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A B B ME A SUR EMENT & A N A LY TIC S | OPER ATING INSTRUC TION | OI/R S 8 5 – EN R E V. K

RS85

Vibrating fork level switch

K–TEK Level products

Measurement made easy

Introduction

This operating instruction manual provides the
following information:
•  installation
•  setup
•  time delay
•  troubleshooting

Содержание RS85

Страница 1: ...ING INSTRUCTION OI RS85 EN REV K RS85 Vibrating fork level switch K TEK Level products Measurement made easy Introduction This operating instruction manual provides the following information installation setup time delay troubleshooting ...

Страница 2: ...2 RS85 VIBRATING FORK LEVEL SWITCH OI RS85 EN REV K Contents 1 Description 3 2 Installation 5 3 Setup 10 4 Time delay 13 5 Troubleshooting 14 6 Warranty statement 15 7 ABB RMA form 16 ...

Страница 3: ... a change in resonant frequency when the forks are immersed in any liquid Smart microprocessor based electronics keep the sensor in a resonant state as it changes from dry to wet or wet to dry The resonant frequency is continuously monitored for changes created by a wet or dry sensor and an alarm change in LED is provided along with a DPDT relay An important feature of this device is that its reso...

Страница 4: ...vertical applications where room allows the unit can be extended into the vessel up to 84 in with an extension tube The RS85 is also available with Teflon coatings or alloy wetted parts for use in corrosive fluid and sticky applications Figure 2 Figure 4 Figure 3 Figure 5 2 RS85 switches mounted in external chamber RS85 dual compartment housing and custom insertion length RS85 switches mounted in ...

Страница 5: ...e unit is screwed into place Allow sufficient room above the vessel entry to be able to insert the probe into the opening of the vessel The standard size of the threaded vessel coupling is in NPT for most probes Other size threaded connections or flanges are also available Install and tighten threaded process connection switches with a spanner wrench on the wrench flats of the threaded connection ...

Страница 6: ...m the bottom process thread to the tip of the fork tine A flanged sensor PL is measured from the face of the flange to the tip of the fork tine Vertical top mounted Extended into vessel side mounted 19 05 and 25 4 mm In and 1 in threaded From lower edge of thread 21 5 mm 0 8500 in dia Figure 11 Figure 12 Mounting position with extension tubes If ordering the RS85 with an extended probe length ensu...

Страница 7: ... material ensure narrow edge of forks is parallel with pipe walls To maintain optimum performance in flow or no flow applications the liquids should have low viscosities and low flow velocities less than 5 FPS Empty pipe detection Mounting for high viscosity liquids High viscosity liquids require proper mounting to ensure accurate repeatable service With high viscosities the optimum mounting is ve...

Страница 8: ...conduit is suitable for the environment in which the units are to be used Caution Be sure that all wiring and conduit conforms to the requirements of the National Electrical Code and any enforcing authorities or agencies having jurisdiction over the installation Be sure that any special conditions such as hazardous area locations are given full consideration After installation and wiring it is nec...

Страница 9: ...mediately on the entrance of the enclosure Unused cable entry holes shall be closed by a suitably approved Ex d blanking plug Temperature classes are based on the following table in relation to the maximum process temperature Markings 2 125 54 0 1 688 42 9 REFRENCE MARKS DO NOT PRINT CAUTION DO NOT OPEN WHEN EXPLOSIVE ATMOSPHERE IS PRESENT TAG NO MAX TEMP HOUSING 158 F SENSOR WORKING MAX PRESSURE ...

Страница 10: ...ously During normal operation LED1 will light either RED or GREEN based on the settings of the switch Initial setup instructions Step 1 RS85 resets to factory defaults Power up the electronic module with it disconnected from the fork assembly Figure 21 Press S1 and S2 buttons of the electronic module and hold for several Seconds while a sequence of red and green lights display ending with LED1 RED...

Страница 11: ...mbly On Initial installation it is recommended that the RS85 be calibrated to the process conditions connection The purpose is to establish a dry frequency threshold value reference Step 2 Calibrating to the process conditions connections With the vibrating fork installed via the process connection and under dry fork condition power up the unit Press S1 and S2 buttons of the electronic module simu...

Страница 12: ...e when the level is below switch dry fork The default setting for the fail safe or relay operation of the resonator is high To change the fail safe operation for the relays place the magnet in the S1 position Figure 24 or press pushbutton S1 Figure 25 for 5 seconds LED1 will change back and forth from red to green Removing magnet on red will change fail safe to green fail safe high Removing magnet...

Страница 13: ...ime delay setting per table 4 Table 3 Time delay adjustment OPERATION LED 1 LED 2 Normal Green or red Off S1 for 1 6 sec Off Off Displaying current time delay Green Red Off Off S1 PER table 4 Green Off _ indicates a blinking LED Table 4 Time delay setting LED1 Blinks 1 2 3 4 5 6 7 8 Seconds 0 5 10 15 20 25 30 35 After LED2 turns off LED1 will blink in correspondence to the different time delay set...

Страница 14: ...r after short circuit Replace module put fuse in contact circuit Switches incorrectly Fail safe mode set wrong Set correct mode at electronic module Sporadic faulty switching Relay switches on off while in dry fork conditions Recalibrate switch in process connection Thick heavy foam very turbulent conditions foaming liquid Set time delay Extreme RFI Use shielded cable Water in housing Remove water...

Страница 15: ...vibration unless the units are originally designed for vibration application In addition ABB Inc K TEK Products s warranty does not include on site repair or services Field service rates can be supplied on request If a product is believed to be defective the original purchaser shall notify ABB Inc K TEK Products and request a Returned Material Authorization before returning the material to ABB Inc...

Страница 16: ...able Material Safety Data Sheets MSDS and decontamination tags by affixing these documents in close proximity to the shipment label for identification purposes Return Authorization Form Customer Date Contact Name Product Contact Email Serial No Contact Phone Job No Contact Fax Service Rep Completed by Customer Reason Problem Found None Action None Requested Is expedited return shipping requested Y...

Страница 17: ...17 RS85 VIBRATING FORK LEVEL SWITCH OI RS85 EN REV K Notes ...

Страница 18: ...18 RS85 VIBRATING FORK LEVEL SWITCH OI RS85 EN REV K Notes ...

Страница 19: ...19 RS85 VIBRATING FORK LEVEL SWITCH OI RS85 EN REV K Notes ...

Страница 20: ...odify the contents of this document without prior notice With regard to purchase orders the agreed particulars shall prevail ABB does not accept any responsibility whatsoever for potential errors or possible lack of information in this document We reserve all rights in this document and in the subject matter and illustrations contained therein Any reproduction disclosure to third parties or utiliz...

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