Teledyne Analytical Instruments LXT-380 User manual

Teledyne Analytical Instruments
INSTRUCTIONS FOR
Model LXT-380
Universal Transmitter
DANGER
Toxic gases and or flammable liquids may be present in this instrument.
Personal protective equipment may be required when servicing this
instrument.
Hazardous voltages exist on certain components internally which may
persist for a time even after the power is turned off and disconnected.
Only authorized personnel should conduct maintenance and/or servicing.
Before conducting any maintenance or servicing, consult with authorized
supervisor/manager.
P/N M LXT380
Date 12-19-17
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Use and Disclosure of Data
Information contained herein is classified as EAR99 under the
U.S. Export Administration Regulations.
Export, reexport or diversion contrary to U.S. law is prohibited.

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Teledyne Confidential; Commercially Sensitive Business Data
EU DECLARATION OF
CONFORMITY
This declaration of conformity is issued under the sole responsibility of the manufacturer
APPLICATION OF COUNCIL : 2014/34/EU
DIRECTIVE
STANDARDS TO WHICH : EN 60079-0 : 2012+A11:2013; IEC 60079-0:2011
CONFORMITY IS DECLARED EN 60079-1: 2014; IEC 60079-1:2014-06
EN 60079-11: 2012; IEC60079-11:2011
EN 60079-18:2015; IEC 60079-18:2014
MANUFACTURER’S NAME : TELEDYNE ANALYTICAL INSTRUMENTS
MANUFACTURER’S ADDRESS : 16830 Chestnut Street
City of Industry, CA 91748
U.S.A.
TYPE OF EQUIPMENT : pH, DO, Conductivity, Redox, Free Chlorine,
Free CLO2
EQUIPMENT CLASS : Ex db mb [ia IIC Ga] IIC T4 Gb (Main
Enclosure ) (-20°C ≤ Ta ≤ +55°C).
Ex ia IIC T4 Ga (Sensor Assembly)
(-20°C ≤ Ta ≤ +85°C).
MODEL NUMBER : LXT380, FCA380, CDA380
I, THE UNDERSIGNED, HEREBY DECLARE THAT THE EQUIPMENT
SPECIFIED ABOVE CONFORMS TO THE ABOVE STANDARD(S) PER
2014/34/EU and have been type-approved by Intertek Testing & Certification
Limited, Intertek House, Cleeve Road, Leatherhead, Surrey, KT22 7SB. Intertek
notified body identification number: 0359. Mark: Ex II 2 G.
Code: Ex db mb [ia IIC Ga] IIC T4 Gb and Ex ia IIC T4 Ga.
EC Type Certificate Number: ITS17ATEX101945X
IECEx Certificate Number: IECEx ETL 17.0030X
SIGNATURE:_____________________ SIGNATURE:
FULL NAME: Judy Thomas FULL NAME: Angel Alegria
POSITION: Quality Assurance Dir. POSITION: New Products Mngr.
Date: 06/03/2021 Date:
PLACE: City of Industry, California PLACE: City of Industry, California
06/03/2021

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LXT-380 Universal Transmitter
Teledyne Analytical Instruments ii
Copyright © 2017 Teledyne Instruments/ Analytical Instruments
All Rights Reserved. No part of this manual may be reproduced, transmitted,
transcribed, stored in a retrieval system, or translated into any other language or computer
language in whole or in part, in any form or by any means, whether it be electronic,
mechanical, magnetic, optical, manual, or otherwise, without the prior written consent of
Teledyne Instruments/ Analytical Instruments, 16830 Chestnut Street, City of Industry, CA
91748.
Warranty
This equipment is sold-subject to the mutual agreement that it is warranted by us free
from defects of material and of construction, and that our liability shall be limited to
replacing or repairing at our factory (without charge, except for transportation), or at
customer plant at our option, any material or construction in which defects become apparent
within one year from the date of shipment, except in cases where quotations or
acknowledgements provide for a shorter period. Components manufactured by others bear
the warranty of their manufacturer. This warranty does not cover defects caused by wear,
accident, misuse, neglect or repairs other than those performed by TI/AI or an authorized
service center. We assume no liability for direct or indirect damages of any kind and the
purchaser by the acceptance of the equipment will assume all liability for any damage which
may result from its use or misuse.
We reserve the right to employ any suitable material in the manufacture of our
apparatus, and to make any alterations in the dimensions, shape or weight of any parts, in so
far as such alterations do not adversely affect our warranty.
Important Notice
This instrument provides measurement readings to its user, and serves as a tool by
which valuable data can be gathered. The information provided by the instrument may assist
the user in eliminating potential hazards caused by his process; however, it is essential that
all personnel involved in the use of the instrument or its interface, with the process being
measured, be properly trained in the process itself, as well as all instrumentation related to it.
The safety of personnel is ultimately the responsibility of those who control process
conditions. While this instrument may be able to provide early warning of imminent danger,
it has no control over process conditions, and it can be misused. In particular, any alarm or
control systems installed must be tested and understood, both as to how they operate and as
to how they can be defeated. Any safeguards required such as locks, labels, or redundancy,
must be provided by the user or specifically requested of TI/AI at the time the order is
placed.
Therefore, the purchaser must be aware of the hazardous process conditions. The
purchaser is responsible for the training of personnel, for providing hazard warning methods
and instrumentation per the appropriate standards, and for ensuring that hazard warning
devices and instrumentation are maintained and operated properly.
Teledyne Instruments/ Analytical Instruments, the manufacturer of this instrument,
cannot accept responsibility for conditions beyond its knowledge and control. No statement
expressed or implied by this document or any information disseminated by the manufacturer
or its agents, is to be construed as a warranty of adequate safety control under the user’s
process conditions.

