RT-Ex15-Ex
Contents
1. page 13 TOTAL A Display page 13 GR TOTAL 1 1 page 13 TOTAL Reset page 13 TOTAL Mode page 14 KEFA VALUE in page 14 ENG UNITS page 15 STATUS ONE Display page 15 ANALOG OUT Display page 15 ANALOG OUT page 15 MA OFFSE 16 ANALOG POINT 15 VALUE 20 16 LIMITS Display page 17 LIMITS Programming reee Page 17 Page 17 CYCLE OUT Totalizer Pulse Page 17 RATE amp TOTAL Display Mode page 18 BATCH TOTAL Display Mode page 19 BATCH TOTAL Programming page 19 QUICK GUIDE to Variables amp 1 1 page 20 AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 Introduction Features The RT Ex15 Ex is a meter mounted digital flow monitor that is certified for use in Class I Div 1 l2. GATEAB SAMPLE ENG UNITS A ENG UNITS A A VALUE Scaling factor to display rate in a desired engineering unit such as GPM The KFR factor entered here will also determine the decimal resolution of the rate display The KFR is calculated using the K factor of the transducer being monitored The K factor is the number of impulses per engineering unit established by the transducer manufacturer or by a calibration test The K factor and recommended KFR values are given on the AW Lake Calibration sheet Initial default is 100 00 Displays Hertz w two decimal places The KFR factor is calculated using the following formula KFR Time Base Constant K FACTOR Where 100 is the time base constant for eng units per second 6000 is the time base constant for eng units per minute 360000 is the time base constant for eng units per hour 8640000 is the time base constant for eng units per day K FACTOR is the average number of pulses per desired eng unit that the transducer produces Determine the number of decimal places desired for rate display round off the result of the formula to the desired accuracy and enter the KFR using only that number of decimal places Using too few decimal places can cause relatively large display errors up to several percent of actual reading Using too many decimal places can result in displays with a level of precision exceeding the accuracy of the meter It is recommended to use no more tha
3. AMOUNT NOTE When considering a large cycle amount keep in mind that any external totalizer will miss up to at least one cycle amount of accumulation whenever power is cycled to the RT Ex15 AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 18 CYCLE OUT PULSE OUTPUT Limit Function 2 CYCLE LIMIT ON LIMIT ON Foes AMOUNT CYCLE AMOUNT CYCLE AMOUNT CYCLE AMOUNT CYCLE AMOUNT LIMIT OFF LIMIT OFF LIMIT OFF To program limit functions use the MODE DN button or magnetic switch to select the LIMIT display Press and hold the ENT button or maintain the ENT magnetic switch The display will first show a P in the lower left hand corner and will then highlight the L1 indication with a blinking cursor Use the SEL button or magnetic switch to select the function of the limit assignment Use the ENT button or magnetic switch when the desired mode is displayed for L1 The cursor will now highlight the numeric value to be entered for L1 Entries correspond with the scaling factor decimal location and engineering units for the function selected The left most digit will highlight with a blinking cursor Move the cursor left to right using the SEL button or magnetic switch Use the UP or DN button or magnetic switch to increment
4. be clearly attached to each unit Please make sure this name plate is on the unit and that the information matches what is shown above prior to installation Depending on whether the unit is equipped with a swivel union and or installed with either a 303ss or 316ss flowmeter the tag may not include the Type 4X rating If either the name plate is not on the unit or the unit name plate does not match what is shown above please notify AW Lake Company and determine what needs to be done Because the RT Ex15 Ex uses an explosion proof enclosure for its area protection power must be removed from the unit before the covers are removed while in a hazardous area For proper installation it is also necessary that the conduit entries are properly sealed To maintain the units explosion proof certification anything threaded into the NPT conduit openings must engage by a minimum of 5 full threads Original units received from AW Lake Company will have a sensor installed This item is properly installed with a minimum of 5 full threads of engagement and should not be tampered with The unit also comes with a blind plug It is the customer s responsibility to make sure that any blind plugs used are properly installed with a minimum of 5 full threads of engagement NOTE It is strongly suggested to use anti seize grease on threads prior to installation to avoid galling When installing the RT Ex15 Ex into an AW spur gear meter in order to maintain the unit s e
