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SERVOPRO Chroma Operator Manual 04400001A_6

SERVOPRO Chroma Operator Manual 04400001A_6

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SERVOPRO Chroma Operator Manual 04400001A_6

Product catalog summary

Description and Definitions

Scope: This manual provides comprehensive guidance on the operation of the SERVOPRO Chroma Gas Analyser.
Safety Information: Essential safety protocols are outlined to ensure safe operation.
Description: The Chroma Gas Analyser is detailed, including its components like the Plasma Emission Detector (PED), Flame Ionisation Detector (FID), and Thermal Conductivity Detector (TCD).

Specifications

General: Provides an overview of the analyser's capabilities and technical specifications.
Gas and Ovens: Details on gas specifications and oven requirements.
Environmental Limits: Specifies operational environmental conditions.
Outputs and Ports: Information on digital relay outputs, 4-20 mA outputs, and various communication ports.

User Interface

Controls: Describes various user interface controls such as edit boxes, radio controls, and push buttons.
Menus: Detailed explanation of menu functions including Run, Historic, Diagnostic, and Configuration menus.

Installation and Setup

Electrical Installation: Guidelines for safe electrical connections and configurations.
Gas Installation: Instructions for selecting materials and making gas connections.

Start-up and Shutdown Procedure

Procedures: Step-by-step instructions for starting up and shutting down the analyser.

Maintenance

Routine Maintenance: Regular maintenance tasks to ensure optimal performance.

Compliance and Addendums

Compliance: Information on compliance with industry standards.
RS-232 and FID Addendums: Additional configuration and troubleshooting information for specific components.

Overview
The document is a technical manual for the SERVOPRO Chroma Gas Analyser, providing detailed instructions for installation, operation, and maintenance. It is designed for measuring impurities in bulk gases and is equipped with various detectors depending on the application.

Safety Information
The manual emphasizes the importance of understanding safety warnings and cautions to prevent personal injury, equipment damage, or property damage. Warnings indicate potential hazards that could result in injury or death, while cautions relate to potential equipment damage.

Product Description
The SERVOPRO Chroma is a 19” rack-mounted online trace gas analyser. It is pre-configured and requires minimal operator intervention. It measures impurities such as H2, O2, N2, Ar, CH4, CO, CO2, and NMHC in various background gases. The analyser can be equipped with different detector types, including Plasma Emission Detector (PED), Thermal Conductivity Detector (TCD), or Flame Ionisation Detector (FID).

Configuration and Features
The analyser consists of a master chassis and possibly one or more secondary chassis or a PC. It includes an auxiliary oven and an electronic system for detector control and data acquisition. The SERVOPRO Chroma software controls all instrument parameters and provides advanced diagnostic tools and trending features.

Outputs and Alarms
The analyser provides a 4-20 mA isolated output for each impurity peak, with up to eight outputs for the main chassis. It supports two operating ranges per peak with a user-selectable multiplication factor. There are also dry contact outputs for process alarms and remote range identification.

Overview of SERVOPRO CHROMA Gas Analyser:
The document provides a detailed technical description of the SERVOPRO CHROMA Gas Analyser, focusing on its components, functionalities, and operational guidelines. Key sections include descriptions of various detectors, signal conditioning, and rear connections.

1. Plasma Emission Detector (PED):
The PED uses a spectroscopic emission cell to measure impurities from ppb to ppm levels. It operates by ionizing carrier gas in a high-frequency electromagnetic field, resulting in plasma that emits spectral lines. Impurities alter these emission spectra, allowing for their detection.

2. Flame Ionisation Detector (FID):
Designed to measure hydrocarbons from sub ppm to percentage levels, the FID burns sample gas in a hydrogen flame, producing ions detected by a collector. The SERVOPRO Chroma uses transistors for stable, low-noise performance, measuring currents from femtoamperes to milliamperes.

3. Thermal Conductivity Detector (TCD):
The TCD determines gas mixtures at percentage levels by comparing the thermal conductivity of carrier gas and impurities. Changes in thermal conductivity affect the temperature of detector wires, altering electrical resistance and allowing measurement.

