Hummingbird Communications Paracube Micro Instruction Manual

Instruction Manual

Manual Part Number: 01115009A

Revision: 9

Language: UK English

Product Part Numbers: 01115/XXX series

Analogue Paramagnetic Oxygen Sensor Module

Paracube

®

Micro

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WARNINGS, CAUTIONS AND NOTES

This publication includes WARNINGS, CAUTIONS and NOTES which provide, where

appropriate, information relating to the following:

WARNINGS: HAZARDS THAT MAY RESULT IN PERSONAL INJURY OR DEATH.

CAUTIONS: Hazards that will result in equipment or property damage.

NOTES: Alerts the user to pertinent facts and conditions.

WARNING

- (USE)

AS THE FINAL CONDITIONS OF USE ARE OUTSIDE HUMMINGBIRD’S CONTROL, IT IS THE

RESPONSIBILITY OF THE EQUIPMENT DESIGNER OR MANUFACTURER TO ENSURE THAT THE

SENSOR IS INTEGRATED IN ACCORDANCE WITH ANY REGIONAL STANDARDS OR

REGULATIONS GOVERNING THE FINAL APPLICATION.

THE SENSOR SHOULD NOT BE RELIED UPON AS A SINGLE SOURCE OF SAFETY MONITORING

UNLESS EXPRESSLY PERMITTED WITHIN THE REGIONAL STANDARDS OR REGULATIONS

GOVERNING THE FINAL APPLICATION.

NOTE

For safety reasons any sensor returned to Hummingbird must be accompanied by

the Decontamination Clearance Certificate contained in this manual. Unless the cell

is accompanied by this certificate, Hummingbird reserves the right to refuse to

undertake any examination of the product.

Apply appropriate anti-static handling procedures. Sensor returns must be packed in

the original packing material to prevent damage in transit.

NOTE

The information in this document is subject to change without notice.

This document contains proprietary information which is protected by copyright. All

rights are reserved. No part of this document may be copied, reproduced or

translated to another language without the prior written consent of Servomex Group

Ltd.

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UK Legislation

Health and Safety at Work Act 1974

Control of Substances Hazardous to Health Regulations 2002 (as amended)

Ionising Regulations 1999

Important Notice

Hummingbird ensure that all products despatched to customers have been suitably purged and cleaned
prior to packaging, so that no hazards from the use of factory calibration gases or liquids will be present.

No item returned to Hummingbird or its representatives, for any reason whatsoever, will be
accepted unless accompanied by a copy of the following form fully completed and signed by a
responsible person. This is a requirement to comply with the above listed legislation and to ensure
the safety of the employees of Hummingbird and its representatives.

…………………………………………………………………………………………

Please tick one of the following sections as applicable to your equipment.

Decontamination Statement.

It is hereby certified that a suitable and sufficient decontamination process has been carried out and we
have taken reasonable action to ensure that the returned equipment described below will be free of
potential toxic, corrosive, irritant, flammable, radioactive or biological hazards and is safe to be handled,
unpacked, examined and worked upon by Hummingbird employees and its representatives.

Please give detail of decontamination process used:-________________________________________
__________________________________________________________________________________

Decontamination Clearance Certificate.

It is hereby certified that the equipment described below has never been exposed to any potential toxic,
corrosive, irritant, flammable, radioactive or biological hazards, therefore it is reasonably expected that it
should be safe for Hummingbird employees and its representatives to handle, unpack, examine and work
upon the equipment described below.

Equipment ____________________________

______________________________________

Serial no ____________________________

Signature ____________________________

Print name ____________________________

Position ____________________________

Date ____________________________

Reason for return

_________________________________

_________________________________

_________________________________

_________________________________

Company _________________________

Company seal or stamp:-

Form: 5000/2 issue2

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CONTENTS

1 INTRODUCTION .............................................................................................................. 3

2 HUMMINGBIRD PARAMAGNETIC MEASUREMENT PRINCIPLE .................................. 4

3 PRODUCT SPECIFICATION ........................................................................................... 6

3.1 PERFORMANCE SPECIFICATION (UNDER CONSTANT CONDITIONS) ........................................ 6

3.2 MECHANICAL SPECIFICATION ........................................................................................... 7

3.3 EXTERNAL POW ER SUPPLY SPECIFICATION ....................................................................... 8

3.4 ENVIRONMENTAL SPECIFICATION ..................................................................................... 8

4 SENSOR INTEGRATION ............................................................................................... 10

4.1 SENSOR MOUNTING...................................................................................................... 10

4.2 ELECTRICAL ARRANGEMENT .......................................................................................... 13

4.3 ANALOGUE OUTPUT...................................................................................................... 14

4.4 LOCATION OF SENSOR .................................................................................................. 15

4.5 HOW TO MINIMISE EXPOSURE OF PNEUMATIC SYSTEM TO CONTAMINANTS ......................... 15

4.6 HOW TO HANDLE THE SENSOR ...................................................................................... 15

4.7 ORIENTATION OF SENSOR ............................................................................................. 16

4.8 CONDITIONING OF THE SAMPLE ...................................................................................... 16

4.9 PRESSURE EFFECTS..................................................................................................... 16

4.10 USE OF SENSOR W ITH FLAMMABLE / TOXIC SAMPLE GASES .............................................. 18

5 OPERATION AND CALIBRATION ................................................................................ 18

5.1 CALIBRATION – INITIAL CONDITIONS ............................................................................... 18

5.2 SINGLE POINT OFFSET CORRECTION (SPOC) ................................................................. 18

5.3 ZERO DRIFT OFFSET CORRECTION IN THE HOST EQUIPMENT ............................................ 22

5.4 LED SENSOR STATUS ................................................................................................... 22

6 VARIANTS, SPARES, PACKAGING AND WARRANTY ............................................... 23

6.1 SENSOR VARIANTS OPTIONS – AS SHIPPED FROM HUMMINGBIRD ...................................... 23

6.2 PRODUCT SPARES........................................................................................................ 23

6.3 SPECIAL PACKAGING .................................................................................................... 23

