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K-TEK RS80, Installation & Operator'S Manual

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K-TEK RS80 Installation & Operator'S Manual Download Page 3

RS80-0200-1 Rev d (10-2010)

 

DCN0533 

 

    

 

 

 

 

 

3 

1.0 Introduction 

 
1.1 Description 

The Resonator™ Switch is a vibrating fork switch designed for level detection in liquids. The robust sensor design and 
built-in temperature compensation ensure reliable response even in the presence of very extreme process conditions. 
The LED indicators of the Resonator’s modular electronics allow for simple set-up and status detection via pushbut-
tons or a single magnet.  Its rugged construction allows it to withstand the rigors of just about any industrial environ-
ment.  The Resonator switch is available in two different models:  (1) RS80 - base model or (2) RS85 - multi-options 
model. 
 

1.2 Theory of Operation 

The Resonator vibrating switch utilizes a piezoelectric driven tuning fork that exhibits a change in resonant frequency 
when immersed in any liquid.  “Smart” microprocessor-based electronics keeps 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  is  provided  via  a  relay.  An  important  feature  of  this  device  is  that  its  resonant  fre-
quency is not significantly affected by coating on the fork unless the space between the forks is bridged. The RS80/
RS85’s ability to identify true liquid level in viscous, coating or aerated liquid is unparalleled. The self-test option con-
tinuously checks for fault conditions such as a damaged sensor and under fault conditions displays a blinking red LED 
visible through the glass cover. Applications include redundant high/low liquid level and are unaffected by parameters 
such as specific gravity, dielectric constant or mounting position of the sensor. 
 

1.3  Specification 

For detailed specifications consult the RS80/85 data sheet.

 

 
 

Standard Outline Dimensions 

3/4” (19mm) 

FNPT 

Conduit 

3/4” (19mm) 

MNPT 

Standard 

4 3/8” 

11” (279mm) 

Standard 

PL* 

*Trip Point 3/4” from end  

DIMENSIONS 

Summary of Contents for RS80

Page 1: ...RS80 RS85 ...

Page 2: ...ty Setpoint Adjustment Low RS80 only 11 3 4 Fail Safe Relay Operation RS80 RS85 12 3 5 Fault Mode 12 4 0 Troubleshooting 13 5 0 Appendix A RS85 Only Setup 14 5 1 Density Adjustment Precise Density Setpoint Adjustment RS85 only 14 15 5 2 Time Delay RS85 only 16 5 3 Factory Default Settings Reset RS85 only 17 5 4 Loop Powered Alarm RS85 only 18 6 0 Appendix B 19 6 1 FM Approval on 120 VAC or 240 VAC...

Page 3: ...lectronics keeps 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 is provided via a relay An important feature of this device is that its resonant fre quency is not significantly affected by coating on the fork unless the space between the forks is bridged The RS80 RS8...

Page 4: ...orientation In vertical applications where room allows the unit can be extended into the vessel up to 115 with an extension tube The Resonator RS85 only is also available with Teflon coatings or alloy wetted parts for use in corrosive fluid and sticky applications Resonator dual compartment housing and custom insertion length Resonator switches mounted in KM26 Magnetic Level Gauge Resonator switch...

Page 5: ...losure as the 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 thread size of the vessel coupling should be 3 4 NPT for most probes Certain special applications may utilize couplings of different sizes The information included on the label should be visible If necessary clean the label using a cloth soaked wit...

Page 6: ...gth PL for the Resonator model number will differ based on the process connection A threaded sensor PL is measured from 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 2 1 5 Mounting Position with Extension Tubes If ordering the Resonator with an extended probe length ensure there is adequate space betwee...

Page 7: ...e opti mum mounting is vertical from the vessel top or horizontal flush mounted from the side Note Horizontal mounting Position the forks so that the narrow edge of the tines are vertical This ensures that the liquid or gelatinous process can run off easily Vertical Top Mounted Flush Side Mounted 2 1 8 Pipe Mounting and Empty Pipe Detection The Resonator can be mounted into pipe lines of 2 and lar...

Page 8: ...ch the units are to be used Remote units RS85 only Install the remote sensor probe into the vessel coupling Select a suitable location for the instrument housing that allows convenient access for calibration and meets environmental conditions of the unit Connect conduit between the remote sensor housing and the instrument housing Connect the RG62 type coaxial cable assembly supplied with the unit ...

Page 9: ...80 Forks install and power up the unit with no liquid touching the fork Place a magnet on the X of the label on the housing or press S1 and S2 buttons of the electronics module and hold while a sequence of red and green lights display ending with a single green light Remove the magnet or release the buttons The RS80 is now calibrated to the application and factory settings are in place On RS85 uni...

Page 10: ...iefly turn off 2 Move the magnet to S2 After this action is performed LED 2 will turn green This will set the High S G Setpoint Figure 2 To configure the Resonator with pushbuttons 1 When the fork is DRY or WET depress buttons S1 S2 simultaneously for 1 6 seconds Figure 3 After this action is performed both LED1 LED2 will briefly turn off 2 Depress pushbutton S2 After this action is performed LED ...

