Novatech CONTROLS 1734 User manual

November 2009
Carbon Controller
Model 1734
Operators Manual

March 2009 Operators Manual
1734 carbon controller 1
TABLE OF CONTENTS
TABLE OF CONTENTS.................................................................................................................................... 1
1. USING THIS MANUAL ................................................................................................................................. 3
1.1 CAUTIONS.................................................................................................................................................. 3
1.2 CONNECTING THE CONTROLLER TO THE POWER SUPPLY ............................................................................. 4
1.3 MOUNTING POSITION OF THE CONTROLLER ................................................................................................. 4
1.4 WARNING SYMBOLS ................................................................................................................................... 4
2. INTRODUCTION........................................................................................................................................... 5
3. SPECIFICATIONS......................................................................................................................................... 7
3.1 HARDWARE SPECIFICATIONS....................................................................................................................... 7
3.2 OPERATIONAL SPECIFICATIONS................................................................................................................... 8
3.3 HEATER INTERLOCK RELAYS....................................................................................................................... 9
4. DISPLAY AND KEYPAD ............................................................................................................................ 11
4.1 DISPLAY................................................................................................................................................... 11
4.2 KEYPAD ................................................................................................................................................... 12
4.2.1 KEYPAD IN RUN MODE ...................................................................................................................... 12
4.2.2 KEYPAD IN SETUP MODE.................................................................................................................... 13
4.2.3 INFORMATION SCREEN....................................................................................................................... 13
5. SETUP MODE............................................................................................................................................. 15
5.1 SETUP MODE FUNCTION SUMMARY........................................................................................................... 15
5.2 SETUP MODE DETAILS.............................................................................................................................. 15
5.2.0 TO CHANGE AN OPTION IN THE SETUP MENU ...................................................................................... 15
5.2.1 PROBE 1&PROBE 2OFFSET ............................................................................................................. 16
5.2.2 LOWER LINE ITEMS ............................................................................................................................ 16
5.2.4 DAMPING FACTOR.............................................................................................................................. 17
5.2.5 PROCESS ALARMS............................................................................................................................. 17
5.2.6 CARBON CONTROLLER....................................................................................................................... 17
5.2.3 CARBON SET POINT........................................................................................................................... 18
5.2.6 HIGH CARBON ALARM &ALARM DELAY............................................................................................... 18
5.2.7 LOW CARBON ALARM &ALARM DELAY................................................................................................ 19
5.2.8 CARBON DEVIATION ALARM &ALARM DELAY....................................................................................... 19
6. ALARMS ..................................................................................................................................................... 21
6.1 CHECKING AND ACCEPTING AN ALARM ...................................................................................................... 21
6.1.1 CURRENT ALARMS............................................................................................................................. 22
6.1.2 ALARM LOG....................................................................................................................................... 22
6.2 ALARM RELAYS ........................................................................................................................................ 22
6.3 COMMON ALARMS .................................................................................................................................... 22
6.4 SELECTABLE PROCESS ALARMS................................................................................................................ 24
6.5 WARNING MESSAGES............................................................................................................................... 24
7. PROBE PURGE.......................................................................................................................................... 25
7.1 NOTES ON PURGING THE PROBE................................................................................................................ 25
7.2 ACTIONS THAT OCCUR WHEN THE GAS SOLENOID KEYS ARE PRESSED....................................................... 26
8. UPDATING THE SOFTWARE.................................................................................................................... 27
9. INDEX.......................................................................................................................................................... 28

Operators Manual November 2009
21734 carbon controller
©Copyright NOVATECH CONTROLS PTY LTD — 2009
This manual describes the controller firmware version 1.00, November 2009
Neither the whole nor any part of the information contained in, or the 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 product and this manual.
All correspondence should be addressed to: -
Technical Enquiries
Novatech Controls Pty Ltd
309 Reserve Road, Tel: [phone]
Cheltenham Fax: [phone]
Victoria 3192 Email: [email protected]
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 whatsoever 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 omission in, this manual, or any incorrect use of
the product.