4. Signal Conditioning:
This module provides high gain with minimal drift and noise, using a low-noise, high-stability analogue power supply. It can handle signals from up to seven detectors and communicates with the main PC via a microcontroller.

5. Main PC and Graphic Display:
The main PC manages user interface I/O, sending information to the I/O and Signal Conditioning boards. It features a keypad and color graphic display.

6. Oven Heater and Control:
Up to six ovens can be fitted, with temperature controlled by PID loops and measured using RTD. The heater operates on a PWM scheme, with electronic relays minimizing EMI.

7. I/O Board:
Handles all I/O functions, with digital and analogue inputs/outputs protected by fuses. It connects to an external 40-pin I/O connector, facilitating easy disconnection.

8. Rear Connections:
Details the complete and reduced rear connections for the analyser, including power, gas inlets, and communication ports. Specific configurations depend on the analyser setup.

9. Auxiliary Oven:
Used for N2 impurity analysis, it connects to specific channels to remove interfering background gas before detection.

10. Standalone PC Connections:
Includes power, RS-232, USB, and Ethernet ports. Compliance with EU EMC Directive requires specific cable fittings.

Warnings and Cautions:
The document includes several warnings about the proper use and installation of the analyser to prevent damage, voiding warranties, or causing safety hazards.

Software License:
Outlines the Microsoft software license terms for the Windows operating system used in the analyser, including usage rights and restrictions.

Summary of the Document:

1. Governing Law and Consumer Rights: The document outlines that the governing law for claims and disputes related to the software is based on the user's location. It highlights that consumer rights may vary by region, and specific provisions apply to regions like Australia, Canada, the European Union, Germany, and Austria.

2. Additional Notices: The document includes notices about network usage, video standards, malware protection, and limited rights versions of the software. It specifies that certain features may require internet access and that users are responsible for understanding their service agreements.

3. Warranty and Liability: The software is provided "as is" without express warranties. The document details the limitations of liability, stating that users bear the risk of software quality and performance. Remedies for breach of warranty are limited to repair, replacement, or refund.

4. Specifications of SERVOPRO CHROMA Gas Analyser: The document provides detailed specifications for the SERVOPRO CHROMA Gas Analyser, including dimensions, weight, electrical supply requirements, and pressure ratings for carrier and sample gases. It also includes specifications for different types of ovens and environmental limits.

5. Safety and Compliance: The document emphasizes the importance of installing and using the analyser according to specified requirements to ensure accurate measurements and prevent damage. It includes cautions related to EU EMC Directive compliance and potential errors due to external RF signals.

6. Technical Specifications: Detailed technical specifications are provided for gas types, pressure ranges, flow rates, oven temperatures, environmental limits, digital relay outputs, and 4-20 mA outputs.

Technical Specifications

4-20 mA Outputs: Current range is 4 to 20 mA, with a maximum of 24 mA. Cable requirements include a multi-strand twisted pair with an overall screen, size 0.2 – 3.3 mm² (24-12AWG), and a maximum length of 30 m.
Digital Inputs: Maximum voltage is 24 VDC, and maximum current is 1 Amp. Cable requirements are a multi-core cable with an overall screen, size 0.2 – 3.3 mm² (24-12AWG), and a maximum length of 30 m.
Hydrogen Relay Output: Available with FID detector, maximum voltage 24 VDC, maximum current 1 Amp. Cable requirements include a multi-core cable with an overall screen, maximum size 0.82 mm² (18 AWG), and a maximum length of 30 m.
Ethernet Port: Uses 10/100 BaseT standard with RJ45 (CAT5 UTP) connector, maximum length 30 m. Caution advised for external routing.
RS-232 Port: Requires a NULL modem shielded cable, maximum length 10 m.
RS-485 Port: Uses D-sub HD15 Male/Male shielded cable, maximum length 0.75 m.
USB Connector: Requires a shielded standard USB cable with a male Type A connector, maximum length 1 m.
Mains Input Cables: Type IEC 60320-1-C13, screened, specified for 10 A / 250 Vac, maximum length 2 m.

