ION TITAN 875 User manual

Instrument User Manual V1.1R
TITAN

875 Benzene Monitor Manual
Ion Science Ltd.
Page 2 of 65
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875 Benzene Monitor MANUAL
Ion Science Ltd.
Page 3 of 65
Thank you for purchasing your Ion Science instrument.
Register your instrument online for extended warranty
The standard warranty of your TITAN 875 Benzene Monitor can be extended up to two years.
To receive your extended warranty, you must register your instrument online within one month of purchase
(terms and conditions apply).
Visit ionscience.com/instrument-registration

875 Benzene Monitor Manual
Ion Science Ltd.
Page 4 of 65
Content
Statements ................................................................................................................................... 7
Validity of this Manual ................................................................................................................... 7
Responsibility for Correct Use....................................................................................................... 7
Quality Assurance ......................................................................................................................... 7
Disposal......................................................................................................................................... 7
Legal Notice................................................................................................................................... 7
Warranty........................................................................................................................................ 7
Service........................................................................................................................................... 8
Contact details............................................................................................................................... 8
Introduction to TITAN ................................................................................................................. 9
Technical specification .................................................................................................................. 9
Environmental conditions ............................................................................................................ 10
Un-Packing................................................................................................................................. 11
Titan Benzene Monitor and Accessories Kit ............................................................................... 11
Titan Detector Module and Accessories Kit................................................................................ 12
System Description................................................................................................................... 13
The Gas Detector........................................................................................................................ 13
Pneumatic Connections .............................................................................................................. 13
Pneumatics.................................................................................................................................. 13
Running Flow............................................................................................................................... 14
Sampling Flow............................................................................................................................. 15
Heaters........................................................................................................................................ 16
Outputs and Communications..................................................................................................... 17
RS485 Modbus Interface........................................................................................................... 18
Function Codes ........................................................................................................................... 18
Bytes and Words......................................................................................................................... 18
Input Registers Address Map...................................................................................................... 18
Holding Registers Address Map.................................................................................................. 20
File Transfer ................................................................................................................................ 21
To read a directory ...................................................................................................................... 21
To read a file................................................................................................................................ 22
To write a file............................................................................................................................... 22
To delete a file............................................................................................................................. 22
Data Files .................................................................................................................................... 23
System Files................................................................................................................................ 23
Installation Requirements ........................................................................................................ 24
Location Requirements ............................................................................................................... 24
Power Requirements................................................................................................................... 24
Cable and Gland Requirements.................................................................................................. 24
RS485 Connections .................................................................................................................... 24
Electromagnetic Compatibility (EMC) Requirements.................................................................. 25
Installation.................................................................................................................................. 26
Preparation for Installation .......................................................................................................... 26
Dimensions for Installation .......................................................................................................... 26
To Install the Housing Module..................................................................................................... 26
After-Installation Test .................................................................................................................. 27
Electrical Connections................................................................................................................. 28
Removal and Installation of the Detection Module................................................................ 31
To Remove the Detection Module............................................................................................... 31
To Install the Detection Module................................................................................................... 33
Operating the Titan ................................................................................................................... 36
Switches and Display.................................................................................................................. 36
Power on ..................................................................................................................................... 36
Main screens and main menu..................................................................................................... 36
Menu Icons.................................................................................................................................. 37
Navigation.................................................................................................................................... 37
Calibration ................................................................................................................................... 37
Benzene Calibration.................................................................................................................... 38
Flow Calibration........................................................................................................................... 38
Removal of the Memory Card ..................................................................................................... 39
Password Lock............................................................................................................................ 39