Page 11: ... DRY or WET place a magnet at X position between 1 6 seconds Figure 5 After this action is performed both LED1 LED2 will briefly turn off 2 Move the magnet to S1 After this action is performed LED 1 will turn green This will set the Low S G Setpoint Figure 6 To configure the Resonator with pushbuttons 1 When the fork is DRY or WET depress buttons S1 S2 simultaneously for 1 6 seconds Figure 7 After...

Page 12: ... fork and de energize when the level is below switch dry fork The default setting for the Fail Safe or Relay Opera tion of the Resonator will be High To select the Fail Safe operation for the relays place the magnet in the S1 posi tion for 6 seconds Should power be lost the relay will de energize The following sequence of lights will be observed Removing the magnet when LED1 is green will set the ...

Page 13: ...ontacts welded together after short circuit Replace Module put fuse in contact circuit Switches incorrectly Min Max fail safe mode set wrong Set correct mode at electronic insert Thick heavy foam very turbulent conditions foaming liquid Mount Resonator Switch in a bypass line Sporadic faulty switching Extreme RFI Use shielded cable Extreme vibration Decouple damp turn fork 90 Water in housing Scre...

Page 14: ... allows for precise density setpoint adjustment This adjustment is also helpful when dealing with changes in process density Dry Adjustment When the fork is DRY place the calibration magnet on the X position for more than 1 but less than 6 seconds See Figure 9 When both LED s turn off move the magnet to the S1 position for 2 seconds then remove See Figure 10 The RS85 will then return to normal ope...

Page 15: ...en the fork is WET in the process place the calibration magnet on the X position for more than 1 but less than 6 seconds See Figure 13 When both LED s turn off move the magnet to the S2 position for 2 seconds then remove The RS85 will then return to normal operating mode with the new set point See Figure 14 If us ing push button follow figures 15 and 16 This procedure defines a wet condition and c...

Page 16: ...urns off LED1 will blink in correspondence to the different Time Delay settings per Table 4 When the desired Time Delay is reached place the magnet on the S1 position See Figure 17 The Time Delay will be set and the RS85 will return to normal operation If a time delay is not selected the RS85 will return to its current operat ing mode without changing the current Time Delay setting During normal o...

Page 17: ...t settings place the magnet on the X position or hold the S1 S2 pushbuttons for 30 sec onds The following sequence of lights will be observed TABLE 9 OPERATION LED 1 LED 2 Normal GREEN or RED OFF X 30 SECONDS OFF OFF GREEN RED RED GREEN GREEN RED RED GREEN GREEN RED GREEN OFF GREEN OFF Remove the magnet The RS80 85 will be restored to normal operation with the default settings The Resonance Freque...

Page 18: ...To change the high 20mA to Low 4mA output push S2 for more than 6 seconds until LED2 flashes between green low and red high alarm output set tings See Figure 21 and 22 Releasing the pushbutton when LED2 is red will set loop powered alarm at 20 mA Releasing the pushbutton when LED2 is green will set loop power alarm at 4 mA Table 10 Loop Powered Alarm OPERATION LED 1 LED 2 Normal GREEN OR RED OFF S...

Page 19: ...ual explosion proof requirements when using stranded wires and 120 VAC or 240 VAC the crimped pin terminals provided must be used for all electrical connections inside of the housing Install crimp pin terminals to the end of stranded type wires using a crimpling tool before installing wires in terminal block 6 0 APPENDIX B ...

Page 20: ...een Wire Sheild Bare Wire Table 2 Sensor Tx Red Wire GND Black Wire Rx Yellow Wire 26AWG Tsensor Green Wire 22 AWG Probe Enclosure Terminal Wiring Remote Housing Terminal Wiring Table 2 Table 1 DC Positive or AC Line DC Negative or AC Neutral Normally Open 2 Normally Closed 2 Common 2 Normally Open 1 Normally Closed 1 Common 1 ...

Page 21: ...mal use and service and which were not the result of either alterations misuse abuse improper or inadequate adjustments applications or servicing of the product K TEK s warranty does not include onsite repair or services Field service rates can be supplied on request If a product is believed to be defective the original purchaser shall notify K TEK and request a Returned Material Authorization bef...

Page 22: ...RS80 0200 1 Rev d 10 2010 DCN0533 9 0 Customer Support 18321 Swamp Road Prairieville LA 70769 USA Tel 1 225 673 6100 Fax 1 225 673 2525 Email service ktekcorp com Website ktekcorp com ...

Page 23: ...y Data Sheets MSDS and decontamination tags by affixing these documents in close proximity to the shipment label for identification purposes January 18 2006 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 Yes ...

Page 24: ...RS80 0200 1 Rev d 10 2010 DCN0533 ...

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