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1734 carbon controller 3
1. USING THIS MANUAL
This manual is intended to be used by the operator. It is not intended to describe how the 1734 carbon
controller should be connected, configured or serviced. If more detailed information is required than is
shown in this manual the 1734 Technical Manual should be used. This is supplied with each controller and
is also available on the Novatech web site at www.novatech.com.au
It is assumed in this manual that the controller has been installed by competent personal and that the wiring
to the main power supply, the carbon 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 connecting power to the controller.
CAUTION
Please note that if this equipment is not installed and used in the manner described in this manual then the
safety protection provided by the equipment may be impaired.

Operators Manual November 2009
41734 carbon controller
1.2 Connecting the Controller to the Power Supply
•The mains power must be either 100/110VAC or 220/240VAC with a mains frequency of 50 or 60Hz
•The supply circuit must be fused to at least 10Amps and have a dual pole isolation switch within
easy access of the carbon controller. The isolation switch must be marked as the isolation switch for
this equipment. It is recommended that a separate isolation switch be used for each controller so
that a controller can be serviced individually.
•The power supply cables must be supplied and installed according to local regulations
•The earth connection must comply with the local regulations must have a current carrying capability
equal or greater than the supply fuse current rating
•The earth connection must be connected to the primary earth stud inside the controller on the right
hand side
•All other bonded earth connections from the external wiring must be connected to the primary earth
stud
1.3 Mounting Position of the Controller
•The controller should be mounted in a position where the ambient temperature will not exceed
55°C/130°F or be less than -25°C/-10°F ambient temperature
•It must not be exposed to:-
oradiation from appliances such as ovens or furnaces
odirect sunlight
orain, snow or sleet
•The ventilation must be adequate to remove excess heat build up from the internal circuit of the
controller
1.4 Warning Symbols
Danger, high voltage. Risk of electrical shock.
Caution hot surface.
Caution, risk of danger. See additional information in the manual.

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1734 carbon controller 5
2. INTRODUCTION
The Novatech 1734 Carbon Controller provides in-situ measurement for one or two carbon probes in furnace
and gas generators with temperatures up to 1400°C. The controller provides local indication of carbon
percentage and oxygen, plus numerous other related measurements.
Within the same process either one or two probes can be controlled providing average and/or individual
probe readings. The controller provides two isolated 4-20mA outputs, 4 normally closed configurable relay
outputs and digital communications via MODBUS. Alarms are displayed at the controller and the relay
contacts can be configured to activate remote alarm devices. Using unheated Novatech zirconia carbon
probes the analyser also provides automatic probe filter purging.
The model 1734 carbon controller is based on the well known model 1634 controller. It includes a number of
hardware and software improvements such as a graphic display, larger characters, faster microprocessor,
simplified set up menu, alarm logging, faster probe heater control and more accuracy in the calculation of
carbon.
The 1734 Carbon Controller has a variety of user-selectable functions. The device is configured locally using
a menu driven interface and the local keypad & display. For a description of the configuration process refer
to Chapter Error! Reference source not found.
Features include:-
Inputs
Two Novatech zirconia carbon / oxygen probes
Carbon range up to 2.0%
Oxygen range from 10-30 to 100%
Furnace or auxiliary thermocouple, field selectable as type K, J, R, S or N
Purge pressure or flow switch
Outputs
Two linearised 4-20mA or 0-20mA DC isolated outputs, max. load 1000Ω
The output function and the range are field selectable
Common alarm relay
Three other alarm relays with selectable functions
Digital Interface
RS-232 or RS-485 MODBUS™for connection to a computer/DCS/PCL for diagnostics of the controller,
probe or combustion process.
Display
Multi font graphical display
Large font characters for the carbon % on the top line
Selectable lower line items for the secondary display functions. ie Probe temperature, carbon %
measurement on the second probe, oxygen etc
Alarm display mode that shows the time of the alarm, the acceptance time and the time that the alarm was
cleared of up to 4000 alarm events
Power
Universal mains supply voltage, 100 to 240VAC
Automatically detects the mains voltage and frequency and set the power control accordingly

