Teledyne 3010PA User Manual

Oxygen Analyzer Oxygen Analyzer

Oxygen Analyzer

Oxygen Analyzer Oxygen Analyzer

OPERATING INSTRUCTIONS

Model 3010PA

Percent Oxygen Analyzer

Flush Mount Control Unit, PN D-64596B*

NEC Type Analysis Unit, PN D-65479*

DANGER

HIGHLY TOXIC AND OR FLAMMABLE LIQUIDS OR GASES MAY BE PRESENT IN THIS MONITORING SYSTEM.

PERSONAL PROTECTIVE EQUIPMENT MAY BE REQUIRED WHEN SERVICING THIS SYSTEM. HAZARDOUS VOLTAGES EXIST ON CERTAIN COMPONENTS INTERNALLY WHICH MAY PER-

SIST FOR A TIME EVEN AFTER THE POWER IS TURNED OFF AND DISCONNECTED. ONLY AUTHORIZED PERSONNEL SHOULD CONDUCT MAINTENANCE AND/OR SERVICING.

BEFORE CONDUCTING ANY MAINTENANCE OR SERVICING CONSULT WITH AUTHORIZED SUPERVISOR/MANAGER.

P/N M66106

08/06/99

ECO # 99-0323

Model 3010Model 3010

Model 3010

Model 3010Model 3010

PAPA

All Rights Reserved. No part of this manual may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any other language or computer language in whole or in part, in any form or by any means, whether it be electronic, mechanical, magnetic, optical, manual, or otherwise, without the prior written consent of Teledyne Analytical Instruments, 16830 Chestnut Street, City of Industry, CA 91749-

1580.

Warranty

This equipment is sold subject to the mutual agreement that it is warranted by us free from defects of material and of construction, and that our liability shall be limited to replacing or repairing at our factory (without charge, except for transportation), or at customer plant at our option, any material or construction in which defects become apparent within one year from the date of shipment, except in cases where quotations or acknowledgements provide for a shorter period. Components manufactured by others bear the warranty of their manufacturer. This warranty does not cover defects caused by wear, accident, misuse, neglect or repairs other than those performed by Teledyne or an authorized service center. We assume no liability for direct or indirect damages of any kind and the purchaser by the acceptance of the equipment will assume all liability for any damage which may result from its use or misuse.

We reserve the right to employ any suitable material in the manufacture of our apparatus, and to make any alterations in the dimensions, shape or weight of any parts, in so far as such alterations do not adversely affect our warranty.

Important Notice

This instrument provides measurement readings to its user, and serves as a tool by which valuable data can be gathered. The information provided by the instrument may assist the user in eliminating potential hazards caused by his process; however, it is essential that all personnel involved in the use of the instrument or its interface, with the process being measured, be properly trained in the process itself, as well as all instrumentation related to it.

The safety of personnel is ultimately the responsibility of those who control process conditions. While this instrument may be able to provide early warning of imminent danger, it has no control over process conditions, and it can be misused. In particular, any alarm or control systems installed must be tested and understood, both as to how they operate and as to how they can be defeated. Any safeguards required such as locks, labels, or redundancy, must be provided by the user or specifically requested of Teledyne at the time the order is placed.

Therefore, the purchaser must be aware of the hazardous process conditions. The purchaser is responsible for the training of personnel, for providing hazard warning methods and instrumentation per the appropriate standards, and for ensuring that hazard warning devices and instrumentation are maintained and operated properly.

Analytical Instruments, the manufacturer of this instrument, cannot accept responsibility for conditions beyond its knowledge and control. No statement expressed or implied by this document or any information disseminated by the manufacturer or its agents, is to be construed as a warranty of adequate safety control under the user’s process

conditions.

