Bio-Science CI-900 Manuel utilisateur

CI-900 Portable Ethylene Analyzer

CID Bio-Science

Portable Instruments for Precision Plant Measurement

Inc.

Operation Manual

DECLARATION OF CONFORMITY

Manufacturer:

CID Bio-Science, Inc.

1554 NE 3

Ave

Camas, WA 98607

Declares that the CE-marked Product:

Product Models (s):

Model CI-900

Complies With:

89/336/EEC Electromagnetic Compatibility Directive

73/23/EEC Low Voltage Directive

Compliance Standards:

EN 55027 RF Emissions Information

Technology Equipment

EN 50082-1 EMC Immunity Standard

EN 60950 Safety of Information

Technology Equipment

Including Electrical

Business Equipment

December 18, 2013

Leonard Felix

President

DOCUMENT OVERVIEW

Introduction...................................................................................................................................................................................... 1

Features ....................................................................................................................................................................................... 2

Specifications ............................................................................................................................................................................... 3

Theory of Operation ......................................................................................................................................................................... 5

Interfering Gases.......................................................................................................................................................................... 6

PolarCept ..................................................................................................................................................................................... 7

PolarCept: Measure ................................................................................................................................................................ 8

PolarCept: Clean...................................................................................................................................................................... 8

Unpacking the CI-900........................................................................................................................................................................ 9

CI-900 Research Kit Accessories................................................................................................................................................. 10

Operating Instructions .................................................................................................................................................................... 11

Charging the Internal Battery..................................................................................................................................................... 12

CI-900 CO2PPM Sensor and Battery Power .......................................................................................................................... 13

Measure Menu: Taking a Measurement.................................................................................................................................... 14

Sensor Stability...................................................................................................................................................................... 14

Graph Mode .......................................................................................................................................................................... 15

Monitor Mode....................................................................................................................................................................... 16

CI-900RK: Using the Research Kit Fruit Chamber .................................................................................................................. 19

GC Emulation Mode .............................................................................................................................................................. 21

Ethylene Sensor Zero Calibration............................................................................................................................................... 27

Manually Set Zero ................................................................................................................................................................. 27

Automatically Set Zero: Offset Autocorrection..................................................................................................................... 28

Setup Menu .................................................................................................................................................................................... 29

Setup Measure........................................................................................................................................................................... 29

Setup Autosave .......................................................................................................................................................................... 29

Setup Sensor .............................................................................................................................................................................. 31

Setup Calibration ....................................................................................................................................................................... 34

C2H4Calibration..................................................................................................................................................................... 34

Offset Autocorrection ........................................................................................................................................................... 35

Sensitivity Correction ............................................................................................................................................................ 37

CO2Calibration...................................................................................................................................................................... 37

O2 Calibration ........................................................................................................................................................................ 42

Setup Time and Date.................................................................................................................................................................. 43

Setup Flow ................................................................................................................................................................................. 43

Setup Chamber .......................................................................................................................................................................... 44

Setup Terminals ......................................................................................................................................................................... 48

Setup Board ............................................................................................................................................................................... 49

Setup Connection....................................................................................................................................................................... 50

View Menu...................................................................................................................................................................................... 51

View Files ................................................................................................................................................................................... 51

View Voltage.............................................................................................................................................................................. 52

View Battery .............................................................................................................................................................................. 52

Other View Menu Options ......................................................................................................................................................... 53

File Menu ........................................................................................................................................................................................ 54

Clear a File.................................................................................................................................................................................. 54

Delete a File ............................................................................................................................................................................... 55

Create a File ............................................................................................................................................................................... 55

Open File.................................................................................................................................................................................... 57

Data Transfer to a Computer ..................................................................................................................................................... 58

Data Files............................................................................................................................................................................... 59

Firmware Update............................................................................................................................................................................ 61

Cleaning and Maintenance ............................................................................................................................................................. 65

Maintaining the Electrochemical Sensor ................................................................................................................................... 65

