Omega Products CDE-45T1 Installation Manual

T
PRODUCT INSTRUCTION SHEET
CDE-45T1 and CDE-45T3 Toroidal Conductivity Sensors
Introduction
®
®
Modern conductivity measurement devices include a class of sensors which use an electrodeless system to determine the conductivity of a fluid. Electrodeless probes function by first exciting a toroid with an AC voltage to produce a magnetic flux in the core. This flux then produces an alternating current flow in the fluid, which passes as a loop through the center of the core. A second toroid then acts as a sensor by using the fluid’s current to produce a magnetic flux in its core which, in turn creates current flow in its windings. The current flow in the fluid and subsequently the detector toroid’s windings, depends on the conductivity of the solution, thereby giving an accurate measurement without contacting the fluid directly.
Your Electrodeless Conductivity Sensor provides a very linear voltage output signal versus the conductivity of the solution within which it is placed. The overall output is proportional to the excitation signal driven into the driver toroid, the amount of gain provided by the output signal amplifier, and the conductivity of the medium being measured. Thus, calibra­tion must be done with a known conductivity solution and the electronics.
Mechanical Installation
Your toroidal sensor can be installed in 2 ways:
FIG. 1
FIG. 1
FIG. 2
O-RING SEAL
FLOW DIRECTION ARROWS x 2
OWARD SENSOR
ALIGNMENT TAB)
(POINT
SENSOR ALIGNMENT NOTCH
SENSOR ALIGNMENT TAB
1. Submersion mount: Mount sensor into rigid or flexible conduit using a 3/4" NPT coupling and attaching to the 3/4" NPT threads near the sensor's cable. Be sure to seal conduit to avoid fluid build up in conduit.
2. In-Line mount: a. Plumb flow cell CDTX-45T-PT into line. Flow cell is provided
FIG. 3
with 2" slip fittings. For threaded connection install a 2" slip x NPT female adapter (CPVC SCH 80).
b. Install o-ring into CDTX-45T-PT as shown in FIG. 1
NUT
c. Install CD-45T1 toroidal sensor into CDTX-45T-PT. Match notch on flange of sensor with tab of flow cell as show in FIG. 2.
d. Install nut onto threads of flow cell and turn clockwise. DO NOT USE TEFLON TAPE OR SEALANT ON THREADS!
CDE-45 Page 1 of 4
PRODUCT INSTRUCTION SHEET
Sensor Wiring
®
The probe has 9 total leads (see FIG. 4).
The driver toroid is connected to the red and black leads with the red shrink tubing around them. When using the probe with various controllers, it is important that the red lead be connected to an AC DRIVER or VOLTAGE IN position while the black lead is connected to a GROUND or DRIVER RETURN line.
The detector toroid is connected to the white and black leads with the white shrink tubing around them. The white lead is typically connected to the SIGNAL IN location and the black lead is connected to a GROUND or SIGNAL RETURN line.
The temperature element is connected to the green and black leads with the green shrink tubing around them. Connect these to the TEMPERATURE INPUT locations. The polarity is not important.
The 3 bare leads, which supply individual pair shielding throughout the cable, should typically be connected to a ground or drain line. Note: The shield leads are not connected to one another, they are all individual shields for the three bundles of wires.
Refer to your controller manual for specific wiring details.
FIG. 4
CDE-45T1
Cable Considerations
The cable uses PVC to protect the wires during use. If the cable comes in contact with the working fluid, the temperature and pressure ratings must be adjusted to allow for the lower tem­perature limits of the cable.
C (DRY) but should only be subjected to 70 deg C when im­mersed in a fluid.
by liquid (raising the possibility of shorting) and all attempts should be made to keep the cable out of the fluid environ­ment. Do not run cable in the same conduit with any other A.C. power wiring nor routed close to any high current demanding equipment. Seal conduit to avoid build-up of moisture. Do not cut cable. Shorter or longer cables can be provided.
The jacket becomes significantly weakened
The cable can withstand 105 deg
CDE-45 Page 2 of 4
Loading...
+ 2 hidden pages