Oxygen Transmitter
Model 1732
Operators Manual
February 2015
TABLE OF CONTENTS
1. USING THIS MANUAL ................................................................................................................................. 3
1.1 CAUTIONS .................................................................................................................................................. 3
1.2 WARNING SYMBOLS ................................................................................................................................... 4
2. INTRODUCTION ........................................................................................................................................... 5
3. DEVICE SPECIFICATIONS .......................................................................................................................... 7
3.1 HARDWARE SPECIFICATIONS ....................................................................................................................... 7
3.2 OPERATIONAL SPECIFICATIONS ................................................................................................................... 8
3.2.1 SCALING OF ANALOG OUTPUTS CHANNEL #1 AND CHANNEL #2 ............................................................. 8
3.2.2 LOCAL DISPLAY OF PROCESS VARIABLES .............................................................................................. 8
4. DISPLAY AND KEYPAD .............................................................................................................................. 9
4.1 RUN MODE DISPLAY ................................................................................................................................... 9
4.2 OXYGEN DISPLAY ..................................................................................................................................... 10
4.3 KEYPAD ................................................................................................................................................... 11
4.3.1 KEYPAD IN RUN MODE ....................................................................................................................... 11
4.3.2 KEYPAD IN THE SETUP MENU ............................................................................................................. 12
4.3.3 INFORMATION SCREEN ....................................................................................................................... 13
5. SETUP MENU ............................................................................................................................................. 15
5.1 SETUP MENU FUNCTION SUMMARY ........................................................................................................... 15
5.2 SETUP MENU DISPLAY .............................................................................................................................. 15
5.3 SETUP MENU FUNCTIONS ......................................................................................................................... 16
5.3.1 PROBE 1 & PROBE 2 OFFSET ............................................................................................................. 16
5.3.2 LOWER LINE ITEMS ............................................................................................................................ 16
5.3.3 OXYGEN DISPLAY UNITS .................................................................................................................... 17
5.3.4 DAMPING FACTOR .............................................................................................................................. 17
5.3.5 PROCESS ALARMS ............................................................................................................................. 17
6. ALARMS ..................................................................................................................................................... 19
6.1 CHECKING AND ACCEPTING AN ALARM ...................................................................................................... 20
6.1.1 CURRENT ALARMS ............................................................................................................................. 20
6.1.2 ALARM LOG ....................................................................................................................................... 21
6.2 ALARM RELAYS ........................................................................................................................................ 21
6.3 COMMON ALARMS .................................................................................................................................... 22
6.4 SELECTABLE PROCESS ALARMS ................................................................................................................ 23
6.5 WARNING MESSAGES ............................................................................................................................... 23
7. GAS CALIBRATE AND PURGE ................................................................................................................ 25
7.1 ACTIONS THAT OCCUR WHEN THE GAS SOLENOID BUTTONS ARE PRESSED ................................................. 26
8. INDEX .......................................................................................................................................................... 27
February 2015 Operators Manual
1732 Oxygen Transmitter 1
Copyright NOVATECH CONTROLS PTY LTD — 2015
This manual describes the transmitter firmware version 1.29, February 2015
Neither the whole nor any part of the information contained in, or t he product described in, this manual may
be adapted or reproduced in any material form except with the prior written approval of Novatech Controls
Pty Ltd (Novatech).
The product described in this manual and products for use with it are subject to continuous developments
and improvement. All information of a technical nature and particulars of the product and its use (including
the information in this manual) are given by Novatech in good faith. However, it is acknowledged that there
may be errors or omissions in this manual. A list of details of any amendments or revisions to this manual
can be obtained upon request from Novatech Controls Technical Enquiries. Novatech Controls welcome
comments and suggestions relating to the produ ct and this manual.
All correspondence should be addressed to: Technical Enquiries
Novatech Controls Pty Ltd
309 Reserve Road, Tel: +61 3 9585 2833
Cheltenham Fax: +61 3 9585 2844
Victoria 3192 Email: info@novatech.com.au
Australia Web site: http://www.novatech.com.au/
Novatech Controls or their authorised dealers should carry out all maintenance and service on the product.
Novatech Controls can accept no liability whatsoev er for any loss or damage caused by service or
maintenance by unauthorised personnel. This manual is intended only to assist the reader in the use of the
product, and therefore Novatech Controls shall not be liable for any loss or damage whatsoever arising from
the use of any information or particulars in, or any error or om i ssion in, this manual, or any incorrect use of
the product.
Operators Manual February 2015
2 1732 Oxygen Transmitter
1. USING THIS MANUAL
This manual is a shortened version of the 1732 Oxygen Transmitter product manual to be used by the
operator. It does not cover the commissioning, calibration or servicing of the 1732 Oxygen Transmitter. If
more detailed information is required than what is provided in this manual please refer to the more detailed
1732 Oxygen Transmitter Technical Manual. B oth manuals are supplied with each transmitter and are also
available to download at the Novatech Controls website.
http://www.novatech.com.au/1732
It is assumed in this manual that the transmitter has been installed by qualified personal and that the wiring
to the main power supply, the oxygen probe and all the associated signal devices complies with the local
safety codes and regulations.
1.1 Cautions
Please read the safety information below before co nnecting power to the transmitter.
CAUTION 1
The probe heater is supplied with MAINS VOLTAGE. This supply has electrical shock danger to
maintenance personnel. Always isolate the transmitter before working with the probe.
The EARTH wire (green) from a heated probe must ALWAY S be connected to earth.
CAUTION 2
Combustion or atmosphere control systems can be dange rous. Burners must be mechanically set up so th at
in the worst case of equipment failure, the system cannot generate explosive atmospheres. This danger is
normally avoided with flue gas trim systems by adju stment so that in the case of failure the appliance will not
generate CO in excess of 400 ppm in the flue. The CO level in the flue should be measured with a separate
CO instrument, normally an infrared or fuel cell t ype.