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1734 carbon controller 7
3. SPECIFICATIONS
3.1 Hardware Specifications
Number of carbon probes: 2 maximum
Carbon range: up to 2.0%
Oxygen range: 1 x 10-30 to 100%
Oxygen accuracy: ±1% of actual measured oxygen value with a repeatability of ±0.5% of the measured
value
Thermocouple types: Type K, J, R, S & N
Temperature accuracy: ±2°C
Analogue outputs: 0-20mA or 4-20mA field selectable
Active outputs (Do NOT loop power these outputs)
Output load: 1000 ohm max
Alarm relays: 4
Alarm relay contacts: 2A/240VAC, 2A/30VDC
(WARNING: Do not use both mains voltage and low voltage connections to adjacent alarm contacts)
Mains voltage supply: 100 to 240VAC, -6 +10%, 50/60 Hz
Overvoltage: Category II (IEC60364-4-443)
Power: 5W for controller plus probe power
Fuses: 3A, fast blow, 250v, 20x5mm (heater fuses, 2 of)
1A, slow blow, 250v, microfuse (PCB mtg fuse, 1 of)
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: 260mm (10.2”) wide, 160mm (6.3”) high, 90mm (3.5”) deep
Weight: 3 Kg (6.6 lbs.)
WARNING: All signal level connections onto the controller 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.

Operators Manual November 2009
81734 carbon controller
3.2 Operational Specifications
The 1734 controller has two fully configurable 4-20mA analogue outputs. The channels can be configured
independently to output one of several calculated values.
The following outputs are available on channel #1:
Output Zero Span Step Min Span Default
Probe 1 Carbon % 0% 0.1 to 1.5% 0.1% 0.1% 0 to 1.5%
Average Carbon % ** 0% 0.1 to 1.5% 0.1% 0.1% 0 to 1.5%
Probe 1 EMF 0 to 1400mV 100 to 1500mV 100mV 100mV 0 to 100mV
Probe 1 TC Temperature 0 to 1500°C 100 to 1600°C 100°C 100°C 0 to 1300°C
Probe 1 Oxygen % 0 to 99% 1 to 100% 0.1% 1% 0 to 25%
Reducing Oxygen 1 exp +2 to -28 0 to -30 1 2 decades -1 to 30
Aux TC Temperature * 0 to 1500°C 100 to 1600°C 100°C 100°C 0 to 1300°C
No Output - - - - -
** Only available in dual probe mode. * Only available in single probe mode.
The following outputs are available on channel #2:
Output Zero Span Step Min Span Default
Probe 1 Carbon % * 0% 0.1 to 1.5% 0.1% 0.1% 0 to 1.5%
Probe 2 Carbon % ** 0% 0.1 to 1.5% 0.1% 0.1% 0 to 1.5%
Average Carbon % ** 0% 0.1 to 1.5% 0.1% 0.1% 0 to 1.5%
Probe 1 EMF * 0 to 1400mV 100 to 1500mV 100mV 100mV 0 to 100mV
Probe 2 EMF ** 0 to 1400mV 100 to 1500mV 100mV 100mV 0 to 100mV
Probe 1 TC Temperature * 0 to 1500°C 100 to 1600°C 100°C 100°C 0 to 1300°C
Probe 1 TC Temperature ** 0 to 1500°C 100 to 1600°C 100°C 100°C 0 to 1300°C
Probe 1 Oxygen % * 0 to 99% 1 to 100% 0.1% 1% 0 to 25%
Probe 1 Oxygen % ** 0 to 99% 1 to 100% 0.1% 1% 0 to 25%
Reducing Oxygen 1 exp. * +2 to -28 0 to -30 1 2 decades -1 to 30
Reducing Oxygen 2 exp. ** +2 to -28 0 to -30 1 2 decades -1 to 30
Aux TC Temperature * 0 to 1500°C 100 to 1600°C 100°C 100°C 0 to 1300°C
No Output - - - - -
** Only available in dual probe mode. * Only available in single probe mode.
The zero and span of the selected output are set in the following two menus (functions 11&12 and 14&15).
Range of local indication:
The measurement of carbon is shown as the main and largest value on the display. It is shown with 2
decimal places as #.## %.
The measured oxygen content displayed on the Lower line is shown in either %, or in scientific notation.
The format of the oxygen display changes to maintain the best resolution for the measurement.
Range Display format
30.0 to 100.0% ##.#%
1.00 to 29.99% ##.##%
0.100 to 0.999% #.###%
< 0.100% scientific notation (#.## x 10- ## % )