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Teledyne Analytical Instruments iii
Specific Model Information
Instrument Serial Number: _______________________
Sample Gas 1: _______________
Zero Gas: _______________
Span Gas: _______________

LXT-380 Universal Transmitter
Teledyne Analytical Instruments iv
Safety Messages
Your safety and the safety of others is very important. We have
provided many important safety messages in this manual. Please read
these messages carefully.
A safety message alerts you to potential hazards that could hurt you
or others. Each safety message is associated with a safety alert symbol.
These symbols are found in the manual and inside the instrument. The
definition of these symbols is described below:
GENERAL WARNING/CAUTION: Refer to the
instructions for details on the specific danger. These
cautions warn of specific procedures which if not followed
could cause bodily Injury and/or damage the instrument.
CAUTION: HOT SURFACE WARNING: This warning is
specific to heated components within the instrument. Failure
to heed the warning could result in serious burns to skin and
underlying tissue.
WARNING: ELECTRICAL SHOCK HAZARD: Dangerous
voltages appear within this instrument. This warning is
specific to an electrical hazard existing at or nearby the
component or procedure under discussion. Failure to heed
this warning could result in injury and/or death from
electrocution.
Technician Symbol:All operations marked with this
symbol are to be performed by qualified maintenance
personnel only.
NOTE: Additional information and comments regarding a
specific component or procedure are highlighted in the form
of a note.
No
Symbol

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Teledyne Analytical Instruments v
CAUTION: THIS INSTRUMENT SHOULD ONLY BE USED FOR
THE PURPOSE AND IN THE MANNER DESCRIBED IN
THIS MANUAL.
IF YOU USE THIS EQUIPMENT IN A MANNER OTHER
THAN THAT FOR WHICH IT WAS INTENDED,
UNPREDICTABLE BEHAVIOR COULD RESULT
POSSIBLY ACCOMPANIED WITH HAZARDOUS
CONSEQUENCES.
This manual provides information designed to guide you through the
installation, calibration operation and maintenance of your new analyzer.
Please read this manual and keep it available.
Occasionally, some instruments are customized for a particular
application or features and/or options added per customer requests.
Please check the front of this manual for any additional information in
the form of an Addendum which discusses specific information,
procedures, cautions and warnings that may be peculiar to your
instrument.
Manuals do get lost. Additional manuals can be obtained from TI/AI
at the address given in the Appendix. Some of our manuals are available
in electronic form via the internet. Please visit our website at:
www.teledyne-ai.com.

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Teledyne Analytical Instruments vi
Table of Contents
List of Figures .............................................................................. xi
List of Tables ............................................................................... xii
1.0 Introduction ............................................................................. 1
1.1 MODEL LXT-380 TRANSMITTER 1
1.2 BARRIER 9120019 2
1.3 STOPPING PLUG 9310062 3
1.4 SP3X SENSOR 3
1.5 FEATURES 4
1.6 SPECIFICATIONS 5
1.6.1 INPUT SPECIFICATION 5
1.6.2 INPUT RANGES 5
1.6.3 ACCURACY 5
1.6.4 OUTPUT SIGNALS 5
1.6.5 CONTACT RELAYS 6
1.6.6 DISPLAY 6
1.6.7 ENCLOSURE 6
1.6.8 POWER 6
1.6.9 ENVIRONMENTAL CONDITIONS 6
1.6.10 SHIPPING 6
1.7 MODEL CODES 7
1.8 APPROVALS 8
1.8.1 ENCLOSURE 8
2.0 INSTALLATION ........................................................................ 9
2.1 MOUNTING 9
2.2 WIRING 10
2.2.1 WIRING, POWER 12