Oxygen Analyzer Oxygen Analyzer

Oxygen Analyzer

Oxygen Analyzer Oxygen Analyzer

Table of Contents

Specific Model Information..................................iv

Preface ................................................................v

Part I: Control Unit, Model PA ................ Part I: 1-1

Part II: Analysis Unit, Model P............... Part II: 1-1

Appendix ......................................................... A-1

iii

Model 3010Model 3010

Model 3010

Model 3010Model 3010

PAPA

Specific Model Information

The instrument for which this manual was supplied may incorporate one or more options not supplied in the standard instrument. Commonly available options are listed below, with check boxes. Any that are incorporated in the instrument for which this manual was supplied are indicated by a check mark in the box.

Instrument Serial Number: __________________________

The instrument with the above serial number has the following Options:

o 3010PA-C Three gas inputs, for sample, zero and span gases, with

three solenoid-actuated gas-flow control valves built in. Valves are automatically synchronized to the analyzer's electronic control sequences.

o 3010PA–F Built-in flame arresters for Groups C and D service. o 3010PA–G Built-in flame arresters for Groups C and D service, plus

gas-control valves as in –C option, above.

o 3010PA–H Built-in flame arresters for Group B (hydrogen) service. o 3010PA–I Built-in flame arresters for Group B (hydrogen) service,

plus gas-control valves as in –C option, above.

o 3010PA–M 4-20 mA current signal outputs for Percent of Full Scale

and Range ID, in addition to voltage outputs.

o 3010PA–S Entire sample system including cell block and all wetted

parts fabricated from stainless steel.

o 19" Rack Mount

The 19" Relay Rack Mount units are available with either one or two series 3000 analyzer Control Units installed in a standard 19" panel and ready to mount in a standard rack. See Appendix for details.

o Cell Class* ____________________ (B-1 standard).

Enter Class Designation

* See Part II, Chapter 2 and/or any addendum that may be attached

to this manual for cell specifications.

Oxygen Analyzer Oxygen Analyzer

Oxygen Analyzer

Oxygen Analyzer Oxygen Analyzer

Preface

Overview

The Analytical Instruments Model 3010PA Percent Oxygen Analyzer is a versatile microprocessor-based instrument for detecting oxygen in a variety of background gases. It is a “split architecture” instrument. This means that a general purpose Control Unit, designed for nonhazardous areas only, remotely controls a specially designed Analysis Unit, or remote probe, that can operate in a hazardous area.

Part I of this manual covers the Model 3010PA General Purpose flushpanel and/or rack-mount Control Unit only. This Control Unit is for indoor use in a nonhazardous environment. The Analysis Units (or Remote Probes) they control, can be designed for a variety of hazardous environments. Part II of this manual covers the 3010P Analysis Unit.

Typical Applications

A few typical applications of the Model 3010PA are:

• Monitoring inert gas blanketing

• Air separation and liquefaction

• Chemical reaction monitoring

• Semiconductor manufacturing

• Petrochemical process control

• Quality assurance

• Gas analysis certification.

Model and Part Number Designations

The part numbers are the most specific identification. When using this manual for operation, maintenance, or ordering parts, check the part numbers

Model 3010Model 3010

Model 3010

Model 3010Model 3010

on your Instruments to be sure of a match. Where an underscore (_) appears in a model number, the unit has more than one application. For example, 3010P_C means that the same unit is part of the 3010PAC and the 3010PBC models.

3010TA: NEC Type Trace Oxygen Analyzer with flush mount Control

3010PA: NEC Type Percent Oxygen Analyzer with flush mount

3010TB: NEC type Trace Oxygen Analyzer with bulkhead mount

3010PB: NEC type Percent Oxygen Analyzer with bulkhead mount

PAPA

Unit. Consists of 3010TA Control Unit, PN D-64596A and a 3010T Analysis Unit, PN D-65478.

Control Unit. Consists of 3010PA Control Unit, PN D-64596B and a 3010P Analysis Unit, PN D-65479.

Control Unit. Consists of 3010TB/PB Control Unit, PN D-66190A, and a 3010T Analysis Unit, PN D-65478.

Control Unit. Consists of 3010TB Control Unit, PN D-66190

B or C, and a 3010T Analysis Unit, PN D-65479.

