Hummingbird Communications Paracube Micro User 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
1INTRODUCTION..............................................................................................................3
2HUMMINGBIRD PARAMAGNETIC MEASUREMENT PRINCIPLE..................................4
3PRODUCT SPECIFICATION ...........................................................................................6
3.1 PERFORMANCE SPECIFICATION (UNDER CONSTANT CONDITIONS) ........................................6
3.2 MECHANICAL SPECIFICATION ...........................................................................................7
3.3 EXTERNAL POWER SUPPLY SPECIFICATION.......................................................................8
3.4 ENVIRONMENTAL SPECIFICATION .....................................................................................8
4SENSOR 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
4.8CONDITIONING OF THE SAMPLE...................................................................................... 16
4.9 PRESSURE EFFECTS.....................................................................................................16
4.10 USE OF SENSOR WITH FLAMMABLE /TOXIC SAMPLE GASES..............................................18
5OPERATION 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
6VARIANTS, 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
7APPENDICES................................................................................................................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 N2and 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% O2to +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% O2for first 24 hours.
<±0.2% O2for the subsequent week (additional).
<±0.2% O2per month thereafter (additional).
Temperature Coefficient
Zero: <±0.5% O2/ 10oC.
Span: <±0.5% of O2reading / 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% O2equivalent 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).