6.4 PRODUCT FAILURE DURING WARRANTY.......................................................................... 24

6.5 PRODUCT FAILURE OUT OF WARRANTY .......................................................................... 24

6.6 MAINTENANCE AND SERVICING ...................................................................................... 24

6.7 DECONTAMINATION....................................................................................................... 24

6.8 ROHS AND WEEE DIRECTIVES ..................................................................................... 25

7 APPENDICES ................................................................................................................ 26

APPENDIX 7.1 OUTLINE DIMENSIONS, KK FRICTION LOCK CONNECTOR............................... 26

APPENDIX 7.2 OUTLINE DIMENSIONS, SMT LOW PROFILE CONNECTOR .............................. 27

APPENDIX 7.3 PROCEDURE FOR FIXING OF THE ADAPTOR PLATE ........................................ 28

APPENDIX 7.4 MECHANICAL VIBRATION AND SHOCK RESISTANCE ....................................... 29

APPENDIX 7.5 SAMPLE GAS CROSS SENSITIVITY GUIDE .................................................... 30

APPENDIX 7.6 ROHS II DIRECTIVE 2011/65/EU DECLARATION .......................................... 33

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1 Introduction

The Paracube® Micro represents the latest generation of Hummingbird’s paramagnetic
sensing technology. The sensor takes advantage of recent technological advances
allowing a performance only previously available from sensors of much greater size
and cost.

The sensor offers the OEM true flexibility in both mechanical and communication
interfaces incorporating Hummingbird’s world renowned paramagnetic technology
which has been designed into many OEM products where reliability, long life and
performance are major considerations.

Hummingbird’s non-depleting paramagnetic technology ensures consistent
performance over time with added cost-of-ownership benefits. The selectivity of the
measurement to oxygen means there is no interference from other respiratory gases.
The sensor provides a stable oxygen measurement, which is inherently linear and only
requires a single reference gas to perform a full calibration. There is no requirement for
a reference gas during operation.

Note - No. 1

This Paracube® manual details the operation and installation of the

Analogue variants only.

A full listing of all Paracube® Micros, including the Digital variants,

can be found in Section 6.1. The manual detailing the Digital

variants can be ordered under part number 01115001A.

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2 Hummingbird Paramagnetic Measurement Principle

The sensor utilises the paramagnetic susceptibility of oxygen, a physical property
which distinguishes oxygen from most other common gases.

The sensor incorporates two nitrogen-filled glass spheres mounted on a strong, noble
metal taut-band suspension. This assembly, termed the ‘Suspension Assembly’ is
suspended in a symmetrical non-uniform magnetic field. When the surrounding gas
contains paramagnetic oxygen, the glass spheres are pushed further away from the
strongest part of the magnetic field. The strength of the torque acting on the
suspension is proportional to the oxygen content of the surrounding gases.

Fig.1

The measuring system is ‘null-balanced’. The 'zero' position of the suspension
assembly, as measured in nitrogen, is sensed by a differential photo-sensor assembly
that receives light reflected from a mirror attached to the suspension assembly. The
output from the photo-sensor is processed and then fed back to a coil wound around
the suspension assembly to achieve a ‘null balanced’ position. This feedback achieves
two objectives:

When oxygen is introduced to the cell, the torque acting upon the suspension
assembly is balanced by a restoring torque due to the feedback current in the coil. The
feedback current is directly proportional to the volume magnetic susceptibility of the
sample gas and hence, after calibration, to the partial pressure of oxygen in the
sample. A voltage output is derived which is proportional to the feedback current.

Taut Band

Permanent

Magnet

N2 filled

Spheres

Magnetic Field

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Fig.2

In addition, the electromagnetic feedback stabilises the suspension (heavily damping
oscillations) thus making it resilient to shock and vibration.

Rotation

Mirror

Light Source

Photodiodes

C

urrent M

easurement

Conductive

W

ire

Amplifier

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3 Product Specification

3.1 Performance Specification (under constant conditions)

This specification applies when the sensor has been calibrated using standard gas
values of N2 and 100% O2 using the calibration procedure described in Section 5.
Unless otherwise stated, the performance figures quoted are derived from two
standard deviation analysis. Where marked (†) testing has been conducted in
accordance with the requirements of IEC 61207-1 1994.

Operating Range
0 to 100% O2 with over range capability -15% O2 to +200% O2

Intrinsic Error†

<±0.2% O2.

Linearity†
<±0.2% O2.

Repeatability†
<±0.2% O2.

Signal Noise (peak to peak)†

<0.2% O2.

Zero Stability (permanent drift from calibration value)†

<±0.4% O2 for first 24 hours.
<±0.2% O2 for the subsequent week (additional).
<±0.2% O2 per month thereafter (additional).

Temperature Coefficient

Zero: <±0.5% O2 / 10oC.
Span: <±0.5% of O2 reading / 10oC.

Response Time in Seconds (tested under Hummingbird test conditions using a 1
micron filter).

Flow Rate

Flow Parallel

to Manifold

Gas

Concentration

250mL.min-1 18 16%-21%

250mL.min-1 20 Air-100%

500mL.min

-1

11 16%-21%

500mL.min

-1

13 Air-100%

2000mL.min

-1

11 16%-21%

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Pressure Range

±33kPag (±5psig), operating
±66kPag (±10psig), proof
±100kPag (±15psig), failure

Tilt

<±0.5% O2 equivalent for 15° change in orientation from the calibration point

Time to Valid Reading

Time to valid output (from power up when within environmental spec) <8 seconds
Time to status output (from power up when outside environmental spec) <8 seconds

Pressure Compensation

<0.8% of reading for 20kPag (±3psig), change from calibration point.

3.2 Mechanical Specification

Dimensions (W X D X H)

The sensor can be supplied with a choice of two electrical connectors which modifies
its height ‘H’ as follows:-

Low profile SMT connector

33.5mm x 30mm x 37.6mm (imperial dims. 1.32” x 1.18” x 1.48”).

Type KK friction lock connector

33.5mm x 30mm x 46.1mm (imperial dims. 1.32” x 1.18” x 1.81”).

For full outline dimensions refer to appendix 7.1 and 7.2.

Weight

70 grams (2.47 ounces).