5. display should read in Gallons with accuracy to three decimal places KFT 10000 2053 7 4 869568 for Gallons Round off 4 869568 to three decimal places and enter 4 870 for KFT AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 15 When entering or editing the KFT value the leftmost digit will blink cursor Select the digit to edit using the SEL button or magnetic switch The cursor will move to the right and will wrap around The decimal point can be relocated when it is selected blinking Use the UP or DN button or magnetic switch to increment or decrement the variable value or move the decimal point Use DN to move the decimal point to the right UP to move it to the left When the desired value is displayed use the ENT button or magnetic switch to store the programmed value and advance to the next variable ENG UNITS A The desired engineering units for display of total are programmable using up to four letters Example GALS Initial default is PULS NOTE The engineering units display does not affect the scaling in any way and serves as nothing more than a label The total scaling is performed in the KFT calculation The first left most character will be highlighted with the blinking cursor first The SEL button or magnetic switch moves the cursor and the UP o
6. the response to YES and then press the ENT button GR TOTAL A will be reset to zero by this operation TOTAL A Rollover RT Ex15 JOB totals will rollover to zero when the total reaches a value of 999999 regardless of the decimal location When a JOB total rolls over or is reset the contents of the JOB total are then added in memory to the GRAND total GR TOTAL A Rollover To allow retention of the largest possible GRAND total before data loss after reaching a value of 999999 regardless of decimal location a floating decimal feature on GRAND TOTAL rollover automatically reduces decimal resolution by a maximum of two decimal places before rolling over to zero and losing the total Example For a KFT with 4 decimal places the GRAND total will reach 9999 99 instead of 99 9999 before resetting to zero AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 14 Total Mode Programming The Total parameters are programmed from the TOTAL A display screen With the cover open use the MODE DN button or magnetic switch to select the TOTAL A display Press and hold the ENT button or maintain the ENT magnetic switch The display will first show a P in the lower left hand corner and will then display the first program variable for the TOTAL display mode Two parameters will be accessed from the
7. 1 FLOW Try ELECTRONICS FOR TRANSMITTERS AW GEAR METERS RT Ex15 Ex Flow Monitor User Manual 8809 Industrial Drive Franksville WI 53126 9337 Tel 262 884 9800 Fax 262 884 9810 E Mail Web http www awgearmeters com RT Ex15 Ex FLOW MONITOR Introduction e eee ee en ren page 3 Model Number Sensor page 3 page 3 Dimensional page 3 Hazardous Area Installation Instructions page 4 Wiring COnMECHONS 5 DC Power Connection Y Reset Input pases Limits Pulse Output paged Analog Output page 6 Frequency Input Calibration Test Point etree es page 6 Display Programming Buttons and Magnetic Switches page 7 Disable External page 7 o ERETON page 8 a ie page 8 Display 9 LOGO Mode ean On Off page 9 RATE Display Modes 10 paged Dage 10 RATE Mode page 11 KER A VALUE page 11 GA DE ALB sities id Sata ae acd page 12 SAMPLE As page 12 ENG UNITS page 12 TOTAL Display
8. 13 11 docx Revision 3 3 10 Programming the 15 Note Model number 15 is used for reference go indicate programming is common to all models This has no effect on the ratings of any RT Ex15 versions Power must be applied to perform programming and set up of the RT Ex15 The RT Ex15 can be programmed in the hazardous area with the cover on using the magnetic switches if function is enabled or OUTSIDE THE HAZARDOUS AREA with the cover removed using the programming buttons IF THE COVER IS REMOVED FOR PROGRAMMING THIS MUST BE DONE OUTSIDE THE HAZARDOUS AREA After variable programming is completed and the desired display mode is selected disconnect the power and tightly install the RT Ex15 cover before installation in the hazardous area See Wiring Connections on page 3 To scale the rate or total display output or limits the RT Ex15 will require programming of the TOTAL ANALOG OUT and LIMIT variables All RT Ex15 parameters programmed from the corresponding display screen For example to program the rate scaling factor decimal resolution and engineering units for display select the RATE A GT display This manual will take the user through the various programming steps in order Startup Message The RT Ex15 displays an initial window at power up After a second the following message will be displayed in the window for approximately 2 seconds After this message the display will revert to the last a