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1734 carbon controller 9
Local display, secondary functions:
This function allows the operator to change the items that are available to be displayed on the lower line of
the controller in RUN mode. If the word “Enabled” appears on the display for a selected lower line option,
the measurement will be available to be shown on the display in the RUN mode by scrolling through the list
using the DISPLAY UP and DISPLAY DOWN keys.
A lower line measurement can be “Enabled” or disabled by pressing the ENTER key.
OPTIONS: Enabled as Default
1 Probe 2 Carbon % *
2 Average Carbon % *
3 Probe 1 TC Temperature *
4 Probe 2 TC Temperature *
5 Probe 1 EMF mV *
6 Probe 2 EMF mV *
7 Probe 1 Sensor Impedance *
8 Probe 2 Sensor Impedance *
9 Probe 1 Oxygen %
10 Probe 2 Oxygen % *
11 Auxiliary TC Temperature
12 Ambient Temperature
13 Ambient Relative Humidity
14 Controller Set Point
18 Burner Run Time
19 Service date
NOTE: An asterisk (*) on the end of the line identifies the item is enabled by default after a COLD-START.
3.3 Heater Interlock Relays
Heater Supply Interlock Connection for Heated Probes
If the solenoid outputs are to be used, a link must be installed between terminals 10 &11 to enable –
•Carbon control using ON/OFF control
•Carbon control using proportional ON/OFF control
•Carbon control using an up/down motor drive control
•Auto-purge and auto-cal checking.
When the solenoid outputs
are to be used a link must be
installed as shown.
10
11 BURNER INPUT

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1734 carbon controller 11
4. DISPLAY AND KEYPAD
The 1734 controller has a graphic display, 8 keys that are accessed from the outside of the cabinet and 5
LED indicators to show the status of the controller. All the keys have a dual function. The black text on the
key is the function while the controller is in the RUN mode and the white text on the key is the function in the
SETUP mode.
The SETUP mode is accessed by pressing the SETUP key. The controller will return to the RUN mode
when the SETUP key is pressed again or one minute after the last key is pressed.
The front panel of the model 1734 carbon controller
4.1 Display
The 1734 display is used to show the carbon percentage in a large font and the secondary functions in a
smaller font. The default display is shown below with probe #1 carbon on the top line and the probe #1
temperature on the lower line.
In addition to displaying the current carbon and the various secondary values, the display is also used to
show the current and active alarm conditions and to configure the controller. This is achieved by entering the
SETUP mode (see chapter 5). The backlight will turn off if the case temperature is over 35°C. It will come
on again as soon as a key is pressed and remain on for 60 seconds.
The Activity indicators show actions that are happening in the background.
BThe burner input has been enabled (terminals 10&11)
AThe controller is doing an auto calibration. This happens every minute or when the AUTO CAL keyis
pressed in setup mode
T(Flashing) The probe(s) is(are) below operating temperature (650°C/1200°F)
ZThe controller is doing an impedance check of the probe(s).
0.98%
Probe 1 TC 1020.3 C
14:20:36
POWE
R
CARBON CONTROLLER
1734
B
Power on
indicator
Activity indicator
(see below for
details)
Carbon measurement, probe 1
N/A (Not Available) will be
shown when probe 1 is below
550 °C
(
1022°F
)
Lower line,
secondary measurements
Current time
Heartbeat
indicator