Pneumatic Leakage

3x10-4 mbar.L.sec

-1

(~3x10-4 SCCS).

Gas Interface

Diffusion: hydrophobic 1 micron pore-size filter fitted as standard (biological filter
grades available on request).
Sealed using an ‘O’ ring (BS4518, part no. 0181-16).

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Materials in Contact with Sample Gas

Stainless steel grades 316, 316L, 302S25 and 304 (1.4301).
Borosilicate glass and alkali borosilicate glass.
Polyphenylene sulphide (PPS) with carbon / glass filler.
Polysulphone (UDEL).
Platinum and platinum iridium alloy.
Nickel.
Fluorocarbon elastomer -FPM (Viton).
Krytox GPL205 grease.
PTFE filter.
Polypropylene.

3.3 External Power Supply Specification

+5V dc ±5%, a supply supervisor inhibits operation when the PSU is below 4.75V.
Ripple and noise <0.1V Pk to Pk.
Current consumption: 5V supply rail = 70mA typical 100mA max.
A change of ±0.25V in supply Voltage results in a change of less than ±0.1% in oxygen
concentration.

3.4 Environmental Specification

Sample Gas Condition

Dry, non-corrosive, non-flammable gas, free of entrained oil, less than 3 micron
particulates, non-condensing, dew point 10°C below the sensor operating temperature.

Pressure Effect

The oxygen output will change in direct proportion to the barometric pressure unless
pressure compensation is enabled (see variant options, table 7).

Operating Temperature

5°C to 50°C (41°F to 122°F).

Storage Temperature (non-condensing conditions)

-30°C to +70°C (-22°F to 158°F).

Storage Pressure
10kPa – 200kPa (1.5psi - 30psi).

Thermal Time Constant

15 minutes. Time required for the O2 signal to reach 66% of final reading when the
sensor has been subjected to a 20°C step change in ambient temperature.

Ambient Humidity

0 to 95% RH.

Altitude Range (operating)

-500m to +5000m (-1540ft to +15400ft).

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Shock and Vibration

Meets the requirements of BS EN 60068-2-6:1996 (IEC 68-2-6), BS EN 600-2-27:1993
(IEC 68-2-27) and IEC 68-2-34. Details of these requirements are given in Appendix

7.4.

Soft Magnetic Material

A change in the reading of <0.1% O2 will occur when a soft magnetic material is
brought within 10mm of the sensor body.

Interference Effects

The paramagnetic effect of common background gases at 20oC, for 100%
concentration is shown below:

Interfering Gas

Interference Effect

(100% Interferent)

(% O2)

N2O -0.20

CO2 -0.26

H2O -0.03

Methane -0.16

CO 0.06

Helium 0.29

NO 42.56

NO

2

5.00

A comprehensive list detailing the effect of other background gases is outlined in
Appendix 7.5 or in Hummingbird Application Note HBAN PM 25 (available on request).

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4 Sensor Integration

4.1 Sensor Mounting

The sensor may be mounted using Method 1 or Method 2, if it is being mounted to an
electrically non-conductive surface and Method 3 if it is being mounted to an
electrically conductive surface, described below :-

Fig. 3

Method 1

Secure the sensor with the M2 inserts moulded into the sensor body in a triangular
arrangement using insert Nos. 1, 3 and 4 or a linear arrangement using insert Nos. 2
and 4. The insert numbers are labelled in fig. 3 above. Fixing screws should be chosen
on the basis that 3mm +/-0.5m of thread engagement is made with the inserts.
To ensure no damage occurs to the sensor or to the host equipment and to ensure that
a reliable gas tight seal is produced, observe Caution 2 and 3.

CAUTION

- No. 1

It is recommended that the sensor be mechanically mounted to an

electrically non-conductive surface. However, where installation

dictates mounting to a conductive surface, the sensor MUST be

electrically isolated from the host by means of the “Adaptor Plate”,

spares part number 01115933, see Appendix 7.3.

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Method 2

Secure the sensor using the four clearance holes located at the corner of sensor
moulding, again shown in Fig. 4. This method recommends using M2 hexagon socket
cap screws in conjunction with a “Ball ended” Allen key due to the shallow approach
that must be made by the fixing tool. To ensure that a reliable gas tight seal is
produced, observe Caution No. 3.

Fig. 4

CAUTION

– No. 3

To ensure a gas tight seal the fixing screws should be tightened to

a torque value of 0.30 to 0.35 Nm.

CAUTION

- No. 2

When using method 1 to install the Paracube® Micro it is important

to note that the maximum insertion depth for the fixing screws is

3.5mm.

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Method 3
If the sensor is being mounted to an electrically conductive surface it MUST be
electrically isolated from the host by means of the “Adaptor Plate Kit”, spares part
number 01115933. This kit must be ordered separately, but will be shipped in the same
packing as the sensor if required.

The adaptor plate is fixed to the sensor via 4 off M2 x 8mm long hex’ socket cap
screws. These screws are to be tightened in a diagonal fashion and to a torque value
of between 0.30 and 0.35Nm. Ensure the sensor’s original ‘O’ ring remains in position
before fixing the adaptor plate, see Fig 4A. For full details to fixing of the adaptor plate,
refer to Appendix 7.3.

Once the adaptor plate is properly fixed to the sensor, place the ‘O’ ring supplied with
the kit into the ‘O’ ring groove identified in Fig 4B. Secure the sensor as described in
Method 1 using the equivalent of fixing points 2 and 4 from Fig. 3 above.

Fig. 4A Fig. 4B

All three methods provide a reliable means of mounting the sensor to the host
equipment. The options are designed to accommodate a wide variety of customer
mounting requirements. Refer to Appendix 7.1 and 7.2 for positional and dimensional
details.

In order to achieve a reliable seal, both fixing methods must use the Viton® ‘O’ ring seal
supplied with the sensor (BS4518 size 0181-16). The host interface must be flat and
meet the surface roughness values of 0.8 microns as defined by standard
BS4518. If the sensor is removed from its host fixing, the ‘O’ ring must be checked for
signs of degradation or compression set. If this occurs, the ‘O’ ring must be discarded
and replaced with a new Viton® ‘O’ ring to the same specification as supplied.

