Omega Products ORE-45P Installation Manual
Table of Contents
Part 1 Introduction
1.1 General 3
1.2 Sensor Features 3
1.3 Sensor Specifications 4
1.4 Important Notes 5
Part 2 Installation
2.1 General 6
2.2 Electrical 8
Part 3 Maintenance and Troubleshooting
3.1 Cleaning the Sensor 10
3.2 Replacing the Saltbridge 11
3.3 Troubleshooting 12
Diagrams and Illustrations
Figure 1-1
Figure 2-1
Monitor/Analyzer 6
Figure 2-2 ORE-45P Sensor Styles 7
Figure 2-3 Cable Description 8
Figure 2-4
ORTX-45 Monitor/Analyzer 9
Figure 3-1
Reference Buffer 11
ORE-45P Sensor Dimensions 5
Integral Mount to ORTX-45
Wiring Diagram, ORE-45P Sensor and
Replacing the Saltbridge and
Rev. C, 05/03
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Part 1 - Introduction
1.1 General
1.2 Sensor Features
The Model ORE-45P ORP Sensor measures the
oxidation/reduction potential (also known as REDOX) of
aqueous solutions in industrial and municipal process
applications. It is designed to perform in the harshest of
environments, including applications that poison conventional
ORP sensors. All seals are dual o-ring using multiple
sealing materials. The sensor is designed for use with the
Omega ORTX-45 Monitor/Analyzer.
•
A high volume, dual junction saltbridge is utilized to
maximize the in-service lifetime of the sensor. The
annular junction provides a large surface area to minimize
the chance of fouling. Large electrolyte volume and
dual reference junctions minimize contamination of the
reference solution. Saltbridge is replaceable.
• The reference element of the sensor is a glass pH
electrode immersed in a reference buffer solution.
This glass reference system greatly increases the
range of sensor applications.
• An integral preamplifier is encapsulated in the body of
the sensor. This creates a low impedance signal output
which ensures stable readings in noisy environments
and increases the maximum possible distance between
sensor and analyzer to 3,000 feet (914 meters).
• System diagnostics warn the user in the event of
electrode breakage, loss of sensor seal integrity or
integral temperature element failure.
•
Pt1000 RTD. The temperature element used in this
sensor is highly accurate and provides a highly linear
output.
Rev. C, 05/03
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Part 1 - Introduction 1.3 Sensor Specifications
1.3 Sensor Specifications,
ORE-45P
Measuring Range
Sensitivity
Stability
0.2 mV
2 mV pH per 24 hours, non-cumulative
-1000 to +2000 mV
Wetted Materials PEEK, ceramic, titanium, glass, Viton, platinum or gold,
EDPM (316 stainless steel with 316SS body option)
Temperature Compensation Pt1000 RTD
Sensor Cable 6 Conductor (5 are used) plus 2 shields,
15 feet (4.6 meters) length standard
Temperature Range -5 to 95 °C (23 to 203 °F)
Pressure Range
Maximum Flow Rate
0 to 100 psig
10 feet (3 meters) per second
Max. Sensor-Analyzer
Distance
3,000 feet (914 meters)
Mounting options 1” NPT convertible, 1¼” insertion, 1½” or 2” sanitary style
Weight 1 lb. (0.45 kg)
Notes: 1. The type of hardware used to mount the sensor may limit the maximum temperature
and pressure ratings. Please consult the hardware manufacturer’s specifications
to obtain the relevant temperature and pressure rating information.
2. The maximum flow rate specification is lower for process solutions with low ionic
conductivity or high suspended solids concentration. High flow rates in low ionic
conductivity processes may cause a measurement error due to static electrical
discharge.
Rev. C, 05/03
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Part 1 - Introduction 1.3 Sensor Specifications
Inches (mm)
Figure 1-1 ORE-45P Sensor Dimensions (standard, convertible-style)
1.4 Important Notes
1. The ORE-45P process electrode contains glass and
can break if not handled properly. Should the electrode
ever break, USE CAUTION when handling the sensor
to avoid serious cuts.
2. The electrode must be wetted at all times to ensure
proper functionality. ORE-45P sensors are shipped
with a fluid-filled cap over the electrode to enable
immediate use (remove cap before installing, save for
storage and shipping). Electrodes that have dried
out for any reason should be hydrated for 24 hours to
restore full functionality.
3. Hydrofluoric acid (HF) will dissolve conventional glass
electrodes. Please contact the factory when the
process application involves this or any other questionable substance.
4. A platinum measuring electrode is standard. However,
DO NOT use platinum electrode in process applications
containing cadmium (Cd), nickel (Ni), tin (Sn), or zinc
(Zn). A gold electrode is available for these applications (contact factory for details).
Rev. C, 05/03
5. Likewise, DO NOT use gold electrode in process
applications containing cyanide (CN-).
ORE-45P
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