PP Systems WMA-5 Manuale utente

WMA-5

CO2Gas Analyzer

Operation Manual

Version 1.01

3rd November 2016

PP Systems

110 Haverhill Road, Suite 301

Amesbury, MA 01913 U.S.A.

Tel: +1 978-834-0505 Fax: +1 978-834-0545

Email: support@ppsystems.com URL: www.ppsystems.com

WMA-5 Operation Manual V. 1.01 2 support@ppsystems.com

Contents

Welcome .......................................................................................................................................................6

User Registration ..........................................................................................................................................6

Service & Warranty.......................................................................................................................................7

Contact Information.......................................................................................................................................7

Unpacking and Storage of Your Equipment..................................................................................................7

Unpacking..............................................................................................................................................7

Technical Specification .................................................................................................................................8

Summary of System Design..........................................................................................................................9

Overview and Theory ................................................................................................................................9

Optional Sensors for use with WMA-5........................................................................................................11

O2Sensor ................................................................................................................................................11

H2O Sensor..............................................................................................................................................11

Mechanical Specifications & Mounting Instructions....................................................................................11

System Power.............................................................................................................................................11

Getting Familiar with the WMA-5 ................................................................................................................12

Touch Display..........................................................................................................................................12

Status Box............................................................................................................................................12

Gas Ports.................................................................................................................................................13

Water Trap...............................................................................................................................................13

Terminal Block.........................................................................................................................................13

Recommended Cable Interface...........................................................................................................14

USB Memory Stick Port...........................................................................................................................15

Flow Adjustment......................................................................................................................................15

Absorber Column and CO2Scrubber ......................................................................................................15

Data Port..................................................................................................................................................15

Routine System Checks..............................................................................................................................16

Touch Display Overview .............................................................................................................................16

Splash Screen.............................................................................................................................................18

General Screen Info....................................................................................................................................18

Data Entry Screen ...................................................................................................................................18

Measurement Mode ....................................................................................................................................19

Measure Screen Info...............................................................................................................................19

Measure Screen ......................................................................................................................................20

Variables 1 Screen ..................................................................................................................................21

WMA-5 Operation Manual V. 1.01 3 support@ppsystems.com

Variables 2 Screen ..................................................................................................................................22

Graph Screen ..........................................................................................................................................22

Main Menu...................................................................................................................................................23

Settings .......................................................................................................................................................24

Settings 1 Menu.......................................................................................................................................24

Zero Settings........................................................................................................................................24

Alarm Settings......................................................................................................................................26

Reset Zero Absorber............................................................................................................................27

Flow Settings .......................................................................................................................................27

Alarm Sound Settings..........................................................................................................................28

CO2Units Settings...............................................................................................................................28

Settings 2 Menu.......................................................................................................................................29

Analog Settings....................................................................................................................................29

Averaging Settings...............................................................................................................................30

WMA ID Settings..................................................................................................................................30

Graph Setting.......................................................................................................................................31

Settings 3 Menu.......................................................................................................................................31

Host Settings........................................................................................................................................32

WiFi Settings........................................................................................................................................33

Memory Settings..................................................................................................................................33

Host Port Settings................................................................................................................................34

Reset WiFi Settings .............................................................................................................................34

Settings 4 Menu.......................................................................................................................................35

Set Clock Settings................................................................................................................................35

Default Settings....................................................................................................................................36

Calibration...................................................................................................................................................36

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

O2Calibration ..........................................................................................................................................39

Connecting Reference Gas the WMA-5 ..............................................................................................40

Touch Calibration ....................................................................................................................................41

Diagnostics..................................................................................................................................................42

ADC Diagnostics .....................................................................................................................................42

Zeros Diagnostics....................................................................................................................................43

Hours Diagnostics ...................................................................................................................................44

Voltage Diagnostics.................................................................................................................................44

WMA-5 Operation Manual V. 1.01 4 support@ppsystems.com

Information Menu........................................................................................................................................45

About .......................................................................................................................................................45

Contact ....................................................................................................................................................46

Connecting WMA-5 to External Devices.....................................................................................................47

Analog Voltage Output ............................................................................................................................47

4-20 mA Analog Current Output..............................................................................................................47

Alarm Relay Outputs ...............................................................................................................................47

USB Memory Stick ..................................................................................................................................47

Digital Connection Methods.....................................................................................................................48

USB......................................................................................................................................................48

RS232..................................................................................................................................................48

Wireless ...............................................................................................................................................48

Digital Communication Protocols and Software......................................................................................49

WMA-5 Command Set.........................................................................................................................49

GAS (Gas Analysis Software) .................................................................................................................55

Communication Summary.......................................................................................................................58

Wireless Network Settings.......................................................................................................................58

Connecting To WMA-5 Via Direct Wireless Connection......................................................................59

Connecting to WMA-5 via a Local Area Network ................................................................................60

Measure Format Settings Table..................................................................................................................63

Error Messages for the WMA-5 Table ........................................................................................................66

Maintenance................................................................................................................................................68