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4.2 Electrical Arrangement

Power Supply (to be provided by the OEM)

The sensor requires an external power supply as specified in Section 3.3.

Electrical Connection

Connection to the sensor is made via a 4 way connector mounted onto the sensor’s
PCB. There are two connector types offered as standard, a Molex KK type friction lock
(Fig. 5) or a low profile SMT connector (Fig. 6). See Table 1 for pin out details. Full
details of the sensor variants are detailed in Section 6.1.

All electrical connections to the sensor must be made using the correct style of ‘Molex’
connector, website www.molex.com

PCB Mounted KK Friction Lock Connector - Molex Part No 0022272041, Fig. 5

2.54mm (.100") Pitch KK® Wire-to-Board Header, Vertical, with Friction Lock.
Mating crimp housing required by end-user Molex part number 0022012045 used in
conjunction with crimp terminal part number 0008500032.

Fig 5

CAUTION

– No. 4

The four screws securing the outer most PCB are factory fitted and

should not be removed or used for mounting purposes

WARNING USE

- No. 1

FAILURE TO FOLLOW THE RECOMMENDED PROCEDURE FOR FIXING OF THE

SENSOR MAY RESULT IN LEAKS EXPOSING PERSONNEL TO THE SAMPLE

GASES.

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PCB Mounted SMT Connector - Molex No 532610471, Fig. 6

1.25mm (.049") Pitch PicoBlade™ Header, Surface Mount, Right Angle.
Mating crimp housing required by end-user Molex part number 0510210400 used in
conjunction with crimp terminal part number 0500798000.

Fig. 6

P1 P2 P3 P4

+5V Analogue mV Signal Analogue 0V Earth/Ground

Table 1

Connector Details

Pins 1 and 4 (P1 and P4) shown in table 1 above are used to supply power to the
sensor, pins 2 and 3 (P2 and P3) provide the sensor’s mV output.

Earthing Arrangement

The sensor does not require an external earth connection. Electrostatic potentials are
discharged via the power supply 0V connection.

Electrical Separation

The electrical connections to the sensor should be kept to a minimum length. The
cable should be of a shielded 4-core construction; connect the electrical screen to the
equipment chassis earth star point.

4.3 Analogue Output

The analogue output is provided via the processor’s DAC and updates the reading
every 200ms +/- 5ms (5 readings every second). The analogue output is a differential
measurement between analogue 0V (Pin3) and analogue mV signal (Pin2). Do not
connect analogue 0V (Pin3) and Earth / Ground (Pin4) together as any contact
resistance will introduce offsets to the analogue signal.

The host equipment must provide an input impedance of >1MΩ

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The sensor is configured to provide a scaled analogue output in one of two voltages as
follows;

1. Scaled output of 0.5mV/%O2, equivalent to 0- 50mv for 0% to 100% oxygen –

Variants 01115704, 01115705, 01115710, 01115711 and 01115714.

2. Scaled output of 10mV/%O2, equivalent to 0- 1v for 0% to 100% – Variants

01115706, 01115707, 01115712, 01115713 and 01115715.

If the sensor is operated outside of its environmental specification the analogue output
will go to -15% O2 (-0.15 volts for the 10mV/%02 range and -7.5mV for the 0.5mV/%02
range).

If the sensor detects an electrical or sensing element malfunction or the sensor is
exposed to extreme temperatures the analogue output will go to the supply rail voltage
(+5V dc ±5%).

4.4 Location of Sensor

The sensor body should be fixed rigidly to the OEM assembly and away from vibrating
components and, in particular, care should be taken to avoid mounting the sensor onto
a chassis or plate that may act as a lever or spring. If the OEM equipment is subjected
to excessive mechanical shocks and vibration during use, it may be necessary to
mount the sensor on shock absorbers to dampen the impact to the output of the
sensor.

The sensor should be protected from sudden temperature variations, such as from
cooling fans, as this can affect the sensor’s calibration. Fitting the sensor into a
temperature controlled environment will eliminate varying environmental conditions and
optimize its performance.

4.5 How to Minimise Exposure of Pneumatic System to Contaminants

Keep the components of the pneumatic system, whether in the laboratory or in the
production assembly area, away from the ‘dirty’ operations, such as drilling, packaging,
filing, cutting, deburring and finishing.

Assemble components in a clean environment and ensure all the components in the
sample line tubing have been cleaned for oxygen service and are bagged immediately
after cleaning.

4.6 How to Handle the Sensor

Carefully remove the sensor body from the anti-static packaging and only handle the
sensor using anti-static handling procedures.

Do not remove the self-adhesive dust cover until the sensor is ready to be fitted in the
host equipment.

The sensor should be fitted into the OEM equipment under clean conditions in order to
minimise the likelihood of contaminants entering the sensor or the OEM system.

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4.7 Orientation of Sensor

To achieve optimum performance, the sensor should be operated in the orientation of
calibration. Any small offsets resulting from a change in orientation may be removed by
performing a single point offset correction.

4.8 Conditioning of the Sample

Due to the inherent protection offered by the filter at the gas exchange interface,
sample conditioning can be kept to a minimum. The sensor’s hydrophobic filter will
prevent particulates larger than 1 micron and water from entering the measurement
cavity.

It is however good practice to reduce particulate contamination of the sample gas to
less than 3 microns to prevent blockage.

Sample Temperature

Condensation within the sensor may be avoided by ensuring that the sensor
temperature is at least 10°C above the sample gas dew point.

4.9 Pressure Effects

The sensor is a partial pressure device and variations in sample gas pressure will
cause fluctuations in the observed oxygen output, proportional to the pressure change.
Under these circumstances the following methods may be employed to mitigate this
effect.

Method 1 – with Sensor’s On-board Pressure Compensation Disabled

Precise control of the sample stream pressure can be adopted by the end user. This
applies particularly to pneumatic systems where the sensor is not vented directly to
atmosphere, and where restrictions in the sample exhaust will cause the sample back
pressure to vary with sample flow, resulting in oxygen reading errors.