9. 15 for information regarding the display and programming of the limit and pulse output LIM IT OUTPUTS Isolated 100 Ohm LIMIT Bo mA Max Collector 5 24VDC i LIMIT Em itter AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 Analog Output The isolated 16 bit 4 20mA output can be wired in a 2 wire loop powered arrangement or loop power can be supplied via the DC supply as shown in the wiring examples below The mA LED will light with varying intensity in proportion to the mA output for troubleshooting purposes The assignment offset and scaling values for the mA output are programmable See ANALOG OUT Programming on page 13 for information regarding set up of the analog output mA LOOP OUTPUT 2 WIRE mA OUTPUT 3 WIRE Isolated Loop Power from RT Ex15 Ex DC Supply NOTE SEPERATE 24VDC STILL REQUIRED TO POWER UNIT lt LOOP LOOP AD421 AD421 i LOOP 712 24 LOOP _ 4 f R sense sense sense 250 Ohm 12 15 SUPPLY NEGATIVE R sense 500 Ohm max 15 24 Vdc R sense 250 Ohm max 15 Vdc sense 500 Ohm 24 Frequency Input Test Point The RT Ex15 Ex ha
10. CH LOCATIONS DN MODE or magnetic switch in hazardous area with cover closed RATE LIMIT ASSIGN RATE LIMIT MARGINS RATE APL lt L1 LIMIT VALUE LIAA GAL ava our MT ASSIGN GPM UP TOUCH SIDE OF MAGNET TO SWITCH LOCATION RA 02 500 02 500 cen 0568 7 ca 3219 2 caL ATOTAL LIMIT S1 BATCH TOTAL ATOTAL LIMIT 2 0040 0 82 00450 TO PROGRAM RT EX15 PARAMETERS With the cover removed and outside of a hazardous area use the MODE DN button to select the display to program Press and hold the ENT button The display will first show a P in the lower left hand corner and will then display the first program variable for that display mode The RT Ex15 will prompt for a variable selection or numeric entry When entering or editing numeric values or engineering units the digit or character to enter or edit will blink starting with left most position Use the UP or DN to increment or decrement the variable value or character Use the SEL button to move the blinking cursor to the next digit or character When the entire value has been entered use the ENT button to store the programmed value and advance to the next program variable Select LIMIT and ANALOG OUT assignments using the SEL button Use the ENT button to store the assignment and advance to the next program variable The ENT button will exit programming after the last variable has been programm
11. OVER KEEP COVER TIGHTLY CLOSED WHILE CIRCUITS ARE ALIVE DC Power Connection The RT Ex15 Ex requires a Class 2 24 VDC 200mA min supply for operation A power on LED is provided on the connection board and a 250mA mini fuse protects the circuitry in case of a supply fault See drawing below WIRING TERMINALS UNDER REAR COVER ENCLOSURE CUSTOMER CONNECTIONS LEFT TO RIGHT 15 24 0 SUPPLY Vdc Supply SUPPLY NEGATIVE Vdc Supply EARTH GROUND Not use Enel Term S DC Su LOOP Isolated mA Loop RESET Optically Isolated Input RESET Optically Isolated Input LIMIT1 Optically Isolated output LIMIT1 Optically isolated output LIMIT2 Optically Isolated output LIMIT2 Optically Isolated output Reset Input Opto isolated input to reset the TOTAL A Job Total See TOTAL A RESET on page 11 for information regarding reset of the job totalizer RESET INPUT Isolated 2 35 Kohm RESET ay Momentary JAZ 5 24VDC 1 Limits Pulse Outputs RESET Two opto isolated NPN open collector outputs can sink or source depending on connection Attention must be paid to polarity of connections collector emitter See diagram below Output ratings are listed on page 2 Either output can be assigned to a rate limit total limit for batching or as a totalizer pulsed output See LIMITS Display Mode and LIMITS Programming on page
12. TOTAL screen as follows TOTALA A VALUE UNITS A VALUE Scaling factor to display totals in a desired engineering unit such as Gallons The KFT value entered here will also determine the decimal resolution of the total display The KFT is calculated using the K factor of the transducer being monitored The K factor is the number of impulses per engineering unit established by the transducer manufacturer or by a calibration test The K factor recommended KFT value given on the AW Lake Calibration sheet Initial default is 10000 Displays total pulses w no decimals The KFT factor is calculated using the following formula KFT 10000 K FACTOR Where 10000 is a constant K FACTOR is the average number of pulses per desired eng unit that the transducer produces Determine the number of decimal places desired for total display round off the result of the formula to the desired accuracy and enter the KFT using only that number of decimal places Using too few decimal places can cause relatively large display errors up to several percent of actual reading Using too many decimal places can result in displays with a level of precision exceeding the accuracy of the meter It is recommended to use no more than four digits regardless of decimal point position The largest acceptable value for KFT is 65535 with the decimal in any location For example A flow meter has a K factor 2053 57 imp Gal and the