User Interface

Controls: Includes Edit Box, Radio, Slide, Push Button, Grid, Combo, Check Box, and Tab controls, each with specific keyboard and mouse operations.
Menu Structure: Functions are grouped in menus, including Run Menu, Historic Menu, and Diagnostic Menu.
Run Menu: Features Real Time Chromatogram Menu for cycle initiation and visualization, with controls for Start/Stop, Injection Mode, Historic Values, and more.
Historic Menu: Displays system alarms, peak value alarms, and event logs. Alarms are categorized into system alarms, peak value alarms, and peripheral alarms.
Diagnostic Menu: Provides system diagnostics for troubleshooting and maintenance.

Diagnostic Menu Overview
The diagnostic menu is organized into hardware component groups, including acquisition boards, IO boards, and pressure regulators. Each group displays specific parameters based on the analyser's configuration. Key data includes cell counts, chromatogram signals, active detectors, gain, pre-amp settings, offset, scale factor, polarity, flow rates, oven temperatures, detector generator power, and pressure regulator details.

Diagnostic Menu Parameters
Parameters such as active detector, gain, pre-amp, scale factor, polarity, zeroing, and detector generator power can be manually adjusted to aid in troubleshooting.

Analyse Chromatogram
The Analyse Chromatogram menu allows users to analyze chromatograms and set peak start and end times. Users can load, delete, and export chromatograms, and utilize functions like zooming and setting positions.

Trending
The trending menu is used to identify peaks and configure settings such as peak times, gain, generator power, and frequency. Users can start/stop trending, adjust generator power, re-zero detectors, and manage valve states.

Advanced Diagnostic
This menu provides control over 4-20 mA outputs, relay diagnostics, valve diagnostics, and alarm/status relay states.

Configuration Menu - System
The system configuration menu allows adjustments to analogue output modes, mA failure modes, generator starting modes, range modes, auto-start on boot-up, flow set points, and oven set points. These settings are crucial for maintaining system stability and performance.

Oven Set Point Configuration: The oven's real temperature is displayed in the third column of the Oven Set Point grid. To adjust the set point, modify the value in the second column. The desired temperature may take several minutes to stabilize. The set point ranges from 0 to 300 with a resolution of 1, and a regeneration setting of 200. These settings are factory configured and should not be changed.

Remote Starting Enable: This feature allows a cycle to be initiated via digital input #1. The countdown begins when 24 Volts is applied, and the cycle starts when the countdown reaches zero. Removing the voltage prematurely will restart the countdown.

Screen Saver Enable: Activating this option enables the screen saver, with the screen powering off after a specified time. The screen can be reactivated by moving the mouse or pressing a key.

Reload Manufacturer Settings: This function restores the analyser to its factory settings. It is advised to contact Servomex before using this feature.

Range Configuration: This section configures relays on the I/O Board for Peak Ranges. The Lock Range button can lock or unlock analyser ranges, preventing changes even if manual ranging is enabled.

Print Configuration: This option prints the current system configuration, useful for analysers with multiple configurations.

Change Password: Allows setting a new password for the SERVOPRO Chroma, which is initially the analyser's serial number.

Change Configuration: For analysers with multiple configurations, this button changes the active configuration, updating all parameters accordingly.

Proportional Integral Derivative (PID): Accessed via the Configuration menu, this section is factory configured and should not be altered.

Flow Configuration: Displays the flow sensor table set up during factory configuration, useful for servicing the analyser.

Cycle Configuration: Contains system information for ongoing cycles, including cycle duration and peak assignments. These settings are factory configured.

Peak Configuration: Used during analysis, this menu allows real-time parameter changes for each peak. It includes columns for peak name, average, start and end times, detector number, alarms, ranges, and units. These settings are factory configured.

Valve Data: Controls valve states with factory-set timings for valve operations.

Flow Timing Configuration: Used to change flow set points during a cycle, with factory-set timings.

