 1 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 1-9
1.10. FACTORY QA CHECKOUT SHEET
FID SERIAL NUMBER:
FACTORY AIR PRESSURE SETTING:
FACTORY FUEL PRESSURE SETTING:
FACTORY SAMPLE PRESSURE SETTING:

Section 2 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 2-10
2. FEATURES AND PRINCIPLES OF OPERATION
2.1. Description
The CAI Model 300 HFID Heated Total Hydrocarbon Analyzer utilizes a highly sensitive flame
ionization detector (FID) gas analyzer for measuring gas concentrations in industrial and
vehicle emission applications.
The CAI Model 300 MHFID Heated Total Hydrocarbon Analyzer is exactly the same
instrument as the Model 300 HFID, except that it contains a catalyst that may be switched in
and out of the sample stream, with the front panel switch or via a contact closure, to analyze
the methane content of the sample. This catalyst (Methane Cutter) removes all hydrocarbons
from the sample stream except methane.
The heated sample gas is maintained above the dew point by a self contained internal
adjustable temperature oven. The oven temperature may be adjusted between 60 and 200
degrees C. The sample gas is maintained at an elevated temperature until it exits the FID
burner assembly. This prevents any loss of hydrocarbon concentration in the sample due to
condensation.
The instrument contains a front panel, nine position, range switch which allows the selection of
eight full scale ranges or remote from 3 to 10,000 or 10 to 30,000 ppm Carbon. The
instrument has a 0 to 10 VDC and 4-20 MADC analog (recorder) output signal for each
selected range. The ranges may be remote selected externally.

Section 2 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 2-11
2.2. Product Specifications Model 300 HFID/MHFID
ANALYSIS METHOD: Flame Ionization
Detector (FID)
TOTAL RANGES: 0-3, 10, 30, 100, 300, 1,000,
3,000, 10,000, 30,000 ppm Carbon
EIGHT OPERATING RANGES: Switch
Selectable from the Front Panel or Remote
Range Change.
RESOLUTION: 0.01 ppm Carbon
REPEATABILITY: Better than 0.5% of Full
Scale
LINEARITY: Better than 1% of Full Scale to
10,000
Better than 1% of Full Scale above 10,000
O2 EFFECT: Less than 1% of Full Scale
CH4 EFFECT: Less than 1.2 Times Propane
RESPONSE TIME: 90% of Full Scale in 1.5
seconds
SAMPLE FLOW RATE: With Pump 3.0 L/min.
±1.5 L/min.
EXTERNAL SAMPLE FILTER: 40 micron
required
INTERNAL SAMPLE FILTER: 0.1 micron
Replaceable Filter
NOISE: Less than 0.5% of Full Scale
ZERO & SPAN DRIFT: Less than 1% of Full
Scale per 24 hours
ZERO & SPAN ADJUSTMENT: Ten Turn
Potentiometer
FLOW CONTROL: Electronic Proportional
Pressure Valve
FUEL REQUIREMENTS: 40% H2 60% He
120 cc/min. or 100% H2 at Specified Flow Rate
(Model 300HFID Only)
AIR REQUIREMENTS: Less than 1 ppm THC.
See Individual Sheet for Specific Flow Rates
DISPLAY: 3½ Digit Panel Meter.
DIAGNOSTICS: 3½ Digit Meter with seven
Position Switch
Collector
Voltage +15 VDC
Fuel
Pressure Oven
Temperature
Air Pressure Burner
Temperature
Sample
Pressure
ANALOG OUTPUT: 0-10 VDC and 4-20
MADC
FUEL/AIR CONTROL: Forward Pressure
Regulator & Capillaries
IGNITION: Momentary Push-Button With
Flame-On Indicator (Manual or Remote Control)
FLAME OUT INDICATOR: Automatic Fuel Shut
Off
AMBIENT TEMPERATURE: 5 to 45 Degrees C
SAMPLE TEMPERATURE: 0 to 50 Degrees C
WARM-UP TIME: 1 Hour
FITTINGS: 1/4 Inch Tube
POWER REQUIREMENTS: 115/230 (±10%)
VAC 50/60 Hz; 600 Watts
DIMENSIONS: 5¼ H × 19 W × 24 D (Inches)
RELATIVE HUMIDITY: Less than 90% RH
WEIGHT: 38 Pounds
Specifications subject to change without notice
2.3. FID OPTIONS
•Methane Cutter (Reads Only Methane in Sample)
•Specify Fuel Type
•19 Inch Rack Mount Slides
•Remote In-Line Filter