CAUTION 3
The oxygen probe is heated to over 700°C/1290°F and is a source of ignition. Since raw fuel leaks can
occur during burner shutdown, the transmitter has an interlocking relay that removes power from the probe
heater when the main fuel shut-off valve power is off. If this configuration does not suit or if it is possible for
raw fuel to come into contact with a hot oxygen probe then t he M odel 1732 transmitter with a heated probe
will not be safe in your application.
An unheated probe can be utilised in such application s, however the oxygen readings are valid only above
650°C/1200°F.
CAUTION 4
The reducing oxygen signal from the transmitter and the associated alarm r el ay can be used as an explosive
warning or trip. This measurement assumes complete combustion. If incomplete combustion is possible
then this signal will read less reducing and should not be used as an alarm or trip. A true excess
combustibles analyser, normally incorporating a c atalyst or thermal conductivity bridge, would be more
appropriate where incomplete combustion is possible.
Also read the probe electrical shock caution in the pro be heat er interlock caution in chapter 4.7 of the Model
1732 Technical Manual.
CAUTION 5
FIL-3 filter. If the optional FIL-3 has been fitted to the 1231 probe in this installation, please read the
Important Notice in the Technical Manual.
February 2015 Operators Manual
1732 Oxygen Transmitter 3
1.2 Warning Symbols
Danger, high voltage. Risk of electrical shock.
Caution hot surface.
Caution, risk of danger. See additional informatio n
in the manual.
Operators Manual February 2015
4 1732 Oxygen Transmitter
2. INTRODUCTION
The Novatech 1732 Dual Probe Oxygen Transmitter is designed to measure the oxygen gas con cent ration in
combustion applications such as power station s and industrial boilers. The measurement is used to control
the air / fuel ration in the burner to maintain efficiency and safe operation conditions.
The 1732 Oxygen Transmitter is based on the well-known model 1632 transmitter. It includes a number of
hardware and software improvements such as a gra phic display, larger characters, faster microprocessor,
simplified set up menu, alarm logging, faster probe heater control and more calculated values such as burner
efficiency.
The 1732 Oxygen Transmitter has a variety of user-selectable functions. They are simple to use because
each selection is menu driven. For options you are not sure about, read the manual on that particular item in
chapter 5, Setup Menu.
Features include:-
Inputs
Two zirconia oxygen probe, heated or unheated
Oxygen range from 1 x 10
-30
to 100%
Furnace, kiln or flue thermocouple, field selectable as type K, J, R or S
Main flame established safety interlock (for heated probes only)
Purge flow switch
Outputs
Two linearised 4-20mA or 0-20mA DC isolated outputs, max. load 1000Ω
The output function and the range are field selectabl e
Common alarm relay (programmable)
Three other alarm relays with selectable functions
Computer
RS 232 or RS 485 for connection of a computer terminal or printer for diagnostics of the transmitter, probe or
combustion process. This connection is suitable f or network connection to a computer, DCS or PLC using
MODBUS protocol.
Display
Multi font graphical display
Large characters for the oxygen on the top line
Multiple lower line items for the secondary functions. i e P robe temperature, % Oxygen for the second probe
Alarm display mode that shows the time the alarm occurred and the acceptance time
Alarm log mode that keeps the time the alarm occurred, the acceptance time and the time the alarm was
cleared for the last 4,000 alarms
Power
Universal mains supply voltage, 100 to 240VAC
Automatically detects the mains voltage and freque ncy and set the power control accordingly
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1732 Oxygen Transmitter 5
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Operators Manual February 2015
6 1732 Oxygen Transmitter
3. DEVICE SPECIFICATIONS
3.1 Hardware Specifications
Number of Oxygen Probes:
1 or 2
Oxygen Range:
1 x 10-30 to 100%
Oxygen Accuracy:
±1% of actual measured oxy gen value with a repeatability of ±0.5% of the
measured value
Thermocouple Types:
Type K and J
Temperature Accuracy:
±2°C
Analog Outputs:
0-20mA or 4-20mA field selectable
Active Outputs
(WARNING: DO NOT LOOP POWER OUTPUTS. Use only passive receivers for commissioning and
testing. The use of loop powered receivers will damage the output)
Output Load:
1000 ohm max
Alarm Relays:
4
Alarm Relay Contacts:
2A 240VAC, 2A 30VDC
Reinforced insulation when used with mains voltage
(WARNING: Do not use both mains voltage and low voltage connections to adjacent alarm contacts)
Mains Voltage Supply:
100 to 240VAC 50/60 Hz
Reinforced insulation
Overvoltage:
Category II (IEC60364-4-443)
Power:
5 Watts for controller plus probe power
530W max., 25% duty cycle each probe on 240VAC
110W max., 100% duty cycle each probe on 110VAC
576W (2.4A) max
Environmental Rating:
Operating Temperature -25°C to 55°C
Relative Humidity 5% to 95% (non-condensing)
Altitude
2000m Maximum
Degree of Protection:
IP65
IP54 with internal reference air pump
Case Size:
315mm (12.4”) wide, 190mm (7.5”) high, 110mm (4.3”) deep
Case Weight:
3 Kg (6.6 lbs.)
WARNING: All signal level connections onto the transmitter must be treated as safety extra-low
voltage (SELV) as defined in the standard IEC61140. Double insulation must be used when
connecting these terminals to systems that might carry high voltage.