3010TAC: CENELEC type Trace Oxygen Analyzer with flush mount

Control Unit. Consists of 3010TA Control Unit, PN D-66192A, and a 3010T_C Analysis Unit, PN D-66193.

3010PAC: CENELEC type Percent Oxygen Analyzer with flush mount

Control Unit. Consists of 3010PA Control Unit, PN D-66192 B or C, and a 3010P_C Analysis Unit, PN D-66191.

3010TBC: CENELEC type Trace Oxygen Analyzer with bulkhead mount

Control Unit. Consists of 3010TB Control Unit, PN D-66194A, and a 3010T_C Analysis Unit, PN D-66193.

3010PBC: CENELEC type Percent Oxygen Analyzer with bulkhead

mount Control Unit. Consists of 3010PB Control Unit, PN D-66194 B or C, and a 3010P_C Analysis Unit, PN D-66191.

Options: See Specific Model Information sheet, on page iv for details.

Main Features of the Analyzer

The Model 3010PA series Oxygen Analyzers are sophisticated yet

simple to use. The main features of these analyzers include:

• A 2-line alphanumeric display screen, driven by microprocessor electronics, that continuously prompts and informs the operator.

• High resolution, accurate readings of oxygen content: from low 0-1 % levels through 0-100 %. Large, bright, meter readout.

Oxygen Analyzer Oxygen Analyzer

Oxygen Analyzer

Oxygen Analyzer Oxygen Analyzer

• Optional stainless steel cell block available.

• Advance design Micro-Fuel Cell sensor with a one year warranty and an expected lifetime of two years.

• Versatile analysis over a wide range of applications.

• Microprocessor based electronics: 8-bit CMOS microprocessor with 32 kB RAM and 128 kB ROM.

• Three user definable output ranges allow best match to users process and equipment: 0-1 % through 0-100 %.

• Air-calibration range for convenient spanning at 20.9 %.

• Auto Ranging allows analyzer to automatically select the proper preset range for a given measurement. Manual override allows the user to lock onto a specific range of interest.

• Two adjustable concentration alarms and a system failure alarm.

• Self-diagnostic testing, at startup and on demand, with continuous power-supply monitoring.

• Two way RFI protection.

• RS-232 serial digital port for use with a computer or other digital communications device.

• Analog outputs for Concentration and Analysis Range: 0–1 V dc standard. Additional isolated 4–20 mA dc optional.

• Compact and versatile design: flush-panel, rack-mountable, or bulkhead mounted Control Units available.

vii

Model 3010Model 3010

Model 3010

Model 3010Model 3010

Commonwealth of Europe (CE) for Radio Frequency Interference, Electromagnetic Interference (RFI/EMI), and Low Voltage Directive (LVD).

The following International Symbols are used throughout the Instruction Manual for your visual and immediate warnings and when you have to attend CAUTION while operating the instrument:

PAPA

Model 3010PA complies with all of the requirements of the

STAND-BY, Instrument is on Stand-by, but circuit is active

GROUND

Protective Earth

CA UTION, The operator needs to refer to the manual

for further information. Failure to do so may compromise the safe operation of the equipment.