Section 3 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 3-12
3. INSTALLATION
3.1. General
The design of the instrument is for industrial applications. These installation instructions are
for a typical site. Direct any questions regarding specific installation situations to Technical
Service of California Analytical Instruments, Inc.
3.2. Site and Mounting
NOTE: Observe the following precautions carefully:
1) Select a site free from direct sunlight, radiation from a high temperature surface, or
abrupt temperature variations.
2) This analyzer is not suitable for outdoor installation. If installed outdoors, shelter
the instrument from wind and rain
3) Select a site where the air is clean. Avoid exposing the instrument to corrosive or
combustible gases.
4) The instrument must not be subject to severe vibration. If severe vibration is
present, use isolation mounts.
5) The design of the instrument is for rack mounting. Optional rack mount slides are
available.
6) Do not install near equipment emitting electromagnetic interference (EMI).
NOTE: A rear supporting brace or equivalent is required if the optional rack mount
slides were not purchased.
3.3. Electrical
Connect all wiring at the rear of the instrument. Table 4-1 on the following page show the
connect outputs, etc. Connect the AC power to the power/fuse/switch as shown below in
Figure 4-1.
0
I
Figure 3-1 AC Power Switch, Connector, and Fuse.
NOTES: A defective ground may affect the operation of the instrument. Connect the
output voltages per Table 4-1. Shielded wiring is recommended for output signals.

Section 3 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 3-13
CAUTION: Electromagnetic interference (EMI) may affect the operation of the
instrument. Do not install the instrument near electrical noise (such as high frequency
furnaces, electric welding machines, etc.). A separate power line must be used If the
instrument must be installed at such locations. Control the noise from a relay or
solenoid valve by the use of an EMI suppressor (RC circuit) across the power wiring
close to the noise-generating component (see Figure 4-2).
EMI
Suppressor
EMI
Source
A
nalyzer
Figure 3-2 EMI Suppressor.
NOTE: Locate the EMI Suppressor close to the noise source.
3.4. Remote Range Operation
Obtain remote range identification and range selection by the rear panel connections. When
selecting a range the corresponding control line pulls low to zero VDC. Ranges not selected
will remain at approximately 5 VDC.
Selecting remote range control on the front panel switch provides a contact closure at the rear
panel connector. Remote range selection and FID ignite is made by connection of the control
wire at the rear panel connector. A contact closure at the rear panel connector indicates FID
“Flame On.”
NOTE: Shielded wiring is recommended for output signals.

Section 3 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 3-14
3.5. Sampling System
The analyzer's sampling system consists of:
1) An internally mounted in line particulate filter
2) An internally mounted in line particulate filter
3) A sample pump and flow meter (optional)
4) A sample capillary that controls the sample flow rate to the sensor at 0.5 LPM.
5) A precision controlled relief valve.
The relief valve maintains a constant inlet pressure to the sample capillary and reduces
response time by providing a bypass loop to the exhaust for excess sample.
The design of the analyzer is to measure a conditioned clean dry sample gas. Removal of the
moisture is to prevent condensation in the analyzer. Some applications may require additional
sample conditioning, dependent upon the specifications of the measured sample gas.
3.6. Required Gases and Gas Handling Equipment
6) Air (zero and burner air, < 1 ppm C) in pressurized cylinder.
7) Fuel 40% H2/60% He or 100% H2 in pressurized cylinder. (As Specified)
8) Standard span gas(es) near full-scale concentration (typically 80-95% of the
analyzers measuring range) with an air balance, in a pressurized, certified cylinder.
9) Pressure regulators for zero and span gas cylinders.
10)Corrosive resistant gas tubing.
11)Flow meter with valve (0-2 LPM) ⎯if not supplied as an analyzer option.
12)Pump⎯if not supplied as an analyzer option.
3.7. Gas Connections
The tubing from the sampling system to the gas analyzer should be corrosive resistant
material such as Teflon ® or stainless steel. Do not use rubber or soft vinyl tubing should not
be used even when the gases sampled are non-corrosive, since readings may be inaccurate
due to gas absorption into the piping material. To obtain fast response, the tube should be as
short as possible. Optimum tube internal diameter is 0.16 inch (4 mm). Instrument couplings
are ¼-inch tube. A sample-gas outlet fitting is located on the rear panel (¼-inch tube). Keep
pressure at this outlet at atmospheric level. Vent this gas from the instrument.
In general, use heated sample lines for measuring heavy hydrocarbons. This instrument does
not control the temperature in the external heated lines. There are provisions to terminate
heated sample lines at the rear of the instrument to eliminate “cold” spots.
NOTE: Teflon®is a registered trademark of E. I. du Pont de Nemours and Company.
NOTE: Be sure tubing and joints are clean. Dust entering the instrument may cause it
to malfunction.