Date & Time Configuration: Allows setting the date and time via the Configuration menu.

Advanced Configuration: A resource for service technicians, defining hardware component configurations. Access requires a password, and changes should only be made under Servomex supervision.

Alarm Configuration: Allows setting the active state for alarm relays on the I/O Board.

Printers Configuration: Lists installed printers and allows adding or removing printers. Network printers are recommended for security.

Export Analyser Configuration: Allows backing up the analyser configuration to a USB stick.

Analyser Calibration: Recommended monthly, this process includes Noise Threshold and Span Calibration. The analyser must be properly started and purged before calibration.

Noise Threshold Calibration:
1. Adjust the slider to select either All peaks or Selected peaks for calibration.
2. Start calibration by clicking the Start (F4) button.
3. After manual injection, press Calculate Threshold to display the RMS value.
4. Completion is indicated by YES in the TRS done column.
5. Disable calibration using the Disable (F2) button.

Span Calibration:
1. Select Automatic Injection in the Run-Real Time Chromatogram.
2. Access Calibration-Calibration menu.
3. Set calibration gas values for each peak.
4. Enter calibration points, minimum two required.
5. Enable Span Calibration with Enable (F3) button.
6. Start calibration with Start (F6) button.
7. After consistent peak values, press RE-SPAN to accept calibration.
8. Completion is indicated by YES in the Span Done column.
9. Disable Span Calibration with Disable (F3) button.

4-20mA Output Calibration:
1. Access via Calibration menu.
2. Select I/O board and output to calibrate.
3. Connect an ammeter and set output values.
4. Enter ammeter readings and calibrate.

Remote Configuration:
1. Configure IP address via Remote menu.
2. Set Static or DHCP IP address.
3. Disconnect from Data Monitoring Software when necessary.
4. Test USB key detection for data acquisition.

Chromatogram Saving:
1. Enable storage from HISTORIC-CHROMATOGRAM menu.
2. Data stored until 99% capacity, then overwritten.
3. Transfer data to USB key when needed.

Installation and Setup:
1. Follow electrical safety instructions.
2. Connect master and secondary chassis using provided cables.
3. Ensure proper earth connection and cable routing.

Electrical Connections

Digital Input: Used for remote analysis start, requires shielded twisted cable. Ensure insulation from mains circuits.
Digital Output Contacts: Up to 12 unpowered outputs, shielded cable required. Insulation from mains circuits is necessary.
4-20 mA Outputs: Requires shielded twisted cable and differential input for monitoring. Each output is impurity-specific.
RS-485 Port: For communication between analyser chassis only, not for third-party systems.
RS-232 Port: Allows remote control via computer with appropriate software.
Auxiliary Oven Port: Connects to auxiliary oven, not suitable for third-party ovens.
FID Fuel Shut-off Relay: Requires connection to prevent fuel accumulation.

Gas Installation

Do not pressurize the analyser carrier or sample inlet to avoid damage.
Use 1/8" stainless steel tubing for gas line connections.
Install a by-pass rotameter to improve response time.
Use high-grade carrier gas and stable pressure regulators for optimal performance.

Start-up and Shutdown Procedure

Start-up: Verify voltage, connect and purge carrier gas, adjust pressures, and verify system integrity.
Shutdown: Follow software prompts to safely power down the analyser.

Shutdown Procedure:
1. Ensure the shutdown procedure is completed to prevent data loss.
2. Allow the column to cool for one hour with all gases connected.
3. Disconnect all gases.
Warning: Do not install caps on vents if carrier or sample gas inlets are still connected to avoid detector damage.
4. Install caps on all inlets and outlets.

Routine Maintenance:
1. Ensure carrier flow matches the specified configuration. Check in manual injection mode.
2. Verify oven temperature periodically in the diagnostic menu.
3. Maintain sample flow as per previous calibration, default is 50 cc/min per channel.
4. Clean the cabinet fan filter regularly.
5. Replace the trap in the auxiliary oven periodically for applications with O2 and H2 gases.
6. Replace the SERVOPRO Puregas gas purifier every two years.
7. Replace the permeation tube every five years.

