Michell Instruments Condumax II Operating Manual
Condumax II
(Class 1 Division 1)
Hydrocarbon Dew-Point Analyzer
Sampling System
Installation, Operation & Maintenance Manual
97525, Issue 1
November 2016
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Condumax II
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© 2016 Michell Instruments
This document is the property of Michell Instruments Ltd. and may not be copied or
otherwise reproduced, communicated in any way to third parties, nor stored in any Data
Processing System without the express written authorization of Michell Instruments Ltd.
Condumax II Sampling System -
NEC Compatible IOM Manual
Contents
Safety ................................................................................................................................vi
Electrical Safety ...........................................................................................................vi
Pressure Safety ............................................................................................................vi
Toxic Materials .............................................................................................................vi
Repair and Maintenance ...............................................................................................vi
Safety Conformity ........................................................................................................vi
Abbreviations ..................................................................................................................... vii
Warnings ........................................................................................................................... vii
1 INTRODUCTION ................................................................................................1
1.1 General ............................................................................................................ 1
2 INSTALLATION ..................................................................................................4
2.1 Gas Connections ............................................................................................... 6
2.2 Power Supply Connection .................................................................................. 6
2.3 Output Wiring Connections ................................................................................ 7
3 OPERATION ......................................................................................................9
3.1 System Start-Up Procedure .............................................................................. 10
3.2 System Shut-Down Procedure .......................................................................... 11
3.3 Pressure Regulator Temperature Control ........................................................... 12
4 OPTIONS ........................................................................................................13
4.1 Enclosure Heater Temperature Control .............................................................. 13
4.2 Enclosure Cooling ........................................................................................... 13
5 MEMBRANE AND PARTICULATE FILTER ELEMENT REPLACEMENT .......................14
5.1 Service Intervals ............................................................................................. 14
5.2 Installing the Filter Element and Membrane ...................................................... 14
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Appendices
Appendix A Technical Specications ..............................................................................18
Appendix B Quality, Recycling & Warranty Information ................................................... 20
B.1 Pressure Equipment Directive (PED) 97/23/EC ..............................20
B.2 Recycling Policy .......................................................................... 20
B.3 WEEE Compliance .......................................................................20
B.4 RoHS2 Compliance ...................................................................... 21
B.5 Warranty ....................................................................................21
B.6 Reach Compliance ....................................................................... 22
B.7 Calibration Facilities ..................................................................... 22
B.8 Return Policy ..............................................................................23
B.9 Manufacturing Quality ................................................................. 23
Appendix C Analyzer Return Document & Decontamination Declaration .......................... 25
Figures
Figure 1 Condumax II Sampling System - Indoor Version ...........................................4
Figure 2 Condumax II Sampling System - Outdoor Version .........................................5
Tables
Table 1 Wire colors .................................................................................................6
Table 2 Terminal marks ...........................................................................................7
Table 3 Minimum cable requirements, power connectors ............................................7
Table 4 Wire Numbers, HC Dew-Point Version ...........................................................7
Table 5 Wire Numbers, HC and Water Dew-Point Version ...........................................8
Table 6 Minimum cable requirements, wire connectors ...............................................8
Table 7 Potentionmeter markings - CSA Version ...................................................... 12
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Condumax II Sampling System -
NEC Compatible IOM Manual
Safety
The manufacturer has designed this equipment to be safe when operated using the procedures
detailed in this manual. The user must not use this equipment for any other purpose than that
stated. Do not apply values greater than the maximum value stated.
This manual contains operating and safety instructions, which must be followed to ensure the safe
operation and to maintain the equipment in a safe condition. The safety instructions are either
warnings or cautions issued to protect the user and the equipment from injury or damage. Use
competent personnel using good engineering practice for all procedures in this manual.
Electrical Safety
The instrument is designed to be completely safe when used with options and accessories supplied
by the manufacturer for use with the instrument. The input power supply voltage limits are 110 to
120 V AC, 60 Hz or 220 to 240 V AC, 50 Hz.
Pressure Safety
DO NOT permit pressures greater than the safe working pressure to be applied to the instrument.
The specied safe working pressure is 100 barg (1450 psig). Refer to Appendix A, Technical
Specications.
Toxic Materials
The use of hazardous materials in the construction of this instrument has been minimized. During
normal operation it is not possible for the user to come into contact with any hazardous substance
which might be employed in the construction of the instrument. Care should, however, be exercised
during maintenance and the disposal of certain parts.
Repair and Maintenance
The instrument must be maintained either by the manufacturer or an accredited service agent. Refer
to www.michell.com for details of Michell Instruments’ worldwide ofces contact information.
Safety Conformity
This product meets the essential protection requirements of the relevant EU directives.