Section 3 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 3-15
3.8. Sampling Requirements
1) Filtration
a) Eliminate all dust. Use filters as necessary.
b) Remote: A remote heated filter is recommended. A minimum of 40 microns is
required.
c) Internal: The instrument includes an internal 0.1 micron filter located in the
heated oven compartment. This fiberglass filter is easily replaceable.
2) Condensation
•Dew point of the sample gases must be lower than the temperature of the
heated sample line to prevent accidental hydrocarbon condensation.
1) Presence of Corrosive Gases
•High concentrations of corrosive gases such as Cl2, F2, HCI, etc. present in the
sample gas will shorten the useful service life of the instrument.
2) Gas Temperature
•The Model 300 HFID/MHFID is factory set at 190º C unless specified at other
temperatures.
3.9. Pressure and Flow Rate
An internal pressure regulator controls the burner air entering the instrument. The air cylinder
pressure should be set at 30 PSIG. The air regulator is factory set for proper air/fuel ratio as
indicated on the QA Check Sheet and as included in this manual.
Fuel +/- 1.0 PSIG of Indicated Setting
Air +/- 1.0 PSIG of Indicated Setting
Sample +/- 1.0 PSIG of Indicated Setting
NOTE: Do not operate the FID sample pump with sample lines that have more than 2
PSIG pressure. If using sample lines to introduce zero/span gases, do not exceed 2
PSIG at sample pump.
A factory set precision electronically controlled proportional flow controller controls the sample
and fuel entering the instrument.
For proper flow control, set the sample gas and fuel entering the instrument at a pressure
between 6 and 25 PSIG at a flow rate of 4 ± 1.5 liters/min.
If ordered, the internal heated sample pump automatically maintains this pressure. The
calibration/span and zero-gas-cylinder-pressures should be set at 30 PSIG.
3.10. Sample Gas By-Pass Outlet (Vent)
A sample-gas by-pass outlet-connector is located on the rear panel (¼ Inch Tube). Keep
pressure at this outlet at atmospheric level. ANY backpressure may cause an error in reading.
Vent this gas away from the instrument.

Section 4 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 4-16
4. DESCRIPTION AND FUNCTION COMPONENTS
4.1. Model 300 HFID/MHFID Analyzer Front Panel
Figure 4-1 Model 300 HFID/MHFID Analyzer Front Panel with CH4Cutter
1) Digital Indicator (3 1/2 Digits): Displays analyzer output.
2) Digital Indicator (3 1/2 Digits): Displays diagnostic functions.
3) Diagnostic Switch: Eight Position Switch Displays:
Collector Voltage (DCV) Plus 15 VDC Supply
Fuel Pressure (PSIG) Cutter Temperature (C)
Air Pressure (PSIG) Burner Temperature (C)
Sample Pressure (PSIG) Oven Temperature (C)
4) Span Control: Sets fine gain of instrument. (Adjust while span gas is flowing through
instrument.)
5) Zero Control: Sets zero level of instrument. (Adjust while zero gas is flowing through
instrument.)
6) Ignite Switch: Depressing the momentary push-button ignite switch starts the burner
ignites sequence. The illuminated LED in the switch and a contact closure on the rear
panel connector indicates Burner ON condition. Remote ignite may be accomplished
via a contact closure on the rear panel connector.
7) Range Switch: Allows selection of ranges 1 through 8 or remote. The remote position
allows for remote computer control of ranges via a contact closure on the rear panel
connector. An internal slide switch selects ranges 3 to 10,000 or 10 to 30,000 ppm C.
8) Multiplier LED's: Meter Reading Times 10 or 100.
9) Heated Cycle Switch: Indicates Pump, Oven, and Cutter Heaters are cycling.
10) Pump Switch: Turns On Heated Internal Sample Pump
11) Sample/Zero/Span/Remote Switch: Activates Internal Solenoids.
12) Air Pressure Adjust: Adjusts Air Pressure (See Factory Settings Sheet).
13) Fuel Pressure Adjust: Adjusts Fuel Pressure (See Factory Settings Sheet).
14) Methane Cutter Switch: Turns On Methane Cutter.
1 8 6 2 9 11
7 5 4 3 12 1310 14