CAUTION, Risk of Electric Shock

viii

Part I: Control Unit

OPERATING INSTRUCTIONS

Models 3010PA

Oxygen Analyzer

Pa rt I: Control Unit

Flush Mount

Part Number: D-64596B

Part I: i

Model 3010PA Oxygen Analyzer

Table of Contents

1 Introduction

1.1 Overview........................................................................ 1-1

1.2 Control Unit Front Panel................................................. 1-1

1.3 Recognizing Difference Between LCD & VFD............... 1-3

1.4 Control Unit Rear Panel................................................. 1-3

2 Operational Theory

2.1 Introduction .................................................................... 2-1

2.2 Electronics and Signal Processing ................................ 2-1

2.3 Temperature Control ...................................................... 2-3

3 Installation

3.1 Unpacking the Control Unit............................................ 3-1

3.2 Mounting the Control Unit .............................................. 3-1

3.3 Rear Panel Connections................................................ 3-2

3.4 Installation Checklist...................................................... 3-9

4 Operation

4.1 Introduction .................................................................... 4-1

4.2 Using the Data Entry and Function Buttons ................... 4-2

4.3 The

4.3.1 Setting the Display................................................. 4-4

4.3.2 Setting up an Auto-Cal........................................... 4-5

4.3.3 Pass w ord Protection.............................................. 4-5

4.3.4 Logout.................................................................... 4-8

4.3.5 System Self-Diagnostic Test .................................. 4-9

4.3.6 Version Screen ...................................................... 4-9

System

4.3.3.1 Entering the Password................................... 4-6

4.3.3.2 Installing or Changing the Password ............. 4-7

Function ..................................................... 4-3

ii: Part I

Part I: Control Unit

4.4 The

4.4.1 Cell Failure ............................................................ 4-10

4.4.2 Span Cal................................................................ 4-11

4.5 The

4.6 The

4.6.1 Setting the Analog Output Ranges......................... 4-15

4.6.2 Fixed Range Analysis ............................................ 4-16

4.7 The

4.8 Signal Output ................................................................. 4-17

5 Maintenance

5.1 Routine Maintenance..................................................... 5-1

5.2 Fuse Replacement ......................................................... 5-1

5.3 System Self Diagnostic Test........................................... 5-3

5.4 Major Internal Components............................................ 5-3

5.5 Cleaning ........................................................................ 5-4

Span

Functions....................................................... 4-10

4.4.2.1 Auto Mode Spanning ..................................... 4-11

4.4.2.2 Manual Mode Spanning................................. 4-12

Alarms Range

Analyze

Function...................................................... 4-13

Function ...................................................... 4-15

Function.................................................... 4-17

Part I: iii

Oxygen Anal yzer Part I: Control Unit

Introduction

1.1 Overview

The Analytical Instruments Model 3010PA Analyzer Control Unit, together with a 3010P Analysis Unit, is a versatile microprocessor-based instrument for detecting percent amounts of oxygen in a variety of gases.

Part I, this part, of this manual covers the Model 3010PA series General Purpose flush-panel and/or rack-mount Control Units. (The Analysis Unit is covered in Part II of this manual.) The Control Unit is for indoor use in a nonhazardous environment only. The Analysis Units (or Remote Probes) it controls can be designed for a variety of hazardous environments.

1.2 Control Unit Front Panel

The standard 3010PA Control Unit is housed in a rugged metal case with all remote controls and displays accessible from the front panel. See Figure 1-1. The front panel has a digital meter, an alphanumeric display, and thirteen buttons for operating the analyzer.

Part I: 1-1

1 Introduction Model 3010PA

Figure 1-1: Front of Unmounted Control Unit

Function Keys: Six touch-sensitive membrane switches are used to

change the specific function performed by the analyzer:

• Analyze Perform analysis for oxygen content of a sample gas.

• System Perform system-related tasks (described in detail in

chapter 4, Operation.).

• Span Span calibrate the analyzer.

• Zero Zero calibrate the analyzer.

• Alarms Set the alarm setpoints and attributes.

• Range Set up the 3 user definable ranges for the instrument.

Data Entry Keys: Six touch-sensitive membrane switches are used to

input data to the instrument via the alphanumeric VFD display:

• Left & Right Arrows Select between functions currently

displayed on the VFD screen.

• Up & Down Arrows Increment or decrement values of

functions currently displayed.

1-2: Part I

Oxygen Anal yzer Part I: Control Unit

• Enter Moves VFD display on to the next screen in a series.

If none remains, returns to the

• Escape Moves VFD display back to the previous screen in a

series. If none remains, returns to the

Digital Meter Display: The meter display is a LED device that produces large, bright, 7-segment numbers that are legible in any lighting. It is accurate across all analysis ranges from 0-1 % through 0-100 %

Alphanumeric Interface Screen: The VFD screen is an easy-to-use interface between operator and analyzer. It displays values, options, and messages that give the operator immediate feedback.