February 2015 Operators Manual
1732 Oxygen Transmitter 7
3.2 Operational Specifications
3.2.1 Scaling of Analog Outputs Channel #1 and Channel #2
Function
Min Range
Max Range
Linear oxygen
1%
0 to 100%
Very Low Oxygen
10ppm
0 to 2%
Average oxygen
1%
0 to 100%
Logarithmic oxygen
0.1
20% Fixed**
Reducing oxygen
2 decades
1x10
-30
% to 100%
Oxygen deficiency
-10 to 0%
-10 to 20%
Auxiliary TC Temperature
100°C
0 to 1600°C
Combustibles
0.5%
0 to 2.0%
Burner efficiency
20.0%
0 to 100.0%
No Output
** For Logarithmic Oxygen scaling see the appendices in the 1732 Technical Manual
Output Channel 2 is independently isolated and sepa rately scaled with the same options as analog Output
Channel 1.
For configurations in which one oxygen probe is used both channels transmit Oxygen process variables
based on that probe. For configurations with two oxygen probes Channel 1 outputs process variables
related to oxygen probe 1 and Channel 2 outputs process variables related to probe 2.
3.2.2 Local Display of Process Variables
Process Variable
Range
Notes
Probe 1/2 Oxygen
1x10
-30
to 100%*
Probe 1 is displayed always,
probe 2 is displaued if the
transmitter is configured for dual
probe
Average Oxygen
1x10
-30
to 100%
Probe 1/2 Temperature
-30 to 1760°C (3200°F)
Probe 1/2 EMF
-40 to 1350mV
Probe 1/2 Impedance
0.0 to 300.0kohm
Aux Thermocouple Temperature
-30 to 1760°C (3200°F)
Requires an Aux TC
Ambient Temperature
-25 to 80°C (175°F)
Ambient Relative Humidity
5 to 95%
Max Theoretical Dry CO
0 to 40.0%
Combustibles
0 to 2.0%
Burner Efficiency
0 to 100.0%
*Oxygen display units automatically default to % range above 10,000ppm (1%)
The oxygen deficiency output can be used in the same way as a c ombustibles analyser to signal the extent
of reducing conditions of combustion processe s.
Operators Manual February 2015
8 1732 Oxygen Transmitter
4. DISPLAY AND KEYPAD
The 1732 Oxygen Transmitter has a graphic display, 8 buttons and 5 LED indicators to show the stats of t he
transmitter.
All of the buttons have multiple functions, depending on what is currently on the display. As a general
starting point, the larger white text on the button is the function while the transmitter is in the Run Mode and
the smaller black text on the button is the function in the Setup Menu.
When the transmitter is sitting idle it will revert to Run Mode, in which standard information relating to the
process appears on the screen. In order to configure the t ransmitter the operator must access Set up M enu.
This is achieved by pressing the S
ETUP button. The transmitter will return back to the Run Mode when the
S
ETUP button is pressed again or after a period of 60 seconds of inactivity.
The front panel of the 1732 Oxygen Transmitter
4.1 Run Mode Display
In Run Mode the 1732 shows the first oxygen probe measurem ent in large characters at the top of the
display and a user selectable lower line in smaller ch aracters below. Other items on the display include the
activity heartbeat indicator in the top right corner, a row of sin gl e letter action indicators in the bottom left
corner and the current time in the bottom right corner.
Power Indicator
Activity Information Indicators:
B Burner input enabled (terminals 11&12)
A The transmitter is performing an automatic
ADC calibration.
T (flashing) One or more oxygen probes is
below operating temperature (650°C / 1200°F)
Z The transmitter is performing a probe
impedance check.
Probe 1 Oxygen
Lowerline secondary
process variable
Current time
12.25%
Probe 1 Temp 720.3 C
Heartbeat Indicator
February 2015 Operators Manual
1732 Oxygen Transmitter 9
4.2 Oxygen Display
The oxygen measurement is displayed on the top line of the transmitter. It can be scaled in either % or ppm
(see chapter 5.3.3 Oxygen Display Units).
If “Oxygen %” is selected in Setup Menu #04 the transmitter will maint ai n the best resolution available. The
display will show oxygen in the following format –
Range Display format
30.0% to 100.0% ###.# % ( 1 digit after the decimal )
1.00% to 29.99% ##.## % ( 2 digits after the decimal )
0.100% to 0.999% 0.### % ( 3 digits after the decimal )
< 0.100ppm scientific notation (#.## x 10
- ##
% )
If “Oxygen ppm” is selected in Setup Menu #04 the transmitter will show the oxygen in ppm format between
10 and 9,999ppm.
Outside this range the oxygen will be shown in % format.
The show oxygen in the following format –
Range Display format
>10,000ppm % format (see above)
1,000 to 9,999ppm #,### ppm
100 to 999.9ppm ###.# ppm ( 1 digit after the decimal)
10 to 99.99ppm ##.## ppm ( 2 digits after the decimal)
<10ppm scientific notation (#.## x 10
- ##
% )
Operators Manual February 2015
10 1732 Oxygen Transmitter
4.3 Keypad
There are 8 buttons built into the label on front panel of the 1732 Oxygen Transmitter. The button functions
are written in BLACK and WHITE to identify the function of the button in either Run Mode or the Setup Menu
system.
Button Text
Run Mode (white text)
Setup Menu (black/blue text)
1
S
ETUP / RUN
Enter Setup Menu
Return to Run Mode
2
DISPLAY / FUNCTION ∆
D
ISPLAY NEXT LOWER LINE ITEM
N
EXT FUNCTION
3
D
ISPLAY / FUNCTION ∇
Display last Lower line Item
Previous function
4
ALARM / OPTION ∆
Next alarm
Next / increment option
5
A
LARM / OPTION ∇
Previous alarm
Previous / decrement option
6
A
LARM ACCEPT / ENTER
Acknowledge displayed alarm
Save current option
7 GAS 1 PURGE 1 / SENS IMP
Gas 1 / Purge 1 manual
activate
Check Probe impedance
8 GAS 2 PURGE 2 / AUTO CAL
Gas 2 / Purge 2 manual
activate
Manually perform device
calibration
4.3.1 Keypad in Run Mode
After the transmitter is powered on and has completed the initial startup procedure it will enter the Run Mode.