Absorber Column and CO2Scrubber ......................................................................................................68

Soda Lime............................................................................................................................................68

Gray Foam Filters................................................................................................................................69

Absorber Filters....................................................................................................................................69

End Cap “O” Rings...............................................................................................................................69

Water Trap...............................................................................................................................................70

Hydrophobic Filter ...................................................................................................................................70

Sampling Pump.......................................................................................................................................71

Infrared Source........................................................................................................................................71

Appendix 1. WiFi Compliance....................................................................................................................72

Table C-1 Country Certifications..........................................................................................................72

Table C-2 Country Transmitter Ids ......................................................................................................73

Table C-3 Safety..................................................................................................................................73

WMA-5 Operation Manual V. 1.01 5 support@ppsystems.com

Federal Communication Commission Interference Statement............................................................73

Radiation Exposure Statement............................................................................................................74

WMA-5 Operation Manual V. 1.01 6 support@ppsystems.com

Welcome

Thank you very much for purchasing our WMA-5 CO2Gas Analyzer. We greatly appreciate your

business and we look forward to working with you and your team for many years to come.

This manual and the information contained within are copyrighted to PP Systems. No part of the

manual may be copied, stored, transmitted or reproduced in any way or by any means including,

but not limited to, photocopying, photography, magnetic or other mechanical or electronic means,

without the prior written consent of PP Systems, Inc.

For applications where failure of this equipment to function correctly would lead to consequential damage,

the equipment must be checked for correct operation and calibration at intervals appropriate to the

circumstances. The PP Systems' equipment warranty is limited to replacement of defective components,

and does not cover injury to persons or property or other consequential damage.

This manual is provided to help you install and operate the equipment. Every effort has been made to

ensure that the information it contains is accurate and complete. PP Systems does not accept any

liability for losses or damages resulting from the use of this information.

It is the operator’s responsibility to review this information prior to installation and operation of the

equipment. Otherwise, damage may be caused which is not covered under our normal warranty policy.

User Registration

It is very important that ALL new customers register themselves with us to ensure that our user’s list is

kept up-to-date. If you are a PP Systems’ user, please go to www.ppsystems.com and click on Customer

Registration in the upper left hand corner.

Only REGISTERED users will be allowed access to the protected “Users” section of our web site. This

section will contain important product information including hardware/software updates, application notes,

newsletters, etc.

Thank you in advance for your cooperation.

WMA-5 Operation Manual V. 1.01 7 support@ppsystems.com

Service & Warranty

PP Systems' equipment warranty is limited to replacement of defective components, and does not cover

injury to persons or property or other consequential damage.

The equipment is covered under warranty for one complete year, parts and labor included. This, of

course, is provided that the equipment is properly installed, operated and maintained in accordance with

written instructions (i.e. Operator's Guide).

The warranty excludes all defects in equipment caused by incorrect installation, operation or

maintenance, misuse, alteration, and/or accident.

If for some reason, a fault is covered under warranty, it is the responsibility of the customer to return the

goods to PP Systems or an authorized agent for repair or replacement of the defective part(s).

Prior to returning equipment to PP Systems for service, you must first get in contact with our Service

Manager (service@ppsystems.com) to request a case number for reference and tracking purposes.

Contact Information

PP Systems, Inc.

110 Haverhill Rd, Suite 301

Amesbury, MA 01913 USA

Tel: 978-834-0505 Fax: 978-834-0545

Sales: sales@ppsystems.com

Support: support@ppsystems.com

Service: service@ppsystems.com

URL: www.ppsystems.com

Unpacking and Storage of Your Equipment

Unpacking

It is extremely important that you check the contents of your equipment immediately upon receipt to

ensure that your order is complete and that it has arrived safely. Please refer to packing list to show all

items that are included with your order. DO NOT DISCARD ANY OF THE PACKAGING MATERIAL

UNTIL ALL OF THE ITEMS LISTED ARE ACCOUNTED FOR. WE RECOMMEND THAT YOU RETAIN

THE ORIGINAL PACKING FOR FUTURE USE. If you suspect that any of the items listed on the packing

list are not included or damaged, you must contact PP Systems or your authorized distributor

immediately.

WMA-5 Operation Manual V. 1.01 8 support@ppsystems.com

Technical Specification

Analysis Method

Non-dispersive infrared, configured as an absolute absorptiometer with

microprocessor control of linearization

Measurement

Ranges

0-1000 ppm (µmol mol-1)

0-2000 ppm (µmol mol-1)

0-5000 ppm (µmol mol-1)

0-10000 ppm (µmol mol-1)

0-20000 ppm (µmol mol-1)

0-30000 ppm (µmol mol-1)

0-50000 ppm (µmol mol-1)

0-100000 ppm (µmol mol-1)

Readings are automatically corrected for temperature and pressure.

Accuracy

< 1% of span concentration over the calibrated range but limited by the

accuracy of the calibration mixture.

Linearity

< 1% throughout the range

Stability

Auto-zero at regular intervals corrects for sample cell contamination,

source and detector ageing and changes in electronics.

