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manual abstract
Each sensor is: • Individually tested to determine its absolute cell constant (shown on its label as K = ), and its temperature element value (to the nearest 1.0 ohm). Entering each sensor’s OMEGA-certified “K” value and temperature “T” factor during instrument configuration or calibration, ensures the highest possible measurement accuracy. • Built with a Pt 1000 RTD temperature element located at its tip to provide exceptionally fast response to changes in temperature with high measuring accuracy (± 0.2°C). CDE683-series high temperature/high pressure style sensors can be provided in a variety of ways: Basic Cell Constant: 0.5 or 5.0. Installation Style: 316 stainless steel body has 3/4-inch male NPT threads which can be threaded directly into a boiler wall, or insertion mounted into a pipe tee. Termination Style: An integral 20 ft. (6 m) long cable or an integrally-mounted junction box (aluminum, or 316 stainless steel) with 3/4 inch female conduit connection. Always consider the temperature/pressure ratings of the mounting hardware used to install the sensor. The sensor and hardware combine to become an integrated system. The hardware material usually limits the system’s temperature/pressure rating. Refer to Section 2 for complete specifications. Note: The CDE683 series sensors are designed for use with the CDTX680 series transmitters and CDCN684, CDCN685 and CDCN686 controller analyzers only. PART ONE - INTRODUCTION SECTION 2 - SPECIFICATIONS -Section 2 SPECIFICATIONS Wetted Materials......................316 stainless steel and titanium electrodes, PEEK insulator, and fluoroelastomer O-ring seals Maximum Temperature............Sensor w/lntegral Cord Grip: 212°F at 300 psi (100°C at 20.7 bar) Sensor w/lntegral Polypropylene J-box Head: 198°F at 300 psi (92°C at 20.7 bar) Sensor w/lntegral Aluminum or 316 SS J-box Head: 392° F at 300 psi (200°C at 20.7 bar) Maximum Pressure..................Sensor w/lntegral Cord Grip: 300 psi at 212°F (20.7 bar at 100°C) Sensor w/lntegral Polypropylene J-box Head: 300 psi at 198°F (20.7 bar at 92°C) Sensor w/lntegral Aluminum or 316 SS J-box Head: 300 psi at 392°F (20.7 bar at 200°C) Flow Rate.................................0-10 ft. (0-3 m) per second (fully immersed) Temperature Compensator...........................Pt 1000 RTD Sensor Cable: Integral (no junction box)......6 wire cable (4 conductors and two isolated shield wires); 20 ft. (6 m) long Junction Box Head...... 6-position terminal strip supplied in integrally-mounted junction box (polypropylene, aluminum, or 316 stainless steel) Model Numbers: Model No. Cell Constant Max. Temp/Pressure Junction Box CDE683-B 0.5 100°C at 20.7bar (212°F at 300 psi) None 20 ft. cable CDE683-D 5.0 100°C at 20.7bar (212°F at 300 psi) None 20 ft. cable CDE683-B-JA 0.5 200°C at 20.7 bar (392°F at 300 psi) Aluminum CDE683-D-JA 5.0 200°C at 20.7 bar (392°F at 300 psi) Aluminum CDE683-B-JS 0.5 200°C at 20.7 bar (392°F at 300 psi) 316ss CDE683-D-JS 5.0 200°C at 20.7 bar (392°F at 300 psi) 316ss Accessory for CDE683 Series sensors: CDE3600-CAB - Inteconnect cable (25 ft min.) PART ONE - INTRODUCTION SECTION 2 - SPECIFICATIONS PART TWO - INSTALLATION Section 1 LOCATION REQUIREMENTS Locate the sensor as close as possible to the measuring instrument. Do not exceed a distance of 300 feet (91 m) between the sensor and instrument. -Section 2 MOUNTING The CDE683-series high temperature/high pressure style sensor can be mounted directly into a boiler wall, or indirectly into a condensate or process line by using a 316 stainless steel tee of an appropriate size. Figure 2-1 shows the sensor’s general dimensions. FIGURE 2-1 General Dimensions and Cable Wire Details To ensure optimum measurement performance, follow these guidelines when mounting the sensor: ■ Install the sensor into the vessel or pipe run so that the process flow directly contacts the end of the sensor (see Figure 2-2). ■ Preferrably, mount the sensor in a vertical position to eliminate the possibility of trapped air bubbles from contacting its electrodes which can cause measurement error. This also prevents loose pipe line sediment from accumulating and obstructing the sensor electrodes. PART TWO - INSTALLATION SECTION 3 - SENSOR/INTERCONNECT CABLE DETAILS 2.1 Into Vessel Wall Using a Weldolet 2.2 Into Pipe Using a Tee 1. Refer to Figure 2-2, and install a 3/4-inch NPT weldolet into the vessel wall. 2. Fasten the sensor into the 3/4-inch NPT threaded hole. NOTE: Use a high temperature thread sealant on the sensor threads to avoid leaks. 3. Electrically connect the sensor to the analyzer. Refer to the analyzer instruction manual for details. 4. Calibrate the analyzer using the procedure in the analyzer instruction manual. FIGURE 2-2 Installing Sensor Into Vessel Wall Using a Weldolet 1. Refer to Figure 2-3, and install a 316 stainless steel pipe tee of appropriate size (1/2 to 2 inches) into the process pipe. Recomme...