Warnings......................................................................................................................................................................................... 67

Technical Support ........................................................................................................................................................................... 68

Customer Service ....................................................................................................................................................................... 68

Frequently Asked Questions ...................................................................................................................................................... 69

Supporting Sciences References ..................................................................................................................................................... 74

CID-BIOSCIENCE, INC. HARDWARE WARRANTY.............................................................................................................................. 76

APPENDIX I: Material Safety Data Sheet for 2N Sulfuric Acid Solution........................................................................................... 77

APPENDIX II: Procedure for CI-900 Validation Using Fruit .............................................................................................................. 82

APPENDIX III: Guidelines for Measuring Sample Bags .................................................................................................................... 84

APPENDIX IV: CI-900 Menu System Diagram .................................................................................................................................. 86

CI-900 Production Test Check Sheet............................................................................................................................................... 87

Warranty Registration Card ............................................................................................................................................................ 89

This instruction manual is written for firmware version 4.5.26

CI-900 Instruction Manual 8/10/2015

1554 NE 3rd Ave, Camas, WA 98607, USA Phone: (360) 833-8835

sales@cid-inc.com www.cid-inc.com 1

Introduction

Congratulations on the purchase of your new CI-900 Portable Ethylene Gas Analyzer. The CI-900

provides accurate real-time measurement of ethylene gas concentrations in a compact instrument

suitable for field and laboratory use. At the core of the instrument is an electrochemical sensor that

offers extraordinary sensitivity to ethylene, at levels as low as 0.04 ppm (40 ppb) in air.

Ethylene production is known to increase in response to plant stress and during fruit ripening and

maturity, and until recently, sensitive ethylene measurements were available only through

elaborate and expensive gas sampling and gas chromatography analysis. The intent of the CI-900’s

portable design is to aid the research community in developing real-world ethylene management

applications for the benefit of growers, processors, and consumers.

The CI-900 analyzes the concentration of ethylene in a gas sample for the purpose of research or

ethylene management. The CI-900 employs electro-chemical sensors as well as several other

sensors for temperature, humidity, GPS location, and optionally carbon dioxide (CO2: high and low

range) and oxygen (O2). During a sample, the subject gas travels across the surface of the electrode

and diffuses into the electrochemical cell where ethylene is oxidized. The current created by the

oxidation is measured and interpreted as the concentration of ethylene (reported in parts per

million or ppm).

We hope you enjoy using your CI-900 Portable Ethylene Gas Analyzer.

Figure 1: The CI-900 Portable Ethylene Analyzer front panel and display.

CI-900 Instruction Manual 8/10/2015

1554 NE 3rd Ave, Camas, WA 98607, USA Phone: (360) 833-8835

sales@cid-inc.com www.cid-inc.com 2

Features

High sensitivity to C2H4 (0 ppm –200 ppm)

CO2 and O2sensing capability (optional)

Compact portable form factor (2.43 kg)

Real time continuous monitoring

Internal data logging and storage (4 GB SD card included)

Automatic data logging with adjustable interval

User adjustable flow rate

Transflective display enables easy viewing in direct sunlight

Rechargeable Li-Ion battery provides 4 hours of monitoring in the field

Multiple configurations to accommodate in situ research and controlled atmosphere

monitoring

Instantaneous and accumulated measurement modes (Monitor and Graph View)

Quick connect sampling ports

Data saves in .csv (commas separated value) file

Configured for domestic and international operation: 110 VAC, 60 Hz or 230 VAC, 50 Hz

Non-destructive measurements

Mini-USB chargeable and mini-USB data download

Time-date stamped data records

External wire terminals for fixed location monitoring or control applications

GC emulation mode for small sample volumes (optional)

Figure 2: The removable SD card on the CI-900 makes data transfer quick and simple.