This method is only applicable if the sensor forms part of the sealed sample stream,
which is independent of ambient pressure swings.

Method 2 - with Sensor’s On-board Pressure Compensation Enabled

By employing the sensor’s on-board pressure compensation and by selecting the
correct variant for the application the oxygen reading is automatically corrected
internally with no further action required by the end user. For barometric pressure
compensation, select variant 01115704, 01115705, 01115706 or 01115707. For
sample pressure compensation select variant 01115710, 01115711, 0111512 or

01115713.

CAUTION

– No. 5

The sensor has exposed electronics which are at risk from

Electro-Static Discharge (ESD). Only handle the sensor in a

static safe environment.

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The accuracy of error correction achieved by pressure compensation is detailed in
Section 3.1.

Method 3 – with Sensor’s On-board Pressure Compensation Disabled

In some cases it may be desirable for the end user to perform their own pressure
compensation. During sensor calibration, the span gas value and pressure reading
should be recorded. These values may then be used to correct the oxygen signal for
changes in sample pressure (if sensor is housed in a closed sample system) or
barometric pressure (if sensor is open to ambient conditions) according to the following
formula:

Where:

% O

2

comp

: Compensated O

2

value

% O

2

ind

: Current O

2

value

P

cal

: Calibration pressure

P

ind

: Current pressure

⎥

⎦

⎤⎢ ⎣ ⎡ ×

=

ind

cal

ind

Comp

P

P

OO

2

2

%

%

CAUTION

– No. 7

If pressure compensation is toggled between its two operational

states a ‘C’ flag will appended to the output indicating a two point

calibration is required to ensure a valid oxygen reading.

CAUTION

– No. 6

Pressure compensation is factory configured to measure internal

(sample gas) or external (barometric) pressure. Selecting the right

product variant for the application is essential if compensation is to

be applied correctly. The compensation is not interchangeable.

N

ote

- No. 2

Users of variants 01115714, 01115715, 01115716 and 01115717

should refer to section 5 for guidance on how to provide their own

pressure compensation.

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4.10 Use of Sensor with Flammable / Toxic Sample Gases

The sensor may be used with flammable / toxic sample gases (for example anaesthetic
gases), but due consideration must be given to ensuring the seal has high integrity by
following the mounting guidelines in Section 4.1.

5 Operation and Calibration

Hummingbird calibrates the Paracube® Micro prior to shipment; however you are
advised to recalibrate the sensor immediately prior to use to remove any offsets that
may have occurred between shipment and installation.

Calibration of the analogue sensor is made by performing a ‘Single Point Offset
Correction’ (SPOC) and passing ambient or bottled air across the sensor’s diffusion
membrane. The sensors are pre-configured to correct the output to 20.9%.

5.1 Calibration – Initial Conditions

Provide an external power supply as described in section 3.3
Configure the sensor communication as described in section 4.3.
Provide a calibration gas containing 20.9% oxygen with a constant gas flow passing
across the diffusion interface.

5.2 Single Point Offset Correction (SPOC)

Expose the sensor to ambient or bottled air for a minimum of 30s prior to initiating the
SPOC. Initiate the SPOC by using the method described below.

During a SPOC the sensor’s internal pressure device is used to distinguish zero drift
from pressure effects. The pressure device must be exposed to the sample gas,
regardless of whether your sensor variant has pressure compensation enabled. If the
pressure device cannot measure the sample gas pressure, errors will be introduced
into subsequent readings. Fig. 7 illustrates the effects of zero drift and ambient
pressure variation.

If you are using a sensor variant that has pressure compensation disabled, oxygen
concentration values reported by the sensor are compensated relative to the factory
calibration pressure of 100kPa.

WARNING US

E -

No. 2

WHEN USING THE SENSOR WITH FLAMMABLE / TOXIC SAMPLE GASES, IT IS

THE RESPONSIBILITY OF THE ‘ORIGINAL EQUIPMENT MANUFACTURER’ TO

PERFORM APPROPRIATE TESTS TO ENSURE THAT IT MEETS THEIR

REQUIREMENTS AND THAT THE SENSOR IS INTEGRATED IN ACCORDANCE

WITH ANY REGIONAL STANDARDS OR REGULATIONS GOVERNING THE FINAL

APPLICATION.

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To correct the oxygen reading following a SPOC, you will need to measure the sample
gas pressure, and compensate using the expression for pressure compensation
detailed in method 3 of section 4.9. You should use a value of 100 for P

cal

reflecting

the factory calibration pressure of 100kPa and your measured pressure P

ind

must also

be in the same units. See caution 8.

Fig. 7

A SPOC can be initiated by depressing the on-board “Button Key-Press” located on the
sensor’s uppermost PCB.

During a SPOC the sensor’s millivolt output is driven between the full extents of the
configured range at a frequency of 1 Hz. The configured range is between -15% O2
and 200% O2, so at 10mV/%O2 output is driven between -0.15V and 2V. The oscillation
is triggered by acceptance of the button key-press and ceases following a
successful/unsuccessful SPOC.

Caution

- No. 8

If your sensor has pressure compensation disabled, oxygen readings

following a SPOC may not reflect the known gas concentration. This will

be due to changes in sample gas pressure. The SPOC procedure only

removes the drift component from the oxygen reading.

Single Point Offset Correction Explained

Sample Gas - % Oxygen

Sensor
Output –
Oxygen
Reading

Oxygen Reading with Pressure
Sensor Enabled

Oxygen Reading with Pressure

Sensor Disabled

Pressure
Effect

Zero Drift
Effect

Factory Calibration @ 100KPa

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“Button Key-Press”

Flow chart 1 below describes the events following a SPOC initiated via the ‘Button

Key-press’;

1. Press the SPOC button (Button Key-press) on the uppermost PCBA, see
fig. 8. The on-board LED will flash amber at high frequency.

2. Releasing the SPOC button prior to reaching, TBP (1 second) returns the
sensor to its original state.

3. If the SPOC button is pressed and held for longer than 1 second, the LED
flashes amber at a frequency of 2Hz and at 50% duty cycle.