I/O Power Button: The red I/O button switches the instrument power between I (ON) and O (a Keep-Alive state). In the O state, the instrument’s circuitry is operating, but there are no displays or outputs.

Analyze

CAUTION: The power cable must be unplugged to fully

disconnect power from the instrument. When chassis is exposed or when access door is open and power cable is connected, use extra care to avoid contact with live electrical circuits .

screen.

Analyze

screen.

Access Door: For access to the front panel electronics, the front panel swings open when the latch in the upper right corner of the panel is pressed all the way in with a narrow gauge tool. Accessing the main circuit board and other electronics requires unfastening the rear panel screws and sliding the unit out of the case.

1.3 Recognizing Difference Between LCD & VFD

LCD has GREEN background with BLACK characters. VFD has DARK background with GREEN characters. In the case of VFD - NO CONTRAST ADJUSTMENT IS NEEDED.

1.4 Control Unit Rear Panel

The Control Unit rear panel, shown in Figure 1-2, contains the electrical connectors for external inputs and outputs. The input/output functions are described briefly here and in detail in the Installation chapter of this manual.

Part I: 1-3

1 Introduction Model 3010PA

Figure 1-2: Model 3010PA Rear Panel

• Power Connection Universal AC power source.

• Analog Outputs 0-1 V dc concentration and 0-1 V dc

range ID. Optional isolated 4-20 mA dc and 4-20 mA dc range ID.

• Alarm Connections 2 concentration alarms and 1 system

alarm.

• RS-232 Port Serial digital concentration signal

output and control input.

• Remote Probe Provides all electrical interconnect to

the Analysis Unit or Remote Probe.

• Remote Span/Zero Digital inputs allow external control of

analyzer calibration.

• Calibration Contact To notify external equipment that

instrument is being calibrated and readings are not monitoring sample.

• Range ID Contacts Four separate, dedicated, range relay

contacts. Low, Medium, High, Cal.

1-4: Part I

Oxygen Anal yzer Part I: Control Unit

• Remote Probe Interfaces with an Analysis Unit or

Remote Probe (external sensor/sample system).

• Network I/O Serial digital communications for local

network access. For future expansion. Not implemented at this printing.

Note: If you require highly accurate Auto-Cal timing, use external

Auto-Cal control where possible. The internal clock in the Model 3010PA is accurate to 2-3 %. Accordingly, internally scheduled calibrations can vary 2-3 % per day.

Part I: 1-5

1 Introduction Model 3010PA

1-6: Part I

Oxygen Anal yzer Part I: Control Unit

Operational Theory

2.1 Introduction

The Model 3010PA Oxygen Analyzer Control Unit uses an 8031 microcontroller with 32 kB of RAM and 128 kB of ROM to control all signal processing, input/output, and display functions for the Model 3010PA analyzer. (The sample system and Micro-Fuel Cell sensor are covered in Part II, Analysis Unit, in this manual.) System power is supplied from a universal power supply module designed to be compatible with any international power source.

2.2 Electronics and Signal Processing

All of the Analyzer electronics are located on Printed Circuit Board (PCB) assemblies inside the Control Unit chassis. The PCB locations are illustrated in section 5, Maintenance.

Refer to Figure 2-1, Block Diagram of the 3010PA CU Electronics:

In the presence of oxygen, the sensor (in the Analysis Unit) generates a current. A current to voltage amplifier (in the Control Unit) converts this current to a voltage.

The second stage amplifier amplifies the voltage. It also uses a signal from the thermistor (which is physically located in the Analysis Unit cell block) to provide temperature compensation for the sensor signal. The thermistor is a temperature dependent resistance that changes the gain of the amplifier in proportion to the temperature changes in the block. This thermistor signal compensates for the change in the cell output due to the temperature changes. The result is a signal that is temperature independent. The output from the second stage amplifier is sent to an 18-bit analog to digital converter controlled by the microprocessor.