In this mode the top line of the display will show the oxy gen m easurement from probe 1. The other button
functions are –
S
ETUP / RUN
By pressing this button once from Run Mode the transmitter will enter the Setup Menu system. In the Setup
Menu the function of each of the buttons is reassigned. P ressi ng the S
ETUP / RUN button a second time
while in the Setup Menu will return the transmitter to the Run M ode. If the transmitter is left idle in the Setup
Menu for more than 60 seconds it will automatically return to Run Mode.
DISPLAY ∆ / DISPLAY ∇
The display buttons are used to scroll the lower line up and down through the variety of measurements that
are available on the lower line. For a complete list of options see chapter 5.3.2 Lower Line Items.
ALARM ∆
If there is either a new alarm or an active alarm the ALARM ∆ button can be pressed to examine the alarm
status. The Alarm Light will be flashing if there is a new alarm or steady if there is an existing alarm. (see
Chapter 6. Alarms). The Setup Light will flash slowly to show that the transmitter is now in the al arm display
mode.
Setup Light
Alarm Light
Cal / Purge Lights
1
2 34
5
6
8
7
February 2015 Operators Manual
1732 Oxygen Transmitter 11
ALARM ∇
When the transmitter is displaying active alarms (the ALARM ∆ button has been pressed), the ALARM ∆ button
and A
LARM ∇ button allow the operator to examine the date / ti m e of the alarm and the date / time that the
alarm was acknowledged.
ALARM ACCEPT
Press this button to acknowledge the currently displayed alarm (see Chapter 6. Alarms).
GAS 1 / PURGE 1 GAS 2 / PURGE 2
These two buttons are used to turn on the gas / purge solenoids. When the transmitter is in the manual cal /
purge mode (Commissioning Menu function #23/32) the solenoid will be activated for as long as the button is
pressed. When the transmitter is in the auto cal / purge mode the automatic cal / purge cycle is started. The
cycle can be stopped by pressing the same button again. (see Chapter 7. Gas Calibrate and Purge)
4.3.2 Keypad in the Setup Menu
From Run Mode, if the SETUP / RUN button is pressed once, the tra nsmitter will display the Setup Menu. For
information about accessing the Commissioning M enu or Calibration Menu see the 1732 Technical Manual.
The following functions are then available in the Setup M enu.
S
ETUP / RUN
Pressing this button while in the Setup Menu will return the transmitter to the Run Mode.
FUNCTION ∆ / FUNCTION ∇
These two buttons allow the selection of the Setup Menu f unction. A function summary table is found at the
start of Chapter 5.1 Setup Menu.
OPTION ∆ / OPTION ∇
These two buttons allow for modifying the option for th e selected function. A list/range of options for each
function is found in Chapter 5.3.
ENTER
This button applies/updates the currently display ed option and stores the value in non-volatile memory to be
retrieved on device start up. If this button is not pres sed before changing to a new function then the previous
option will be retained.
S
ENS IMP
When this button is pressed the transmitter will measu re t he im pedance of oxygen probe(s) attached to the
transmitter. If the burner is not enabled (terminals 10 & 11) or the probe temperature is below 700°C
(1292°F) impedance checking will not be performed. During impedance checking a ‘Z’ will be seen in the
bottom left hand corner of the display.
A
UTO CAL
When this button is pressed the transmitter will calibr ate the analog output channels that are set to auto
calibration. This is performed by directing the out put current away from the output terminals (terminals 12
&13 and 14 & 15) and back the current back into the transmitter input. The transmitter will then calculate a
zero and a span calibration factor for each of the output channels. The output calibration will only happen if
the channel is not set to manual output calibration. (see 1732 Technical Manual for more details)
During this process normal output to the analog channels will be interrupted sending the outputs open circuit.
Operators Manual February 2015
12 1732 Oxygen Transmitter
4.3.3 Information Screen
The 1732 Oxygen Transmitter has an information screen available to the user to allow more detailed
information about the running of the transmitter t o be easily read by the user.
The information available is:
1. Model and version of the current firmware
2. The date/time that the firmware was compiled
3. The maximum temperature that the transmitter has measured inside the cabinet
4. Current date and time
5. The time of all the next timed events (Impedance test, cal/purge 1, cal/pu rge 2)
6. ADC calibration data (analogue input calibration)
7. DAC calibration data (analogue output calibration)
8. Probe temperature record (probe 1 and 2)
The information screen is accessed from the Run Mode by pressing and holding the A
LARM ACCEPT button
and then pressing the S
ETUP / RUN button. The first data appears at the top of the screen and there is a
scroll bar down the left hand side. The data can be scrolled through by using the D
ISPLAY ∆ and DISPLAY ∇
buttons. The data is for reference only and cannot be cha nged.
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1732 Oxygen Transmitter 13
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Operators Manual February 2015
14 1732 Oxygen Transmitter
5. SETUP MENU
This chapter describes the functions available in the Setup Menu on the 1732 Oxygen Transmitter.
The Setup Menu is mode is accessed from Run Mode by pres sing the S
ETUP button momentarily so the
words ‘Setup Menu’ appear at the bottom of the displa y. The transmitter will return to the Run Mode when
the S
ETUP button is pressed again or after 60 seconds of keypad inactivity .
5.1 Setup Menu Function Summary
When the transmitter is in the Setup Menu the SETUP light will be lit. The following table shows the Setup
Menu menu functions:
Menu
Function Description
Range
Default Value
01
Probe 1 Offset
±6.0mV
0.0mV
02
Probe 2 Offset
±6.0mV
0.0mV
03
Lower Line Items
see chapter 5.3.3 Oxygen Display Units
04
Oxygen Display Units
Oxygen % / Oxygen ppm
Oxygen %
05 Damping Factor
No Damping, to 10
Samples Averaged
5 Samples
06
Process Alarms
Enabled / Disabled
Disabled
5.2 Setup Menu Display
The purpose of having an interactive Setup Menu is to all ow f or configuration of the transmitter using the
graphical display and keypad.