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2.2.2 WIRING, BARRIER 9120019 12
2.2.3 WIRING, SENSOR SP3X 14
2.2.4 WIRING, 4-20 MA OUTPUTS 15
2.2.5 WIRING, CONTACT RELAY OUTPUTS 15
2.2.6 WIRING, SERIAL OUTPUT MODBUS RTU 16
3.0 OPERATION ........................................................................... 17
3.1 MAGNETIC KEYS 17
3.1.1 HOME/EXIT KEY 18
3.1.2 BACK/HOLD KEY 18
3.1.3 SELECTION ADJUSTMENT KEYS 19
3.1.4 ALPHA NUMERIC ENTRY 19
3.2 MENU STRUCTURE 19
3.2.1 HOLD (OUTPUT HOLD) 21
3.2.2 CAL (CALIBRATION MENU) 21
3.2.3 CONFIG (CONFIGURATION MENU) 22
3.2.4 INFO (INFORMATION MENU) 25
3.2.5 SIM (SIMULATION MENU) 26
3.2.6 FAULT SCREENS 27
3.2.7 SENTINEL® SCREENS 27
3.3 START UP GUIDE 28
3.3.1 CONFIGURE 4-20 MA OUTPUT RANGE 29
3.3.2 CONFIGURE 4-20 MA FAULT CONDITION AND CAL 29
3.3.3 CONFIGURE ALARM RELAYS (RELAYS OPTIONAL) 30
3.3.4 EXIT MENUS AND RETURN TO MAIN DISPLAY 31
3.3.5 SENSOR START UP 32
3.4 USER SELECTABLE OPTIONS 32
3.4.1 SCREEN LIGHTING 32
3.4.2 GRAPHICAL DISPLAY 32
3.4.3 TAG TRANSMITTER NAME 33
3.4.4 SENSOR NAME 34
3.4.5 PASSWORD PROTECTION 34
4.0 CALIBRATION ........................................................................ 37

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4.0.1 AUTO CALIBRATION DESCRIPTION 37
4.0.2 STANDARDIZE CALIBRATION DESCRIPTION 38
4.0.3 MANUAL CALIBRATION DESCRIPTION 38
4.1 pH CALIBRATION PROCEDURES 39
4.1.1 AUTO CAL USING pH 4.01, 7.00, 10.00 BUFFERS 39
4.1.2 AUTO CAL USING OTHER PH BUFFERS 40
4.1.3 STANDARDIZE 40
4.2 ORP CALIBRATION PROCEDURES 41
4.2.1 AUTO CAL WITH QUINHYDRONE 41
4.2.2 STANDARDIZE 41
4.3 PION CALIBRATION PROCEDURES 42
4.3.1 AUTO CAL USING 1, 10, 100 PPM SOLUTIONS4.3.2 42
4.3.2 AUTO CAL USING NON-DECIMAL PPM SOLUTIONS 42
4.3.3 STANDARDIZE 43
4.4 SP3X DISSOLVED OXYGEN CALIBRATION
PROCEDURES 43
4.5 CONDUCTIVITY SENSORS 45
4.5.1 AUTO CAL USING AIR AND CONDUCTIVITY
STANDARD 45
4.5.2 STANDARDIZE 46
4.6 TDS CONDUCTIVITY SENSORS 46
4.6.1 STANDARDIZE 47
4.7 RESISTIVITY SENSORS 47
4.7.1 AUTO CAL USING AIR AND MEG-OHM PROCESS
WATER 48
4.7.2 STANDARDIZE 48
5.0 MAINTENANCE ...................................................................... 49
5.1 CLEANING 49
5.2 REPAIR/SERVICE 49
6.0 TROUBLESHOOTING ............................................................ 51
7.0 PARTS AND ACCESSORIES ................................................ 53
7.1 REPLACEMENT PARTS 53