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Ion Science Ltd.
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Lock the Calibration..................................................................................................................... 40
Lock the STEL and LIVE Displays .............................................................................................. 41
Alarms and Relays ...................................................................................................................... 41
Alarm or Relay Selection............................................................................................................. 42
Alarm Configuration..................................................................................................................... 42
Relay Configuration..................................................................................................................... 42
Relays and 4-20mA Test............................................................................................................. 42
Information Pages ....................................................................................................................... 43
Fault Indications .......................................................................................................................... 44
Alarm Indications......................................................................................................................... 44
Service Period Reminder ............................................................................................................ 45
TitanPC Software....................................................................................................................... 46
Minimum requirements................................................................................................................ 46
Installation ................................................................................................................................... 46
Connect the Titan to the PC........................................................................................................ 46
Starting the Software................................................................................................................... 47
Data Connection.......................................................................................................................... 48
Settings........................................................................................................................................ 49
Data Download............................................................................................................................ 50
Data View.................................................................................................................................... 51
Upgrade....................................................................................................................................... 53
Flow Calibration........................................................................................................................... 54
Benzene Calibration.................................................................................................................... 55
Recorded Faults.......................................................................................................................... 55
Alarm Set..................................................................................................................................... 57
Virtual Screen.............................................................................................................................. 58
Bump Test.................................................................................................................................. 59
Use of the Test............................................................................................................................ 59
Test Procedure............................................................................................................................ 59
Fault Diagnostics ...................................................................................................................... 60
Fault and Alarm indications......................................................................................................... 60
Fault Conditions........................................................................................................................... 60
TitanPC Fault Groups.................................................................................................................. 62
Parts List.................................................................................................................................... 63
Manual Log................................................................................................................................. 65

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Ion Science Ltd.
Page 6 of 65
Declaration of conformity
Manufacturer:
Ion Science Ltd, The Hive, Butts Lane, Fowlmere, Cambridge, UK. SG8 7SL
Product:
875 Benzene Monitor
Product
description:
A fixed monitor comprising of a GC column and photo-ionisation detector, for detecting and
measuring ambient concentration of Benzene with internal data logging and 4-20mA or RS485
output
EU Directives
2014/34/EU ATEX
2014/30/EU Electrical Equipment –Electromagnetic Compatibility (EMC)
Identification
II 2 G Ex d IIB+H2 T4 Gb
Tamb. = -20°C to +55°C
Certificate
Number:
IECEx BAS13.0096X
Notified body:
SGS Baseefa Ltd, 1180, Buxton, UK
Report number:
CZ/FTZÚ/ExTR 14.0030 (IECEx) 14/0172X (ATEX)
Standards:
BS EN 60079-0:
2012
Electrical apparatus for explosive gas atmospheres. General requirements
BS EN 60079-
1:2007
Explosive Atmospheres - Equipment Protection by flame-proof enclosure 'd'
EN ISO1
6852:2010
Flame arresters. Performance requirements, test methods and limits for use. (Replaces DIN EN
12874:2001)
EN1127-1:2007
Explosive atmospheres. Explosion prevention and protection. Basic concepts and methodology.
EN 61000-6-
2:2005
Electromagnetic compatibility (EMC) generic standard for immunity for industrial environments.
BS EN 61010-
1:2010
Safety requirements for electrical equipment for measurement, control and laboratory use. General
requirements.
EN 61000-6-4
:2007 & A1:2011
Electromagnetic compatibility (EMC) generic standard emission standard for industrial
environments.
BS
EN50270:2015
Electromagnetic compatibility - Electrical apparatus for the detection and measurement of
combustible gases, toxic gases or oxygen. Immunity Type 2 - industrial environments.
BS EN 61326-
1:2013
Electrical equipment for measurement, control and laboratory use - EMC requirement - Part 1:
General requirements.
Group 1, Class A equipment - (emissions section only).
Industrial Environment - (immunity section only)
DNV 2.4 : 2006
BS EN ISO
9001: 2008
BS EN 80079-
34: 2011
Environmental test specification for instrumentation and automation equipment. April 2006
Location Classes A and B: EMC requirements only (as verified by a technically competent test
house).
Conducted Low Frequency Immunity Test is pending.
Other standards
Quality Management System - Requirements
Application of Quality Systems for equipment manufacture
Note: All measurements were performed with a configuration that assumes all screens are maintained and correctly
bonded to a screened housing at each end. The only exception to this was the conducted emission tests which
were performed on the inner DC cables. Performing the test directly on these lines gives a good indication that
addition filtering would not be required on any AC/DC power supply in order to limit the conducted emissions
contaminating the ship supply.
On behalf of Ion Science Ltd, I declare that, on the date this product accompanied by this declaration is
placed on the market, the product conforms to all technical and regulatory requirements of the above listed
directives.
Name:
Mark Stockdale
Position:
Technical Director
Signature:
Date:
05/05/2016