Section 4 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 4-17
4.2. Model 300 HFID/MHFID Analyzer Rear Panel
Figure 4-2 Model 300 HFID/MHFID Analyzer Rear Panel
1) Sample Gas Inlet: Feeds sample gas to the analyzer. Threaded ¼ Inch
Tube. Fitting also contains a heated filter.
2) Sample Gas By-Pass Outlet (Vent): Exhaust for sample. Threaded ¼ Inch
Tube.
3) Burner Air Inlet: For feeding hydrocarbon free air to the burner. See Figure
8. Threaded ¼ Inch Tube.
4) Fuel Inlet: For feeding fuel to the burner. See Figure 8. Threaded ¼ Inch
Tube.
5) Burner Outlet (Vent): Exhaust for burner (No fitting required)
6) Power Entry Module: Power cord connection, power switch, fuse
compartment.
7) Rear Panel Power ON/OFF Switch: Turns ON/OFF line power to instrument.
8) Span Gas Inlet: Inputs Span Gas to Optional Solenoids
9) Zero Gas Inlet: Inputs Zero Gas to Optional Solenoids
2 5
1
4 3 8
10
97 6

Section 4 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 4-18
Table 4-1 Connector for External Wiring
1. V Out Common 9. Zero Select 17. R1 ID/Control 25. Remote Range Control
2. 10. Span Select 18. R2 ID/Control 26. Remote Range Common
3. 0- 10 VDC 11. Flame On Output 19. R3 ID/Control 27. 5 VDC
4. I Out Common 12. Flame On Common 20. R4 ID/Control 28. DC Common
5. I Out (4-20 MADC) 13. Ignite On 21. R5 ID/Control
6. THC/CH4 Common 14. Ignite Common 22. R6 ID/Control
7. Select THC or CH4 15. Sample Select 23. R7 ID/Control
8. Oven Temp 16. Z/S/Sample
Common 24. R8 ID/Control
Table 4-2 Twenty Eight Conductor Cable Color Chart
Pin Number Wire Color Wire Color Abbreviation
1 DARK BROWN DK BR
2 RED RD
3 ORANGE OR
4 YELLOW YL
5 GREEN GR
6 LIGHT BLUE LT BL
7 VIOLET VI
8 GRAY GY
9 WHITE WH
10 BLACK BK
11 LIGHT BROWN LT BR
12 PINK PN
13 BLUE BL
14 LIGHT GREEN LT GR
15 WHITE/BLACK WH/BK
16 WHITE/RED WH/RD
17 WHITE/GREEN WH/GN
18 WHITE/YELLOW WHNL
19 WHITE/BLUE WH/BL
20 WHITE/BROWN WH/BR
21 WHITE/ORANGE WH/OR
22 WHITE/GRAY WH/GR
23 WHITE/VIOLET WH/I
24 WHITE/PINK WH/PN
25 WHITE/LIGHT GRAY WH/LT GY
26 BLACK/RED BK/RD
27 BLACK/ORANGE BK/OR
28 BLACK/BROWN BK/BR

Section 5 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 5-19
5. Major Internal Components
5.1. Model 300 HFID/MHFID Interior Layout
Figure 5-1 Model 300 HFID/MHFID Interior Layout
1) Mother Board: Includes components for all power supplies and connector for
the individual plug in boards. See Figure 6 for board locations.
2) Power Transformer: Converts line voltage to several lower AC voltages and
delivered to the main circuit board.
3) Zero Solenoid Valve: Allows Zero Calibration Gas To Flow to Burner.
4) Fuel Solenoid Valve: Automatic Fuel Shut Off.
5) Air Solenoid Valve: Automatic Air Shut Off.
6) Span Solenoid Valve: Allows Span Calibration Gas To Flow to Burner.
7) Heated Oven: Maintains Sample Components at Set Temperature (Cover
Removed).
8) Oven Circulation Fan Motor: Maintains constant oven temperature.
9) Burner Assembly: FID Burner.
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Section 5 Model 300 HFID/MHFID Analyzer
Operations and Maintenance Manual 300HFID V7.0.doc 5-20
10)Methane Cutter: Removes ALL THC, except Methane.
11)Heated Sample Pump/Motor: Provides sample to Burner Assembly.
12)Fuel Proportional Control Valve: Regulates Pressure to Fuel Orifice.
13)Air Pressure Regulator: Regulates Pressure to Air Orifice.
14):Sample Proportional Control Valve: Regulates Sample Pressure to
Burner.
15)Fuel Bleed Valve to Cutter: Adds Fuel to Cutter.
16)THC/Methane Solenoid Valve: Switches between THC and CH4.
17)Instrument Circulation Fan: Provides Internal Air Circulation.
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