Once an option is changed and entered using the E
NTER button that value immediately becomes active. The
device configuration and calibration is stored into the non-volatile memory and will be retained permanently
even if the device does not have power.
To change an option in the Setup Menu system:
1. Enter the Setup Menu by pressing the SETUP / RUN button once. The Setup Light will come on and
the display will have the format shown below. The operations of the buttons are now the operations
written in WHITE on the keypad. The menu name is written at the bottom of the display.
2. While in the Setup Menu the required function can be selected by using the F
UNCTION ∆ and
FUNCTION ∇ buttons. The options available for that function can be see n by using the OPTION ∆ and
O
PTION ∇ buttons.
3. When the required option is on the display press the E
NTER button to save that value.
When finished, press the S
ETUP / RUN button to return to the Run Mode.
Power indicator
Function Number
Selected Option
Activity Indicator:
A Autocal active
Z Probe impedance
check active
Function Name
Verification that the
selected option has
been saved
Menu name
01
Probe 1 Offset
+0.0 mV
Saved
A Setup Menu
February 2015 Operators Manual
1732 Oxygen Transmitter 15
5.3 Setup Menu Functions
5.3.1 Probe 1 & Probe 2 Offset
Options: ±6.0mV in 0.1mV increments
Default: 0.0mV
Each Novatech oxygen probe has an offset calibration value printed on a tag that is attached to the probe
when it is dispatched. To achieve the most accurate meas urement of oxygen the offset value must be
entered into this setup function with the same polarit y as it is printed on the label. For a healthy probe the
offset value should be within ±1.0mV.
NOTE: An offset of 1.0mV will change the oxygen reading by approximately 1% oxygen when the probe is in
ambient air. However, as the process oxygen measurement drops, this offset will have a diminishing effect.
At a process gas oxygen concentration of 2%, the 1.0mV of fset error will only change the reading by 0.1%
oxygen. If in any doubt about the correct offset value, set it to 0.0mV.
The function ’Probe 2 Offset’ will only appear if the transmitt er has been configured for 2 oxygen probes.
5.3.2 Lower Line Items
This function allows the operator to change the items t hat are available to be displayed on the lower line of
the transmitter in Run Mode. If the word “Enabled” appears on t he display for a selected lower line option,
the measurement will be available to be shown on the di splay in the Run Mode by scrolling through the list
using the D
ISPLAY ∆ and DISPLAY ∇ buttons.
Each individual lower line measurement can be enabled or disabled by pressing the E
NTER button.
OPTIONS:
Temperature, Probe #1 *
Oxygen Deficiency, Probe #1
Temperature, Probe #2 *
Oxygen Deficiency, Probe #2
Sensor EMF, Probe #1 *
Combustibles, Probe #1
Sensor EMF, Probe #2 *
Combustibles, Probe #2
Sensor Impedance, Probe #1 *
Carbon Dioxide, Maximum Dry, Probe #1
Sensor Impedance, Probe #2 *
Carbon Dioxide, Maximum Dry, Probe #2
Oxygen, Probe #2 *
Boiler Efficiency1
Oxygen, Average Probe 1 and Probe 2 *
Flue Pressure
Auxiliary TC Temperature
Burner Run Time
Ambient Temperature *
Service Date
1
Requires “Single Probe” and “Aux TC Type” to be set
03
Lower Line Items
Probe 1 EMF
Enabled
Setup Menu
01
Probe 1 Offset
+0.0 mV
Saved
Setup Menu
Operators Manual February 2015
16 1732 Oxygen Transmitter
5.3.3 Oxygen Display Units
Options: Oxygen % / Oxygen ppm
Default: Oxygen %
The top line of the display that shows the oxygen measu rement can be displayed in either % or parts per
million (ppm)
5.3.4 Damping Factor
Options: No Damping
1 to 10 Samples Averaged
Default: 5 Samples
The oxygen measurement can be damped by averaging successive readings from the probe. This can be
used to smooth out fluctuations in the process gas level and should improve stability of the readings of the
system The larger the number selected here, the more successive readings are averaged and the smoother
the measurement will be.
The damping factor is not applied to the Probe EMF a nd Probe Temperature values used to calculat e
oxygen, but to the oxygen value itself. The pre-dam ped oxygen value is not displayed or retransmitted via
digital or analog outputs, when damping is enabled the dampe d oxygen value is shown on the local display
as well as being retransmitted via digital or analog out puts.
5.3.5 Process Alarms
Options: Enabled / Disabled
Default: Disabled
This function allows the operator to “Disable” process alarms. Configuration of the process alarms is not
covered in this manual, please refer to the 1732 Technical Manual for details
06
Process Alarms
Disabled
Saved
Setup Menu
05
Damping Factor
5x Samples
Saved
Setup Menu
04
Oxygen Display Units
Oxygen %
Saved
Setup Menu
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Operators Manual February 2015
18 1732 Oxygen Transmitter
6. ALARMS
The 1732 Oxygen Transmitter has 4 alarm relays, a built i n al arm annunciator and an alarm log. When an
alarm occurs, the Alarm Light will flash. To find out w hat the alarm is, press the A
LARM ∆ button.
When the ALARM ∆ button has been pressed, the transmitter goes i nto the Alarm Display Mode. In this mode
some of the buttons take on a different function.