Part I: 2-1

2 Operational Theory Model 3010PA

Figure 2-1: Block Diagram of the 3010PA CU Electronics

2-2: Part I

Oxygen Anal yzer Part I: Control Unit

The digital concentration signal—along with input from the control panel—is processed by the microprocessor, and appropriate control signals are directed to the display, alarms and communications port as well as to the optional gas control valves in the Analysis Unit.

The same digital information is also sent to a 12 bit digital to analog converter that produces the 0-1 V dc and the optional 4-20 mA dc analog concentration signal outputs, and the analog range ID outputs.

The microprocessor monitors the power supply, and activates the system failure alarm if a malfunction is detected.

2.3 Temperature Control

For accurate analysis this instrument is temperature controlled not to fall beneath a certain temperature. This temperature is 22oF. This is to prevent the sensor from freezing in cold environments.

Part I: 2-3

2 Operational Theory Model 3010PA

2-4: Part I

Oxygen Anal yzer Part I: Control Unit

Installation

Installation of Model 3010 Analyzers includes:

1. Unpacking, mounting, and interconnecting the Control Unit and the Analysis Unit

2. Making gas connections to the system

3. Making electrical connections to the system

4. Testing the system.

This chapter covers installation of the Control Unit. (Installation of the

Analysis Unit is covered in Part II of this manual.)

3.1 Unpacking the Control Unit

The analyzer is shipped with all the materials you need to install and prepare the system for operation. Carefully unpack the Control Unit and inspect it for damage. Immediately report any damage to the shipping agent.

3.2 Mounting the Control Unit

The Model 3010PA Control Unit is for indoor use in a general purpose area. It is NOT for hazardous environments of any type.

The standard model is designed for flush panel mounting. Figure 3-1 is an illustration of a Model 3010 standard Control Unit front panel and mounting bezel. There are four mounting holes—one in each corner of the rigid frame. Drawing number D-64596, at the back of this manual, contains a panel cutout diagram.

On special order, a 19" rack-mounting can be provided. Per order, one or two 3010 series Control Units are flush-panel mounted on the 19" rack panel. See Figure 3-2.

Figure 3-1: Front Panel of the Model 3010 Control Unit

Part I: 3-1

3 Installation Model 3010PA

Mounting Holes (4)

Latch

Hinge

Figure 3-1: Front Panel of the Model 3010 Control Unit

Figure 3-2: Single and Dual 19" Rack Mounts

All operator controls are mounted on the control panel, which is hinged on the left edge and doubles as a door to provide access to the internal components of the instrument. The door is spring loaded and will swing open when the button in the center of the latch (upper right corner) is pressed

3-2: Part I

Oxygen Anal yzer Part I: Control Unit

all the way in with a narrow gauge tool (less than 0.18 inch wide), such as a small hex wrench or screwdriver Allow clearance for the door to open in a 90-degree arc of radius 7.625 inches. See Figure 3-3.

Figure 3-3: Required Front Door Clearance

3.3 Rear Panel Connections

Figure 3-4 shows the Control Unit rear panel. Connections for power, communications, and both digital and analog signal outputs are described in the following paragraphs. Wire size and maximum length data appear in the Drawings in the back of this manual.

Figure 3-4: Rear Panel of the Model 3010 Control Unit

For safe connections, ensure that no uninsulated wire extends outside of the connectors they are attached to. Stripped wire ends must insert completely into terminal blocks. No uninsulated wiring should be able to come in contact with fingers, tools or clothing during normal operation.

Part I: 3-3

3 Installation Model 3010PA

Primary Input Power: The universal power supply requires a 85–250

V ac, 47-63 Hz power source. The power cord receptacle and fuse block are located in the same assembly. Insert the female plug end of the power cord into the power cord receptacle.

CAUTION: Power is applied to the instrument's circuitry as

long as the instrument is connected to the power

I/O

source. The red switching power on or off to the displays and outputs only.

