Omega Products CDTX-45T Installation Manual
CDTX
-
45T
Portable Toroidal Conductivity
Table of Contents
TABLE OF FIGURES................................................................................................................................................ 4
PART 1 - INTRODUCTION ..................................................................................................................................... 5
1.1 General .......................................................................................................................................................... 5
1.2 Features ......................................................................................................................................................... 5
1.3 CDTX-45T System Specifications ................................................................................................................ 7
1.4 CDTX-45T Performance Specifications ....................................................................................................... 8
PART 2 –SYSTEM SPECIFICATIONS .................................................................................................................. 9
2.1 General .......................................................................................................................................................... 9
2.2 Portable Handle ............................................................................................................................................. 9
PART 3 – ELECTRICAL INSTALLATION ..........................................................................................................11
3.1 General .........................................................................................................................................................11
3.2 Direct Sensor Connection ............................................................................................................................11
3.3 Sensor Connection .......................................................................................................................................12
PART 4 – CONFIGURATION .................................................................................................................................13
4.1 General .........................................................................................................................................................13
4.2 Hardware Details .........................................................................................................................................13
4.3 User Interface ...............................................................................................................................................14
4.4 Keys .........................................................................................................................................................15
4.5 Display .....................................................................................................................................................15
4.6 Software .......................................................................................................................................................17
4.61 Software Navigation ...............................................................................................................................17
4.62 Measure Menu [MEASURE] ...................................................................................................................19
4.63 Calibration Menu [CAL].............................................................................................................................20
4.64 Configuration Menu [CONFIG] .............................................................................................................21
4.65 Diagnostics Menu [DIAG] .........................................................................................................................23
PART 5 – CALIBRATION .......................................................................................................................................26
5.1 Overview and Methods ................................................................................................................................26
5.11 1-Point Calibration Explained ..................................................................................................................26
5.12 Zero Cal Calibration Explained ...............................................................................................................27
5.2 Performing a 1-Point Calibration .................................................................................................................27
5.3 Performing a Cell Factor Calibration ...........................................................................................................29
5.4 Performing a Sensor Zero Calibration .........................................................................................................30
5.5 Temperature Calibration ..............................................................................................................................30
5.6 TC Factor Calibration ..................................................................................................................................31
PART 6 – SYSTEM MAINTENANCE ....................................................................................................................33
6.1 System Checks .............................................................................................................................................33
6.2 Instrument Checks .......................................................................................................................................33
6.3 Display Messages ........................................................................................................................................34
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Table of Figures
FIGURE 1 – PORTABLE UNIT OVERVIEW ......................................................................................... 9
FIGURE 2 – CDTX-45T BATTERY POWERED DIMENSIONS ............................................................. 10
FIGURE 3 - SENSOR CABLE PREPARATION ................................................................................... 11
FIGURE 4 - LOOP POWERED CONNECTION, CDTX-45T TRANSMITTER ........................................... 12
FIGURE 5 - USER INTERFACE ....................................................................................................... 14
FIGURE 6 - SOFTWARE MAP ........................................................................................................ 18
FIGURE 7 - NACL REFERENCE SOLUTION FOR CALIBRATION ......................................................... 27
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CDTX-45T Portable Toroidal Conductivity System Part 1 - Introduction
Part 1 - Introduction
1.1 General
The Model CDTX-45T Portable Conductivity monitor/analyzer provides an
extremely versatile measurement system for monitoring and control of
conductivity over the range of 20 µS/cm to 2.000 Siemen/cm.
A battery card converts the instrument into a robust, portable measurement
system that operates on one 9 VDC battery. Since this system utilizes the same
high performance toroidal sensor as the standard configurations, it is a very
durable portable monitoring system. It can be used on its own, or it can be used
with other permanently installed continuous monitoring systems to simplify
calibration by using the calibrate-by-reference method.
The CDTX-45T portable displays conductivity and sensor temperature. The
instrument is used with the high performance toroidal sensors.
1.2 Features
· Standard CDTX-45T electronic transmitters are designed to be a fully isolated,
battery operated instrument. The monitor can be quickly converted to either a
loop power transmitter or line powered analyzer.
· Output Hold, Output Simulate, Output Alarm, and Output Delay Functions. All
forced changes in output condition include bumpless transfer to provide gradual
return to on-line signal levels and to avoid system control shocks on both analog
outputs.
· Two 10-bit, isolated, 0-2.5 VDC analog outputs may be configured to track
conductivity and temperature. Both analog outputs can be individually
programmed to fail to specific values.
· Large, high contrast, custom Super-Twist display provides excellent readability
even in low light conditions. The secondary line of display utilizes 5x7 dot matrix
characters for clear message display. Two of four measured parameters may be
on the display simultaneously.
· Sensor diagnostics monitor electrode coating/fouling, sensor leaks, and RTD
condition. Diagnostic messages provide a clear description of any problem with
no confusing error codes to look up. Messages are also included for diagnosing
calibration problems.
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CDTX-45T Portable Toroidal Conductivity System Part 1 - Introduction
· Quick and easy one-point calibration method and sensor zero-cal. To provide
high accuracy, all calibration methods include stability monitors that check
temperature and main parameter stability before accepting data.
· High accuracy Pt1000 temperature input. Temperature element can be user
calibrated.
· Security lock feature to prevent unauthorized tampering with transmitter settings.
All settings can be viewed while locked, but they cannot be changed.
· High reliability, microprocessor-based system with non-volatile memory back-up
that utilizes no batteries. Low mass, surface mount PCB construction containing
no adjustment potentiometers. All factory calibrations stored in non-volatile
EEPROM.
