Rosemount OXYNOS 100 O2 Analyzer-2nd Ed. Manuals & Guides

Operation Manual

OXYNOS® 100

Microprocessor - Controlled

Oxygen - Analyzer

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

2. Edition 11/97

Catalog - No: 90 002 955

Managing The Process Better

Fisher-Rosemount GmbH & Co assumes no liability for any omissions or errors in this manual.
Any liability for direct or indirect damages, which might occur in connection with the deliv ery or the use of
this manual, is expressly e xcluded to the extend permitted by applicable law.

This instrument has left the works in good order according to safety regulations.
T o maintain this operating condition, the user must strictly follow the instructions and consider the warnings
in this manual or provided on the instrument.

Troubleshooting, component replacement and internal adjustments must be made by qualified
service personnel only.

®

The suitability test of OXYNOS
32/1992, RdSchr. d. BMU from J uly 1,1992. The OXYNOS
So the analyzer is suitable f or measuring the concentrations of oxygen according to TI Air , 13
(large furnaces order) and 17

100 (paramagnetic measurement) at “TÜV Ba yern” is reported in GMBl

®

100 was tested at a waste incinerator plant.

th

BlmSchV

th

BlmSchV (incineration).

According to the report No. “95CU054/B” about the approval of “TÜV Nord mbH”, the gas analyzer

®

OXYNOS
(large furnaces order) and 17

100 is suitable for measuring the concentrations of o xygen according to TI Air, 13th BlmSchV

th

BlmSchV (incineration).

According to the report No. “IBS/PFG-No. 41300292” about the approval of “DMT - Gesellschaft für
Forschung und Prüfung mbh, F achstelle für Sicherheit - Prüfstelle für Grubenbewetterung”, the stationary

®

gas analyzer OXYNOS
between 0 and 10 % O

100 is suitable for (paramagnetic) measuring the concentrations of oxygen

. The system control with serial interf aces as described in this operation manual

2

have not been subject to the DMT - approval.

Misprints and alterations reserved

©

1996-97 by FISHER-ROSEMOUNT GmbH & Co. (RAE)

1. Edition: 07/96

2. Edition: 11/97

Read this operation manual carefully before attempting to operate the analyzer !
For expedient handling of reports of defects , please include the model and serial number which
can be read on the instrument identity plate.
Look for the error check list please too (see Item 29. of this manual)

Fisher - Rosemount GmbH & Co.

Industriestrasse 1

D - 63594 Hasselroth

Phone + 49 60 55 / 884 - 0

Telefax + 49 60 55 / 884 - 209

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

CONTENTS

CONTENTS

INTRODUCTION E - 1

SAFETY SUMMARY S - 1

General S - 1
Gases and Gas Conditionning (Sample Handling) S - 2
Supply Voltage S - 3
Connection Cables S - 3
Electrostatic Discharge S - 4
Operating Conditions according to DMT - Approval S - 5

TECHNICAL DESCRIPTION

1. Setup 1 - 1

1.1 Front Panel 1 - 1

1.2 Rear Panel 1 - 2

1.3 Inside View 1 - 2

2. Open

3. Measuring Principle 3 - 1

3.1 Paramagnetic Measurement 3 - 1

3.2 Electrochemical Measurement 3 - 3

4. Main Features 4 - 1

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

I

CONTENTS

OPERATION

5. Preparation 5 - 1

5.1 Installation 5 - 1

5.2 Gas Conditionning (Sample Handling) 5 - 2

5.2.1 Gas Flow Rate 5 - 2

5.3 Gas Connections 5 - 3

6. Switching On 6 - 1

6.1 Battery Operation 6 - 1

6.2 Power Supply Operation 6 - 2

7. Key Functions 7 - 1

7.1 FUNCTION 7 - 2

7.2 ENTER 7 - 3

7.3 INPUT - CONTROL 7 - 5

8. Entry of System Parameters 8 - 1

8.1 Pressure Correction 8 - 2

8.2 Hold 8 - 2

8.3 Automatic Calibration 8 - 3

8.4 Tolerance Check 8 - 3

8.5 Display Off 8 - 4

8.6 Analog Signal Outputs 8 - 4

8.7 Flushing Period 8 - 6

8.8 User Code 8 - 6

8.9 Response Time (t90) 8 - 7

8.10 Offset (Begin of range) 8 - 8

8.11 End of Range Value 8 - 9

8.12 Reset 8 - 10

8.13 Program Version 8 - 11

8.14 Serial - No. 8 - 11

8.15 Copy - No. 8 - 11

8.16 Absorber 8 - 12

II

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

CONTENTS

9. Calibration 9 - 1

9.1 Manual Calibration 9 - 2

9.1.1 Zeroing 9 - 2

9.1.2 Spanning 9 - 4

9.2 Automatic Calibration Mode (Option) 9 - 7

9.2.1 Zeroing 9 - 7

9.2.2 Combined Zeroing and Spanning 9 - 9

10. Digital Outputs 10 - 1

10.1 Concentration Limits 10 - 2

10.2 Valve Control 10 - 4

10.3 Status Signals (Option) 10 - 4

11. Measurement / Switching Off 11 - 1

11.1 Measurement 11 - 1

11.2 Switching Off 11 - 2

12. Serial Interface (Option) 12 - 1

12.1 Retrofitting of Serial Interface / Status Signals 12 - 1

12.2 General 12 - 2

12.3 Start Up 12 - 4

12.3.1 RS 232 C 12 - 5

12.3.2 RS 485 12 - 5

12.3.3 Switching ON/OFF Interface Operation 12 - 6

12.3.4 Setting Interface Parameters 12 - 6

12.4 Telegram Syntax 12 - 8

12.4.1 Start Character ( “$” = Hex 24) 12 - 8

12.4.2 Terminate Character ( “CR” = Hex OD) 12 - 8

12.4.3 Instruction Code 12 - 8

12.4.4 Hyphen Character ( “;” = Hex 3B) 12 - 8

12.4.5 Status Telegram 12 - 9

12.4.6 Numerical Representations 12 - 10

12.4.7 Block Parity Check 12 - 10

12.5 Instruction Syntax 12 - 11

12.5.1 Instruction Listing 12 - 12

12.5.2 Response Telegrams 12 - 13

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

III

CONTENTS

TROUBLESHOOTING

13. Error List 13 - 1

14. Measuring Points of BKS and OXS 14 - 1

14.1 Measuring points of BKS 14 - 1

14.1.1 Supply Voltage + 6 V 14 - 1

14.1.2 Reference Voltage positive 14 - 1

14.1.3 Reference Voltage negative 14 - 2

14.1.4 Temperature Sensor 14 - 2

14.1.5 Analog Preamplifiering 14 - 2

14.1.6 Light Barrier Signal (Simulation) 14 - 3

14.2 Measuring points of OXS (electrochemical measurement) 14 - 4

14.2.1 Sensor Signal 14 - 4

15. Plug Pin Allocation of BKS and OXS 15 - 1

15.1 Plug Pin Allocation of BKS 15 - 1

15.2 Plug Pin Allocation OXS (electrochemical measurement only) 15 - 2

16. Jumper Allocation of BKS 16 - 1

17. Open

IV

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

CONTENTS

MAINTENANCE 18 - 1

20. Leak Testing 20 - 1

21. Opening of the Housing 21 - 1

22. Open

23. Check and Replacement of the electrochemical Sensors 23 - 1

23.1 Check of the Sensors 23 - 2

23.2 Replacement of the Sensors 23 - 3

23.2.1 Removal of the Sensors 23 - 3

23.2.2 Exchange of the Sensors 23 - 4

23.2.3 Reinstalling of the Sensors 23 - 5

23.2.4 Basic conditions for the electrochemical Sensor 23 - 6

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

V

CONTENTS

TECHNICAL DATA 24 - 1

24.1 Voltage Supply 24 - 4

24.1.1 Electrical Safety 24 - 4

24.1.2 Power Supply 24 - 4

SUPPLEMENT

25. Replacing the EPROM 25 - 1

26. Pin - Assignments 26 - 1

27. Connection Cable 27 - 1

28. Open

29. Failure Check List 29 - 1

INDEX R - 1

List of Figures R - 6

VI

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

Safety Summary

In this manual we hav e used the following safety symbols

to draw y our attention to strictly f ollow these instructions !

1. General

SAFETY SUMMARY

GENERAL

◆ The following general saf ety precautions must be observed during all phases of operation,
service and repair of this instrument !
Failure to comply with these precautions or with specific w arnings elsewhere in this manual
violates safety standards of design, manuf acture and intended use of this instrument !
Failure to comply with these precautions may lead to personal injury and damage to this
instrument !

◆ Fisher-Rosemount GmbH & Co. assume no liability for the customer´s failure to comply with
these requirements !

◆ Do not attempt internal service or adjustment unless other person, capable of rendering first
aid and resuscitation, is present !

◆ Because of the danger of introducing additional hazards, do not perform any unauthorized
modification to the instrument !
Return the instrument to a Fisher-Rosemount Sales and Service office for service or repair
to ensure that safety f eatures are maintained !

◆ Operating personnel must not remove instrument covers !
Component replacement and internal adjustments must be made by qualified service
personnel only !

◆ Instruments which appear damaged or defective should be made inoperative and secured
against unintended operation until they can be repaired by qualified service personnel.

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

S - 1

SAFETY SUMMARY

GENERAL / GASES AND GAS CONNECTIONS

Read this operation manual carefully before attempting to operate with the
instrument !

Do not operate the instrument in the presence of flammable gases, explosive
atmosphere or furnes without supplementary protective measures !

The installation site for the instrument has to be dry and remain above freezing
point at all times.
The instrument must be exposed neither to direct sunlight nor to strong sources
of heat. Be sure to observe the permissible ambient temperature !
For outdoor sites, we recommend to install the instrument in a protective cabinet.
At least, the instrument has to be protected against rain (e.g., shelter).

Due to the high temperatures of photometer or heated components there is a
danger of burns to the operators.

2. Gases and Gas Conditionning (Sample Handling)

Do not interchange gas inlets and gas outlets !
All gases have to be supplied to the system as conditionned gases !
When the instrument is used with corrosive gases, it is to be verified that there
are no gas components which may damage the gas path components.

The exhaust gas lines have to be mounted in a declining, descending,
pressureless and frost-free and according to the valid emission legislation !