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Ion Science Ltd.
Page 7 of 65
Statements
Validity of this Manual
This user manual gives information and procedures for the firmware and software versions shown on the front
page of this manual.
If you have different versions of firmware or software, please obtain the correct user manual.
Responsibility for Correct Use
Ion Science Ltd accepts no responsibility for incorrect adjustments that cause harm or damage to persons or
property. The users are responsible to respond appropriately to the readings and alarms given by Titan.
Use the equipment in accordance with this manual, and in compliance with local safety standards. Use of
external circuit breakers and/or fuse protection is recommended for safe operation in the case of rare
malfunction.
Reduced performance of gas detection might not be obvious, so equipment must be inspected and maintained
regularly. Ion Science recommends:
you use a schedule of regular checks to ensure it performs within calibration limits, and
you keep a record of calibration check data.
Warnings
1. Substitution of components can result in unsafe conditions.
2. For safety, Titan must only be operated and maintained by qualified personnel.
3. Read and understand this Manual fully before you install, operate or maintain Titan.
4. ! DO NOT OPEN WHILE ENERGIZED !
5. ! DO NOT OPEN WHILE A HAZAEDOUS ATMOSPHERE MAY BE PRESENT !
Quality Assurance
Titan is manufactured in compliance with ISO9001:2008. That ensures that the equipment is:
designed and assembled reproducibly, from traceable components,
calibrated to the stated standards before it leaves our factory.
Disposal
Dispose of Titan and its components in accordance with all local and national safety and environmental
requirements. This includes the European WEEE (Waste Electrical and Electronic Equipment) directive. Ion
Science Ltd offers a take-back service. Please contact us for more information.
Legal Notice
Whilst every attempt is made to ensure the accuracy of the information contained in this manual, Ion Science
accepts no liability for errors or omissions, or any consequences deriving from the use of information contained
herein. It is provided "as is" and without any representation, term, condition or warranty of any kind, either
expressed or implied. To the extent permitted by law, Ion Science shall not be liable to any person or entity for
any loss or damage which may arise from the use of this manual. We reserve the right at any time and without
any notice to remove, amend or vary any of the content which appears herein.
Warranty
You can extend the Standard Warranty up to 2 years when you register your Titan instrument via our website:
ionscience.com/instrument-registration
To receive your Extended Warranty, you must register within one month of purchase (Terms and Conditions
apply). You will then receive a confirmation email that your Extended Warranty Period has been activated and
processed.
Full details, along with a copy of our Warranty Statement can be found by visiting: http://
ionscience.com/customer-support/instrument-registration

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Ion Science Ltd.
Page 8 of 65
Service
Ion Science recommends two levels of service for the Titan.
The six-month service includes: replacement of the AirSep filter, the internal (carbon) filter, the external
(hydrophobic) filter; and calibration.
The twelve-month service includes: replacement of all items listed in the six-month service, replacement of the
PID lamp and electrode stack; and calibration.
Contact Ion Science or your local distributor for service options in your area.
Contact details
UK Head Office
Ion Science Ltd
The Hive, Butts Lane,
Fowlmere
Cambridge
SG8 7SL
United Kingdom
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Web: ionscience.com
USA Office
Ion Science LLC
4153 Bluebonnet Drive
Stafford
TX 77477
USA
Tel: [phone]
Email: [e-mail]
Web: ionscienceusa.com
German Office
Ion Science
Messtechnik GMBH
Laubach 30
Metmann-Neandertal
40822
GERMANY
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Web: ism-d.de
Italian Office
Ion Science Italia
Via Emilia 51/c
40011 Anzola Emilia
Bologna
ITALY
Tel: [phone]
Fax: [phone]
Email:
[e-mail]
Web: ionscience.it