Operators Manual November 2009
12 1734 carbon controller
4.2 Keypad
There are 8 keys built into the decal on the outside of the door of the 1734 carbon controller. The key
function is printed in BLACK and WHITE to identify the function of the key in either RUN mode or SETUP
mode.
Key text RUN mode (WHITE text) SETUP mode (BLUE/BLACK text)
SETUP / RUN Enter SETUP mode Return to RUN mode
DISPLAY / FUNCTION ΔDisplay scroll up Function scroll up
DISPLAY / FUNCTION ∇Display scroll down Function scroll down
ALARM / OPTION ΔAlarm scroll up Option scroll up
ALARM / OPTION ∇Alarm scroll down Option scroll down
ALARM ACCEPT / ENTER Alarm accept Enter
GAS 1 PURGE 1 / SENS IMP Gas 1 / Purge 1 manual activate Probe impedance
GAS 2 PURGE 2 / AUTO CAL Gas 2 / Purge 2 manual activate Auto calibrate
4.2.1 Keypad in RUN Mode
When the controller is turned on, and has gone through the start-up procedure, it will go to the RUN mode.
In this mode the top line of the display will show the carbon measurement from probe 1. The other key
functions are –
SETUP / RUN Key
Pressing this key once will put the controller into the SETUP mode. The function of all the keys will then
change to the functions that they have in the SETUP mode. Pressing the SETUP / RUN key again will return
the controller to the RUN mode, or it will return automatically one minute after the last key press.
DISPLAY UP / DISPLAY DOWN Keys
The display keys are used to scroll the lower line up and down through the variety of measurements that are
available on the lower line display. The list can be changed to suit the operator by using SETUP function #3.
ALARM UP Key
If there is either a new alarm or an active alarm the ALARM UP key 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).
ALARM DOWN Key
When the controller is in the run mode or the alarm mode (the ALARM UP key has been pressed), the
ALARM DOWN key and the ALARM UP key allow the operator to examine the alarm log. The date / time of
last 4000 alarms can be scrolled through. Each alarm record consists of the alarm name and the date / time
that the alarm was initiated, accepted and cleared (see chapter 6, Alarms).
ALARM ACCEPT Key
The ALARM ACCEPT key is used to accept a new alarm (see chapter 6, Alarms).
GAS 1 / PURGE 1 and GAS 2 / PURGE 2 Keys
These two keys are used to turn on the purge solenoids. When the controller is in the manual purge mode
(Commissioning function #21 & 26) the solenoid will be activated for as long as the key is pressed. When
the controller is in the auto purge mode the automatic purge cycle is started. The cycle can be stopped by
pressing any key. (See chapter 7, Probe Purge)

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1734 carbon controller 13
4.2.2 Keypad in Setup Mode
When the SETUP / RUN key is pressed once, the controller will go into the SETUP mode.
For information about the additional user-selectable options, see the 1734 Technical Manual.
The following key functions are then available in the SETUP mode.
SETUP / RUN key
Pressingthis key once will put the controller into the SETUP mode. The function of all the keys will then
change to the functions that they have in the SETUP mode. Pressing the SETUP / RUN key again will return
the controller to the RUN mode, or it will return automatically one minute after the last key press.
FUNCTION UP / FUNCTION DOWN Keys
These two keys allow the selection of the required setup function from the list shown at the start of chapter
5.1 (Setup Mode Function Summary).
OPTION UP / OPTION DOWN keys
These two keys allow for the selection of the options that are available in the selected function. See the
details of these in chapter 5.2 (Setup Mode Details).
ENTER key
The ENTER key saves the selected option. If the ENTER key is not pressed when a new option is chosen,
the previous option will be retained.
SENSOR IMPEDANCE key
When this key is pressed the controller will measure the impedance of the sensor in the probe(s). This will
only happen if the burner is enabled (terminals 10 and 11) and the probe temperature is over 700°C/1290°F.
AUTO CALIBRATE key
When this key is pressed the controller will calibrate the analog output channels. This is done by directing
the output current away from the output terminals (terminals 12 &13 and 14 & 15) and directing the current
back into the controller input. The controller 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 Technical Manual for more details)
4.2.3 Information Screen
The 1734 carbon controller has an information screen available to the user to allow more detailed information
about the running of the controller to 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 controller 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/purge 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 entered from the run mode by pressing (and holding) the ALARM ACCEPT key
and then pressing the SETUP key. 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 DISPLAY up and down keys. The
data cannot be changed.
The output and control functions continue as normal while the information screen is being displayed. The
normal display is resumed by pressing the set-up key.