Be sure to observe the safety regulations for the respective gases
(sample gas and test gases / span gases) and the gas bottles !

S - 2

Inflammable or explosiv e gas mixtures must not be purged into the instrument
without supplementary protective measures !

To avoid a danger to the operators by explosive, toxic or unhealthy gas
components, first purge the gas lines with ambient air or nitrogen (N2) before
cleaning or exchange parts of the gas paths.

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

SAFETY SUMMARY

SUPPLY VOLTAGE

3. Supply Voltage

◆ Verify correct polarity for 24 V DC - operation !

◆ This product is a Safety Class 1 instrument (provided with a protective earth terminal).

To prevent shock hazard, the instrument chassis and cabinet must be connected to an
electrical ground. The instrument must be connected to the AC power supply mains through
a three-conductor power cable , with the third wire firmly connected to an electrical ground
(safety ground) at the po wer outlet. If the instrument is to be energized via an external power
supply, that goes for the po wer supply too.
Any interruption of the protective (grounding) conductor or disconnection of the protectiv e
earth terminal will cause a potential shock hazard that could result in personal injury.
Deliberate disconnection is inadmissible / prohibited !

◆ Use only power supply VSE 2000 or equivalent po wer supplys to be in agreement with the
CE - conformity.

◆ In case of exchanging fuses the customer has to be certain that fuses of specified type and
rated current are used. It is prohibited to use repaired fuses or def ective fuse holders or to
short-circuit fuse carriers (fire hazard).

◆ Always disconnect power, discharge circuits and remov e external voltage sources before
troubleshooting, repair or replacement of any component !

Any work inside the instrument without switching off the power must be
performed by a specialist, who is familiar with the related danger, only !

4. Connection Cables

◆ Use only from our factory optional delivered cables or equivalent shielded cables to be in
agreement with the CE - conformity.
The customer has to guarantee, that the shield is be connected bothsided.

◆ By using of optional delivering terminal strip adapters the analyzer is not be in agreement
with the CE - conformity. In this case CE - conformity is to be declared by customer as
“manufacturer of system”.

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

S - 3

SAFETY SUMMARY

ELECTROSTATIC DISCHARGE

5. Electrostatic Discharge

The electronic parts of the analyzer can be irreparably damaged if exposed to electrostatic
discharge (ESD).

The instrument is ESD protected when the covers have been secured and safety precautions
observed. When the housing is open, the internal components are not ESD protected anymore.

Although the electronic parts are reasonably safe to handle, you should be aw are of the following
considerations:

Best ESD example is when you walk ed across a carpet and then touched an electrically grounded
metal doorknob. The tiny spark which has jumped is the result of electrostatic discharge (ESD).

You prevent ESD by doing the following:

Remove the charge from your body before opening the housing and maintain during work with
opened housing, that no electrostatic charge can be built up.

Ideally you are opening the housing and working at an ESD - protecting workstation.
Here you can wear a wrist trap.

However, if you do not have such a workstation, be sure to do the following procedure exactly:

Discharge the electric charge from your body. Do this by touching a device that is electrically
grounded (any device that has a three - prong plug is electrically grounded when it is plugged into
a power receptacle).
This should be done several times during the operation with opened housing (especially after
leaving the service site because the movement on a low conducting floors or in the air might cause
additional ESDs).

S - 4

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

SAFETY SUMMARY

OPERATING CONDITIONS ACCORDING TO DMT - APPROVAL

6. Operating Conditions according to DMT - Approval

(Chapter 6 of the supplement I to the DMT - report No. “IBS/PFG-No. 41300292” about the

®

performance test of the stationary gas analyzer OXYNOS

100.

According to the system version and measuring results included in this report, the stationary gas
analyzer O XYNOS® 100 (paramagnetic measurement) from Rosemount GmbH & Co. is suitable
for measuring the concentrations of oxygen between 0 and 10 % O2, if the features and system
version go conform with the details contained in the enclosed documents as stated in this report,
if the analysis system is operated accordingly and if the following requirements are met:

◆ When using the gas warning system, it must be ensured that the permissible variations
(admissible error limit) will not be exceeded, taking into account the systematics f ailures of
the measuring signals (as indicated in this report) and the local operating conditions.
Consider the Code of Pratice No. T032 of the Labor Association of the Chemical Industry
"Usage of stationary gas warning systems for explosion protection".

◆ Verify that the explosion protection requirements are met when using the gas warning
system.

◆ Depending on the situation, it must be verified that the preset values are low enough to allo w
the system to activate the necessary protection and emergency measures and, thus, to
prev ent an y critical situations in a minimum period of time.

◆ The operatability of the alarms and the displays of each system should be tested with clean
air and test gas after the initial operation, after each long-time interruption, and periodically .
The tightness of gas pathes should also be tested. The tests must be documented by
keeping accounts.

◆ The intervals for the periodical tests must be settled by the person being responsible f or the
system´s security and in accordance with the Code of Pratice No. T023 of the Labor
Association of the Chemical Industry "Maintenance of stationary gas warning systems for
explosion protection".

◆ The system control with serial interfaces described in this operation manual have not been
subject to this investigation.

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

S - 5

SAFETY SUMMARY

OPERATING CONDITIONS ACCORDING TO DMT - APPROVAL

◆ Sample gas condensation in oxygen analyz er (components) must be prevented by taking
the necessary steps (oxygen cell is thermostated).

◆ When the system is used with aggressive gases, it is to be verified that there are no gas
components which might damage the gas path components.

◆ Appropriate dust filters must precede the used systems.

◆ The pressure and flow values recommended by the manuf acturer should be observed. An

external monitoring of the sample gas flow through the analyzer should be provided.

◆ The results of this investigation are based on the sanalyzers using software v ersions "3.03"
and "4.00" and "4.01". A change of the software version used must be certified by the T esting
Association.

◆ It should be ensured that the system parameters for the analog output hav e been correctly
adjusted. End of range of low concentration should not be identical or low er than the begin
of range. Disregarding these versions, the measurement range should be adjusted between
0 and 10 % O2 when the systems are used for explosion protection.

◆ Read and follow the operation and maintenance manual supplied to and certified by PFG.
It is important that the temperature is kept between + 5°C and + 45 °C.

◆ The analyzer housings must be provided with a permanent type plate indicating the name
of the manufacturer , model number , serial number, and the f ollowing ref erence and date of
testing:

"IBS/PFG-Nr. 41300292"

Other designation requirements, such as these according to ElexV, are still valid. With this
type plate, the manuf acturer conforms that the features and technical data of the deliv ered
system are identical with those described in this report. Any system which is not provided
with such a type plate does not go conform with this report.

S - 6

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

SAFETY SUMMARY

OPERATING CONDITIONS ACCORDING TO DMT - APPROVAL

◆ The chapter 6 of this report must be included in the operation and maintenance manual.

◆ The manufacturer has to supply the customer with a cop y of this report, if required.

◆ A print of the report in an abridged version requires the agreement of PFG.

◆ The results included in this report may not be altered in publications produced by the

manufacturer.

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

S - 7

SAFETY SUMMARY

S - 8

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

INTRODUCTION

Introduction

The OXYNOS® 100 gas analyzer is a member of the 100 series of our gas analyzers program.
It is designed for the continuous monitoring of oxygen concentrations.

The compactness of the OXYNOS® 100 permits its use in a wide variety of applications in industry
and research. Energy conservation, occupational safety, and quality assurance are the major
areas addressed.

Some typical specific applications are:

❏ Flue gas analyses for combustion efficiency in firing systems, gas cleaning systems

and legislation compliance

❏ Analysing landfill gas for ex protection

❏ Monitoring metallurgical processes in metals refining and processing

❏ Monitoring fermentation and sewages processes in biotechnology

❏ Motor vehicle exhaust gas analyses (Internal Combustion Engine Emissions)

❏ Air quality monitoring (vehicular tunnel, gas production, personal protection)

❏ Food industry

❏ Universities and Research Institutes

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

E - 1

INTRODUCTION

The analyzers of the O XYNOS® 100 series are complete, ready - to - use, gas analyzers which
may be directly inserted into existing or planned gas lines.
Since OXYNOS® 100 is working according to the extractive measuring method an adequate
sample handling system has to be provided.

The analyzer is microprocessor controlled.

Programming available with use of optional, external solenoid valves permit fully automatic
calibration of the analyzer.

All inputs required may be activated by a host computer via an optional serial interface
(RS 232 C / 485), for networking applications.

Note:

Read this operation manual carefully before attempting to operate the analyzer !

For single - channel analyzers:
The display, entries and error messages for the second channel described
in this manual are inapplicable.

E - 2

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

SETUP

FRONT PANEL

1. Setup

The analyzer it incorporated in a 1/4 19" rack-mounting housing, 3 height units.

The optional table-top housing is fitted with a carrying strap and rubber feets additional.

1.1 Front Panel

The front panel (see Fig. A-1) includes the LED - displays and all of the analyzer operating controls.

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

1 - 1

SETUP

REAR PANEL

1.2 Rear Panel

The rear panel (Fig. A-2) includes

❏ the gas line fittings

❏ the plug for the electrical supply input

❏ the sub-miniature “D” mating socket for the analog signal outputs

❏ the sub-miniature “D” plug f or the digital outputs (concentration limits and valve control)

❏ optionally the sub-miniature “D” mating socket for the RS 232 C / 485 - interface

❏ optionally the sub-miniature “D” plug for the status signals (relay outputs)

1.3 Inside View

The inside view is shown in Fig. 1-1 a and Fig 1-1 b.

1 - 2

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

Gas line fittings

SETUP

INSIDE VIEW

Security dust filter

Heat exchanger

Inlet

to Sensor

from Sensor

PCB BKS 01

Outlet

View "X"

Heat exchanger

O2 - Sensor

Fig. 1-1a: OXYNOS® 100, Inside View with paramagnetic sensor

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

Pressure sensor
(Option)

Front panel

1 - 3

SETUP

INSIDE VIEW

Gas line fittings

channel 2 channel 1

Security dust filter

Pressure sensor
(Option)

1 - 4

Front panel

Fig. 1-1b: OXYNOS® 100, Inside view with electrochemical sensor

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

MEASURING PRINCIPLE

PARAMAGNTIC OXYGEN MEASUREMENT

3. Measuring Principle

Depending on analyzer model different measuring methods will be used.

The installed type of oxygen sensor is to identify at the channel code (see Fig. A.1).

