Novatech 1732 Operator's Manual
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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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
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