Fuse Installation: The fuse block, at the right of the power cord

receptacle, accepts US or European size fuses. A jumper replaces the fuse in whichever fuse receptacle is not used. Fuses are not installed at the factory. Be sure to install the proper fuse as part of installation. (See Fuse Replace- ment in chapter 5, maintenance.)

Analog Outputs: There are four DC output signal connectors with

spring terminals on the panel. There are two wires per output with the polarity noted. See Figure 3-5. The outputs are:

switch on the front panel is for

0–1 V dc % of Range: Voltage rises linearly with increasing oxygen, from

0 V at 0 % to 1 V at full scale. (Full scale = 100% of programmed range.)

0–1 V dc Range ID: 0.25 V = Low Range, 0.5 V = Medium Range,

0.75 V = High Range, 1 V = Air Cal Range.

4–20 mA dc % Range: (Optional) Current increases linearly with increasing

oxygen, from 4 mA at 0 % to 20 mA at full scale. (Full scale = 100% of programmed range.)

4–20 mA dc Range ID: (Optional) 8 mA = Low Range, 12 mA = Medium

Range, 16 mA = High Range, 20 mA = Air Cal.

3-4: Part I

Figure 3-5: Analog Output Connections

Oxygen Anal yzer Part I: Control Unit

Alarm Relays: The three alarm-circuit connectors are spring terminals for making connections to internal alarm relay contacts. Each provides a set of Form C contacts for each type of alarm. Each has both normally open and normally closed contact connections. The contact connections are indicated by diagrams on the rear panel. They are capable of switching up to 3 amperes at 250 V ac into a resistive load. See Figure 3-6. The connectors are:

Threshold Alarm 1: • Can be configured as high (actuates when concen-

tration is above threshold), or low (actuates when concentration is below threshold).

• Can be configured as failsafe or nonfailsafe.

• Can be configured as latching or nonlatching.

• Can be configured out (defeated).

Threshold Alarm 2: • Can be configured as high (actuates when concen-

tration is above threshold), or low (actuates when concentration is below threshold).

• Can be configured as failsafe or nonfailsafe.

• Can be configured as latching or nonlatching.

• Can be configured out (defeated).

System Alarm: Actuates when DC power supplied to circuits is

unacceptable in one or more parameters. Permanently configured as failsafe and latching. Cannot be defeated. Actuates if self test fails.

(Reset by pressing press

I/O

again and any other button EXCEPT

System

Further detail can be found in chapter 4, section 4-5.

to resume.

I/O

button to remove power. Then

Figure 3-6: Types of Relay Contacts

Part I: 3-5

3 Installation Model 3010PA

Digital Remote Cal Inputs: Accept 0 V (off) or 24 V dc (on) inputs

for remote control of calibration. (See Remote Calibration Protocol below.) Zero: Floating input. 5 to 24 V input across the + and – terminals

puts the analyzer into the grounded at the source of the signal. Signal must be removed before zeroing is complete, or the zeroing will repeat. The Analysis Unit internal valves operate synchronously to supply the zero gas. See Remote Probe Connector at end of section 3.3.

Span: Floating input. 5 to 24 V input across the + and – terminals

puts the analyzer into the grounded at the source of the signal. Signal must be removed before spanning is complete, or the spanning will repeat. The Analysis Unit internal valves operate synchronously to supply the span gas. See Remote Probe Connector at end of section 3.3.

Zero

mode. Either side may be

Span

mode. Either side may be

Cal Contact: This relay contact is closed while analyzer is spanning

and/or zeroing. (See Remote Calibration Protocol below.)

Remote Calibration Protocol: To properly time the Digital Remote

Cal Inputs to the Model 3010 Analyzer, the customer's controller must monitor the Cal Relay Contact.

When the contact is OPEN, the analyzer is analyzing, the Remote Cal

Inputs are being polled, and a zero or span command can be sent.

When the contact is CLOSED, the analyzer is already calibrating. It

will ignore your request to calibrate, and it will not remember that request.