% O2 para. = paramagnetic Sensor
% O2 chem. = electrochemical Sensor

3.1 Paramagnetic Measurement

The determination of O2 - concentration is based on the paramagnetic principle (magneto­mechanic principle).

T wo nitrogen-filled (N2 is diamagnetic) quartz spheres are arranged in a "dumbbell" configuration
and suspended free to rotate on a thin platinum ribbon in a cell.
A small mirror that reflects a light beam coming from a light source to a photodetector, is mounted
on this ribbon. A strong permanent magnet especially shaped to produce a strong highly inhomo­geneous magnetic field inside the analysis cell, is mounted outside the wall.
When oxygen molecules enter the cell, their paramagnetism will cause them to be drawn to wards
the region of greatest magnetic field strength. The O2 - molecules thus ex ert different forces which
produce a torque acting on the sphere arrangement, and the suspended “dumbbell”, along with
the mirror mounted on its suspension ribbon, will be angulary rotated away from the equilibrium
position.
The mirror then will deflect an incident light beam onto the photodetector which itself produces an
electric voltage. The electric signal is amplified and fed back to a conducting coil at the “dumbbell”,
forcing the suspended spheres back to the equilibrium position.
The current required to generate the restoring torque to return the “dumbbell” to its equilibrium
position is a direct measure of the O2 - concentration in the gas mixture.

The complete analysis cell consists of analysis chamber, permanent magnet, processing
electronics, and a temperature sensor . The sensor itself is thermostatted up to approx. 55 °C. For
warming up the measuring gas is conducted via a heat-exchanger.

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

3 - 1

MEASURING PRINCIPLE

PARAMAGNTIC OXYGEN MEASUREMENT

3 - 2

Fig. 3-1: Principle Construction of paramagnetic Analysis Cell

1 Permanent magnet
2 Platinum wire
3 Mirror
4 Quartz spheres
5 Wire loop
6 Photodetector
7 Light source
8 Amplifier
9 Display

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

MEASURING PRINCIPLE

ELECTROCHEMICAL OXYGEN MEASUREMENT

3.2 Electrochemical Measurement

The determination of O2 - concentrations is based on the principle of a galvanic cell.
The principle structure of the oxygen sensor is shown in Fig. 3-2.

Lead wire (Anode)

Lead wire (Cathode)

Anode

O - ring (8)

Plastic disc (9)
Plastic top (10)

(1)

(Lead)

(Black)

Thermistor (5)

Acid electrolyte (3)

Sponge disc (7)

Cathode

(2)

Teflon membrane (4)

(Red)

Resistor (6)

(Gold film)

Fig. 3-2: Structure of electrochemical Oxygen Sensor

The oxygen senor incorporate a lead/gold oxygen cell with a lead anode (1) and a gold cathode
(2), using a specific acid electrolyte. T o avoide moisture losses at the gold electrode a sponge sheet
is inserted on the purged side.

Oxygen molecules diffuse through a non-porous T eflon membrane (4) into the electrochemical cell
and are reduced at the gold-cathode. Water results from this reaction.
On the anode lead oxide is formed which is transferred into the electrolyte. The lead anode is
regenerated continuously and the electrode potential therefore remains unchanged for a long
time.
The rate of diffusion and so the response time (t90) of the sensor is dependent on the thickness
of the Teflon membrane.

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

3 - 3

MEASURING PRINCIPLE

ELECTROCHEMICAL OXYGEN MEASUREMENT

(Red) (Black)

Thermistor (5)

(-)

Gold-

Cathode (2)

O2 + 4 H+ + 4 e- → 2 H2O

Summary reaktion O

(11)

Resistor (6)

Electrolyte (3)

(ph 6)

+ 2 Pb → 2 PbO

2

2 Pb + 2 H2O → 2 PbO + 4 H+ + 4 e

Fig. 3-3: Reaction of galvanic cell

(+)

Lead-

Anode (1)

-

The electric current between the electrodes is propor tional to the O2 concentration in the gas
mixture to be measured. The signals are measured as terminal voltages of the resistor (6) and the
thermistor (5) for temperature compensation.

The change in output voltages (mV) of the senor (11) represents the o xygen concentration.

3 - 4

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

MAIN FEATURES

4. Main Features

◆ 1/4 19" housing, 3 HU

◆ 2 parallel measuring channels possible for electrochemical sensors

◆ 4 - digit LED - measuring value display and operators prompting via this displays for each

measuring channel

◆ The response time (t90 - time) can be adjusted separately for each measuring channel

◆ Plausibility checks

◆ Temperature compensations

◆ Analog signal outputs [0 (2) - 10 V {Option 0 (0,2) - 1 V} / 0 (4) - 20 mA], optically isolated

◆ Monitoring of two free adjustable concentration limits for each measuring channel

(max. 30 V DC / 30 mA, “Open Collector”, optically isolated)

◆ Automatic calibration using zeroing and spanning at preselected intervals

(external solenoid valv es are required for this)

◆ RS 232 C/485 serial interface for data intercommunications with external

computers (optional)

◆ Status signals as option

(Non-voltage-carrying contacts, max. 42 V / 1 A)

◆ Self - diagnostic procedures, plus maintenance and servicing support functions

◆ Operator prompting for the av oidance of operator errors

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

4 - 1

MAIN FEATURES

4 - 2

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

PREPARATION

INSTALLATION SITE

5. Preparation

Please check the packing and its contents immediately upon arrival.
If any damage or missing items are found, then we request that you notify the forwarder to
undertake a damage surve y and report the loss or damage to us immediately.

5.1 Installation

The analyzer must not operate in explosive atmosphere without supplementary protective
measures !

The installation site for the analyzer has to be dry and remain above freezing point at all times.
The analyzer must be exposed neither to direct sunlight nor to strong sources of heat.
The permissible ambient temperature are between + 5 °C and + 45 °C for paramagnetic
measurement and + 5 °C and + 40 °C for electrochemical measurement.

For outdoor installation, we recommend to install the analyzer in a protectiv e cabinet. At least, the
analyzer has to be protected against rain (e.g., shelter).

The analyzer has to be installed as near as possible to the sample point, in order to av oid low
response time caused by long sample gas lines.
In order to decrease the response time, a sample gas pump with a matching high pumping rate
may be used. Ev entually, the analyzer has to be operated in the bypass mode or b y an ov erflow
valve to prevent too high flow and too high pressure (Fig. 5-1).

Exhaust

Bypass valve

Gas sampling pump

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

Analyzer

Flow meter

Filter

Fig. 5-1: OXYNOS® 100, Bypass installation

Exhaust

5 - 1

PREPARATION

GAS CONDITIONNING (SAMPLE HANDLING)

5.2 Gas Conditionning (Sample Handling)

The conditionning of the sample gas is of greatest importance for the successful operation of any
analyzer according to extractiv e method.

Only conditionned gas has to be supplied to the analyzer !

The gas has to fullfil the following conditions:

It must be

❏ free of condensable constituents
❏ free of dust
❏ free of aggressive constituents which are not compatible with the material of the gas

paths.

❏ have temperatures and pressures which are within the specifications stated in “Technical

Data” of this manual.

Inflammable or explosive gas mixtures may not be intr oduced into the analyzer
without supplementary protective measures !

When analysing vapours, the dewpoint of the sample gas has to be at least 10 °C below the
ambient temperature in order to avoid the precipitation of condensate in the gas paths .

Suitable gas conditionning hardware may be supplied or recommended for specific analytical
problems and operating conditions.

5.2.1 Gas Flow Rate

The gas flow rate should be within the range 0.2 l/min to maxi. 1.5 l/min for electrochemical
measurement and 0.2 l/min to maxi. 1.0 l/min for paramagnetic measurement !

The gas flow rate for paramagnetic measurement is allo wed to maxi. 1 l/min. !

5 - 2

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

PREPARATION

GAS CONNECTIONS

5.3 Gas Connections

All the fittings for gas line connections are placed just on the rear panel of the analyzer and are
clearly marked:

IN = gas inlet (Fig. 5-2 and Fig. A-2, Item 1)

OUT = gas outlet (Fig. 5-2 and Fig. A-2, Item 5)

Do not interchange gas inlets and gas outlets !

The exhaust gas lines have to be mounted in a declining, pressureless and frost-free way and
according to the valid emission legislation!

Zero gas and span gas are introduced directly via the gas inlet. The test gas containers have to
be set up according to the current legislation.
Be sure to observe the safety regulations f or the respective gases !

X2 OUTPUT

INTERFACE

X1 OUTPUT

IN

Gas inlet

24 VDC

Fig. 5-2a: Gas Connections OXYNOS® 100 (paramagnetic measurement)

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

OUT

Gas outlet

5 - 3

PREPARATION

GAS CONNECTIONS

K1 K2 K1 K2

Gas inlets

IN

X1 OUTPUT

INTERFACE

OUT

Fig. 5-2b: Gas Connections OXYNOS® 100 (electrochemical measurement)

Gas outlets

5 - 4

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

SWITCHING ON

6. Switching On

Once the analyzer has been correctly assembled and installed in accordance with the general
instructions of section “5. Preparation”, the analyzer is ready for operation.

The analyzer is specified for an operating voltage of 24 V DC (+ 20 % / - 50 %).
Operation from 230 / 115 V AC requires the 24 V DC supply via VSE 2000 or equiv alent po wer
supply.

24 VDC

OUT

Fig. 6-1a: Supply Voltage OXYNOS® 100 (paramagnetic measurement)

X2 OUTPUT

24 VDC

X3 OUTPUT

MADE IN GERMANY

plug

24 V DC

plug

24 V DC

Fig. 6-1b: Supply Voltage OXYNOS® 100 (electrochemical measurement)

6.1 Battery Operation

❍ Connect battery and analyzer (Fig. 6-1, Plug 24 V DC).

Verify bef orehand that the battery voltage agrees with the allowed supply
voltage of the analyzer ! Verify correct polarity before operation !

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

6 - 1

SWITCHING ON

6.2 Power Supply Operation

❍ Connect mains line and power supply.

Verify beforehand that the line voltage stated on the power suppl y agrees
with that of your power supply line !

❍ Connect power supply and analyzer (Fig. 6-1, Plug 24 V DC).

Verify correct polarity bef ore operation !

The presence of the supply voltage will be indicated by the illumination of the LED displa ys.
Upon connection of the supply voltage, the analyzer will perform a self - diagnostic test routine.
First the actual program version will be shown.