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14 1734 carbon controller
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1734 carbon controller 15
5. SETUP MODE
This chapter describes the functions available when the SETUP mode is selected on the controller.
The SETUP mode is accessed by pressing the SETUP key. The controller will return to the RUN mode
when the SETUP key is pressed again or 1 minute after the last key is pressed.
5.1 Setup Mode Function Summary
When the controller is in the SETUP mode the SETUP light will be on. The following table shows the SETUP
menu functions:
Menu # Function name (top line) Range Default value
01 Probe 1 offset -6.0 to +6.0mV 0.0mV
02 Probe 2 offset -6.0 to +6.0mV 0.0mV
03 Lower line items - See SETUP function #3
for details (chapter 5.2.2)
04 Damping factor No damping to
10 samples averaged 5 samples averaged
05 Process alarms Enabled / Disabled Disabled
06 Carbon controller See chapter 5.2.6
07 Carbon & set point 0.01 to 2.00% 1.20%
08 High carbon alarm 0.01 to 2.00% 1.50%
09 High carbon alarm delay 0 to 200 seconds 20 seconds
10 Low carbon alarm 0.01 to 2.00% 0.35%
11 Low carbon alarm delay 0 to 200 seconds 20 seconds
12 Carbon Deviation alarm 0.01 to 2.00% 2.00%
13 Carbon Deviation alarm delay 0 to 200 seconds 30 seconds
5.2 Setup Mode Details
5.2.0 To Change an Option in the Setup Menu
1. Select the SETUP mode by pressing the SETUP / RUN key once. The SETUP light will come on
and the display will have the format shown above. The operations of the keys are now the
operations written in white on the keypad. The menu name is written at the bottom of the display.
2. When the SETUP mode has been selected the required function can be found by using the
FUNCTION UP and FUNCTION DOWN keys.
3. The options available for that function can be seen by using the OPTION UP and OPTION DOWN
keys.
4. When the required option is on the display the ENTER key is used to save that option.
5. Press the SETUP / RUN key to return to the RUN mode.
The details of each function are given below.
NOTE: An asterisk next to a listed option denotes default state after a COLD-START
01 Probe 1 Offset
+0.0 mV
Saved

Setu
p
Menu
POWE
R
CARBON CONTROLLER
1734
Power on
indicator
Function
name
Function
number
Selected
o
p
tion
Verification that the
selected option has
been saved
Menu name
Activity Indicator
Aor Z
See cha
p
ter 4.1