4. Once the SPOC button is released the LED will flash green at a frequency
of 1Hz with a duty cycle varying between 10% and 50%. This will continue
throughout the gas diffusion time, TGD (35 seconds).

5. After reaching the gas diffusion time the sensor looks for a stable reading
termed T

SVM

and will allow up to 20 seconds for the sensor to reach a signal

variance within predefined limits.

6. If a stable signal is reached inside the T

SVM

the sensor will perform a SPOC
which is confirmed when the LED emits a constant green light. If a stable
signal is not reached inside the T

SVM

the sensor’s LED will flash amber at a

frequency of 2Hz and at 20% duty cycle indicating an unsuccessful SPOC.

7. In the case of an unsuccessful SPOC the previous calibration data will be
retained and the sensor will continue to provide an oxygen reading based
on this data. The flashing amber LED will be retained until a successful
SPOC is subsequently performed.

Fig. 8

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St a r t

Waiting For SPOC Via Button

Ke y-Pre ss

Ke y P r e sse d

Yes / No

LED Fl a sh e s A mb e r

@ Hi gh Freq uency

Ke y P r e sse d

T<>T

BP

Key n o l on ger

pressed. Res t o r e

original LED sett ing

No

Ye s

T<T

BP

LED Fl a sh e s A mb e r

@ 2Hz, 50% Dut y Cycle

Bu t t on

Ke y Pr e ss

Maintained /

Re lea sed

Maintained

LED Fl a sh e s Gr e e n

@ 1Hz, 50% Dut y Cycle Over

TGD, MV Output Is Driven

Be t w e e n Ex t e n t O f Ra n ge

Re l ea se d

Ga s Di f f u si on T i m e

T<>T

GD

T<T

GD

LED Fl a sh e s Gr e e n

@ 1Hz, 50% Dut y Cycle

Si gn a l

Variance Check

T ≤ T

SV M

& Inside

Lim it s

T<T

SV M

outside

limits

Su cc e sf u l SP OC –

Oxygen Reading
Co r r e ct e d Fo r D r i f t,
MV Output Returns

To N or mal Si gna l. LED

Em i t s Co n st a n t

GREEN Li g h t

Unsuccesfu l SPOC –
MV Output Returns

To N or mal Si gna l.

Pr evio us Cal ib ra t io n

Dat a Is Rest ored, LED

Fl a sh e s AM B ER

@ 2Hz , 20% Dut y

Cy c l e

T≤T

SV M

inside

limits

T>T

SVM

outside

limits

TBP= Tim e SPO C b u t t o n p r es s ed t o i n i t i a t e SPOC p r o c e ss
T

SVM

= Tim e s i g n a l v ar i a n c e m a xi m u m

TGD= Tim e f o r s am p l e g a s d i f f u si o n

Flow chart 1

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5.3 Zero Drift Offset Correction in the Host Equipment

To optimize measurement accuracy without employing the SPOC can be made in the
host unit’s software.

Apply a known concentration of oxygen, e.g. air (20.9% O2) to the sensor, and store in
the host system memory the difference between the sensor’s reported oxygen reading
and the known oxygen concentration. Subsequent oxygen readings may then be
corrected by removing this stored offset value.

5.4 LED sensor status

The dual colour LED located on upper circuit board provides a visible indication of the
calibration status or the sensor’s health.

1. Under normal operating conditions and with valid calibration data the LED
will emit a constant green light.

2. Following an unsuccessful SPOC, the LED will emit an amber light, flashing
at 2Hz and 20% duty cycle. This LED status will remain until a successful
SPOC is performed. During this period the sensor will use the previous valid
calibration/SPOC data to provide the sensor’s oxygen reading.

3. The sensor’s LED will flash amber at 20% duty cycle if the sensor has
completed its zero offset correction following a SPOC via the ‘Change to
physical orientation’ method, but is not subsequently returned to its normal
measurement orientation.

4. If after applying power to the sensor, it cannot initiate the micro-processor
the LED will emit a static red light indicating sensor failure.

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6 Variants, spares, packaging and warranty

6.1 Sensor Variants Options – as shipped from Hummingbird

Variant part numbers: Lists both Digital and Analogue variants (for the digital
product manual, see Pt. No 01115001A)

Product

Variant

Number

Digital
output

Analogue

Output

0.5mV/%
O2

Analogue

Output

10.0mV/%
O2

SMT

Conn.

KK

friction

lock

Conn.

Ext.

Press.

Comp.

Int.

Press.

Comp.

†01115701

Y Y ‡ ‡

01115702

Y Y Y

01115703

Y Y Y

01115704

Y Y Y

01115705

Y Y Y

01115706

Y Y Y

01115707

Y Y Y

01115714

Y Y

01115715

Y Y

01115716

Y Y

01115717

Y Y

01115751

Y Y ‡ ‡

Table 7

† The 01115701 comes pre-fitted with the adaptor plate kit 01115933.
‡ Pressure compensation is not available for the 01115701 and 01115751 variant.

6.2 Product Spares

The sensor has no serviceable parts other than the adaptor plate kit which can be
purchased as a spare as follows;

Order Adaptor Plate Kit 01115933 comprising adaptor plate 01115351, 4 off M2 x 8mm
fixing screws Hummingbird Pt. No. 211767, ‘O’ ring to BS4518 size 0181-16
Hummingbird Pt. No. 205780.

Instruction Manual Digital variants, part number 01115001A
Instruction Manual Analogue variants, part number 01115009A

6.3 Special Packaging

The sensor is manufactured in Class 10,000 clean room conditions. The sensor is fitted
into an anti-static packaging for transport, and it is recommended that the sensor is
stored in the packaging until required for production.

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6.4 Product Failure During Warranty

Hummingbird will repair or replace free of charge any sensor that fails whilst under
warranty, providing the root cause of failure is due to faulty materials, design or
manufacture. Failures due to misuse will not be considered for replacement under
warranty. Examples of failures resulting from misuse include, but are not limited to,
failures due to excessive flow or pressure and failures due to contamination or
condensate in the cell. Under these conditions Hummingbird reserves the right to
charge for replacement.