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CDTX-45T Portable Toroidal Conductivity System Part 1 - Introduction
1.3 CDTX-45T System Specifications
Enclosure NEMA 4X, polycarbonate, stainless steel hardware,
weatherproof and corrosion resistant,
HWD: 4.4" (112 mm) × 4.4" (112 mm) × 3.5" (89 mm)
Mounting Options Hand held, wall, panel, pipe/header.
Weight DC transmitter configuration: 1 lb. (0.45 kg)
Display Large, high-contrast, Super-Twist (STN) LCD;
4-digit main display with sign, 0.75" (19.1 mm) seven-
segment characters;
12-digit secondary display, 0.3" (7.6 mm) 5×7 dot matrix
Keypad 4-key membrane type with tactile feedback, polycarbonate
Ambient Temperature Service, -20 to 60 °C (-4 to 140 ºF)
Storage, -30 to 70 °C (-22 to 158 ºF)
Ambient Humidity 0 to 95%, indoor/outdoor use, non-condensing to rated
Electrical Certification Ordinary Location, cCSAus (CSA and UL standards - both
EMI/RFI Influence Designed to EN 61326-1
Output Isolation 600 V galvanic isolation
Filter Adjustable 0-9.9 minutes additional damping to 90% step
Temperature Input Pt1000 RTD with automatic compensation
Displayed Parameters Main input, 0.0 μS to 2000 mS
% Concentration (if enabled)
Sensor temperature, -10.0 to 110.0 °C (14 to 230ºF)
Main Parameter Ranges Automatic or manual selection of the following:
0 to 2000 mS
0.0 to 2.000 mS
0.00 to 20.00 mS
0.0 to 200.0 mS
0 to 2000 mS
0.000 to 2.000 S
characters
with UV coating, integral EMI/static shield and conductively
coated window
ambient temperature range
approved by CSA), pollution degree 2, installation category
2
input
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CDTX-45T Portable Toroidal Conductivity System Part 1 - Introduction
Battery Operated:
Power: Generic 9 VDC alkaline battery, low battery indication at
6.75 VDC. Lithium 9 VDC battery recommended for max
performance.
Enclosure: NEMA 4X, polycarbonate, stainless steel hardware,
weatherproof and corrosion resistant,
HWD: 4.4" (112 mm) x 4.4" (112 mm) x 3.5" (89 mm)
Mounting Options Supplied with carrying handle and cable glands installed.
Outputs: Two 0-2.5 VDC isolated outputs are provided on for
connection to data recorders, etc.
Battery Life: Approximately 100 hours with alkaline battery. Use of
lithium cell increases life to approximately 300 hours.
1.4 CDTX-45T Performance Specifications
(Common to all variations)
Accuracy 0.3% of span or better (± 0.1 μS)
Repeatability 0.3% of span or better (± 0.1 μS)
Sensitivity 0.05% of span (± 0.1 μS)
Stability 0.1% of span per 24 hours, non-cumulative
Warm-up Time 7 seconds to rated performance
Supply Voltage Effects ± 0.05% span
Instrument Response Time 12 seconds to 90% of step input at lowest setting
Temperature Drift Span or zero, 0.03% of span/°C
Max. Sensor-Instrument 200 ft. (18.3 meters)
Distance
Sensor Type Toroidal - 6 wire (paired and shielded) input
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CDTX-45T Portable Toroidal Conductivity System Part 2 – System Specifications
Part 2 –System Specifications
2.1 General
The CDTX-45T Portable Conductivity System comes complete with a specially
designed handle that allows the system to be comfortably carried, or quickly
strapped to a railing. Although the system is designed to be a portable system, it
can be permanently mounted for longer term field use. This is possible due to
the very long battery life spans that can be achieved with the system.
2.2 Portable Handle
A removable handle is included with each unit that provides not only comfortable
transportation of the system, but the integral locking strap allows the system to
be quickly mounted to pipes or rails for longer term use in one area.
Figure 1 – Portable Unit Overview
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CDTX-45T Portable Toroidal Conductivity System Part 2 – System Specifications
MENU
ESC
ENTER
Figure 2 – CDTX-45T Battery Powered Dimensions
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CDTX-45T Portable Toroidal Conductivity System Part 3 – Electrical Installation
Part 3 – Electrical Installation
3.1 General
The sensor cable can be quickly connected to the terminal strip by
matching the wire colors on the cable to the color designations on
the label in the monitor. Keep signal cable away from AC power
lines, adjustable frequency drives, motors, or other noisy electrical
signal lines.
3.2 Direct Sensor Connection
Sensor connections are made in accordance with Figure 3. The
sensor cable can be routed into the enclosure through one of cordgrips supplied with the unit. Some loose cable is needed near the
installation point so that the sensor can be inserted and removed
easily from the flowcell.
Cord-grips used for sealing the cable should be snugly tightened
after electrical connections have been made to prevent moisture
incursion. When stripping cables, leave adequate length for
connections in the transmitter enclosure as shown below. The
standard 20 ft. sensor cable normally supplied with the system is
already stripped and ready for wiring. This cable can be cut to a
shorter length if desired to remove extra cable in a given
installation. Do not cut the cable so short as to make installation
and removal of the sensor difficult.
.
Figure 3 - Sensor Cable Preparation
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CDTX-45T Portable Toroidal Conductivity System Part 3 – Electrical Installation
3.3 Sensor Connection
Figure 4 - Loop Powered Connection, CDTX-45T Transmitter
Notes: 1. Voltage between Terminals 11 and 12 MUST be between 16 and 35 VDC.
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