CI-900 Instruction Manual 8/10/2015

1554 NE 3rd Ave, Camas, WA 98607, USA Phone: (360) 833-8835

sales@cid-inc.com www.cid-inc.com 3

Specifications

CI-900 Specifications

Display

Sunlight visible transflective graphic LCD

Operating environment

0°C - 45°C (0-90% humidity non-condensing)

Battery Capacity

4 hours - Rechargeable Li-Ion (5000 mAh)

Dimensions

183.5 mm x 111 mm x 120 mm

Weight

2.43 kg

Enclosure

Anodized aluminum

Air Sampling Rate

0.2 Liters/minute

Sample Rate

Open Loop - Monitoring @ 5 sec intervals

Closed loop < 3 min

Warm-up time

<5 minutes

C2H4PPB Sensor

Electrochemical

Nominal Range

0- 2 ppm

Resolution

0.001 ppm

Lower Detection Limit

0.04 ppm (40 ppb)

Accuracy

±10 %; adjusted for temperature and humidity

Offset Recalibration

Daily

Span Recalibration

Weekly (calibration gas required)

C2H4PPM Sensor

Electrochemical

Nominal Range

0- 200 ppm

Resolution

0.1 ppm

Lower Detection Limit

0.5 ppm

Accuracy

±5 %; adjusted for temperature and humidity

Offset Recalibration

Bi-annually

Span Recalibration

Bi-annually (calibration gas required)

CI-900 Instruction Manual 8/10/2015

1554 NE 3rd Ave, Camas, WA 98607, USA Phone: (360) 833-8835

sales@cid-inc.com www.cid-inc.com 4

Optional Sensors

CO2PPM Sensor

Low-Power Non-Dispersive Infrared Gas Analyzer

Chopping Frequency

1Hz

Source Life

5000 Hours

Nominal Range

1 –2000 ppm (Standard)

0 –3000 ppm (Optional)

Zero Scale Resolution

0.1 ppm

Full Scale Resolution

1 ppm

Repeatability

±0.1 ppm (short term)

Accuracy

< ±2% up to 3000 ppm

Sample Cell

100 mm x 10.2 mm (3.94" x 0.4" diameter)

Warm-up time

<3 minutes

Weight

172.6 g

Offset Recalibration

Daily

Span Recalibration

Bi-annually (calibration gas required)

CO2Percent Sensor

Infrared Sensor, Pyroelectric detector

Nominal Range

0 –20% (200,000 ppm) (optional: 0-5%)

Full scale resolution

0.01%

Zero repeatability

±10 ppm

Full scale Repeatability

±500 ppm

Accuracy

1.5% of Full Scale

Lifetime

>5 years

Warm-up time

<3 minutes

Weight

7 g

O2 Percent Sensor

Electrochemical

Nominal Range

0-100%

Resolution

0.1%

Operating environment

0°C - 55°C (5-95% humidity non-condensing)

Weight

7 g

CI-900 Instruction Manual 8/10/2015

1554 NE 3rd Ave, Camas, WA 98607, USA Phone: (360) 833-8835

sales@cid-inc.com www.cid-inc.com 5

Theory of Operation

The ethylene sensors in the CI-900 are electrochemical. With this type of sensor, the gas sample

travels across the surface of the electrode and diffuses into the electrochemical where ethylene is

oxidized. The current created by the oxidation is measured and converted to parts per million

(ppm) of ethylene.

Figure 3: Diagram of an electrochemical sensor. A: working electrode R: reference electrode

C: counter electrode E: electrolyte. Image credit: doi:10.1093/aob/mcs259.

The CI-900 flow rate is regulated by a pump and a flow meter. Additional optional sensors are

enabled/disabled in the Setup Menu (see page 31), as well as “conditioning chambers” on the back

of the instrument (see page 44).

The temperature and relative humidity sensors are located inside the instrument. Therefore, the

temperature sensor is subject to heating by the CI-900 internal electronics. The temperature

reading is often 4-5OC above ambient and in turn, relative humidity readings are affected. The use of

water in Chamber In (PolarCept, see page 7), will also affect relative humidity readings.

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