Operators Manual November 2009
16 1734 carbon controller
5.2.1 Probe 1 & Probe 2 Offset
Each Novatech probe has an offset calibration value printed on a tag that is attached to the probe when it is
dispatched. The offset value must be entered into this setup function to achieve the most accurate
measurements. The value is usually between -1.0 to +1.0mV.
RANGE: -6.0 to +6.0mV (0.0mV is set after a COLD-START)
NOTE: An error of 1mV in the probe offset will change the carbon reading by about 0.01% carbon.
The function ’02 Probe 2 Offset’ will only appear if the controller has been configured for 2 probes.
5.2.2 Lower Line Items
This function allows the operator to change the items that are available to be displayed on the lower line of
the controller when it is in the RUN mode. If the word “Enabled” appears on the display for a selected lower
line measurement option, the measurement will be available to be shown on the display in the RUN mode by
scrolling through the list using the DISPLAY up and DISPLAY down keys.
A lower line selection can be “Enabled” or disabled by pressing the ENTER key.
OPTIONS:
Probe 2 Carbon % * Oxygen, Probe #1 *
Average Carbon % ** Oxygen, Probe #2 *
Temperature, Probe #1 * Ambient Temperature *
Temperature, Probe #2 * Ambient RH%
Sensor EMF, Probe #1 * Controller Set Point
Sensor EMF, Probe #2 * Burner Run Time
Sensor Impedance, Probe #1 * Service Date
Sensor Impedance, Probe #2 * Auxiliary TC Temperature
NOTE: An asterisk (*) identifies the item is enabled by default after a COLD-START.
03 Lower Line Items
Probe 1 EMF
Enabled
Setu
p
Menu
POWE
R
CARBON CONTROLLER
1734
01 Probe 1 Offset
+0.0 mV
Saved
Setu
p
Menu
POWE
R
CARBON CONTROLLER
1734 02 Probe 2 Offset
+0.0 mV
Saved
Setu
p
Menu
POWE
R
CARBON CONTROLLER
1734

March 2009 Operators Manual
1734 carbon controller 17
5.2.4 Damping Factor
The carbon measurement can be damped if there are annoying fluctuations in the process gas. Of course
any damping will slow down the reaction time of the controller. The larger the number selected here, the
steadier the measurement will be.
The damping factor is also used to damp the oxygen measurement and the damped oxygen value is also
used in the calculation of all other parameters that are based on the oxygen value.
RANGE: “No Damping” to 10 (5 x Samples is set after a COLD-START)
5.2.5 Process Alarms
This function allows the operator to “Disable” process alarms.
Setup functions 7 to 14 show the alarm trip points that have been set in the controller.
OPTIONS:
Enabled
Disabled *
5.2.6 Carbon Controller
The 1734 is able to control the atmosphere to a specific carbon value. The type of control selected here will
depend on the gas control valve being used.
05 Process Alarms
Disabled
Saved
Setu
p
Menu
POWE
R
CARBON CONTROLLER
1734
04 Damping Factor
5 x Sampling
Saved
Setu
p
Menu
POWE
R
CARBON CONTROLLER
1734
06 Carbon Controller
ON/OFF Control
Saved
Setu
p
Menu
POWER CARBON CONTROLLER
1734

Operators Manual November 2009
18 1734 carbon controller
Disabled (No control) *
OPTIONS:
ON/OFF Control
Proportional ON/OFF Control
Proportional + Integral 4-20mA
Floating Control
5.2.3 Carbon Set Point
If a carbon controller type has been selected in the previous function, a set point carbon value can be
entered here. The 1734 controller will operate the gas control valve to maintain the set point carbon in the
process.
OPTIONS:
Carbon % 0.01 to 2.00 (1.20% is set after a COLD-START)
5.2.6 High Carbon Alarm & Alarm Delay
NOTE: These menu functions are read only. To change these settings see, the Technical Manual.
If the controller has been selected to run a single probe, it will show a high carbon alarm when the carbon
measurement of probe 1 goes above the trip level for longer than the delay time.
If the controller has been selected to run dual probes, it will show a high carbon alarm when the average of
the two carbon measurements is below the trip level for longer than the delay time. If either one of the
probes has a failure alarm (High sensor impedance, thermocouple open circuit, heater failure) the alarm will
then trip on the carbon measurement from the remaining working probe alone.
RANGE: 0.01 to 2.00 % (1.50 % is set after a COLD-START)
RANGE: 0 to 200 seconds (20 seconds is set after a COLD-START)
09 High Carbon Delay
20 seconds
Locked
Setu
p
Menu
POWE
R
CARBON CONTROLLER
1734
08 High Carbon Alarm
1.50 %
Locked
Setu
p
Menu
POWE
R
CARBON CONTROLLER
1734
07 Carbon Set Point
1.20 %
Saved
Setu
p
Menu
POWE
R
CARBON CONTROLLER
1734