Storage and Disposal:
1. Follow the shutdown procedure before storage.
2. Store in a clean, dry area, avoiding extreme conditions.
3. Dispose of equipment according to local and national regulations, not in municipal waste streams.

Compliance:
The analyser complies with various directives including the European Community Electromagnetic Compatibility Directive, Low Voltage Directive, and US FCC Rules for Class B equipment. It meets standards for domestic, commercial, and light industrial environments.

RS-232 Communication:
1. Baud rate: 38400, Parity bits: none, Data bits: 8, Stop bits: 1.
2. Command sets include start analysis, analyser status, send results, enable-disable calibration, and respan functions.

RS-232 Configuration and Commands
The document outlines the RS-232 communication protocol for changing configurations in the SERVOPRO Chroma Gas Analyser. It includes command structures, response codes, and the time required for the analyser to reboot after a successful configuration change.

Flame Ionisation Detector (FID) Setup
The FID setup involves several advanced configuration menus:

General Menu: Used for adding or removing FIDs.
FID Menu: Allows modification of FID settings, which must be saved to take effect.
Detector Menu: Used to modify detector settings, including acquisition board and channel selection.
Flow Menu: Names each flow/pressure regulator associated with the FID.
Oven Menu: Names the oven associated with the FID.

Settings are factory-configured and should not be changed unless necessary.

FID Monitoring and Configuration
The document describes various menus for monitoring and configuring the FID, including system configuration, real-time chromatogram, trending, and flow configuration menus.

FID Diagnostic and Cycle Configuration
The diagnostic menu allows changes to FID parameters such as gain, offset, and pre-amplification. The cycle configuration menu is used to set log amplifier parameters for each FID peak.

FID Startup Procedure
The startup procedure involves connecting gases, setting flow points, waiting for temperature stabilization, and igniting the detector. Specific flow set points are provided for purging and ignition.

FID System Errors
Common errors include air and fuel flow deviations, low flow conditions, temperature deviations, and glow plug damage. Each error has specific conditions under which the flame cannot be ignited.

FID Troubleshooting
The document provides a troubleshooting guide for common issues such as burner ignition failure, noisy readings, and loss of sensitivity. Solutions include purging systems, adjusting flow set points, and contacting Servomex for support.

Analyser Troubleshooting
Typical issues with the SERVOPRO Chroma are addressed, including baseline noise, unstable baselines, and no peak detection. Causes and solutions are provided for each symptom, emphasizing the importance of proper gas purity and system maintenance.

Specifications and Procedures:

Plasma power must be set to 100% for all plasma operations.
Connect span calibration gas to sample inlet 2 and process to sample inlet 1.
Ensure span pressure is set to 30 PSIG at the analyser's back.
Carrier pressure must be appropriate and stable, not exceeding 100 PSIG.
Install a moisture trap, noting it may delay system response time.
Sample gas pressure should not exceed 30 PSIG and must remain stable.
Verify carrier gas set points, flow stability, and oven temperature as per analyser TRS.
Revalidate PIDs and save the flow table.
Change span bottle if content is below 10% of original.

Recommendations:

Install the instrument in a temperature-regulated room to mitigate ambient pressure and temperature effects.
Use new calibration span bottles from different batches to confirm analyser detector response.
Ensure detectors are not pressurized to avoid damage to the plasma quartz cell.
Eliminate dead volumes by purging or performing static purges if necessary.
Verify column temperature stability and valve timing as per analyser TRS.
Clean chromatographic columns by heating to 150 °C for 24 hours if polluted.

Troubleshooting and Maintenance:

Contact Servomex for assistance if needed.
Ensure process gas is free of contamination.
Adjust carrier supply pressure to match vent flow specifications in the analyser TRS.

Product Disposal – WEEE Directive:

The analyser falls under the Waste Electrical and Electronic Equipment (WEEE) Directive.
It should not be disposed of in municipal waste but submitted for recycling per local regulations.
Contact Servomex for disposal information and ensure a decontamination certificate accompanies the analyser.