Finally either concentration values or error messages will be displayed

If as a result of a battery fault the default values were charged, this will be shown by a flushing “batt.”
This message will disappear after depressing any key.

Analyzer warming-up takes about 50 minutes for paramagnetic measurement
and about 10 minutes for electrochemical measurement !

Before starting an analysis, however, the f ollowing should be performed:

❏ entry of the desired system parameters,
❏ calibration of the analyzer.

NOTE:
The "X’s" shown in the display indicate a number or combinations of numbers.

6 - 2

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

KEY FUNCTIONS

7. Key Functions

The operation and programming of the analyzer is perf ormed using the membrane - type keypad
with its four ke ys (see Fig. A-1, Item 3 - 6).

Operator guidance prompts will appear on the 4 - digit LED - displays.

Battery - buffering of the stored parameters prevents their loss in the absense of a po wer supply
failure.

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

7 - 1

KEY FUNCTIONS

FUNCTION

7.1 FUNCTION

Depressing this key (Fig. A-1, Item 3) addresses the individual analyzer functions in sequence.
Merely addressing an analyzer function will not initiate an analyzer action or operation. The
analyzer will continue to perform analysis throughout keypad entry procedures.

The following analyz er functions and their sequences (see also Fig. 7-1) are shown:

Zeroing channel 1

Zeroing channel 2

Spanning channel 1

Spanning channel 2

Interval Time for automatic Zeroing

Interval Time for automatic Spanning

Entry of concentration limits

Only in combination of digital
outputs and external solenoid

valves, and if Auto = 1

7 - 2

Entry of system parameters.

Entry of serial interface parameters

Only with Option RS 232 C/485 Serial
Interface

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

KEY FUNCTIONS

ENTER

7.2 ENTER

The ENTER - key (Fig. A-1, Item 4) is used for the transfer of (ke yed - in) numerical data to the
corresponding operating parameters and for the initiation of certain operations, such as zeroing
and spanning.

Depressing within the function sequences (following the sequences from "Zeroing (0 - 1)" to the
"interface - parameter (SIP.) using the FUNCTION - key) the first time only the ENTER - key

will appear on the display.

This indicates that - for safety - a pass word (user code) must be entered in order to enable the entry
level.

If an incorrect password is entered, the CODE displa y will remain, and the entry displayed will be
reset to the value “0”.

When the correct password has been entered, a transfer to the protected entry level will be
effected.

This password has been set to the v alue “1” in our plant before shipment.

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

7 - 3

KEY FUNCTIONS

KEY FUNCTION OVERVIEW

7 - 4

Fig. 7-1: OXYNOS® 100 Operating Function Matrix

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

KEY FUNCTIONS

INPUT - CONTROL

7.3 INPUT - CONTROL

This keys (Fig. A-1, Item 5 and 6) are used for the adjustment of the individual entry parameter
values. Momentary depressions of either key will alter current values by +/- 1.

UP increase current value by 1

DOWN decrease current value by 1

If either of these keys is held depressed, the v alue will be altered continuously . Altering rate starts
with the slower rate, and shifts automatically to the f aster rate. When the minimal v alue is reached,
the analyzer will automatically revert to the slower rate in order to f acilitate entry of the minimal
value .

Each of the entry parameters is assigned an accepted tolerance range which must be observed
when entering parameter values. In addition, all entries are subjected to a plausibility check as
added protection against operator errors.

If within about 60 - 120 seconds no further keys have been depressed,
the analyzer will automatically revert to the “analysis display”.

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

7 - 5

KEY FUNCTIONS

7 - 6

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

ENTRY OF SYSTEM PARAMETERS

8 . Entry of System Parameters

Depress the key

until the text appears.

Depress the key

If the Code had not already been entered, there

will appear

Use the keys to select the Code

and then using

The display will now show:

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

8 - 1

ENTRY OF SYSTEM PARAMETERS

PRESSURE CORRECTION / HOLD

8.1 Pressure Correction

T o eliminate faulty measurements due to changes in barometric pressure or sample gas pressure,
the operator is offered the opportunity to enter the current pressure expressed in hPa (mbar) in a
range of 800 to 1300 hPa. The concentration values computed by the analyzer will then be
corrected to reflect the barometric pressure or sample gas pressure resp. entry .

The entry is effected using

and

It is possible to integrate a pressure sensor with a range of 800 - 1100 hP a.
The concentration values computed by the analyzer will then be corrected to reflect the
barometric pressure to eliminate faulty measurements due to changes in barometric
pressure (see technical data). .
In this case it is not possible to enter pressure value manually. In attempting to enter
pressure value manually , the analyzer will automatically rev ert to the display of measured
pressure value.

8.2 Hold

The analyzer function HOLD permits keeping the analog signal outputs and the concentration
limits locked at the last values measured during a calibration procedure.

Entry of 0: The outputs remain unlocked.
Entry of 1: The outputs will be locked.

Use the keys

and for the entry .

8 - 2

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

ENTRY OF SYSTEM PARAMETERS

AUTOMATIC CALIBRATION / TOLERANCE CHECK

8.3 Automatic Calibration

For operation with optional, external solenoid valves it can be selected, if there is a time - controlled
(automatic) calibration possible or not (in combination with digital outputs).

Entry of 0: Time - controlled calibration is not possible
Entry of 1: Time - controlled calibration is possible

Use the keys

and for the entry .

8.4 Tolerance Check

The tolerance function is for the activation and deactivation of the tolerance check procedure for
various calibration gases.

If the tolerance check procedure has been activated, the microprocessor will verify during
calibration procedures whether the used calibration gas shows a deviation of more than 10 %
from measuring range of zero (zero - level) or more than 10 % of the nominal concentration value
entered resp. (span).

If this tolerance is exceeded, no calibration will be performed, and an error message will
appear (see Section 13).

Entry of 0: Tolerance check is deactivated.
Entry of 1: Tolerance check is activated.

Perf orm the entry using

and

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

8 - 3

ENTRY OF SYSTEM PARAMETERS

DISPLAY OFF / ANALOG SIGNAL OUTPUTS

8.5 Display Off

If 1 is entered, the DISPLA Y will be deactivated about 1 to 2 minutes after the last ke y depression.
If any key is depressed while the DISPLAY is deactivated, all display elements will be reactiv ated
without any further operation being initiated.

Entry of 0: Display is activated
Entry of 1: Display is deactivated

Entry is performed using

followed by

8.6 Analog Signal Outputs

The analog signal outputs (optically isolated) are brought out to the 9 - pin sub - miniature
D- connector X2 on the analyzer rear panel.

Entry of 0: Output signal of 0 - 10 V (Option: 0 - 1 V) / 0 - 20 mA.
Entry of 1: Output signal of 2 - 10 V (Option: 0.2 - 1 V) / 4 - 20 mA. (life ze ro mode)

Use the keys

and for entry.

Note:

The begin of range concentration (OFS.) and the end of range concentration (END) are free
programmable (see Item 8.10 and 8.11).
For type of voltage output (standard or option) look at order confirmation or identify plate resp .,
please.

8 - 4

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

ENTRY OF SYSTEM PARAMETERS

ANALOG SIGNAL OUTPUTS

Mating socket X 2

Fig. 8-1a: Mating socket X 2 (analog signal outputs) [OXYNOS® 100 with paramagnetic measurement)

Mating socket X 2

24 VDC

X2 OUTPUT

X2 OUTPUT

INTERFACE

X1 OUTPUT

IN

X3 OUTPUT

24 VDC

MADE IN GERMANY

Fig. 8-1b: Mating socket X 2 (analog signal outputs) [OXYNOS® 100 with electrochemical measurement)

5

1

6

9

1
2 0 (2) - 10 V DC [Option: 0 (0,2) - 1 V DC], Kanal 1
3 0 (4) - 20 mA, Kanal 1 (R
4 0 (2) - 10 V DC [Option: 0 (0,2) - 1 V DC], Kanal 2
5 0 (4) - 20 mA, Kanal 2 (R
6
7
8
9

⊥⊥

⊥ (V DC)

⊥⊥

⊥⊥

⊥ (mA)

⊥⊥

≤ 500 Ω)

B

≤ 500 Ω)

B

Fig. 8-2: Pin assignments X 2 (analog signal outputs)

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

8 - 5

ENTRY OF SYSTEM PARAMETERS

FLUSHING PERIOD / USER CODE

8.7 Flushing Period

For calibration, the gas paths must be supplied with sufficient calibration gas . The flushing period
has to be fixed adequate; perform calibration only after a suitable flushing period (the calibration
gas flow should be identical with sample gas flow).

This period may be selected in the range 0 - 99 sec. depending on calibration conditions.

Use the keys

and for entry .

8.8 User Code

The value 1 has been set in our plant.

To prevent parameter alterations by unauthorized persons, the operator may specify another
password (user code).

Use the keys

and for entry.

Please take care for filing the user code.

8 - 6

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

ENTRY OF SYSTEM PARAMETERS

RESPONSE TIME (T90)

8.9 Response Time (t90)

For some types of analysis an alteration of the analyzer damping factor , i.e. its electrical response
time, t90, may be required. The operator is offered the option of selecting a response time optimal
for each application.

The range of accepted entries is 2 - 60 sec..

Use the keys

and for the entry.

Entry possibility for channel 2

Use the keys

and for the entry.

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

8 - 7

ENTRY OF SYSTEM PARAMETERS

OFFSET (BEGIN OF RANGE)

8.10 Offset (Begin of range)

The operator is here offered the opportunity to introduce a scale offset for the analog signal output
(begin of range).

Example:

For an analyzer concentration range of 0 - 25 % it is desired to measure only concentr ations in
the range 10 - 25 %. If the operator enters here the value 10 %, the analog signal outputs of
0 V / 0 mA or 2 (0.2) V / 4 mA will then correspond to a gas concentration of 10 %.
The displayed values are not affected.

Effect the entry using

and

Entry possibility for channel 2

Use the keys

and for the entry.

Note:
The specifications of the analyzer written in the data sheet are only for OFS. = 0 and
END = full - scale range set in our factory !

It is part of customer to enter logical values for OFS. and END !

8 - 8

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

ENTRY OF SYSTEM PARAMETERS

END OF RANGE VALUE

8.11 End of Range Value

The operator is here offered the opportunity to introduce a full - scale range for the analog signal
output.