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8.0 SP3X SENSORS ..................................................................... 55
8.1 SP3X INSTALLATION 55
8.1.1 INSERTION 55
8.1.2 IMMERSION 56
8.1.3 FLOW THROUGH 56
8.1.4 VALVE RETRACTABLE 56
8.1.5 FLANGE FITTINGS 58
8.2 SP3X PART NUMBER CONFIGURATOR 58
8.3 SP3X SENSOR MAINTENANCE 60
8.3.1 ELECTRODE CARTRIDGE INSTALLATION 61
8.3.2 ELECTRODE CARTRIDGE REPLACEMENT 61
8.3.3 ELECTRODE CLEANING 62
8.3.4 PH ELECTRODE CARTRIDGE CLEANING 62
8.3.5 ORP ELECTRODE CARTRIDGE CLEANING 62
8.3.6 PION ELECTRODE CARTRIDGE CLEANING 63
8.3.7 DISSOLVED OXYGEN CARTRIDGES 64
8.3.8 CONDUCTIVITY AND RESISTIVITY SENSORS 65
8.4 SP3X SENSOR SPECIFICATIONS 65
8.4.1 PH ELECTRODES 66
8.4.2 ORP ELECTRODES 66
8.4.3 DISSOLVED OXYGEN 67
8.4.4 AMMONIUM ELECTRODE 67
8.4.5 BROMIDE ELECTRODE 67
8.4.6 CALCIUM ELECTRODE 67
8.4.7 CHLORIDE ELECTRODE 68
8.4.8 CUPRIC ELECTRODE 68
8.4.9 CYANIDE ELECTRODE 68
8.4.10 FLUORIDE ELECTRODE 69
8.4.11 POTASSIUM ELECTRODE 69
8.4.12 SILVER ELECTRODE 69
8.4.13 SODIUM ELECTRODE 69
8.4.14 SULFIDE ELECTRODE 70

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Appendix ...................................................................................... 71
A. Auto Cal Buffer Tables 71
B. LXT-380 Hart Menu 72
C. MODBUS RTU REGISTER LISTING 74
D. RESISTIVITY TEMPERATURE COMPENSATION 81
E. Drawings 82
F. Company Address 85

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List of Figures
Figure 2-1: Dimensions SS Housing ............................................. 10
Figure 2-2: LXT-380 Transmitter Wiring Terminals ....................... 11
Figure 2-3: B80 Barrier Wiring ....................................................... 13
Figure 2-4: SP3X Sensor Connector Wiring .................................. 14
Figure 2-5: Wiring for HART® Communication .............................. 15
Figure 3-1: LXT-380 Screen Map .................................................. 20

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List of Tables
Table 1 Saturation Index ............................................................... 44
Table 2 Altitude Correction ............................................................ 45

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Teledyne Analytical Instruments xiii
DANGER
COMBUSTIBLE GAS USAGE
WARNING
This is a general purpose instrument designed for use in
a non-hazardous area. It is the customer's responsibility to
ensure safety especially when combustible gases are being
analyzed since the potential of gas leaks always exist.
The customer should ensure that the principles of
operating this equipment are well understood by the user.
Misuse of this product in any manner, tampering with its
components, or unauthorized substitution of any component
may adversely affect the safety of this instrument.
Since the use of this instrument is beyond the control of
Teledyne Analytical Instruments, referred as TAI, no
responsibility by TAI, its affiliates, and agents for damage or
injury from misuse or neglect of this equipment is implied or
assumed.

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LXT-380 Universal Transmitter Introduction
Teledyne Analytical Instruments 1
1.0 Introduction
The Teledyne Model LXT-380 transmitter is a single or dual
channel, intelligent, multiparameter transmitter designed for the online
continuous measurement of pH, ORP, pION, dissolved oxygen,
conductivity, resistivity and in a hazardous industrial environment. The
Model LXT-380 transmitter communicates digitally with any Teledyne
SP3X digital sensor, automatically configuring the transmitter’s menus
and display screens to the measured parameter.
The Model LXT-380 transmitter can be loop powered or 24 VDC
powered. The standard configuration has a 4-20 mA output and a RS485
serial communication port with MODBUS ®RTU output. A HART®
communication version (single channel version only) is also available.
Alarm relays are optionally available on any 24 VDC powered
transmitter.
1.1 MODEL LXT-380 TRANSMITTER
IECEx: ETL 17.0030X
ATEX: ITS17ATEX101945X
1180 II 2 G Ex db mb [ia IIC Ga] IIC T4 Gb
This Model LXT-380 Transmitter is intended for installation in
hazardous locations with Zone 1, Ex db mb Gb classification. Ambient
temperature conditions must be within -20°C ≤ Ta ≤ +55°C to comply
with product approval.
Power connections into the transmitter must be made with flame-
proof conduit and cable glands certified for hazardous locations and
compatible with Ex db mb Gb certified equipment.