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Ion Science Ltd.
Page 9 of 65
Introduction to TITAN
The TITAN 875 Benzene Monitor is a fixed benzene monitor certified for Zone 1 hazardous areas. It detects 0-
20ppm concentrations in ambient air, taking one sample per minute.
It monitors both the current benzene concentration and the STEL (Short-Term Exposure Limit, calculated over
the previous 15 minutes).
Real-time display of the measurement is on the LCD and transmitted on a 4-20mA channel. Historic data stored
in Titan can be viewed and stored externally either over the RS485 or the USB connection.
Alarms and warnings are transmitted by the 4-20mA channel and by two relays programmable to be Normally
Open or Normally Closed.
It is powered by a single power supply in the range of range of 19VDC @ 4A to 32VDC @ 2.4A.
The Titan has two modules:
The Housing Module that is
installed permanently.
The Detection Module that can
be removed for servicing and
calibration.
All the operational and calibration
data is stored within the Detection
Module. After the Detection Module
has been calibrated, it will function
correctly when installed in any
Housing Module.
A Detection Module can be
calibrated and tested off-site, then
taken to the installation site and
installed in place of an existing
module. The removed module can
then be serviced ready for installation
later or in another Housing Module.
Technical specification
Measurement Frequency
Every 1 minute
Response time:
T90 < 1 minute
Detectable Range:
0-20ppm Benzene
Resolution:
+/- 0.1ppm
Accuracy:
+/- 0.05ppm or +/-10%, whichever is greater
Data log:
To internal memory (Up to 2 Years)
Outputs:
4-20mA, RS485, USB, Two programmable
relays (24VDC @1.5A maximum load)
Alarms/Alerts Visual:
Red, Yellow, Green, LEDs
Flow Rate:
≥ 160 ml/min in Ambient conditions
Temperature:
Operating: -20 to 55degC (-4 to 130degF)
Power Requirement
Nominal 24VDC at 3.2A
Weight:
15kg

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Environmental conditions
Location:
Outdoor use
Wet conditions
Pollution degree 4
Altitude:
Maximum 3000m
Relative humidity:
0 –100RH%
Ingress protection:
IP65

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Un-Packing
All equipment shipped by Ion Science Ltd is packed in containers with shock absorbing filling to protect them
against physical damage.
Remove the contents carefully and check them against the packing list. Report discrepancies between the
contents and the packing list to Ion Science Ltd. Ion Science will not be responsible for discrepancies not
reported within ten days of your receipt of the shipment.
Every Titan (new units and those returned from a Service Centre) must have a Certificate of Calibration before
you install it.
Titan Benzene Monitor and Accessories Kit
Part number
Description
Qty.
TNXSXBXX-X
Titan 875 Benzene Monitor and Accessories Kit
Comprising:
Kit
A-875281
Housing Module
1
A-875245
Detector Module
1
875413
Front Cover Removal Tool
2
875400
Transit Strap
1
2/SH10-16
Transit Strap Screws (M10x16)
2
A-875265
Switch Actuation Magnet
1
A-875417
External (Hydrophobic) Filter
1
4/PB-05
Gland Port Plug (for transportation)
2
4/TA-06
Allen Key 2mm
1
4/TA-08
Allen Key 3mm
1
875431
Mounting Template
1
875263
Titan User Manual
1
–
Certificate of Calibration
1