Example:

For an analyzer concentr ation range of 0 - 25 % it is desired to measure only concentr ations in
the range 0 - 15 %. If the operator enters here the value 15 %, the analog signal outputs of
10 (1) V / 20 mA will then correspond to a gas concentr ation of 15 %.
The displayed values are not affected.

Use the keys

and for the entry.

Entry possibility for channel 2

Use the keys

and for the entry.

Note:
The specifications of the analyzer written in the data sheet are only for OFS. = 0 and
END = full - scale range set in our factory !

It is part of customer to enter logical values for OFS. and END !

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

8 - 9

ENTRY OF SYSTEM PARAMETERS

RESET

8.12 Reset

The reset operation restores the settings of the analyzer to the parameters and calibration f actors
set in our factory at the time of its manufacture .

This is equivalent to switching off the electrical supply line and s witching off the battery buffering
of the RAM’s b y remo ving the battery jumper, J7.

All parameters and calibration factors entered by the user will be lost whenever a reset
operation is performed.

The currently valid user identification code must be entered before a reset will be e x ecuted; this
will prevent inadvertent resets.

Entry is performed using

followed by

Whenever a reset operation is initiated, the analyz er operating program will be restarted, just as
it is when the instrument is first switched on (see Section 6).

Jumper J6, which activ ates the watc hdog circuitry must be inserted if the
reset operation is to be correctly executed.

8 - 10

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

ENTRY OF SYSTEM PARAMETERS

8.13 Program Version

The Program Version (No. of the installed software - version) will be displayed.

Depress the key

8.14 Serial - No.

The Serial - No. will be displayed. (Please note this number for further contact with our factory­maintenace, service, etc.)

Depress the key

Continuation of Serial - No.

Depress the key

8.15 Copy - No.

The EPROM Cop y - No. will be displayed.

Depress the key

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

8 - 11

ENTRY OF SYSTEM PARAMETERS

ABSORBER

8.16 Absorber

This display will be shown onl y with “solenoid valve option”, if AUTO = 1.

For this parameter the entry is set to “0”.

Entry is performed using

followed by

Depress the key until

the displays show

The analyzer now is back in the analysis mode .

8 - 12

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

CALIBRATION

9. Calibration

T o insure correct measurement results, zeroing and spanning should be carried out once a week.
Spanning can be performed only after zeroing before .

For the calibration procedure the required test gases hav e to be f ed to the analyz er through the
respective test gas inlets (cf . section 5.3) with a no - back - pressure gas flow rate of about
1 l/min (the same as with sample gas) !

After switching on the analyzer, wait at least approx. 50 minutes for paramagnetic
measurement or approx. 10 minutes for electrochemical measurement before admit
gas to the analyzer !
The gas flow rate for analyz ers with paramagnetic o xygen measurement is aloo wed
to max. 1.0 l/min. !

Note !

For operation with optional, e xternal solenoid valves the solenoid v alves are activ ated automati­cally by the respective function (via digital outputs).
If the analyzer is in “calibration mode”, a digital status signal “calibration” can given optional (see
Item 10.3).

Zeroing

For zeroing, the analyz er has to be flushed with nitrogen (N2) or adequate zerogas.

Spanning

The span gas concentration should be in a range of 80 % - 110 % of full - scale range !
For low er span gas concentrations the measuring accuracy could be lo wer for sample
gas concentrations, which are higher than the span gas concentration !
Spanning can be done using ambient air as span gas, if the o xygen concentration is
known and constant.

If there is no built-in pressure sensor , the correct pressure m ust be entered
before performing the calibration, if you want to have the possibility of
pressure correction (see 8.1) !

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

9 - 1

CALIBRATION

MANUAL ZEROING

9.1 Manual Calibration

9.1.1 Zer oing

Zeroing will set the actually measured gas concentration to “z ero”.

Depress the key

until the display shows (Zeroing channel 1) or

(Zeroing channel 2) resp.

Depress the key

There will appear

Use the keys to select the correct user - code

and enter using.

The displays will now show or resp.

The actual zero - lev el will be displayed.

Wait at least the entered flushing - period and t

9 - 2

- time.

90

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

CALIBRATION

MANUAL ZEROING

Depress the key

The nominal value or will be displayed.

If the actual and nominal zero - levels agree, the next function can then be selected using the
FUNCTION - key (without zeroing).

If the two values disagree, then

depress the key

The actual measuring value or will be displayed

To start zeroing press again.

As soon as zeroing has finished, the display indicates

the actual measuring value or resp. will be displayed.

The keyboard will only be released after another flushing - period and t

- time.

90

The analog signal outputs and the concentration limits are released too, if Hold = 1.

To leave “calibr ation mode” press

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

9 - 3

CALIBRATION

MANUAL SPANNING

9.1.2 Spanning

Verification of the span calibration is essential for accurate concentration measurement.

Spanning can be performed only after zeroing before .

Spanning will set the actually measured gas concentration to the entered “span gas setpoint”.

Note: The span gas concentration should be in a range of 80 % - 110 % of full - scale r ange!

For low er span gas concentrations the measuring accuracy could be lo wer for sample
gas concentrations, which are higher than the span gas concentration !
Spanning can be done using ambient air as span gas, if the oxygen concentration
is known and constant.

If there is no built-in pressure sensor , the correct pressure m ust be entered
before performing the calibration, if you want to have the possibility of
pressure correction (see 8.1) !

9 - 4

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

CALIBRATION

MANUAL SPANNING

Depress the key

until the display shows (Spanning channel 1) or

(Spanning channel 2) resp.

Depress the key

Enter the correct user code, if not already entered

The displays will now show or resp.

The actual concentration - level will be displayed.

Wait at least the entered flushing - period and t

- time.

90

Depress the key

The test gas setpoint or resp. will be displayed.

If necessary , enter the true test gas setpoint value (taken from the manuf acturer’s certification on
the gas bottle)

using the key

and using.

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

9 - 5

CALIBRATION

MANUAL SPANNING

The actual measuring value or resp. will be displayed

Leave calibration mode b y pressing the FUNCTION - ke y (enter of nominal value without span
calibration)

or press again to start spanning .

As soon as spanning has finished, the display indicates

the actual measuring value or resp. will be displayed.

The keyboard will only be released after another flushing - period and t

- time.

90

The analog signal outputs and the concentration limits are released too, if Hold = 1.

To leave calibration mode press

9 - 6

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

CALIBRATION

AUTOMATIC ZEROING (OPTION)

9.2 A utomatic Calibration Mode (Option)

A time-controlled calibration only can be done with separate external solenoid valv es via digital
outputs. The automatic function of the analyz er must also be activated correctly (cf . Section 8.3).

With this function, the analyzer can perform an automatic calibration at preset time intervals.
The displays of the analyzer shows additional the functions t - A O and t - AS using the FUNCTION

- key.

Note !

For a time-controlled calibration procedure, the test gases m ust be fed through “solenoid valv es”
controlled by the analyzer in order to ensure the supply of test gases in due course .

If the test gas concentration has changed, the correct setpoint is to enter first (see 9.1.2 ).

9.2.1 Zeroing

Depress the key

until the displays show

Depress the key

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

9 - 7

CALIBRATION

AUTOMATIC ZEROING (OPTION)

If the correct user code has not yet been entered,

the displays shows

Use the keys to select the correct user - code

and enter using.

It appears

You can enter a time interval (hours), when an automatic zeroing has to be performed.

Point of reference is the real time of entry.

Range of accepted entries: 0 - 399 (hours)

Note !
If the entry is “0” (zero), the time - contr olled calibration is switc hed off.

Entry is performed using

followed by

After entry of interval, zeroing will be done automatically at the end of the entered time interval.

9 - 8

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

AUTOMATIC ZEROING AND SPANNING (OPTION)

9.2.2 Combined Zer oing and Spanning

With this function a span calibration will be performed after completion of zeroing.

Depress the key

until the message appears

CALIBRATION

Depress the key

Enter the correct user code, if not already entered

The displays will now show

You can enter a time interval (hours), when a automatic zeroing and after that a spanning has to
be performed.

Point of reference is the real time of entry.

Range of accepted entries: 0 - 399 (hours)

Note !
If the entry is “0” (zero), the time - contr olled calibration is switc hed off.

Entry is performed using

followed by

After entry of interval, calibration will be done automatically at the end of the entered time interval.

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

9 - 9

CALIBRATION

9 - 10

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

DIGITAL OUTPUTS

OUT

10. Digital Outputs

All analyzer standard digital outputs are brought out to plug X 3 on the rear panel.
The loading of the outputs (“Open Collector”) is max. 30 V DC / 30 mA.

Plug X 3

X3 OUTPUT

MADE IN GERMANY

Fig. 10-1a: Plug X 3 (Digital Outputs) [OXYNOS® 100 with paramagnetic measurement]

X2 OUTPUT

X3 OUTPUT

Plug X 3

24 VDC

MADE IN GERMANY

Fig. 10-1b: Plug X 3 (Digital Outputs) [OXYNOS® 100 with electrochemical measurement]

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

6 9

5

1 Limits channel 2 max.
2 Limits channel 2 min.
3 Limits channel 1 max.
4 Limits channel 1 min.
5
6 Valve control span gas 2
7 Valve control span gas 1
8 Valve control zero gas
9 Valve control sample gas

⊥⊥

⊥

⊥⊥

1

Fig. 10-2: Pin - Assignments X 3 (Digital Outputs)

10 - 1

DIGITAL OUTPUTS

CONCENTRATION LIMITS

10.1 Concentration Limits

It may be assigned one upper and one lower concentration limit for each channel, freely selectable
by the operator within the available concentration range.
The rightmost decimal of the related display will start to blink whenever a limiting concentration
value is reached.
Additional digital signal outputs for the concentration limits are brought out to plug X 3 on the rear
panel.(“Open Collector”, max. 30 V DC / 30 mA).

Depress the key until the text

appears.

Depress the key

If the correct user code has not yet been entered,

the message will appear.

Depress the keys to select the correct user code,

enter with the key.

The displays will now show lower limit channel 1

Use the keys to set the limiting value.

Depress the key to enter the value.

10 - 2

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

DIGITAL OUTPUTS

LIMIT VALUES

There will then appear upper limit channel 1

Use the keys to set the limiting value.

Depress the key to enter the value.

The displays will now show lower limit channel 2

Use the keys to set the limiting value.

Depress the key to enter the value.

