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Table of Contents
Related Manuals for Proteus 800 Series
Summary of Contents for Proteus 800 Series
- Page 1 800 Series Metering Flow Switches TECHNICAL REFERENCE MANUAL...
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Page 2: Table Of Contents
Table of Contents Section Page Introduction Features and functions How the flow sensor works Specifications and performance Product certifications Installation Mechanical Electrical Selecting Trip Points Measuring Flow Rate Digital Displays Cleaning and Maintenance Calibration & Recalibration... -
Page 3: Introduction
• Calibrated 0-5VDC output 800 Series switching flow meters are calibrated to provide a 5 VDC output at the maximum flow rate of each version. Actual flow rate in your circuit can be determined by attaching a voltmeter. An optional scaleable digital voltmeter can be calibrated to provide a direct local display of flow rate. - Page 4 24VDC flow switches and flow meters already in use. ❖ The 800 Series is completely retrofittable in place of existing Proteus flow switches. ❖ The distance between the 800 Series pipe or fitting connections is identical to those of previous Proteus flow sensors.
- Page 5 Trip points are selected by adjusting a 16-position switch as shown in Table 1. This feature provides the ability to change trip point settings predictably, accurately and reproducibly without the use of complex instrumentation. See Section 7 for instructions on selecting trip points. •...
- Page 6 Closed • Multiple outputs provide control flexibility Electrical interfacing of the 800 Series units is effected through an 8-pin connector that provides a range of control options while delivering 24VDC power. See Section 6, Installation for connection details. Connector Position...
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Page 7: How The Flow Sensor Works
Hall effect sensor Section 3 How the flow sensor works The rotor spins when liquid flows through the meter. Magnets Magnets in the rotor switch a Hall-effect sensor Rotor mounted in the meter body. The resulting pulse train is converted by the electronics to a voltage that is proportional to the linear velocity at which the liquid flows through the meter. -
Page 8: Specifications And Performance
Section 4 Specifications and performance The most current information on the performance capability of these sensors is accessible at the Proteus web site at www.proteusind.com. Flow Ranges Part Numbers Connection Brass Polypropylene Stainless Steel 0.2 – 1.2 ¼” NPT 0.05 - 0.3... -
Page 9: Product Certifications
For applications where there is condensation, moisture, dampness, or dripping water, please contact Proteus Technical Support for other product recommendations. Pipe or tubing mounting If rigid piping or tubing is used, the 800 Series metering flow switch may be supported by direct connection to the pipe or tubing. Panel mounting To mount the sensor behind a panel, two of the faceplate securing screws will need to be replaced with longer screws to compensate for the thickness of the panel. - Page 10 Table 2, calibration values may be invalid. Appropriate calibration procedures can be applied to allow the 800 Series flow sensor to be used with pipes and connections with ID’s smaller than those shown in Table 2. Contact Proteus for assistance.
- Page 11 Table 2: Minimum ID of pipe or connection for calibrations to be valid. Note The flow response of 800 Series sensors and thus their calibration may be dependent on the form of the device attached to the inlet connection and other closely located up-stream devices.
- Page 12 • Use Teflon tape or a PTFE-based liquid sealant to provide lubrication for the junction and a leak-tight connection at both input and output connections. Real-Tuff and Hercules are two of many suitable brands of PTFE-based sealants. • Do not over-tighten the connection. Refer to instructions for installation of the mating fittings for information on torque requirements.
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Page 13: Electrical
Electrical inputs and outputs are provided at a single eight-pin socket. An 8-pin connector providing screw fastening of up to #16 gauge conductors is provided with the 800 Series metering flow switch. Replacement 8-pin connectors can be obtained from Proteus, P/N 440157 or from electrical distributors, On-Shore Technology P/N EDZ1550/8, or Digi-Key P/N ED1966-ND. -
Page 14: Selecting Trip Points
Tool Required: A fine flat screwdriver 1. Identify the Part Number of the 800 Series metering flow switch being adjusted. This is noted on the product label. 2. Select the Trip Point Flow chart that applies to your metering flow switch. -
Page 15: Measuring Flow Rate
Section 8 Measuring Flow Rate The voltage output by the 800 Series metering flow switches allows the flow rate of the liquid passing through the device to be estimated. While the flow response curves of the 800 Series metering flow switches are extremely linear, they do NOT pass through zero, requiring the use of a linear regression formula or calibration graphs to derive the actual flow rate from the measured output voltage. - Page 16 The electrical connections are made via screw-clamp terminals located on the back of the Digital Display unit. Signal Power 9 to 28V-DC Ground or Common Figure 6: Rear view of Digital Display Unit Note When wiring the unit check the wiring label on the back of the flow meter to ensure that you connect to the proper terminals.
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Page 17: Cleaning And Maintenance
Section 10 Cleaning and Maintenance Maintenance of the 800 Series Metering flow switch is normally limited to cleaning the chamber in which the rotor spins and an annual recalibration. Cleaning the 800 Series flow sensor The frequency of cleaning will vary with the type and cleanliness of the liquid being run through the flow meter. - Page 18 Cleaning the 800 Series Flow Sensor 4. Remove the rotor and stainless steel shaft from the flow cavity. Remove the O-ring from the faceplate 5. Using a soft cloth dampened with water, alcohol or a light detergent solution, clean debris and dirt...
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Page 19: Calibration & Recalibration
Series flow sensor may be affected by the way in which the sensor is connected to your system. The 800 Series metering flow switch has been calibrated during manufacture to provide an output of 5.0 VDC for the full scale limit of the flow meter, with straight pipe connections. - Page 20 Nylon, Real-Tuff and Hercules are trademarks of their respective holders 800 Series electronics are sensitive to Electro Static Discharge. There is normally no need to open the electronics case, but if it is opened, proper ESD precautions should be taken.