REACH Regulation:

Information on Substances of Very High Concern (SVHC) in Servomex products is available on their website.

Catalog excerpts

SERVOPRO Chroma Operator Manual 04400001A_6-1

SERVOPRO Chroma OPERATOR MANUAL OPERATOR MANUAL Part Number: Revision: Language:

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SERVOPRO Chroma Operator Manual 04400001A_6-2

SERVOPRO CHROMA Gas Analyser

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SERVOPRO Chroma Operator Manual 04400001A_6-3

SERVOPRO CHROMA Gas Analyser TABLE OF CONTENT Section

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SERVOPRO Chroma Operator Manual 04400001A_6-4

SERVOPRO CHROMA Gas Analyser

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SERVOPRO Chroma Operator Manual 04400001A_6-5

SERVOPRO CHROMA Gas Analyser

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SERVOPRO Chroma Operator Manual 04400001A_6-6

SERVOPRO CHROMA Gas Analyser

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SERVOPRO Chroma Operator Manual 04400001A_6-7

SERVOPRO CHROMA Gas Analyser LIST OF TABLES Table name

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SERVOPRO CHROMA Gas Analyser LIST OF FIGURES Figure name

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SERVOPRO CHROMA Gas Analyser

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SERVOPRO Chroma Operator Manual 04400001A_6-10

SERVOPRO CHROMA Gas Analyser 1 DESCRIPTION AND DEFINITIONS 1.1 Scope of this manual This manual provides installation, operation and routine maintenance instructions for the SERVOPRO Chroma Online Trace Gas analyser, abbreviated to “SERVOPRO Chroma” or “analysers” where applicable in the reminder of this manual. 1.2 Safety information Read this manual and ensure that you fully understand its content before you attempt to install, use or maintain the SERVOPRO Chroma. Important safety information is highlighted in this manual as WARNINGs and CAUTIONs, which are used as follows. WARNING Warnings...

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SERVOPRO Chroma Operator Manual 04400001A_6-11

SERVOPRO CHROMA Gas Analyser 1.3 Description of Chroma Gas Analyser 1.3.1 Introduction The SERVOPRO Chroma is a 19” rack mounted online trace gas analyser, shipped pre-configured and requires little operator intervention. The analyser measures impurities in bulk gases, such as H2, O2, N2, Ar, CH4, CO, CO2 and NMHC impurities in H2, O2, N2, Ar or He background gas. The analyser configuration - form factor, detector(s), column(s), and valves - is application dependent. The analyser can be fitted with a number of detector types – Plasma Emission Detector (PED), TCD (Thermal Conductivity Detector),...

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SERVOPRO Chroma Operator Manual 04400001A_6-12

SERVOPRO CHROMA Gas Analyser 1.3.2 Plasma Emission Detector (PED) The plasma emission detector (PED) is based on a spectroscopic emission cell, which is an established technique to measure impurities from the ppb to ppm level. The characteristics which make the plasma system stable and selective are the frequency, intensity, regulation, the coupling technique and the focusing (stabilizing) electrodes. The carrier gas flows at atmospheric pressure through a proprietary pure quartz cell. The cell is submitted to a high frequency high intensity electromagnetic field. This ionizes the carrier gas...

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SERVOPRO Chroma Operator Manual 04400001A_6-13

SERVOPRO CHROMA Gas Analyser 1.3.4 Thermal Conductivity Detector (TCD) The Thermal Conductivity Detector (TCD) is a universal technique suitable to determine mixture of gases at percentage levels. The TCD compares the thermal conductivity of two gas flows – the pure carrier (reference) gas and the impurity eluting from the GC column. Changes in the temperature of the electricallyheated wires in the detector are affected by the thermal conductivity of the gas which flows around this. The changes in this thermal conductivity are sensed as a change in electrical resistance and are measured. The...