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Titan Detector Module and Accessories Kit
Part number
Description
Qty.
TSMXSXXXX-X
Titan Detector Module and Accessories Kit
Comprising:
Kit
A-875245
Titan Detector Module
1
875405
Transit and Storage Case
1
875413
Front Cover Removal Tool
2
4/TA-06
Allen Key 2mm
1
4/TA-08
Allen Key 3mm
1
–
Certificate of Calibration
1
Titan Label Information: Ensure Warning Label is attached to Titan
! DO NOT OPEN WHILE ENERGIZED !
! DO NOT OPEN WHILE A HAZARDOUS ATMOSPHERE MAY BE PRESENT !
Refer to instruction manual/booklet
Separate collection for WEEE-Waste of electrical and electronic equipment
IP65 Dust-tight and protected against water jets

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Ion Science Ltd.
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System Description
The Gas Detector
The Titan samples the ambient air once every 60 seconds and passes the sample through a Photo-Ionisation
Detector (PID).
The PID works by illuminating sample gases with high energy ultra-violet (UV) light. Benzene is one of the
volatile organic compounds (VOCs) ionised by the UV photons. In a high voltage electric field, these ions create
a current that can be amplified and measured to quantify the concentration of gases present. To make the
measurements specific to benzene, it must be separated out from the other gasses before the PID
measurement.
The sample passes through the AirSep filter which retards some gas components more than others. Under
controlled conditions the filtration ensures the benzene will pass through the filter at a known and well defined
time as a separated component. The benzene level is measured by analysis of the signal profile of the PID as
the gasses from the AirSep filter pass through it.
For optimum performance it is important that the filter temperature and sample flow are tightly controlled. To
achieve temperature stability, the AirSep filter is controlled to 50degC and the internal air temperature of the
Titan is controlled to a maximum of 50degC by separate heating systems
There is no forced cooling mechanism so if the ambient temperature exceeds 50degC the measurement of
benzene will be lower than the actual concentration.
Make sure to install the Titan where the ambient temperature does not rise above 50degC.
Pneumatic Connections
The Titan has three flame-arrestor connectors: one inlet and one outlet for the sampled air, and one breather.
The breather keeps pressure equilibrium between inside and outside of the housing.
The inlet flame-arrestor can have a probe tube, up to 10m long, with hydroscopic filter, to detect benzene in
areas remote from the Titan.
The outlet flame-arrestor can have an exhaust tube attached, to remove the processed air away from the inlet.
Internally, there is also an inlet through the carbon filter and an outlet into the interior space.
Pneumatics
In running flow:
Pump P2 runs for 40 seconds out of every one minute cycle. The pump is stopped for twenty seconds to
allow accurate sampling by Valve V1. When the Valve V1 is in its normal "running" position, the air
bypasses the Photo-Ionization Detector (PID).
Pump P1 keeps a constant flow of clean air from the internal (carbon) filter through the PID. Pump P1
outlet is inside the housing. Thus the clean air recycles through the internal (carbon) filter.
In sampling flow:
At 60 second intervals, Valve V1 moves to its "sampling" position for 0.5 seconds.
Pump P1 then draws a sample of air from the Pump P2 flow. Through the AirSep filter and the PID.
Analysis of the PID signal profile gives the benzene concentration.
Pump P1 flow is approximately 8mL per min.
Pump P2 flow is approximately 200mL per min.
The pressure sensors monitor the correct functioning of the pneumatic systems.
Inlet
Outlet
Breather
Pneumatic
Connection 1 and 2
Pneumatic
Connection 4

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The external (hydrophobic) filter removes particles and moisture from the inlet Flow. Every three hours by the
clock (00:00, 03:00, 06:00…) the Titan will stop to measure the ambient pressure conditions to correctly adjust
for flow control. Important note: bump testing is inadvisable at these times as external pressure sources will
affect the pressure calibration process
Running Flow

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Sampling Flow

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Heaters
The Titan has two heating systems, one regulates the internal temperature, the other regulates the temperature
of the AirSep filter.
Internal temperature regulation is maintained by a set of four resistors in the base of the Housing Module.
AirSep filter temperature regulation is by two, 12V 2.5W, heater-mats within an insulated jacket in the Detection
Module.
Resistor
20 ohm
Resistor
3.3 ohm
2 Heater Mats