There will then appear upper limit channel 2

Use the keys to set the limiting value.

Depress the key to enter the value.

Depress the key until

the displays show

The analyzer is now bac k in the analysis displa y.

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

10 - 3

DIGITAL OUTPUTS

VALVE CONTROL / STATUS SIGNALS (OPTION)

10.2 Valve Control

The valve control f or operation with optional external solenoid valv es will be done via plug X 3 on
the rear panel, too (see Fig. 10-1 and 10-2).

10.3 Status Signals (Option)

The analyzer has been optionally equipped with two status signal outputs. These are fed to the
9-pin subminiature D-plug X 1 on the rear panel of the analyzer (see Item 9. and 13., too).
These signals are non-voltage-carrying contacts with a maximal loading of 42 V / 1 A !.

Plug X 1

X2 OUTPUT

INTERFACE

X1 OUTPUT

Plug X 1

IN

Fig. 10-3a: Plug X 1 (Status Signals) [OXYNOS® 100 with paramagnetic measurement]

K1 K2 K1 K2

IN

X1 OUTPUT

OUT

Fig. 10-3b: Plug X 1 (Status Signals) [OXYNOS® 100 with electrochemical measurement]

10 - 4

1

5

9

6

1 OK (open) / Failure (closed)
2 OK (closed) / Failure (open)
3 Measure (open) / Calibration (closed)
4 Measure (closed) / Calibration (open)
5 not used (closed)
6 OK / Failure (Common)
7 Measure / Calibration (Common)
8 not used (Common)
9 not used (open)

Fig. 10-4: Pin - Assignments X 1 (Status Signals)

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

MEASUREMENT/SWITCHING OFF

MEASUREMENT

11. Measurement / Switching Off

11.1 Measurement

The primary step in the measurement of the concentration of a gas component is the admission
of sample gas to the analyzer.

Analyzer warm-up after switching on takes about 50 minutes f or paramagnetic
measurement or about 10 minutes for electrochemical measurement !

❍ Admit sample gas at the gas inlet fitting.

❍ Set the gas flow rate to maxi. 1 l/min.

The analyzer must be in the “analysis mode”, i. e. the displa ys must show

Note !

If some other mode has been selected, the analyzer will automatically return to the analysis display
when a period of 60 - 120 seconds has elapsed after the last key actuation or after the last
completion of an operation !
The analyzer will remain at analysis display, until some other mode has been selected.

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

11 - 1

MEASUREMENT/SWITCHING OFF

SWITCHING OFF

11.2 Switching Off

Before s witching off the analyzer, we recommend first flushing the gas lines for about 5 minutes
with zeroing gas (N2) or adequate conditionned air. The full procedure for shutting down the
analyzer is as follows:

❍ Admit zeroing gas at the gas inlet fitting.

❍ Set the gas flow rate to allow a ble rate.

After 5 minutes have elapsed:

❍ Shut Off the zeroing gas supply.

❍ Switch Off the analyzer by disconnecting the voltage supply.

❍ Close all gas line fittings immediately.

11 - 2

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

12. Serial Interface (Option)

123456

123456

12

12

12

12

12

12

123456

123456

12.1 Retrofitting of Serial Interface / Status Signals

(status signals only: PCB BSI 10, Catalog - No.: 43 001 590,
RS 232 - Interface: PCB BSI 10 with PCB SIF 232, Catalog - No .: CH 000 069
RS 485 - Interface: PCB BSI 10 with PCB SIF 485, Catalog - No .: CH 000 070,

see Item 12.3.2, too)

Be sure to observe the safety measures !

SERIAL INTERFACE (OPTION)

RETROFITTING

❍ Opening the housing (see 21.)

❍ Connect circuit board to the threated bolts at the rear panel and mounting with the

washers and the screws.

❍ Connect cable subject to code pin to BKS - pin connector J9 .

Rear panel

Threated bolt

Rear panel

PCB BSI 10

J 9

J 9

Code pin

1

Fig. 12-1: Installation of PCB BSI 10

❍ For retrofitting serial interface insert enclosed EPROM (see Item 25.).

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

12 - 1

SERIAL INTERFACE (OPTION)

GENERAL

12.2 General

The analyzer is equipped with a serial interface enabling communications with a host computer .
The host computer can call up, prescribe, or alter parameters, as well as initiate analyzer
operations, using standardized protocols. The optional BSI 10 plug in circuit board constitutes the
hardware interface. This may be configured as RS 232 C or RS 485 interface. The RS 485 interface
permits networking several analyzers. Each analyzer may then be addressed using an assign­ment numerical ID - code.

Communications are always initiated b y the host computer; i.e ., analyzer beha ve passiv ely until
the host computer requests information from them or demands commencement of an action.

Communications use so - called “telegrams” being exchanged between the host computer and
the analyzer(s). Syntax for these telegrams is established in protocols.

T elegrams alwa ys commence with the "$" start character, immediately follow ed by a three - digit
instruction code.

Subsequent elements of telegrams are segregated by the ";" h yphen c haracter .

The final element of all telegrams transmitted must be the “CR” termination character.

Upon receipt of the terminate character, the analyzer attempts to e valuate the current contents
of its input buffer as a valid telegram. If the syntax of the transmitted telegram is correct, the
analyzer will transmit a response telegram to the host computer. This consists of the start
character, an instruction code, requested data, a bloc k - parity byte, and the termination character.

If the syntax of the transmitted telegram was not correct, the analyzer will transmit a status telegram
containing an error message to the host computer. Each ter minate character reception thus
initiates an analyzer response.

12 - 2

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

SERIAL INTERFACE (OPTION)

GENERAL

T o avoid detecting transmission errors, the host computer can insert a message -length parity byte
immediately preceding the terminate character for verification by the analyzer.

The analyzer invariab ly transmits message - length parity bytes immediately preceding termina­tion characters.

The elapsed time between the reception of star t characters and termination characters is not
limited by the analyzer; i.e ., there are no “time - out” periods.

If the host computer transmits any new characters before the analyzer has responded to the
preceding telegram, the analyzer’s input buffer will reject them; i.e., these characters will be
ignored by the analyzer.

The transmission rate may be set between 600 and 4.800 baud.
An echo - mode may also be activ ated.

The analyzer software is configured such as that telegrams ma y be sent to the host computer at
time intervals of 150 ms and greater.

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

12 - 3

SERIAL INTERFACE (OPTION)

START UP

12.3 Start Up

The analyzer has been set in our factory to RS 232 C or RS 485 interface via the plugged PCB
SIF 232 or SIF 485 on the PCB BSI 10.
The parameter 232c has also been set to 0 = NO or 1 = YES in the SIP (Serial Interface Parameters)
line.

Interconnection to the interface is via the 9 - pin sock et „Interface“ on the analyzer rear panel
(Fig. 12-2).

X2 OUTPUT

Socket

“Interface”

24 VDC

INTERFACE

X1 OUTPUT

IN

Fig. 12-2a: Socket “Interface” (Serial Interface) [OXYNOS® 100 with paramagnetic measurement]

INTERFACE

Socket

“Interface”

X2 OUTPUT

X3 OUTPUT

24 VDC

MADE IN GERMANY

Fig. 12-2b: Socket “Interface” (Serial Interface) [OXYNOS® 100 with electrochemical measurement]

12 - 4

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

SERIAL INTERFACE (OPTION)

12.3.1 RS 232 C

This interface requires a shielded cable having at least three internal conductors.

START UP

5

1

6

9

1 GND
2 RxD
3 TxD
4 not used
5 GND
6 not used
7 not used
8 not used
9 not used

Fig. 12-3: Pin - Assignments “RS 232 Interface”

12.3.2 RS 485

Configure 2- or 4-wire operation via solder bridge LB 1 of PCB SIF 485 before mounting the PCB.
Connecting of [1 - 2] 2-wire-operation is selcted. Connecting of [2 - 3] 4-wire-operation is active .
Connect Jumper P2 at both ends of interface connection (termination). For network operation with
several analyzers via RS485 interface, termination has to be done at both ends of network
connection only. For the other analyzers remove the Jumper.

5

1

69

1 GND
2 RxD­3 RxD+
4 TxD+
5 TxD­6 not used
7 not used
8 not used
9 not used

Fig. 12-4: Pin - Assignments “RS 485 Interface”

In contrast to RS 232 C operation, simultaneous transmission and reception is not implemented
in this standard. This would not result in damage to the electronics, but could lead to destroy of
data. The analyzer behav es passively in this mode of operation; i.e., it keeps its transceiver set f or
reception whenever it is not transmitting. Since the time periods for transmission and reception are
controlled by protocols, “data collisions” are excluded.

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

12 - 5

SERIAL INTERFACE (OPTION)

START UP (INTERFACE - PARAMETER)

12.3.3 Switching ON/OFF Interface Operation

The analyzer may be set to either “on - line” or “off - line” status. This setting may be perf ormed
either from the keypad or via telegram input.

Ke yboard setting:

SIP - parameter On.-L. = 1 for on - line status
SIP - parameter On.-L. = 0 for off - line status

Telegram setting:

Instruction code 6: sets analyzer on - line status
Instruction code 7: sets analyzer off - line status

If the analyzer is set to off - line status, it will accept only instruction code 6. All other instructions
will be ignored and result in transmission of appropriate status telegrams.

12.3.4 Setting Interface Parameters

Agreement of interface parameters between analyzer and host computer is a fundamental
requirement for communication without errors.
The following analyzer parameters are concerned:

❏ baud rate: 600 / 1.200 / 2.400 / 4.800 bits/s
❏ data bits: 8
❏ stop bits: 2
❏ parity bit: none
❏ echo mode: on / off (received characters will be retransmitted immediately)
❏ LPB-test: on / off (message - length parity check)
❏ ID-no.: 0 to 99 (device ID - no. in RS 485 mode)

12 - 6

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

SERIAL INTERFACE (OPTION)

START UP (INTERFACE - PARAMETER)

All entries are made using the keys

and

Depress the key

until appears,

then depress the key

The unit is now ready for code entry, if such has not already been performed.

0 = off - line status
1 = on - line status

Each device is assigned a de vice number for operation
through the RS 485 interface (0 - 99).

