Michell Instruments Condumax II Specifications

Process Analyzers

Condumax II Transportable

Hydrocarbon & Water Dew-Point Analyzer

Transportable natural gas dew-point analyzer system for operation in the eld. Suitable for IEC
Zone 1 or 2 hazardous area, NEC Class I, Division 1 Groups B, C, D.

A complete transportable natural gas dew-point analysis system for eld spot-check measurements. Periodic online operation
when located in a temperature maintained analyzer house. Measurements and functionality are instantly accessible through
integrated alphanumeric display and touch-glass HMI interface including log of dew-point readings for operator review.

Highlights

• Field transportable self-contained dew-point
analyzer system

• Simultaneous HC and water dew-point
measurements in a single analyzer

• Automatic objective measurements by industry

proven principles

• Parameter specic sensors ensure continuity of
HC and water dew-point readings

• Self-contained sample handling, conditioning and
analysis package

• 0.5°C HC dew-point accuracy

• Fundamental cooled mirror principle

Applications

• Spot-check measurements of HC and water dew
point

• Field verication of installed on-line dew-point
analyzers

• Flexibility for periodic measurements at any gas

source

• Producer process stage proling to optimize
eciency

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Process Analyzers

The Industry Standard HCDP/WDP
Analyzer

The Condumax II fullls the demands of natural gas
producers and pipeline transmission companies for reliable
on-line monitoring of natural gas hydrocarbon and water
dew point.

Condumax II is the industry’s analyzer of choice to
ensure conformance of these key gas quality parameters,
from production processing, through trans-continental
pipeline networks into nal distribution and utilization by
major consumers such as power generators. Throughout
the midstream industry Michell hydrocarbon dew-point
analyzers are installed as permanent analyzers, providing
measurements six times every hour 24/7/365.

Transportable Condumax II for Field
Validation

The Condumax II Transportable addresses the further
needs of natural gas users as the industry evolves. With
an increased proportion of alternative fuel sources such
as biogas, and greater reliance on LNG imports into gas
networks which traditionally received gas solely from
xed upstream producers, the attention to ensuring
accurate measurement of dew point has never been more
critical. This increased complexity of supply chains has

expanded the number of potential measurement points

each requiring conformity to specication. The Condumax
II Transportable oers the exibility to make investigative
spot-check measurements at any location, to even the
smallest and most remote gas source. Furthermore, for
the gas producer, the Condumax II Transportable can be
used to prole individual process stages to ensure optimum
eciency.

Quality Assurance with a New Transfer
Standard

The Condumax II Transportable also enables established
users of permanent on-line dew-point analyzers to carry
out periodic comparative measurements in the eld to
verify measurement performance against the certied
factory laboratory calibration of the Condumax II to all
users.

The Condumax II Transportable oers automatic
measurements of high sensitivity and objectivity wherever
they are needed in a simple to use, self-contained, sample
handling, conditioning and analysis package.

Sample Conditioning System

• Complete integration of Condumax II Main Unit

• System conguration for connection direct to

transmission pipeline natural gas at typically 70 barg

pressure

• Simultaneous water dew-point measurement at process

pressure. Integration of water dew-point sample ow in

series for analysis at full line pressure

• Process pressure gauge, 100 barg scale

• Coalescing lter with by-pass needle valve and system
drain

• Sample gas pressure reduction via electrically-heated

regulator for analysis of HC dew point at intermediate
pressure (cricondentherm condition), adjustment range
up to 35 barg tted (analysis pressure indicated by
Condumax II Main Unit)

• Sample ow control with armored rotameter

*To assure correct measurement performance of

this system in outdoor eld use, the ambient air

temperature must be at least 5°C above both the

hydrocarbon dew-point temperature of the process

gas sample at the cricondentherm condition,

typically 27 barg, and water dew-point at full

process line pressure.

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550mm

(21.6”)

335mm

(13.2”)

670mm

(26.4”)

Dimensions

Process Analyzers

System Package

• Custom designed and built carry case of heavy duty
construction in 316 stainless steel with six vibration
absorbing feet on base (for transportation) and on one
edge (for upright analyzer system operation)

• Removable case lid secured by four toggle latches. Six
carry handles for ease of mobility by two persons and

transportation between sites by automobile

• Power consumption: <300 W, 110 V, 60 Hz or 230 V,

50 Hz (dependent on unit purchased)

• Power Connection: Junction box provided with M20
or 1/2” NTP gland entry. Local AC connection to by
customer’s site electrician in accordance with local
codes of practice

• Weight (inclusive of Condumax II Main Unit):
60kg approximately

Condumax II Flow Schematic

PRESSURE

GAUGE

SAMPLE GAS INLET

(100 BARG MAX)

