Teledyne 3010TA User Manual

Oxygen Analyzer Oxygen Analyzer

Oxygen Analyzer

Oxygen Analyzer Oxygen Analyzer

OPERA TING INSTRUCTIONS

Model 3010TA

Trace Oxygen Analyzer

Flush Mount Control Unit, PN D-64596A*

NEC Type Analysis Unit, PN D-65478*

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 M65693

11/22/99

ECO:#99-0459

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Copyright © 1999 Teledyne Analytical Instruments

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.

ii

Oxygen Analyzer Oxygen Analyzer

Oxygen Analyzer

Oxygen Analyzer Oxygen Analyzer

Table of Contents

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

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

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

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

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

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

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

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

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

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* ____________________ (L-2C standard).

Enter Class Designation

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

attached to this manual for cell specifications.

iv

Oxygen Analyzer Oxygen Analyzer

Oxygen Analyzer

Oxygen Analyzer Oxygen Analyzer

Preface

Overview

The Analytical Instruments Model 3010TA Trace Oxygen Analyzer is a
versatile microprocessor-based instrument for detecting parts-per-million
(ppm) levels of 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 3010TA 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 3010T Analysis Unit.

Typical Applications

A few typical applications of the Model 3010TA 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

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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,
3010T_C means that the same unit is part of the 3010TAC and the 3010TBC
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

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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 Bor 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 3010TA 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.

vi

• High resolution, accurate readings of oxygen content: from low
ppm levels through 25%. Large, bright, meter readout.

Oxygen Analyzer Oxygen Analyzer

Oxygen Analyzer

Oxygen Analyzer Oxygen Analyzer

• Stainless steel cell block is standard equipment.

• Advance design Micro-Fuel Cell sensor, Specially designed
model for trace analysis, has 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: 0-10 ppm through 0-250,000 ppm for
trace analysis.

• 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. Isolated 4–20 mA dc standard.

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

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viii

Part I: Control Unit

OPERATING INSTRUCTIONS

Model 3010TA

Oxygen Analyzer

Part I: Control Unit

Flush Mount

Part Numbers: D-64596A

Part I: i

Model 3010TA 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 Electrical Connections ................................................... 3-3

3.4 Testing the System......................................................... 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 Tracking the O2 Readings during Calibration ......... 4-4

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

4.3.3 Password Protection.............................................. 4-5

4.3.4 Logout.................................................................... 4-9

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

4.3.6 Version Screen ...................................................... 4-10

4.3.7 Showing Negative Oxygen readings ..................... 4-10

4.4 The

System

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

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

Zero

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

and

Span

Functions ....................................... 4-11

ii: Part I

Part I: Control Unit

4.4.1 Zero Cal................................................................. 4-12

4.4.1.1 Auto Mode Zeroing ........................................ 4-12

4.4.1.2 Manual Mode Zeroing.................................... 4-12

4.4.1.3 Cell Failure .................................................... 4-13

4.4.2 Span Cal................................................................ 4-14

4.4.2.1 Auto Mode Spanning ..................................... 4-14

4.4.2.2 Manual Mode Spanning................................. 4-15

4.4.3 Span Failure .......................................................... 4-16

4.5 The

4.6 The

4.6.1 Setting the Analog Output Ranges......................... 4-19

4.6.2 Fixed Range Analysis ............................................ 4-19

4.7 The

4.8 Signal Output ................................................................. 4-21

Alarms
Range

Analyze

Function...................................................... 4-16

Function ...................................................... 4-18

Function.................................................... 4-20

5 Maintenance

5.1 Fuse Replacement ......................................................... 5-1

5.2 System Self Diagnostic Test........................................... 5-2

5.3 Major Internal Components............................................ 5-3

5.4 Cleaning ........................................................................ 5-4

Part I: iii

Model 3010TA Oxygen Analyzer

iv: Part I

Oxygen Anal yzer Part I: Control Unit

Introduction

1.1 Overview

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

Part I, this part, of this manual covers the Model 3010TA 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 3010TA 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 3010TA

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Digital Meter

s

Alphanumeric
Display

301

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X

Y

G

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N

A

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Y

Z

E

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Data Entry Buttons

F uncti o n B u tto n s

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:

Door Latch

Standby Sw itch

• 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. The –TA models produce continuous
readout from 0-10,000 ppm and then switch to continuous percent readout
from 1-25 %.

Alphanumeric Interface Screen: The backlit VFD screen is an easy­to-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

screen.

Analyze

screen.

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 .

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 3010TA

Figure 1-2: Model 3010TA Rear Panel

• Power Connection Universal AC power source.

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

range ID. 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 3010TA is accurate to 2-3 %. Accordingly, internally
scheduled calibrations can vary 2-3 % per day.

Part I: 1-5

1 Introduction Model 3010TA

1-6: Part I

Oxygen Anal yzer Part I: Control Unit

Operational Theory

2.1 Introduction

The Model 3010TA 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
3010TA 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 3010TA 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 3010TA

Figure 2-1: Block Diagram of the 3010TA 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 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 4-20 mA dc and the 0-1 V 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 3010TA

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 3010TA 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.

Part I: 3-1

3 Installation Model 3010TA

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

3-2: Part I

Oxygen Anal yzer Part I: Control Unit

open when the button in the center of the latch (upper right corner) is pressed
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 7.125 inches. See Figure 3-3.

Figure 3-3: Required Front Door Clearance

3.3 Electrical 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 at 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 3010TA

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
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:

I/O

switch on the front panel is for

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

0 V at 0 ppm to 1 V at full scale ppm. (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: Current increases linearly with increasing oxygen,

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

4–20 mA dc Range ID: 8 mA = Low Range, 12 mA = Medium Range, 16

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

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 fail-safe or non-fail-safe.

• 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 fail-safe or non-fail-safe.

• 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 fail-safe 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 3010TA

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 ppm or percent

• The range in use (HI, MED, LO)

• The span of the range (0-100 ppm, 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.
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 3010TA

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

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

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 Models 3010 are split architecture

(dual-chassis) instruments, which have a Remote Probe, or Analysis Unit.
The Remote Probe connector is used for controlling the Analysis Unit
internal sample, zero, and span gas valves, 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. (See drawing D-64950 for wire recommendations.)

3-8: Part I