Once a zero or span command is sent, and acknowledged (contact closes), release it. If the command is continued until after the zero or span is complete, the calibration will repeat and the Cal Relay Contact (CRC) will close again.

For example:

1) Test the CRC. When the CRC is open, Send a zero command until the CRC closes (The CRC will quickly close.)

2) When the CRC closes, remove the zero command.

3) When CRC opens again, send a span command until the CRC closes. (The CRC will quickly close.)

4) When the CRC closes, remove the span command.

3-6: Part I

Oxygen Anal yzer Part I: Control Unit

When CRC opens again, zero and span are done, and the sample is

being analyzed.

Note: The Remote Probe connector (paragraph 3.3) provides signals

to the Analysis Unit to ensure that the zero and span gas valves will be controlled synchronously.

Range ID Relays: Four dedicated Range ID relay contacts. The first

three ranges are assigned to relays in ascending order—Low range is assigned to Range 1 ID, Medium range is assigned to Range 2 ID, and High range is assigned to Range 3 ID. The fourth range is reserved for the Air Cal Range (25%).

Network I/O: A serial digital input/output for local network protocol.

At this printing, this port is not yet functional. It is to be used in future versions of the instrument.

RS-232 Port: The digital signal output is a standard RS-232 serial

communications port used to connect the analyzer to a computer, terminal, or other digital device. It requires a standard 9-pin D connector.

The data is status information, in digital form, updated every two

seconds. Status is reported in the following order:

• The concentration in percent

• The range in use (HI, MED, LO)

• The span of the range (0-10 %, etc)

• Which alarms—if any—are disabled (AL–x DISABLED)

• Which alarms—if any—are tripped (AL–x ON).

Each status output is followed by a carriage return and line feed.

Three input functions using RS-232 have been implemented to date.

They are described in Table 3-1.

Table 3-1: Commands via RS-232 Input

Command Description as<enter> Immediately starts an autospan. az<enter> Immediately starts an autozero. co<enter> Reports "Raw Cell Output" (current output of the sensor

itself) in µA. For example—

Cell Output: 99 µA

st<enter> Toggling input. Stops/Starts any status message output from

the RS-232, until st<enter> is sent again.

Part I: 3-7

3 Installation Model 3010PA

The RS-232 protocol allows some flexibility in its implementation.

Table 3-2 lists certain RS-232 values that are required by the 3010PA.

Table 3-2: Required RS-232 Options

Parameter Setting

Baud 2400

Byte 8 bits

Parity none

Stop Bits 1

Message Interval 2 seconds

Remote Probe Connector: The Model 3010PA is a split architecture

(dual-chassis) instrument, which has a Remote Probe, or Analysis Unit. The Remote Probe connector is used for controlling the Analysis Unit internal sample, zero, and span gas valves (which are optional), and for receiving the oxygen sensor and thermistor signals. See Figure 3-7. The connections at the Analysis Unit are covered in detail in Part II, section 3.4, of this manual.

Figure 3-7: Remote Probe Connector Pinouts

If you use your own gas control valves, use the interconnect diagram in Figure 3-8 for the valves. (See drawing D-64950 for wire recommendations.)

3-8: Part I

Oxygen Anal yzer Part I: Control Unit

Figure 3-8: Remote Probe Connector Pinouts

The voltage from the solenoid outputs is nominally 0 V for the OFF and 15 V dc for the ON conditions. The maximum combined current that can be pulled from these output lines is 100 mA. (If two lines are ON at the same time, each must be limited to 50 mA, etc.)

If more current and/or a different voltage is required, use relays, power amplifiers, or other matching circuitry to provide the actual driving current.

Note that each individual line has a series FET with a nominal ON resistance of 5 ohms (9 ohms worst case). This can limit the obtainable voltage, depending on the load impedance applied. See Figure 3-9.

Figure 3-9: FET Series Resistance

3.4 Testing the System

After The Control Unit and the Analysis Unit are both installed and interconnected, and the system gas and electrical connections are complete, the system is ready to test. Before plugging either of the units into their respective power sources:

Part I: 3-9

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