Button text
Run Mode
Alarm Mode
S
ETUP / RUN
*
Return to Run Mode
D
ISPLAY / FUNCTION
∆
*
Next alarm
D
ISPLAY / FUNCTION
∇
*
Last alarm
A
LARM / OPTION
∆
Enter Alarm Display Mode
Alarm activated time
A
LARM / OPTION
∇
Enter Alarm Log Mode
Alarm acknowledged time
A
LARM ACCEPT / ENTER
*
Acknowledge alarm
G
AS 1 PURGE 1 / SENS IMP
* * G
AS 2 PURGE 2 / AUTO CAL
*
*
* This button is not used in the Alarm Display Mode
When the Alarm Mode has been entered, the Setup Light flashes once a second. The transmitter will return
to Run Mode if the SETUP / RUN button is pressed a second time, or after 60 seconds of keypad inactivity.
All relays have fail-safe alarm contacts. That is –
When the transmitter is powered off the contacts are open circuit
When the transmitter is powered on but there are no alarms the contacts will be closed
When there is a current unaccepted alarm event the contacts will be open circuit
When there is a current accepted alarm event the state of the contacts will depend on the selection
in the Commissioning Menu #53. Refer to the 1732 Technical Manual for details.
All alarms drive the alarm light on the front door.
The light will be off if there are no alarms current
The light will flash if there is a current alarm that has not been acknowledged
The light will be on steady if there are current alarm(s) that have not been cleared
The light will flash faster as more alarms occur
February 2015 Operators Manual
1732 Oxygen Transmitter 19
6.1 Checking and Accepting an Alarm
When a new alarm occurs, either a process alarm or an alar m that will appear in the common alarm list, the
Alarm Light will flash quickly. The more new alarms there are, the faster the light will flash.
To check the cause of the alarm –
1. Press the A
LARM ∆ button. This will put the transmitter into the current alarm mode. The Setup Light
will flash.
2. The alarm screen will appear displaying the cause of the alar m on the top line.
3. Press the A
LARM ACCEPT button to accept the alarm.
4. Press the O
PTION ∆ button to see the next active alarm or the OPTION ∇ button to see the previous
active alarm.
5. When all the new alarms have been ACCEPTED the Alarm Light will stop flashing.
6. Accept each alarm and then press the SETUP / RUN button to return t o the Run Mode
6.1.1 Current Alarms
To view the alarms that are still current press the ALARM ∆ button f rom the Run Mode and then use the
A
LARM ∆ and ALARM ∇ buttons to view all alarms. Use the DISPLAY ∆ and DISPLAY ∇ buttons to view the Time
Activated and the Time Accepted of each alarm.
Probe 2 TC Open/Ct
Time Activated
08 Mar 2006 03:45:29
Status Active
Alarm Description
Time title:
Time Activated
Time Accepted
Time Cleared
Time of the event
Alarm Status:
Active
Accepted
Self Cleared
Operators Manual February 2015
20 1732 Oxygen Transmitter
6.1.2 Alarm Log
The alarm log keeps a record of the alarm events after the cause of the alarm has been cleared. It will hold
a record of up to 4000 alarm events and will be retained even wit h the transmitter power off.
To view all the alarms that have occurred in the alarm log pre ss the A
LARM ∇ button from the Run Mode.
The display will look like this:
Use the O
PTION ∆ and OPTION ∇ to scroll through the alarm events that have been saved in the alarm log.
The alarm event will be transferred to the alarm log when the al arm has been cleared.
The alarms are stored in the alarm log in chronological order. However, it may be seen that the current
alarm number will skip some numbers. These numbers hav e been reserved for alarm events that are still
current. When the alarm cause has been removed, t hese alarm events will be transferred to the alarm log.
The alarms are stored in the alarm log in chronological order. However, it may be seen that the current
alarm number will skip some numbers. These numbers hav e been reserved for alarm events that are still
current. When the alarm cause has been removed, t hese alarm events will be transferred to the alarm log.
6.2 Alarm Relays
The common alarm relay is used to monitor faults within t he transmitter and the probe. The list of events t hat
will cause the common alarm relay to be activated is shown in chapter 6.3, Common Alarms. The relay
contacts will be open circuit if there is a current alarm conditi on. The contacts will close again when the
alarm has been acknowledged.
The other three alarm relays are user defined and are used to monitor the process. The function of the
process alarm relays is user selectable. See chapter 6.4 Selectable Process Alarms, and the 1732
Technical Manual for further information.
Probe 2 TC Open/Ct
Time Activated
08 Mar 2006 03:45:29
Alarm Log (0002/0057)
Alarm Description
Time title:
Time Activated
Time Accepted
Time Cleared
Time of the event
Number of the alarm being viewed /
Total number of alarms logged
February 2015 Operators Manual
1732 Oxygen Transmitter 21
6.3 Common Alarms
The events that drive the common alarm relay are –
1. ‘Probe 1 High Impedance’
2. ‘Probe 2 High Impedance’
Oxygen probe or electrode failure (high impedance). This alarm is inhibited when the probe temperature is
under 650°C/1200°F.
3. ‘Probe 1 Heater Fail’
4. ‘Probe 2 Heater Fail’
In the first 20 minutes of power being applied to the heater af ter being switched on, this alarm will not occur,
but a ‘T’ display will be shown on the bottom of the dis pl ay. If an ADC alarm occurs, the heaters will
automatically be turned off. If the probe has not reach ed 650°C/1200°F in 20 minutes the ‘Probe 1(2) Heater
Fail’ alarm will be raised.
5. ‘Probe 1 TC Open Circuit’
6. ‘Probe 2 TC Open Circuit’
Probe thermocouple is open circuit. The heater in heated probes will switch off.
7. ‘Auxiliary TC Open Circuit’
Stack thermocouple is open circuit. If the thermocouple is not needed, select “NO T/C” for “Aux TC Type” or
place a short circuit between terminals 7 & 8.
8A. ‘Reference Air Pump Fail’
The reference air pump in the transmitter is either discon nected or is drawing <20mA.