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NEC Compatible IOM Manual
Abbreviations
The following abbreviations are used in this manual:
AC alternating current
barg pressure unit (=100 kP or 0.987 atm)
°C degrees Celsius
°F degrees Fahrenheit
lbs pound(s)
kg kilogram(s)
HCdp hydrocarbon dew-point
Nl/min normal liters per minute
m meter(s)
mA milliampere
max maximum
m3/hour cubic meters per hour
mm millimeters
% percentage
psig pounds per square inch
temp temperature
V Volts
W Watts
Warnings
The following general warnings listed below are applicable to this instrument. They are
repeated in the text in the appropriate locations.
Where this hazard warning symbol appears in the following
sections it is used to indicate areas where potentially hazardous
operations need to be carried out.
Where this symbol appears in the following sections it is used to
indicate areas of potential risk of electric shock.
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1 INTRODUCTION
1.1 General
The Condumax II Hydrocarbon Dew-Point Analyzer Sampling System is specifically
designed for the measurement of hydrocarbon and water dew-point in natural gas.
The addition of water dew-point is optional to factory order. The system is configured
with the necessary pressure letdown and flow control required for measurement at
pressure before finally venting to an atmospheric or a low pressure flare line system.
A fast-loop bypass flow arrangement is included to reduce sample flow response time
lag and to enable the filter to be drained automatically of any potential hydrocarbon
liquids and hydrates formed. Tube and process connections are 1/4” OD.
HC dew-point analysis pressure is adjusted by a heated pressure regulator in the
range up to 35 barg (500 psig). However, it is typical for measurements to be made at
the cricondentherm condition of 27 barg (400 psig), where the highest HC dew-point
temperature will be detected on the retrograde phase envelope.
INTRODUCTION
The water dew-point (where fitted) is measured at full pipeline pressure, to determine
the highest water dew-point for the gas sample being analyzed.
The complete Condumax II Hydrocarbon Dew-Point Analyzer Sampling System can be
located close to the gas sample take-off point in a potentially explosive environment
- designated Class 1 Division 1 hazardous area.
The indoor version Sampling System gas handling components are assembled on
a stainless steel plate suitable for wall mounting within a temperature controlled
analyzer house.
The outdoor version Sampling System is housed within a stainless steel enclosure (304
or 316) for direct field installation next to the process line (with overall environmental
protection to IP66).
The Sampling System must be located in a constant temperature controlled environment
of at least +10°C (+18°F) above the highest envisaged dew-point temperature.
All sample gas wetted metallic parts are in AISI 316L stainless steel with Viton® soft
parts that comply with the NACE standard MR-01-75 (latest edition). Tube fittings are
twin ferrule compression type. All gas and cable entries are located in the base of the
enclosure.
The sample flow gas handling components are as follows:
• Gas Inlet Isolation Valve (BV1):
Allows user to manually isolate the system from the process sample gas
supply line for maintenance or servicing.
• Coalescing & Membrane Filter (F1):
Provides system protection from contamination of liquid carry-over of
hydrocarbon / glycol mist particles using membrane ltration.
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INTRODUCTION
• Line Pressure Gauge (PG1):
Indicates the sample gas line pressure.
• HCdp Pressure Regulator (PR1):
Allows the user to manually set the sample gas analysis pressure for
hydrocarbon dew-point measurement.
• HC and H2O Dew-Point Analyzer (Condumax II):
Provides measurement and output of hydrocarbon & water dew point of the
sample gas.
• Non Return Valve (NRV1):
Provides system protection from back pressure of vent gas when sample gas
is not owing.
Condumax II Sampling System -
NEC Compatible IOM Manual
• HCdp Flow Metering Valve (FV1):
Allows the user to manually set the sample gas ow rate across the
hydrocarbon dew-point sensor.
• HCdp Flowmeter (FM1):
Provides indication of the sample gas ow rate across the hydrocarbon dewpoint sensor.
• H2Odp Letdown Pressure Regulator (PR3) {if tted}:
Provides pressure letdown from line pressure to a lower vent pressure.
• Non Return Valve (NRV3) {if tted}:
Provides system protection from back pressure of vent gas when sample gas
is not owing.
• H2Odp Flowmeter/Metering Valve (FM3) {if tted}:
Allows the user to manually set and provide indication of the sample gas
owrate across the water dew-point sensor.
• Gas Outlet Isolation Valve (BV2):
Allows the user to manually isolate the system from the gas outlet line for
maintenance or servicing.
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The bypass ow gas handling components are as follows:
• Bypass Flow Letdown Pressure Regulator (PR2):
Provides pressure letdown from sample line pressure to a lower vent pressure.
• Non Return Valve (NRV2):
Provides system protection from back pressure of vent gas when sample gas
is not owing.
• Bypass Flowmeter & Valve (FM2):
Allows the user to manually set and provide indication of the bypass gas ow
rate across the membrane lter.
• Letdown Gas Vent Isolation Valve (BV3):
INTRODUCTION
Allows the user to manually letdown the sample gas pressure trapped in the
system for maintenance or servicing.
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