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Outputs and Communications
Titan has five communication outputs:
The on-board LCD and LEDs on the faceplate.
4-20mA Current Loop.
RS485 Modbus (simplex/half-duplex or fully-duplex),
USB (Accessible on the Detector Module).
Two programmable relays.
Titan monitors, in real-time, the current (Live) and the Short-Term Exposure Limit (STEL) benzene
concentration. The STEL is calculated over the previous 15 minutes.
This real-time information is displayed on the LCD and transmitted on the 4-20mA and RS485 channels.
You can program two alarms to operate at a chosen concentration of benzene and/or a chosen STEL limit. The
alarms will display a message on the LCD and LEDs; energize the relays: and transmit a signal on the 4-20mA
channel.
The alarms and relays are individually programmable to the settings required by the site policy. You can choose
either alarm to energize either relay. The default settings would be:
Alarm 1: 5.0ppm live
Alarm 2: 0.5ppm STEL
Relay 1: Alarm 1, N/O
Relay 2: Alarm 2, N/O
Both relays can be programed to be Normally Open or Normally Closed. They can switch 24VDC at 1.5A
maximum load. When the Titan is not powered the default state of relay 1 is N/C, the default state of relay 2 is
N/O
Data is stored internally for a minimum of two years and can be downloaded with TitanPC software via USB or
RS485 for analysis and archive storage.
You can configure the RS485 connection for half-duplex, 2-wire, or full-duplex, 4-wire, communication. Refer to
Installation, Terminal Block-2.
The 4-20mA output fault indications are given by discrete current signals between 2.0 and 3.5mA. Refer to the
table in Fault Diagnostics, Fault Conditions.

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RS485 Modbus Interface
The Titan Modbus interface uses Serial ASCII format Modbus, at:
38400 baud 8 data bits, no parity, 2 stop bits.
Function Codes
Titan supports these function codes:
0x03 –Read Holding Registers
0x04 –Read Input Registers
0x10 –Write Multiple Registers
The address map for Read Holding Registers and Write Multiple Registers is the same –but not all addresses
are writeable.
Bytes and Words
Modbus registers are generally 16 bits in length. For example if you send the command to Read Input Registers
with a register quantity of 1 you will receive 2 bytes (1 word) of data. In the tables of addresses, we specify the
length in bytes. This is the number of bytes of data associated with the read/write at that address.
Thus your Modbus request will be for half that number of registers.
Input Registers Address Map
Use the function code 0x04 to Read Input Registers in the address range given in the table. If you read more
than the number of bytes indicated for the length at each address, any bytes beyond the length are undefined.
For example, if you read 32 bytes at address 1000, only the first 16 bytes returned are valid.
Address
(hex)
Data
Length
(bytes)
Content
0
60
Returns block of 15 integers for latest result
Integer
Meaning
1
Benzene value in ppm x 10
2
Sensor temperature in degC x 100
3
Ambient temperature in degC x 10
4
Flow in ml/min x 100
5
PS1 diagnostic
6
PS2 diagnostic
7
PS3 diagnostic
8
Slope diagnostic
9
Flags
10
Sensor fence signal
11
Raw signal
12
STEL value
13
Pump drive signal
14
Pump drive volts
15
Fault record
80
24
Returns block of data indicating the state of the
sensor temperature controller. Six 32-bit integers are
returned. e.g.
00000000 84 13 00 00 22 02 00 00 AD 08 00 00 A0 0F 00 00
„···"······ ···
00000010 01 00 00 00 01 00 00 00 ········
These can be decoded as follows:
84 12 00 00 = 0x00001284 = 4740
The values have the following meaning
Integer
Meaning
1
Temperature in degrees Celsius x 100
2
Ambient temperature in degC x 16
3
Heater drive power in % x 100