8B. ‘Reference Air Pump Overload
The reference air pump in the transmitter has drawn >300mA. The power will be turned off to the pump to
avoid damage to the pump driving circuit. The 1732 will attempt to restart the pump every minute. To force
a restart, disconnect the pump and reconnect it.
9. ‘ADC Calibration Fail’
The analog to digital converter has been found to fall outside the normal calibration specifications. In this
case the probe heater will automatically be turned off .
10. ‘Output 1 Failure’
11. ‘Output 2 Failure’
The digital to analog and voltage isolator circuit ha s been found to fall outside the normal calibration
specifications. This check is only performed when the ‘AUTO CAL’ button is pressed.
12. ‘BBRAM Fail’
All of the setup options are held in the battery backed memory (B BRAM). This is the battery shaped device
at the bottom centre of the 1730-1 PCB labeled MEM1. Thi s alarm will occur when this device fails and will
need to be replaced.
13. ‘Heater 1 SSR Failure’
14. ‘Heater 2 SSR Failure’
15. ‘Heater SSR Leakage’
The 1732 has the ability to monitor the operation of the heater current. As a result, the transmitter will give
an alarm within 1 second of a heater power control switch (Solid State Relay) failure. If either of the SSR’s
are found to be faulty, both heaters will be turned off i m m edi at el y and the alarm will be raised. The SSR
must be replaced. The ‘SSR Leakage’ alarm will occur i f one of the heater SSR’s are partly shorted.
If probe #1 SSR has failed and only one probe is being used, the 1732 Technical Manual describes how the
SSR for probe #2 can be selected instead. If 2 probes are being used but neither of the solenoid outputs are
being used consult the Technical Manual.
Operators Manual February 2015
22 1732 Oxygen Transmitter
16. ‘Probe 1 Filter Blocked’
17. ‘Probe 2 Filter Blocked’
Blocked probe filter. This test is only performed when automatic purging of the probe is selected. Refer to
the 1732 Technical Manual for further details. This alarm will not reset until the next purge cycle that can be
initiated manually or automatically, or the power to the transmi tter is turned off and back on.
18. ‘Gas 1 Calibration Error’
19. ‘Gas 2 Calibration Error’
This alarm will only be raised if the oxygen measurement during an automatic gas calibration check falls
outside the set gas % limits. This alarm will not reset until the next purge cycl e that can be initiated manually
or automatically, or the power to the transmitter is turned off and back on.
6.4 Selectable Process Alarms
There are three user configurable alarm relays. Any or all of the following functions can be selected for each
relay.
The description of how the trip levels and the delay times a re set is in the 1732 Technical Manual.
NOTE: The process alarms will only be activated if they are enabled in SETUP menu function 06.
20. ‘Oxygen 1 Very Low’
21. ‘Oxygen 2 Very Low’
The measured oxygen level on the indicated probe has be en below the trip level shown in setup function #07
for longer than the delay time shown in setup function #08.
22. ‘Oxygen 1 Low’
23. ‘Oxygen 2 Low’
The measured oxygen level on the indicated probe has been below the trip level shown in setup function #09
for longer than the delay time shown in setup function #10.
24. ‘Oxygen 1 High’
25. ‘Oxygen 2 High’
The measured oxygen level on the indicated probe h as been above the trip level shown in setup function
#11 for longer than the delay time shown in setup function #12.
26. ‘Oxygen Deviation’
The difference between the oxygen level measured on probe #1 and the oxygen level measured on probe #2
is greater than the trip level shown in setup function #13 and the time delay shown in setup function #14 has
expired.
6.5 Warning Messages
27. ‘Probe 1 Temperature Low’
28. ‘Probe 2 Temperature Low’
The probe temperature is under 650°C/1200°F. The oxy gen reading is therefore invalid. If the probe heater
has been on for more than 20 minutes and the temperatur e is less than 650°C/1200°F a ‘Probe 1(2) Heater
Fail’ alarm will occur. There will be a flashing ‘T’ symbol on the bottom left hand cor ner of the display until
the temperature of the probe(s) is over 650°C/1200°F.
NOTE: The ‘Probe 1(2) Temperature Low’ function is also used with unheated probes to show that the probe
temperature is below 650°C/1200°F when the process temperature falls below this level.
29. ‘Cal 1 in Progress’
30. ‘Cal 2 in Progress’
A calibration check is occurring, either manual o r automatic mode.
31. ‘Purge 1 in Progress’
32. ‘Purge 2 in Progress’
A probe purge is occurring, either manual or automatic mode.
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1732 Oxygen Transmitter 23
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Operators Manual February 2015
24 1732 Oxygen Transmitter
7. GAS CALIBRATE AND PURGE
The Novatech oxygen sensor that is used in the Novat ech ox ygen probe is extremely predictable, stable and
reliable. For this reason, the calibration of a Novatech ox ygen system does not require the use of calibration
gases.
However, all Novatech oxygen probes have a built in gas connection that does allow the accuracy of the
probe to be checked. This chapter describes the operation of this gas checking system. For further details
see the 1732 Technical Manual.
The 1732 has a timer and solenoid driving system that can be configured to admit a certified calibration gas
into the probe or an air supply to purge the probe filters throu gh the gas connection. Both the calibration gas
and the filter purge gas must be piped to the port on the probe labelled “CAL/PURGE”.
There are two solenoids drivers in the 1732 transmitter. They can be used for a v ariet y of combinations of
gas checking and probe purging functions. The available options depend on the way that the transmitter has
been configured.
