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Intek Rheotherm 100CS Manual

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WARRANTY
Intek, Inc. warrants each Rheotherm product to be free from defects
in material and workmanship under normal use and service, Intek's
obligation under this warranty being limited to making good any part
or parts thereof which shall, within one (1) year after delivery of such
product to the original purchaser, be returned to Intek with
transportation charges prepaid and which Intek's examination shall
disclose to its satisfaction to have been thus defective; this warranty
being expressly in lieu of all other warranties, express or implied and
all other obligation or liabilities on Intek's part. The purchaser will
assume all responsibility and expense for removal, decontamination
and reinstallation of equipment.
Rheotherm flow meters are manufactured under United States patent numbers 4,255,968; 4,942,763; 4,949,578; 5,485,754, and 5,752,411
Intek, Rheotherm, RheoVac, Rheovec and Rheomax are registered trademarks of Intek, Inc.
Intek, Inc.
751 Intek Way
Westerville, Ohio 43082-9057
TEL: (614) 895-0301
FAX: (614) 895-0319
www.intekflow.com

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  • Page 1 Rheotherm flow meters are manufactured under United States patent numbers 4,255,968; 4,942,763; 4,949,578; 5,485,754, and 5,752,411 Intek, Rheotherm, RheoVac, Rheovec and Rheomax are registered trademarks of Intek, Inc. Intek, Inc. 751 Intek Way...

  • Page 2: Table Of Contents

    Figure 2. Model 100CS PWB Layout Diagram ........- 12 - Intek, Inc. 2010 Manual no.

  • Page 3: General Information

    The enclosure houses the round P/C board on which the relay and electrical interface connector are mounted. Intek also has other switch models where the sensor and electronics are separate units, for high temperature fluids or other conditions. In addition, a two relay flow switch is available for indicating high and low flow conditions.

  • Page 4: Description Of Operation

    The amount of heat removed from the heated sensor by the stream is related to fluid velocity. Hence, the measured temperature differential between the reference sensor and heated sensor is a function of flow rate. Only Intek, Inc. is licensed to use this patented and trademarked method for precision flow measurement.
  • Page 5 Any special information pertaining to your unit is covered under CUSTOM INFORMATION (SECTION 6). Time should be taken to carefully read these instructions prior to installation of the equipment. Should any questions arise or problems occur, call Intek for immediate assistance.

  • Page 6: Installation

    SECTION 2 INSTALLATION 2.1 TRANSDUCER !! IMPORTANT: All transducers have a directional arrow on the tag and/or etched into a metal part. Before installing a sensor, please note proper flow direction. This is critical to sensor operation. The transducer style supplied with your meter is listed in the model code number in SECTION 6. Proper installation of the sensor is necessary for achieving accuracy and repeatability.

  • Page 7: Electrical Connections

    The ideal installation will provide the sensor with well established smooth flow, uniform system temperature and consistent fluid media. Intrusive Probes Straight run is not critical, but if trying to hold a precise set point, some straight run is useful, such as 10 to 20 pipe diameters on the inlet and at least 6 diameters on the outlet. The various probe transducers are mounted through a threaded collar (NPT/2I and NPT/I) or flanged tee (BF/2I or BF/I).

  • Page 8: Operation

    SECTION 3 OPERATION 3.1 START UP Typically, Rheotherm flow switches come from the factory set up for a 10 to 1 flow rate range, and with the trip level set approximately as requested by the customer. The trip level can be adjusted using the instructions in SECTION 3.3.

  • Page 9: Adjusting The Trip Point

    3.3 ADJUSTING THE TRIP POINT Adjust the flow switch trip point as follows (see Figure 2, page 12, for trip potentiometer location): Establish a flow rate at the desired trip level. (This should be done with flow in the line, not at zero flow.

  • Page 10: Maintenance

    SECTION 4 MAINTENANCE 4.1 GENERAL MAINTENANCE Certain precautions should be taken to insure proper performance of all models of flow instruments. Since the measurement technique involves a signal resulting from heat transfer to the flowing medium, care should be exercised to prevent build-up of varying layers on the walls of the transducer. Layers such as bacterial growth, dried paints, gas bubbles and non-solubles can result in measurement below actual flow rates.

  • Page 11: Trouble Shooting

    4.3 TROUBLE SHOOTING TABLE I. TROUBLE SHOOTING GUIDE OBSERVATION PROBABLE CAUSE REMEDY Flow trip level continually drifting Coating forming on wetted surface Clean transducer periodically. downward with constant flow. of transducer. Adjust trip potentiometer clockwise until layer build-up stabilizes. After switch has been operating properly: Bad electronic comp onent.

  • Page 12: Customer Service

    5.3 FACTORY AND FIELD SERVICE If you request field service, Intek has experienced engineers available to meet your needs. Many of the repairs or recalibrations will require returning the instrument to the factory. If a problem cannot be solved over the phone, with your help, we will determine if factory service or field service will be the best solution.

  • Page 13: Custom Information

    SECTION 6 CUSTOM INFORMATION 6.1 UNIT IDENTIFICATION Model no.: Serial no.: Customer identification: 6.2 CONFIGURATION The configuration of this unit, as originally shipped from the factory: Input Power: Q 115 Vac, 50/60 Hz Q 230 Vac, 50/60 Hz Q 24 Vdc Line Connection: 6.3 SPECIAL INSTRUCTIONS Reference...
  • Page 14 Figure 1. Model 100CS Interconnect Diagram Figure 2. Model 100CS PWB Layout Diagram...

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