Select interface type:
0 = RS 485 1 = RS 232 C

Set baud rate:
0 = 4.800 1 = 2.400

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

2 = 1.200 3 = 600

Echo-mode operation:
0 = OFF 1 = ON

Message - block parity check
0 = OFF 1 = ON

12 - 7

SERIAL INTERFACE (OPTION)

TELEGRAM SYNTAX

12.4 Telegram Syntax

Telegrams are assembled as follows:

12.4.1 Start Character ( “$” = Hex 24)

If the start character is missing, this will result in transmission of an appropriate status telegram
by the analyzer.

12.4.2 Terminate Character ( “CR” = Hex OD)

If the terminate character is missing, no decoding of the transmitted information will be performed,
and the analyzer will not respond. No response message will be transmitted.

12.4.3 Instruction Code

Each instruction is assigned a unique three digit numerical instruction code. If a received
instruction code should be other than three - digits in length or contain non - numerical ASCII­characters, the analyzer will transmit an appropriate status telegram. Reception of unassigned
instruction codes will also result in the transmittal of a status telegram.

In the RS 232 C mode of operation, the instruction code immediately follows the start character;
in the RS 485 mode of operation, the start character is followed by a two - digit de vice identification
code, the separator character. “;”, and a three - digit instruction code, in this order.

12.4.4 Hyphen Character ( “;” = Hex 3B)

Individual elements of a telegram line are separated by this hyphen character. Missing hyphen
characters can lead to misinterpretations of telegrams, and will result in transmission of an
appropriate status telegram.

12 - 8

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

SERIAL INTERFACE (OPTION)

STATUS TELEGRAM

12.4.5 Status Telegram

If telegram syntax is faulty, or analyzer is unable to act upon an instruction received, then the
analyzer will transmit a status telegram to the host computer .

These status telegrams are listed here for ref erence:

$ID;000;S100;LPB<CR> unrecognized instruction code
$ID;000;S101;LPB<CR> LP - byte in error
$ID;000;S102;LPB<CR> start character missing
$ID;000;S103;LPB<CR> input buffer overflow
$ID;xxx;S104;LPB<CR> analyzer off - line status
$ID;xxx;S105;LPB<CR> text line too long
$ID;xxx;S106;LPB<CR> undefined instruction
$ID;xxx;S107;LPB<CR> invalid integer value
$ID;xxx;S108;LPB<CR> numerical value outside defined range
$ID;xxx;S109;LPB<CR> invalid failure/status code
$ID;xxx;S110;LPB<CR> instruction can not be done here
$ID;xxx;S111;LPB<CR> failure in transmitted character
$ID;xxx;S112;LPB<CR> zeroing running
$ID;xxx;S113;LPB<CR> spanning running
$ID;xxx;S114;LPB<CR> invalid real number
$ID;xxx;S115;LPB<CR> automatic calibration mode off
$ID;xxx;S116;LPB<CR> parameter outside defined range
$ID;xxx;S117;LPB<CR> preflushing period is running

xxx: instruction code
ID: device ID - no. in RS 485 mode
LPB: message - length parity byte
<CR>: terminate character

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

12 - 9

SERIAL INTERFACE (OPTION)

NUMERICAL REPRESENTATION / BLOCK PARITY CHECK

12.4.6 Numerical Representations

Telegrams may contain integers or real numbers. The formats for these numbers are subject to
the following restrictions.

Integers: - maximum value = 216 - 1

- positive numbers only accepted

- no decimal points allowed

Real: - maximum of 6 digits accepted

- no alphabetic characters (e.g. 2.2E-6) allowed

- analyzer output is 6 - digit real numbers

12.4.7 Block Parity Check

The master control computer may insert a message - length parity byte into telegrams. These
invariably consist of tw o characters .

The message - length parity byte is the cumulatively EXCLUSIVE - OR correlation of all pre viously
transmitted characters of the telegram line. Representation is in hexadecimal format. For example,
if the decimal value should be decimal 13, this will be represented by the two characters “OD”, i.e.,
030H and 044H.

The verification procedure may be enabled or disabled at the analyzer (see Section 12.3.4).

12 - 10

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

SERIAL INTERFACE (OPTION)

12.5 Instruction Syntax

Code definitions:

RP: receive parameters analyzer is accepting values
SP: send parameters analyzer is sending values
RI: receive instructions
k: channel numbers 0 to 1
m: range number (for OXYNOS® 100 is invariably 1)
w: value

INSTRUCTION SYNTAX

<ID>: analyzer ID - no. for RS 485 mode of operation; f ollows start character
LPB: message - length parity byte
<CR>: terminate character

Receipt of any instruction codes not listed in the following section will be acknowledged by
transmittal of status code 106. Future expansions will make use of code numbers not currently in
use.

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

12 - 11

SERIAL INTERFACE (OPTION)

INSTRUCTION LIST

12.5.1 Instruction Listing

Instruction syntax: Instruction description:

$ID;001;k;LPB<CR> RI stand-by status
$ID;002;k;LPB<CR> RI sample gas valve open
$ID;003;k;LPB<CR> RI zeroing gas valve open
$ID;005;m;k;LPB<CR> RI span gas valve open
$ID;006;LPB<CR> RI on - line status
$ID;007;LPB<CR> RI off - line status
$ID;011;m;k;LPB<CR> SP at full scale range
$ID;013;k;LPB<CR> SP t
$ID;014;w;k;LPB<CR> RP t

(response time)

90

(response time)

90

$ID;017;k;LPB<CR> SP preflushing period
$ID;018;w;k;LPB<CR> RP preflushing period
$ID;019;k;LPB<CR> SP preflushing period
$ID;020;w;k;LPB<CR> RP preflushing period
$ID;023;k;LPB<CR> SP concentration
$ID;028;m;k;LPB<CR> SP span gas concentration
$ID;029;w;m;k;LPB<CR> RP span gas concentration
$ID;030;LPB<CR> SP status messages
$ID;603;k;LPB<CR> SP gas component
$ID;604;k;LPB<CR> RI automatic zeroing
$ID;605;k;LPB<CR> RI automatic spanning
$ID;606;0;LPB<CR> RI automatic zeroing & spanning
$ID;607;LPB<CR> SP absorber recove ry cycles
$ID;627;LPB<CR> SP failure message (possib le error batt. is

clearing by read out)

$ID;645;0;LPB<CR> SP pressure value

12 - 12

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

SERIAL INTERFACE (OPTION)

12.5.2 Response Telegrams

Response telegrams follow with the same syntax as the appropiate (SP-) commands (see 12.5).

The response telegram for instruction

“$ID;030;LPB<CR> SP Status messages”

shows as follows:

$ID;030;a;b;c;LPB<CR>

This means:

a: OK-Status 0 = Relay without powe r 1 = Relay active

b: Value of variable “calibration” 0 = Relay without power >0 = Relay active

b Meaning

0 No Calibration
1 Zeroing channel 1
2 Zeroing channel 2
3 Zeroing channel 1 + 2
4 Spanning channel 1
5 Spanning channel 2
6 Spanning channel 1 + 2
7 Spanning channel 1 first, then channel 2
8 reserved
9 reserved
10 Waiting for flushing time and t90 response time

c: Relay 3 0 = Relay without power 1 = Relay active

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

12 - 13

SERIAL INTERFACE (OPTION)

12 - 14

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

ERROR LIST

Error Code Possible Reasons Check / Correct

13. Error List

Some of the failures which may arise during measurement will be reported on the displays in forms
of error codes.

When such a failure arises, the display's will show the concentr ation value

alternating with (E = ERROR).

Note !

If there is an "error message", a digital status signal "Failure" can be given optional (see Item 10.3)!

Be sure to observe the safety measures for all workings at the anal yzer!

Error Code Possible Reasons Check / Correct

1. Displays are “switched OFF”

No Display

1. Press any key.

Check parameter dOFF
(see 8.5).

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

2. Voltage supply absent.

3. Connection front panel /BKS
absent.

2. Check electrical supply
(see Fig. A-2, Item 3).

3. Check connection
BKB - BKS (X1) (see 15.1).

13 - 1

ERROR LIST

Error Code Possible Reasons Check / Correct

Flushing

Battery buffer faulty.

Check, if Jumper J 7
is plugged (see 16.).

Channel 1

Channel 2

A/D-Conversion-End-Signal

absent

The EPROM - default
values were charged.

1. Jumper not or incorrect
plugged.

2. Positive or negative
reference voltage absent.

3. Light barrier signal absent.

4. Supply voltage
(internal 6 V DC) absent.

Exchange battery,
if battery voltage < 3,5 V
(BKS - Jumper J7 plugged).

The error is clearing after depressing
any key or with serial interface
instruction $627.

1. Channel 1: Check Jumper J1
Channel 2: Check Jumper J2
(see 16.)

Switch analyzer off and then on again.

2. Check reference voltage
(see 14.1.2/14.1.3).

3. Check measuring point 14.1.6

4. Check measuring point 14.1.1

Temperature compensation

inoperative

13 - 2

1. Start-up of A/D-conversion
in temperature channel
absent.

2. Supply voltage
(internal 6 V DC) absent.

1. Switch analyzer off and then on again.

2. Check measuring point 14.1.1

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

ERROR LIST

Error Code Possible Reasons Check / Correct

Channel 1

Channel 2

Tolerance error

Zero-gas value deviates

more than 10% of measuring

range from zero.

Channel 1

Channel 2

Tolerance error

Span-gas value deviates

more than 10% from nominal

value.

1. Incorrect zero gas in use.

2. Analyzer not calibrated.

1. Incorrect nominal value.

2. Incorrect span gas in use.

3. Analyzer not calibrated.

1. Check zero gas in use.

2. Switch off the tolerance check
before starting an adjustment
(see 8.4).

1. Enter the correct nominal value
(certification of span gas bottle)
(see 9.1.2).

2. Check span gas in use.

Use another or a new gas bottle.

Enter the correct nominal value

3. Switch off the tolerance check
before starting an adjustment
(see 8.4).

Channel 1

Channel 2

Measuring value more than

10% over full-scale range.

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

1. Concentration of measuring
gas too high.

Parameter ABS. does not
set to “0”.

Time - out for XON of
serial interface.

1. Check concentration of measuring
gas.

Use another analyzer suitable for
the concentration-range involved.

Set parameter ABS. to “0”
(see 8.16).

At drive of serial interface
XON - character is absent
(Time - out > 60 s).

13 - 3

ERROR LIST

Error Code Possible Reasons Check / Correct

Pressure sensor defective

EPROM Checksummary

defective

Test for RAM - IC's

defective

Analog output absent

1. Measuring range failure.

2. Connection faulty.

3. Pressure sensor faulty.

1. EPROM faulty.

2. BKS faulty.

RAM - IC's / BKS
faulty.