COALESCING

FILTER



PRESSURE

REGULATOR



Weight: 60kg (approx)

System Connections

• Minimess® stainless steel braided, micro-bore hoses

• Sampling system connection: Minimess® quick connect

• Set of 3 hoses: Sample inlet, coalescing lter drain /

• Length: 3m (each hose)

• Process connection: 316 stainless steel, 1/4” NPT male

• Gas wetted bore: PTFE, 2mm internal diameter

CONDUMAX II

ANALYZER

HC DEW POINT

WATER DEW POINT

by-pass and sample gas exhaust

NON-RETURN

VALVE

METERING

VALVE



NEEDLE

VALVE

FLOWMETER







SAMPLE GAS

OUTLET

BYPASS GAS

OUTLET

Hydrocarbon dew point - measured at cricondentherm condition
Water dew point - measured at line pressure

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Process Analyzers

Technical Specications

Condumax II Main Unit
Analyzer

Hydrocarbon Dew-Point Measurement

Measuring technique Dark Spot™ xed sample analysis; Direct

Sensor cooling Automatic via 3-stage Peltier eect

Maximum range Up to Δ 55°C measurement depression from

Resolution 0.1°C, 0.1°F

Accuracy ±0.5°C hydrocarbon dew point (single and

Sample ow 0.03 to 0.06 m3/hr (0.5 to 1.0 Nl/min)

Measurement frequency 6 cycles/hour (recommended)

Operating Pressure Max. 100 barg (1450 psig)

photo-detection of hydrocarbon condensate
at hydrocarbon dew-point temperature

electronic cooler under adaptive control

main unit operating temperature

multiple condensable component analysis)

- low ow alarm standard

12 cycles/hour (maximum)

Water Dew-Point Measurement

Measuring technique Michell Ceramic Moisture Sensor

Unit Selection

Resolution 0.1°C, 0.1°F dew point

Range Calibrated from -100 to +20°C dew point

Accuracy ±1°C from -59 to +20°C dew point

Operating Pressure Max. 138 barg (2000 psig)

Dew point

Moisture content

°C and °F water dew point
lbs/MMscf; mg/m3, ppmV
(conversion method IGT#8 or ISO18453)

0.1 lbs/MMscf, 1 mg/m3 ppm

±2°C from -100 to -60°C dew point

V

Pressure Measurement(s)

Hydrocarbon dew-point analysis pressure

Units MPa, barg, psig

Resolution 0.1 MPa and barg, 1 psig

Accuracy

Hydrocarbon dew point

Water dew point

±0.25 barg
±0.5 barg

Hydrocarbon and Water Dew-Point Analyzer

Sample gas supply Natural gas up to 100 barg, pressure

Enclosure Travel case is stainless steel 316 material

Gas connections Sample inlet, lter by-pass outlet, system

Operating environment Indoors/outdoors 0 to 40°C; Max 95% RH

Power supply 110 or 230 V AC, 50/60 Hz, 300 W

Weight 60kg (approx)

regulated in sampling system

construction with removable lid for access
and rubber feet for transportation /
operation;
Instrument is EExd cast enclosure with
removable viewing port: internally heated
for condensation protection

drain.
Sample system for: 1/4” NPT female ports,
Quick connect Minimess® hoses,
Process connections: 1/4” NTP male

*See cautionary note on page 2

Logged data

Each log

Visual review

Integrated display/
keyboard

Outputs Modbus RTU, RS485 @ 9600 baud rate;

Alarms Process and analyzer status via software

150 data logs, sucient for minimum 24
hour period (stored in volatile memory);
HC dew point and analysis pressure, water
dew point and process line pressure;
HMI display with automatic statistical
analysis; maximum, minimum, average
values for duration of log period

Touch screen with vacuum uorescent

display

Two 4-20 mA linear (non-isolated) outputs,
user congurable for any combination of
dew point or pressure parameters;
Additional connection junction box required

externally

register and display annotation. Integrated
low ow alarms for each sample ow
Analyzer status fault ag 23 mA on mA
output 1;
Comprehensive analyzer status messages
appear on HMI display;
Additional connection junction box required

externally

Certication

Hazardous area

certication

*Available to customer specic order — consult Michell
Instruments.

ATEX: II 2G Ex d e IIB+H2 T3
Gb Ta= -20°C to +40°C

IECEx: Ex d e IIB+H2 T3 Gb
Ta= -20°C to +40°C

Michell Instruments Ltd 48 Lancaster Way Business Park, Ely, Cambridgeshire, CB6 3NW
Tel: [phone], Fax: [phone], Email: uk.info@mi chell.com, Web: www.michell.com/uk

Michell Instruments adopts a continuous development programme which sometimes necessitates specication changes without notice.
Issue no: Condumax II Transportable_97149T_V5_UK_0419

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