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SERVOPRO Chroma Operator Manual 04400001A_6-14

SERVOPRO CHROMA Gas Analyser 1.3.8 I/O board The I/O board holds all the I/O functions of the instrument, shown in the table below. Digital I/O ❖ 6 oven temperature RTD input ❖ 8 isolated process 4-20 mA output 1 isolated digital input 8 remote range dry contact outputs 2 alarm dry contact outputs 1 system status dry contact output 1 extra relay 10 G.C. valve contact outputs 6 oven power relays All digital inputs and outputs, analogue inputs and outputs are transient and fuse protected. The I/O board is connected to an external 40 pin I/O connector through a flat cable connector The 40 pin I/O...

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SERVOPRO Chroma Operator Manual 04400001A_6-15

SERVOPRO CHROMA Gas Analyser 1.4 Description of Analyser Rear Connections 1.4.1 SERVOPRO Chroma Complete Rear Connections Figure 1 : SERVOPRO Chroma complete rear connections This rear panel is fitted to the master chassis, and to the secondary chassis in a system with a stand-alone PC. 1. Power inlet with switch and fuse 2. Gas trap inlet 3. RS-232/RS-485 socket 4. Auxiliary oven 5. RS-485 socket 6. Gas trap outlet 7. Ethernet port 8. USB port 9. Analogue 4-20 mA outputs 10. Digital outputs 11. Digital input 12. Earth terminals for cable screens 13. Carrier gas inlet to detector 1 14. Carrier...

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SERVOPRO Chroma Operator Manual 04400001A_6-16

SERVOPRO CHROMA Gas Analyser 1.4.2 SERVOPRO Chroma Reduced Rear Connections Figure 2 : SERVOPRO Chroma reduced rear connections This rear panel is fitted to the secondary chassis in a system with a master chassis. 1. Power inlet with switch and fuse 2. RS-485 3. Carrier gas inlet 4. Carrier gas vent 5. Detector 1 vent 6. Detector 2 vent 7. Sample gas vent 8. Sample gas inlet 1 (process) 9. Sample gas inlet 2 (span) Note: the RS-232 port is replaced with a RS-485 port on Secondary Chassis 1 on an analyser with multiple secondary chassis.

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SERVOPRO Chroma Operator Manual 04400001A_6-17

SERVOPRO CHROMA Gas Analyser Gas connections when FID Detector is fitted Figure 3 : Gas connections when FID Detector fitted When a FID detector is installed in the SERVOPRO Chroma, the function of some of the rear gas connections are changed, as shown in Figure 3. 1. 2. 3. 4. FID Detector vent Fuel inlet Air inlet H2 contacts to control the fuel shut-off valve (see section 6.2.7) See Section 12 for more information on the FID detector.

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SERVOPRO Chroma Operator Manual 04400001A_6-18

SERVOPRO CHROMA Gas Analyser 1.5 Auxiliary Oven 1.5.1 Description of Auxiliary Oven The Auxiliary Oven is an external module used when analysing N2 impurity in either H2 or O2 background gas. It is connected to the specific channel making the N2 determination, and removes the small volume of interfering background gas which has co-eluted with the N2 prior to the passing to the detector. 1.5.2 Auxiliary Oven Rear Connections Figure 4 : Auxiliary Oven rear connections 1. Power inlet 2. Oven inlet (connect to Trap In gas connector on Master or Secondary Chassis) 3. Oven outlet (connect to Trap Out...

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SERVOPRO Chroma Operator Manual 04400001A_6-19

SERVOPRO CHROMA Gas Analyser Standalone PC Rear Connections Figure 5 : Standalone PC rear connections Power inlet with switch and fuse RS-232 port for remote terminal (marked “AUX”) RS-232 port for secondary unit (marked “TO ANALYSER”) USB port Ethernet port CAUTION To comply with the requirements of the EU EMC Directive, data cables used with the standalone PC (USB, Ethernet,) must be fitted with ferrite beads (Würth 74271131 or 74271221, depending on cable size), which should be clamped around 2 turns of cable. CAUTION To comply with the requirements of the EU EMC Directive, the front USB port...

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