Omega Products CDTX-83 Installation Manual
Chapter Page
Table of
1 Introduction 1
1.1 Description 1
2 Calibration 3
2.1 Wet Calibration 3
2.2 Calibration Procedure 4
2.3 Installing Optional Display Board 5
2.4 Display Board Range Adjustment 6
3 Installation 7
3.1 General 7
3.2 Positioning 7
3.3 In-Line Installations 8
3.4 In-line Fitting Options 8
3.5 Submersible Installations 10
3.6 Electrical Installation 11
4 Conductivity Sensor Maintenance 13
4.1 Maintenance Tips 13
4.2 Troubleshooting Guide 14
Specifications 15
Dimensional View 16
Warranty 19
Contents
SAFETY INSTRUCTIONS
1. Do not remove from pressurized lines.
2. Do not exceed maximum temperature/pressure
specifications.
3. Do not install/service without following
installation instructions (see sensor manual).
4. Wear safety goggles and faceshield during
installation/service.
5. Do not alter product construction.
6. Failure to follow safety instructions could result
in severe personal injury!
-XX refers to electronic range
options:
• CDTX-80 =
0 to 20 µS, 0.5 cell
• CDTX-81 =
0 to 200 µS, 0.5 cell
• CDTX-82 =
0 to 2,000 µS, 2.0 cell
• CDTX-83 =
0 to 10,000 µS, 2.0 cell
Unpacking and Inspection
The following items are included in your
Conductivity transmitter package:
• CDTX-80 Series Conductivity Transmitter
• Instruction manual
This manual contains description, instructions and
specifications for the installation, calibration and
care of the CDTX-80 Series Conductivity
Transmitter.
1.1 Description
The CDTX-80 Series Conductivity Transmitter is
used in conjunction with an insertion type sensor
that continuously measures the conductivity (total
dissolved solids or gases) of a solution in a wide
variety of process applications.
The Conductivity Transmitter consists of a
conductivity sensor and an electronics package
(transmitter). The electronics package is housed in
a NEMA 4X/IP65 enclosure.
The CDTX-80 Series Condutivity Transmitter can be
converted for submersible applications such as
water wells, tanks etc. Optional submersion kit,
PHCN-86S includes the necessary parts and
assembly instructions for extending the sensor
length up to 12 ft. The submersible kit requires a
3/4 inch pipe with male NPT threads on both
ends, (customer supplied) that is used to physically
extend the sensors' length (See figure 1 page 2).
Chapter 1
Introduction
1
Figure 1
Transmitter submersion kit
and required extension
cable.
CDTX-80 Series Conductivity
Transmitter with Submersion Kit
Customer
supplied pipe
with 3/4 in.
NPT threads
Submersion
Kit/Assembly
Instructions
PHCN-86S
both ends
2
2.1 Wet Calibration
Your CDTX-80 Series Conductivity Transmitter has
been electronically calibrated at the factory before
shipment. You will need to perform a wet
calibration to compensate for electrode variations.
Wet calibration compares the output of the
transmitter against the conductivity value of a test
solution.
Wet Calibration should be performed while the
CDTX-80 Series Conductivity Transmitter is being
permanently installed. When done carefully, you
can trim the transmitter accuracy to within ±1% of
full scale.
P4
Chapter 2
Calibration
P2
Figure 2
Adjustment pots
and connectors
R-R+
12
R26
R17
Zero Pot
(R26)
Gain/Span
Pot (R17)
3
Figure 3
R+ R-
ZERO
SPAN
12
R26
R17
Zero Pot
(R26)
Span
Pot (R17)
+
+
-
-
10 to 30 VDC
Power
Supply
A
Ammeter
Transmitter Hook-up
NOTE:
The current output can be
monitored in several ways
(see Figure 8)
Equipment Required
• Small screwdriver
• Power supply (10 to 30 VDC)
• Ammeter
2.2 Calibration Procedure
1. Connect power supply to transmitter input
placing an ammeter in series with the input
power, see Figure 3.
2. With the Conductivity electrode in the air
(0 conductance) adjust the Zero pot (R26) for
4.00 mA.
3. Place the electrode into a solution of known
conductance and adjust the Span pot (R17) for
the corresponding mA value.
mA =
[(Known Cond./Full Scale Cond.) • 16 mA] + 4 mA
4. Remove the sensor from solution and verify that
the sensor reads 4.00 mA.
5. Repeat steps 2 through 4 as necessary.
4
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