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4
Heater driver voltage
5
1 if required temperature has been reached
6
Time in seconds taken to reach target from
switch on
100
24
Returns block of data indicating state of background
temperature controller. Six 32-bit integers are
returned. e.g.
00000000 FC 44 00 00 21 02 00 00 00 00 00 00 01 00 00 00
üD··!···········
00000010 EF 00 00 00 02 00 00 00 ï·······
Integer
Meaning
1
Heater Temperature in degC x 100
2
Ambient temperature in degC x 16
3
Heater drive power in % x 100
4
Heater driver voltage
5
Power supply level x 10
6
Heater level
1000
16
Unique ID of Titan –a string of 16 ASCII characters
unique to each Titan
1100
32
Firmware versions of Titan and Flow Controller. Two
null terminated strings are returned. e.g.
00000000 56 30 2E 31 2E 33 33 00 56 30 2E 31 2E 31 31 00
V0.1.33·V0.1.11·
00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
················
1200
36
Returns a block of data indicating the state of the
flow.
This block contains 9 32-bit integers. e.g.
00000000 21 03 00 00 DA 0D 00 00 20 2F 00 00 88 00 00 00
!···Ú··· /··ˆ···
00000010 01 00 00 00 00 00 00 00 ········
These can be decoded as follows:
21 03 00 00 = 0x00000321 = 801
The values have the following meaning:
Integer
Meaning
1
Current flow x 100
2
Flow Differential pressure sensor reading
3
Absolute pressure sensor reading
4
Pump power output
5
1 if pump power OK,
0 if pump power problem
6
1 if outer loop pump running,
0 if outer loop pump not running
7
Pump drive output voltage
8
Absolute pressure when pump not running
9
Valve state
1300
12
Returns information on the internal memory storage.
Three 32-bit integers are returned.
Integer
Meaning
1
Number of free clusters.
2
Total available clusters
3
Reserved clusters.
1400
96
Returns an array of 27 32-bit integers indicating
internal fault state of Titan. If there are no faults all
values are zero.

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1500
20
Returns five 32-bit integers indicating state of the
lamp sensor.
Integer
Meaning
1
Last signal reading in μV
2
1 is lamp is on, 0 if not
3
0 if lamp drive is off,
non-zero if lamp drive is on
4
Lamp sensor signal when lamp off, in μV
5
Last Lamp sensor signal reading in μV
1600
6
Returns three 16-bit values containing diagnostic data
for pressure sensor
Holding Registers Address Map
Read Holding Registers –use function code 0x03.
Write Holding Registers –use function code 0x01 (Write Multiple Registers).
If you read or write more than the number of bytes specified for the length at each address, any bytes beyond
the length are undefined.
Titan can malfunction if you write more data than the specified length.
For example if you read 32 bytes at address 1000, only the first 16 bytes returned are valid.
Address
(hex)
Data
Length
(bytes)
Content
1100
32
ASCII name allocated to the Titan. This may be
written or read. e.g
00000000 53 65 72 76 69 63 65 20 54 69 74 61 6E 00 00 00
Service Titan···
00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
················
1200
32
Internal real time clock. This may be written or read.
e.g.
00000000 DF 07 00 00 02 00 00 00 0A 00 00 00 10 00 00 00
ß···············
00000010 11 00 00 00 29 00 00 00 02 00 00 00 00 00 00 00
····)···········
This is decoded as 8 32-bit numbers. The last two
integers are not used when writing.
Integer
Meaning
1
Year
2
Month
3
Day
4
Hour
5
Minute
6
Second
7
Day of week
8
Day of year
1300
Used during code upgrade. For ISL use only. Reading
or Writing to this address may require you to send the
Titan to a Service Center.
1400
Used during upgrade of flow controller. For ISL use
only. Reading or Writing to this address may require
you to send the Titan to a Service Center.
1500
4
Override control of measuring sequence. For ISL use
only.
1600
4
Override control of pump. For ISL use only.
1604
4
Override control of by-pass pump. For ISL use only.
1608
4
Override control of sample valve. For ISL use only.