Warm-up Time

Approximately 15 minutes

Sampling Rate

10 Hz. Sample data is averaged and output every 1.0 seconds.

Sampling Pump

Integral, long life 12V air sampling pump

Gas Flow Rate

200-500 cc/min (280-340 cc/min is optimal). An internal, electronic flow

sensor monitors flow rate.

Terminal Block

System power, analog, digital and current (4-20mA) outputs and sensor

inputs are available from the 22 pin terminal block

Analog Output

0-2.5V (CO2range selectable) and 4-20mA

Digital Output

RS232 and USB

Air Filter & Water Trap

An external water trap and internal hydrophobic filter are used to protect

analyzer from water.

Alarm

Visual and audible alarm/warnings. 2 relay contacts (Alarm1 and Alarm2)

CO2Control

High and low user set points

Data Storage (USB)

USB Flash Drive for data storage in multiple formats.

Display

2.7” electronic paper touch display with 264 x 176 pixel resolution

Power Requirements

12 VDC, 1.5A or

100-240 VAC, 50-60 Hz, 0.6A (AC Adapter included)

Power Consumption

Warm up: 12W (12V @ 1.0A)

Normal operation: 6W (12V @ 0.5A)

Enclosure

High impact, IP65 enclosure

Gas Connections

Two barbed fittings (inlet and exhaust) for use with 1/8” (.125”) ID tubing

Operating Temperature

0-50 oC, non-condensing. External filtration may be required in dirty

environments.

Dimensions

213 cm L x 185 cm H 114 cm W (Enclosure only)

Weight

1.5 kg

Optional Accessories

-H

O Sensor - Range: 0-Dewpoint (mb)

-O2Sensor – Range: 0-100%

-WIFi

PP Systems is a registered trademark of PP Systems, Inc.

PP Systems is continuously updating its products and reserves the right to amend product

specifications without notice. All brand names are trademarks or registered trademarks of their

respective owners.

WMA-5 Operation Manual V. 1.01 9 support@ppsystems.com

Summary of System Design

Overview and Theory

The WMA-5 is designed to function as a self-contained instrument for continuous measurement of CO2in

air. Its open-path design allows for continuous, unattended air sampling, as the pump introduces fresh

sample gas to the essential component, the IRGA (infrared gas analyzer).

The IRGA forms the core of gas analysis systems that measure CO2. Non-dispersive infra-red (NDIR)

refers to the transmission of a broad-band infra-red wavelength from the IRGA source lamps. A single

IRGA consists of four basic components:

•Infra-red source

•Sample cell of known path length and volume

•Optical interference filter

•Infra-red detector

The theory itself is quite simple – light from mid-infra-red wavelengths is produced by the source and

pulsed through a gold plated cell. The interference filter narrows the bandwidth of the IR source received

by the detector to the signature wavelength absorbed by the target gas molecule, e.g. CO2. The CO2cell

employs a unique optical filter. As the sample gas fills the cell, the target gas molecule absorbs IR

energy at the particular wavelength, and the reduction in IR energy reaching the detector is measured.

The higher the target gas concentration, the lower the infra-red signal received at the detector, as defined

by the Lambert-Beer Law of Attenuation.

CO2molecules have a discrete absorption band at 4.26 µm that has very little overlap with any other

molecule’s absorption band, so that wavelength provides good sensitivity and selectivity. The WMA-5

electronics could be considered another major component, which processes raw analog-to-digital (A/D)

information from the IRGA detector, accurately translating this information into gas concentrations.

WMA-5 Operation Manual V. 1.01 10 support@ppsystems.com

The gas sample is of course a mixture of gas molecules, and this can present problems in terms of

accurate detection of concentrations of a specific gas, such carbon dioxide. This effect, foreign gas

broadening (FGB), must be corrected to ensure accurate measurement of gas concentrations. With FGB,

the CO2gas in the IRGA cell is somewhat diluted by the increased air volume induced by water vapor.

This effect is about 0.1 µmol mol-1 CO2 mb-1 H2O. The presence of water vapor also causes an increase

in infra-red absorption, which is detected as an apparent increase in [CO2]. This is of a similar magnitude,

but opposite to the dilution effect, and the WMA-5 automatically corrects these FGB effects.

The WMA-5 IRGAs are quite stable owing to their construction, calibration and thermal environment, but

various circumstances can cause apparent changes over time. Some changes may require recalibration,

although one of the strengths of the WMA-5 is that recalibration is not a routine (annual) maintenance

task as a result of our innovative “Auto-Zero” function. Our Auto-Zero function corrects for nearly all

changes that result in calibration drifts. It minimizes effects on span (gas sensitivity), of sample cell

contamination, lamp ageing, changes in detector sensitivity, amplifier gains and reference voltages.

Measurements are ratioed to the Zero reading before IR absorbance is determined. From the

relationship between absorbance and concentration determined in the factory for each instrument, and

the current calibration factor, the sample concentration is determined.

The WMA-5 detector is optimized

for this CO2waveband (4.26 µm)

Indice

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