BKS faulty.

1. pressure not into the sensor
measuring range
(800 - 1100 hPa).

2. Check connection P1 (at BAF 01) /
pressure sensor (see 15.).

3. Exchange pressure sensor.

1. Exchange EPROM (see 25.).

2. Exchange BKS.

Exchange BKS.

Exchange BKS.

Fluctuating or

erroneous display

1. Leakage into gas circuit.

2. Gas pressure subject to
excessive fluctuations.

3. Oxygen senor is not
connected.

4. Faulty analog
preamplifiering.

5. Electrochemical sensor is
already consumed.

1. Perform a leakage check.
(see 20.).

2. Check the gas lines preceding and
following the sensor cell.

Eliminate any restrictions found
beyond the gas outlet fitting.

Reduce pumping rate or flow rate.

3. Check connections:
BKS X5 / Sensor channel 1
BKS X6 / Sensor channel 2
(see 15.).

4. Check measuring point 14.1.5 or

14.2.1 resp.

5. Exchange sensor (see23.)

13 - 4

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

ERROR LIST

Error Code Possible Reasons Check / Correct

Fluctuating or

erroneous display

(continuation)

6. Contamination of the gas
paths.

7. Barometric pressure
effects.

8. Temperature below the
dew point in the gas paths.

9. Faulty A/D - converter.

1. Incorrect response time
( t

- time).

90

6. Check gas paths and gas
conditionning to contamination.

7. Enter the correct value for
barometric pressure (see 8.1).
Pressure sensor faulty (E.37).

8. Check the temperature of the gas
paths and eliminate any reason of
condensation,

Maintain all temperatures at values
at least 10 °C above the dew point of
sample gas.

9. Exchange BKS.

1. Check the value for t

- time

90

(see 8.9).

Response - time too long

(t

- time)

90

2. Pumping rate inadequate.

3. Contamination of the gas
paths.

2. The feeder line between the
sampling point and the analyzer is
too long.
Use a larger, external pump;
consider adding a bypass line to the
process stream for sampling
purposes (see 5.1).

3. Check gas paths and gas
conditionning to contamination.

Clean gas paths and exchange the
filter elements.

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

13 - 5

ERROR LIST

Error Code Possible Reasons Check / Correct

13 - 6

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

14. Measuring Points of BKS and OXS

Be sure to observe the safety measures !

MEASURING POINTS OF BKS AND OXS

MEASURING POINTS OF BKS

14.1 Measuring points of BKS

All measuring points are measured against
ground (X 11 / X 28 or X 29) !

14.1.1 Supply Voltage + 6 V

Measuring point: X 14
Measuring device: DVM
Signal: + 6 V DC (+10 / -200 mV)

(adjust with Potentiometer R 90, if necessary)

Failure: No signal

Possible reasons: a) Voltage supply

is absent.

X 16

X 9

1

X 10

X 18

X 14

X 28
X 29

X 12

X 11

X 8

b) Voltage supply < 9 V

or polarity reversal

c) BKS faulty .

14.1.2 Reference Voltage positive

Measuring point: X 10
Measuring device: DVM
Signal: + 5,535 V DC (± 60 mV)

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

LB 1

U1

Front panel

X 25

U2

1

X 27

1

U3

1

14 - 1

MEASURING POINTS OF BKS AND OXS

MEASURING POINTS OF BKS

14.1.3 Reference Voltage negative

Measuring point: X 12
Measuring device: DVM
Signal: inverse [reference voltage positive]

The difference between negativ e reference v oltage and positive reference v oltage must
be no more than 10 mV (U
If the difference is bigger, exchange BKS.

14.1.4 Temperature Sensor

Measuring point: X 8
Measuring device: DVM
Signal: approx. 0 ± 500 mV DC (at ambient temperature)

F ailure. Signal > + 3,5 V DC

Possible reasons: a) Temperature sensor not connected (see 15.).

b) Temperature sensor faulty (exchange sensor).
c) Broken cable of temperature sensor (exchange sensor).
d) BKS faulty (exchange BKS).

ref. pos.

+ U

≤ ± 10 mV) !

ref. neg.

14.1.5 Analog Preamplifiering

Measuring point: X 25 (channel 1) / X 27 (channel 2)
Measuring device: DVM
Signal: At zero gas purge: 0 V DC (± 50 mV)

At ambient air purge: 500 mV DC (± 50 mV)

Failure: No signal or incorrect measuring values.

Possible reasons: a) Oxygen sensor not connected (see 15.).

b) Oxygen sensor faulty or consumed (exchange sensor).
c) BKS faulty (exchange BKS).

14 - 2

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

14.1.6 Light Barrier Signal (Simulation)

Measuring point: Plug 9, pin 2
Measuring device: Oscilloscope
Signal: square impulse U = 6 VSS (± 0,3 V)

Frequency = 24 Hz (± 0,1 Hz)

Failure: No signal

Possible reasons: a) Solder bridge LB 18 is open.

b) BKS faulty (exchange BKS).

MEASURING POINTS OF BKS AND OXS

MEASURING POINTS OF BKS

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14 - 3

MEASURING POINTS OF BKS AND OXS

MEASURING POINTS OF OXS

14.2 Measuring points of OXS (electrochemical measurement)

14.2.1 Sensor Signal

Measuring device: DVM

Measuring point: Tp 1 (Signal)

Tp 2 (

⊥⊥

⊥)

⊥⊥

Signal: At ambient air (approx. 21 Vol. - % O2): 700 mV to 1000 mV

Failure: No signal or faulty voltage

Possible reasons: a) Oxygen sensor not connected to PCB "OXS"

b) PCB “O XS” not connected / faulty
c) Oxygen sensor faulty
d) BKS faulty

Note !

If the measuring value is lower than < 700 mV at gas flow with ambient air , the sensor is consumed.
Exchange the sensor.

Tp 2

14 - 4

Tp 1

Fig. 14-1: PCB “OXS”, assembled, horizontal projection

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

15. Plug Pin Allocation of BKS and O XS

15.1 Plug Pin Allocation of BKS

P 1 oder P2 24 VDC - supply to heater

of paramagnetic sensor

PLUG PIN ALLOCATION OF BKS AND OXS

PLUG PIN ALLOCATION OF BKS

X 1 Front panel BKB

X 5 Oxygen sensor channel 1

[at electrochemical measurement:
PCB OXS channel 1
(cable P1, 5 - pin connector)]

X 6 electrochemical measurement only:

Oxygen sensor channel 2
[PCB OXS channel 2
(cable P1, 5 - pin connector)]

X 7 Temperature sensor

[at electrochemical measurement:
PCB OXS channel 1

(cable P1, 2 - pin connector)]

X 16

J 9

1

Option
BAF 01

X 36

P 1

X 9

1

X 18

P1

P2

1

X 7

1

X 16 Digital Outputs, parallel

X 18 Analog Outputs

J 9 Option BSI 10:

Status signals and
serial interface resp.

X 36/ Option BAF 01:
D 30 Pressure sensor PCB

P 1 at Option BAF 01:

Connector for pressure sensor

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

EPROM

17

EPROM

(on BAF 01)

MarkedMarked

X 1

8

Front panel

(D 30 on BKS)

X 6

1

X 5

15 - 1

PLUG PIN ALLOCATION OF BKS AND OXS

PLUG PIN ALLOCATION OF OXS (ELECTROCHEMICAL MEASUREMENT)

15.2 Plug Pin Allocation OXS (electrochemical measurement only)

1st measuring channel

Pin - base P2 Oxygen sensor

Cable P1, 5 - pin connector PCB BKS, X 5 (sensor signal channel 1)

Cable P1, 2 - pin connector PCB BKS, X 7 (temperature sensor)

2nd measuring channel

Pin - base P2 Oxygen sensor

Cable P1, 5 - pin connector PCB BKS, X 6 (sensor signal channel 2)

Cable P1, 2 - pin connector not used

View A: PCB OXS assembled, horizontal projection

PCB

“OXS”

View A

↓↓

↓

↓↓

Connection
Oxygen sensor
(Pin-base“P 2”)

Cable

“P 1”

15 - 2

Fig. 15-1: PCB “OXS”

90002955(2) OXYNOS® 100 e [4.10] 21.11.97

16. Jumper Allocation of BKS

J 1 A/D - Con version - Start channel 1

JUMPER ALLOCATION OF BKS

J 2 A/D - Con version- Start channel 2

(open for 1 - channel analyzer)

J 6 Watchdog signal

J 7 Buff er Battery

X 16

J 6

X 18

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

J 7

J 2

1

J 1

1

Frontplatte

16 - 1

JUMPER ALLOCATION OF BKS

16 - 2

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

MAINTENANCE

Maintenance

In general only the gas conditionning hardware will require maintenance; the analyzer itself
requires very little maintenance.

The following chec ks are recommended for maintenance of the proper operation of the analyzer .

Check and adjust zero-level: weekly

Check and adjust span: weekly

Perform leak testing: 6 times annually .

The maintenance frequencies stated above are presented as guidelines only; maintenance
operations may be required more or less frequently, depending upon usage and site conditions.

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MAINTENANCE

18 - 2

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

LEAK TESTING

20. Leak T esting

T esting f or gas leakage should be performed at bimonthly intervals and always immediately after
any repair or replacement of gas - line components is performed. The test procedure is as follo ws:

ANALYZER

Overpressure

Valve

Water

Fig. 20-1: Leak Testing with an U - Tube - Manometer

approx. 50 hPa

❍ Install a water - filled U - tube manometer at the sample gas outlet;

❍ Install a shut-off valve at the sample gas inlet.

Admit air into the instrument at the shut-off valve until the entire analyzer is subjected
to an overpressure of 50 hPa (approximately 500 mm water column; see Fig. 20-1).

Close the shut-off valv e and verify that follo wing a brief period required for pressure equilibrium,
that the height of the water column does not drop ov er a period of about 5 minutes .
Any external de vices, such as sample gas cooling hardware, dust filters etc., should be chec ked
in the course of leak testing.

Overpressure maxi. 500 hPa !

90002955(1) OXYNOS® 100 e [4.01] 01.07.96

20 - 1

LEAK TESTING

20 - 2

90002955(1) OXYNOS® 100 e [4.01] 01.07.96