6.5 Product Failure Out of Warranty

Hummingbird will always examine sensor returns on request to determine the root
cause for a reported product failure, but accept no obligation to replace the sensor.

6.6 Maintenance and Servicing

Maintenance and servicing of the Paracube® Micro is limited to changing of the ‘O’ ring
seal and/or the adaptor plate kit.

6.7 Decontamination

The Paracube® Micro has been designed such that the gas port may be cleaned using
‘Steriwipes’ or similar as part of a regular maintenance schedule. Ensure filter
assembly is in place prior to wiping.

Note: It is important that only general purpose alcohol based cleaning agents be

applied to the external surfaces of the Paracube® Micro.

Note: Contaminated cells should be disposed of in accordance with the local

Environmental and Health & Safety regulations.
Hummingbird reserves the right to refuse to examine product returned without a
completed Decontamination Clearance Certificate.
Appropriate anti-static handling procedures should be applied and returns must be
packed in the original material to prevent damage during transport.

WARNING USE

– No. 3

ALL PARTS OF THE SENSOR INCLUDING FILTER ASSEMBLIES AND SEALS SHALL

BE DECONTAMINATED AND RETURNED WITH A DECONTAMINATION

CLEARANCE CERTIFICATE, BEFORE HUMMINGBIRD WILL EXAMINE THE

PRODUCT.

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6.8 RoHS and WEEE Directives

RoHS - The sensor has been designed to comply with the RoHS directive and contains

no hazardous components listed by this directive.

The Restriction of Certain Hazardous Substances (RoHS) Directive restricts the use of
certain toxic substances, such as lead, in printed circuit boards.

WEEE - The European Waste from Electrical and Electronic Equipment (WEEE)
Directive aims to reduce the amount of WEEE going to landfill, by requiring all
manufacturers and producers to take responsibility for what happens to the products
they sell at the end of their lives. Hummingbird will comply with this directive and
responsibly dispose of the components that are present in the build if sensors are
returned to Hummingbird for disposal.

Hummingbird will advise OEMs on how to dispose of components if requested.

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®

Micro – Instruction Manual

7 Appendices

Appendix 7.1 Outline Dimensions, KK Friction Lock Connector

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®

Micro – Instruction Manual

Appendix 7.2 Outline Dimensions, SMT Low Profile Connector

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Appendix 7.3 Procedure for Fixing of the Adaptor Plate

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Appendix 7.4 Mechanical Vibration and Shock Resistance

The sensor will meet the requirements of the following clauses of the International
Standard IEC 68-2 Basic Environmental Testing Procedures.

BS EN 60068-2-27:1993 (IEC 68-2-27) Shock

Peak acceleration: 100g (980 ms-2)
Duration: 6 ms
Pulse shape: Half sine

BS EN 60068-2-6:1996 (IEC 68-2-6) Sinusoidal Vibration

Frequency range: 10Hz to 500 Hz
Acceleration amplitude: 1g (9.8ms-2)
Type and duration of endurance: 10 sweep cycles in each axis

IEC 68-2-34 Random Vibration, Wide Band

Frequency range: 20Hz to 500Hz
Acceleration spectral density: 0.02g2Hz-1
Duration: 9 min

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Appendix 7.5 Sample Gas Cross Sensitivity Guide

The example below demonstrates how the effect of background gases may be
calculated.

Sample gas composition at 50°C

10% CO2
5% CO
5% HCCH
78% N2

Using the table below, the correct zero offset can be calculated:

CO2 -0.29 x 10-2 x 10 = -0.029
CO 0.07 x 10-2 x 5 = 0.004
HCCH -0.28 x 10-2 x 5 = 0.014
N2

0.00 x 10-2 x 78 = 0.000

Net background effect = -0.039

This offset may be removed during calibration by setting the zero point to +0.039% O2.

Zero Error / % of interfering gas

Gas Formula

χM x 10-6

20°C

x 0.01%

50°C

x 0.01%

60°C

x 0.01%

Acetaldehyde CH2CHO -22.70 -0.31 -0.34 -0.35

Acetic Acid CH3CO2H -31.50 -0.56 -0.62 -0.64

Acetone CH3COCH3 -33.70 -0.63 -0.69 -0.71

Acetylene HCCH -20.80 -0.25 -0.28 -0.29

Acrylonitrile CH2=CHCN -24.10 -0.35 -0.39 -0.40

Allyl Alcohol CH2CHCH2OH -36.70 -0.71 -0.79 -0.81

Ammonia NH3 -18.00 -0.17 -0.19 -0.20

Argon Ar -19.60 -0.22 -0.24 -0.25

Benzene C6H6 -54.84 -1.24 -1.36 -1.41

Bromine Br2 -73.50 -1.78 -1.96 -2.02
1,2 Butadiene C4H6 -35.60 -0.68 -0.75 -0.77
1,3 Butadiene C4H6 -30.60 -0.54 -0.59 -0.61

N-Butane C4H10 -50.30 -1.11 -1.22 -1.26

Iso-Butane (CH3)2CHCH2 -51.70 -1.15 -1.26 -1.30

N-Butyl Acetate CH3COOC4H9 -77.50 -1.89 -2.09 -2.15

Iso-Butylene (CH3)2CH=CH2 -44.40 -0.94 -1.03 -1.06

Carbon Dioxide CO2 -21.00 -0.26 -0.29 -0.30

Carbon Disulphide CS2 -42.20 -0.87 -0.96 -0.99

Carbon Monoxide CO -9.80 0.06 0.07 0.07

Carbon Tetrachloride CCl4 -66.60 -1.58 -1.74 -1.79

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Chlorine Cl2 -40.50 -0.82 -0.91 -0.94