Single Probe
Configuration
Gas 1 & Purge 2
Solenoid 1 should be connected to calibration gas and
Solenoid 2 should be connected to the purge gas
Gas 1 & Gas 2
Solenoid 1 should be connected to calibration gas #1 and
Solenoid 2 should be connected to calibration gas #2
Dual Probe
Configuration
Purge 1 & Purge 2
Solenoid 1 should be connected to the purge gas on probe #1 and
Solenoid 2 should be connected to the purge gas on probe #2
Gas 1 & Gas 2
Solenoid 1 should be connected to calibration gas #1 and
Solenoid 2 should be connected to calibration gas #2
The transmitter can also be configured to be in a MANUAL or AUTOMATIC purge and gas check mode.
The information on configuring the transmitter is cont ained in t he 1732 Technical Manual.
February 2015 Operators Manual
1732 Oxygen Transmitter 25
7.1 Actions that Occur when the Gas Solenoid Buttons are Pressed
Purge and
Gas check
mode
Number of
probes
Gas option
Automatic
Single
Gas 1 & Purge 2
Pressing the GAS 1/ PURGE 1 button will start the timed gas
check cycle on solenoid #1 to button #1
Pressing the GAS 2/ PURGE 2 button will start the timed filter
purge cycle on solenoid #2 to probe #1
Automatic
Single
Gas 1 & Gas 2
Pressing the GAS 1/ PURGE 1 button will start the timed gas
check cycle on solenoid #1 to probe #1
Pressing the GAS 2/ PURGE 2 button will start the timed gas
check cycle on solenoid #2 to probe #1
Automatic
Dual
Purge 1 & Purge 2
Pressing the GAS 1/ PURGE 1 button will start the timed filter
purge cycle on solenoid #1 to probe #1
Pressing the GAS 2/ PURGE 2 button will start the timed filter
purge cycle on solenoid #2 to probe #2
Automatic
Dual
Gas 1 & Gas 2
Pressing the GAS 1/ PURGE 1 button will start the timed gas
check cycle on solenoid #1 to probe #1
Pressing the GAS 2/ PURGE 2 button will start the timed gas
check cycle on solenoid #2 to probe #2
Manual
Single
Purge 1 & Purge 2
Pressing the GAS 1/ PURGE 1 button will turn on solenoid #1 to
purge probe #1 for as long as the button is pressed
Pressing the GAS 2/ PURGE 2 button will turn on solenoid #2 to
purge probe #1 for as long as the button is pressed
Manual
Single
Gas 1 & Gas 2
Pressing the GAS 1/ PURGE 1 button will turn on solenoid #1 to
pass calibration gas to probe #1 for as long as the button is
pressed
Pressing the GAS 2/ PURGE 2 button will turn on solenoid #2 to
pass calibration gas to probe #1 for as long as the button is
pressed
Manual
Dual
Purge 1 & Purge 2
Pressing the GAS 1/ PURGE 1 button will turn on solenoid #1 to
purge probe #1 for as long as the button is pressed
Pressing the GAS 2/ PURGE 2 button will turn on solenoid #2 to
purge probe #2 for as long as the button is pressed
Manual
Dual
Gas 1 & Gas 2
Pressing the GAS 1/ PURGE 1 button will turn on solenoid #1 to
pass calibration gas to probe #1 for as long as the button is
pressed
Pressing the GAS 2/ PURGE 2 button will turn on solenoid #2 to
pass calibration gas to probe #2 for as long as the button is
pressed
Refer to the person responsible for the commissioning to find out how the transmitter has been configured.
Operators Manual February 2015
26 1732 Oxygen Transmitter
8. INDEX
Alarms ............................................................................................................................................................................... 21
Alarms, Checking .............................................................................................................................................................. 22
Alarms, Common .............................................................................................................................................................. 24
Alarms, Process Enabling ................................................................................................................................................. 19
Alarms, Selectable ............................................................................................................................................................ 25
Alarms, Warning Messages .............................................................................................................................................. 25
Calibration, Gas Check ............................................................................................................................................... 14, 27
Computer ............................................................................................................................................................................ 7
Display, Run Mode ............................................................................................................................................................ 11
Display, Setup Menu ......................................................................................................................................................... 17
Inputs .................................................................................................................................................................................. 7
Keypad .............................................................................................................................................................................. 13
Lower Line Changes ......................................................................................................................................................... 18
Output Ranges .................................................................................................................................................................. 10
Outputs................................................................................................................................................................................ 7
Probe Offset ...................................................................................................................................................................... 18
Setup Menu ....................................................................................................................................................................... 17
Specifications - Hardware ................................................................................................................................................... 9
Specifications - Operational .............................................................................................................................................. 10
Units, Oxygen Display ....................................................................................................................................................... 19
Voltage, mains supply ......................................................................................................................................................... 9
Warnings ............................................................................................................................................................................. 5
February 2015 Operators Manual
1732 Oxygen Transmitter 27
DECLARATION OF CONFORMITY
Application of Council Directives: 2004/108/EC
2006/95/EC
Standards to which conformity is declared:
EN61010-1:2010 Safety Requirements for Electrical Equipment for Measurement,
Control and Laboratory Use.
EN50270:1999 Electromagnetic Compatibility – Electrical Apparatus for the
Detection and Measurement of Combustible Gases, Toxic Gases or
Oxygen
CFR47 FCC Part 15, Subpart B (Class A)
Electromagnetic Compatibility - Radiated and Conducted Emissions
AS60529:2004 Degree of Protection Provided By Enclosures (IP Code)
This product is manufactured in Australia unde r I SO9001:2008 quality systems and ISO14001:2004
environmental certification.
Manufacturer’s name: Novatech Controls Pty Ltd
Manufacturer’s address:
309 Reserve Road
Cheltenham VIC 3192
AUSTRALIA
Type of equipment:
Oxygen Transmitter
Model Number:
1730 Series Transmitter
1231 Oxygen Probe
1232 Oxygen Probe
1234 Oxygen Sensor
I hereby declare that the equipment specified herein conforms to the above
directive(s) and standards(s) in 2014.
Full Name: Douglas Rice
Position: R & D Manager
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