Chloro-Ethanol ClCH2CH2OH -51.40 -1.14 -1.25 -1.29

Chloroform CHCl3 -59.30 -1.37 -1.51 -1.55

Cumene (CH3)2CHC6H5 -89.53 -2.24 -2.47 -2.55

Cyclohexane C6H12 -68.13 -1.62 -1.79 -1.84

Cyclopentane C5H10 -59.18 0.35 0.38 0.39

Desflurane CHF2OC2HF4 -84.40 -2.09 -2.37 -2.73

Dichloroethylene (CHCl)2 -49.20 -1.07 -1.18 -1.22

Diethyl Ether (C2H5)2O -55.10 -1.25 -1.37 -1.41

Enflurane C3H2F5ClO -80.10 -1.97 -2.17 -2.57

Ethane C2H6 -26.80 -0.43 -0.47 -0.49

Ethanol C2H5OH -33.60 -0.62 -0.69 -0.71

Ethyl Acetate CH3COOC2H5 -54.20 -1.22 -1.34 -1.39

Ethyl Chloride C2H5Cl -46.00 -0.98 -1.08 -1.12

Ethylene C2H4 -18.80 -0.20 -0.22 -0.22

Ethylene Glycol (CH2OH)2 -38.80 -0.77 -0.85 -0.88

Ethylene Oxide (CH2)2O -30.70 -0.54 -0.60 -0.61

Freon 11 CCl2F2 -52.20 -1.16 -1.28 -1.32

Freon 12 CCl3F -58.70 -1.35 -1.49 -1.53
Freon 113 CHCl2CH2Cl -66.20 -1.57 -1.73 -1.78
Freon 114 C2Cl2F4 -77.40 -1.89 -2.08 -2.15

Furan C4H4O -43.09 -0.90 -0.99 -1.02

Halothane C2HBrClF3 -78.80 -1.93 -2.13 -2.19

Helium He -1.88 0.29 0.32 0.33

N-Heptane C7H16 -85.24 -2.12 -2.33 -2.40

N-Hexane C6H14 -73.60 -1.78 -1.96 -2.02

Hydrogen H2 -3.98 0.23 0.26 0.26

Hydrogen Chloride HCl -22.60 -0.31 -0.34 -0.35

Hydrogen Sulphide H2S -25.50 -0.39 -0.43 -0.44

Isoflurane C3H2F5ClO -80.10 -1.97 -2.17 -2.24

Krypton Kr -28.80 -0.49 -0.54 -0.55

Methane CH4 -17.40 -0.16 -0.17 -0.18

Methanol CH3OH -21.40 -0.27 -0.30 -0.31

Methyl Acetate CH3COCH3 -42.60 -0.88 -0.97 -1.00

Methyl Ethyl Ketone CH3COCH2CH3 -45.50 -0.97 -1.07 -1.10

Methyl Isobutyl Ketone C4H9COCH3 -69.30 -1.66 -1.82 -1.88

Monochlorobenzene C6H5Cl -70.00 -1.68 -1.85 -1.90

Nitric Oxide NO 1461.00 42.56 42.96 42.94

Nitrogen N2 -12.00 0.00 0.00 0.00

Nitrogen Dioxide NO2 150.00 5.00 16.00 20.00

Nitrous Oxide N2O -18.90 -0.20 -0.22 -0.23

N-Octane C8H18 -96.63 -2.45 -2.70 -2.78

Oxygen O2 3449.00 100.00 100.00 100.00

Ozone O3 6.70 0.54 0.60 0.61

Iso-Pentane C5H12 -64.40 -1.51 -1.67 -1.72

Phenol C6H5OH -60.21 -1.39 -1.54 -1.58

Propane C3H8 -38.60 -0.77 -0.85 -0.87

Iso-Propanol (CH3)2CHOH -47.60 -1.03 -1.13 -1.17

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Propylene C3H6 -31.50 -0.56 -0.62 -0.64

Isopropyl Ether (CH3)4CHOCH -79.40 -1.95 -2.15 -2.21

Pyridine N(CH)5 -49.21 -1.08 -1.19 -1.22

Styrene C6H5CH=CH2 -68.20 -1.62 -1.79 -1.85

Sevoflurane CFH2OCH(CF3)2 -111.20 -2.86 -3.15 -3.25

Sulphur Dioxide SO2 -18.20 -0.18 -0.20 -0.20

Tetrachloroethylene Cl2C=CCl2 -81.60 -2.01 -2.22 -2.28

Tetrahydrofuran C4H8O -52.00 -1.16 -1.27 -1.31

Toluene C6H5CH3 -66.11 -1.56 -1.72 -1.78

Vinyl Chloride CH2=CHCl -35.60 -0.68 -0.75 -0.77

Xenon Xe -43.90 -0.92 -1.02 -1.05

Xylene (CH3)2C6H4 -77.78 -1.90 -2.09 -2.16

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Appendix 7.6 RoHS II Directive 2011/65/EU Declaration

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Revision History Sheet

Manual: 01115009A

Ref No.

Page(s)

Affected

Summary of Change Changed by Date

01115/009/0 All First issue of manual CRE March 2011

01115/009/1 Page 12

Altitude operating range was -250m,
now -500m. (ECN 11-089)

CRE May 2011

01115/009/2

10, 13-15, 30,
31, 36

Time to valid reading was <4s.

Appendix 7.3 added all subsequent
appendic es renumbered.

Section 6.2 amended to include details
to spares kit 01115933.

New Variant added 01115751, table 7
updated to reflect new part.

Method 3 added to accommodate
fixing of sensor to electrically
conductive surfaces.

CRE MC 8/12/12

01115/009/3

10, 23,24,26,
27,28 pages
renumbered
as res ult of
changes

Tolerance added to update rate.

SPOC initiated via a change to
physical orientation r emoved.

Spare filter assembly removed as a
spare

Time to valid reading was <6s, now
<8s

CRE MC 13/01/12

01115/009/4

Page 9

Reference to flow and associated
response times normal to gas interface
removed.

CRE MC 30/10/12

01115009/5 Page 9 and 11

Change Note 12-155.

For details refer to 01115009AM

GDR MC 5/12/12

01115009/6

Page 14, 15
and 33

Change Note 00184

For details refer to 01115009AM

MAH CRE 17/06/14

01115009/7 Page 11

Change Note 00325

For details refer to 01115009AM

MAH CRE 28/01/15

01115009/8 Page 11

Change Note 00348

For details refer to 01115009AM

MB MC 06/03/16

01115009/9 All Pages

General update to reflect Hummingbird
branding and technical changes.

C/N 00625

GJ

271016

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