13. ctive Display Mode selected LOAD VARS RT EX15 TURN 0026 MEM LEFT 099 9 VERSION xxx LOAD VARS Indicates that the variables are being recalled from EEPROM TURNON Increments on each power on cycle of RT Ex15 LEFT Memory life indicator displays of memory life remaining in 1 increments The RT Ex15 stores programmed variables and retained totalizer values in EEPROM electrically erasable memory The limit on the number of times memory can be re written results in a minimum EEPROM life of 5 years with continuous use This memory IC can be replaced by AW Company if it becomes necessary Program variables require reprogramming after memory IC change VERSION Indicates the software version installed in the RT Ex15 AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 RT Ex15 Display Modes The RT Ex15 has ten display program modes LOGO GR TOTAL A RAT A TOT A RATE A 9 STATUS ONE BATCH TOTAL RATE A ANALOG OUT TOTAL A LIMITS Display only no programming function During normal operation with the cover secured the Display Mode is changed by touching the side of the magnet wand to the MODE DN location top on the outside of the housing The MODE DN button is used to change the Display Mode when the RT Ex15 cover is opened during programming Th
14. e RT Ex15 will retain the last display mode selected and display it on power up Seven of the display modes are also used to program the related variables LOGO Mode Turning On Off Displays LOGO Display Mode RT Ex15 is used during unit programming set up to turn on or turn off Display Modes Not every user will require all of the display modes and any of the ten Display Modes can be turned off based on a user s particular needs To reassign turn on or turn off a display mode use the MODE DN button or magnetic switch to select the LOGO display mode Press and hold the ENT button or activate and maintain the ENT magnetic switch The display will first show a P in the lower left hand corner and then show DISPLAY 00 and indicate which display mode is assigned to DISPLAY 00 DISPLAY 00 is assigned to the LOGO screen allowing access for display activation deactivation NOTE It is highly recommended that displays to be turned off are done one at a time returning to LOGO display after each screen is turned off Always turn off the highest numbered displays first To turn off a display mode use the ENT button or magnetic switch to scroll through the DISPLAY s until the appropriate display mode is encountered Use the RESET UP button or magnetic switch to turn the display off The DISPLAY assignment will indicate OFF DISPL Use the ENT button or magnetic switch to store the current assignment and advance the RT Ex15 to the next availab
15. ed or magnetic switch in hazardous area with cover closed KER Scaling for display of rate in specific engineering units Determines display decimal resolution Initial value 100 00 Hz w 2 decimals KFR T base SCALING FACTOR K FACTOR Where T base SCALING FACTOR 100 for eng units per second 6000 for eng units per minute 360000 for eng units per hour 8640000 for eng units per day Where K FACTOR is the avg number of pulses eng unit of the transducer Round result to desired decimal accuracy and enter KFR using only that number of decimal places Use no more than four digits regardless of decimal position Maximum is 65535 with the decimal in any location GATE AB Gate time 01 to 600 seconds Display and analog output update time interval Initial value is 002 00 seconds SAMPLE A amp Digital filter on RATE PL 0 to 253 0 min 253 max affecting the update of the display and analog output Initial value is 010 ENG UNITS The desired engineering units for display of rate are programmable using up to four letters Example GPM_ KFT Scaling for display of total in specific engineering units Determines display decimal resolution Initial value 10000 Pulses w no decimals KFT 10000 K FACTOR Where K FACTOR is the avg number of pulses eng unit of the transducer Round result to desired decimal accuracy and enter KFT using only that number of decimal places Use no more than four digits regardless of dec
16. for programming of total scaling factor KFT and reset of TOTAL A and GR TOTAL A The grand total GR TOTAL A can be viewed by using the SEL button or magnetic switch while in the TOTAL A display as illustrated below The rate display will revert back to RATE if power is cycled to RT Ex15 TOTALA 003 53 ca TOTAL A DISPLAY For display of GR TOTAL A only No programming or reset functions are associated with this display TOTAL A 056 87 caL TOTAL The Job total can be reset using the RESET UP magnetic switch or the RESET UP button while cover is open when TOTAL A or RAT A TOT A is displayed Use the MODE DN magnetic switch or button to select a total display TOTAL A can also be reset at anytime using the Reset Input See page 3 for wiring information GR TOTAL A RESET The Grand total can only be reset with the cover off via the front panel buttons using a multiple step sequence To reset GR TOTAL A select the TOTAL A display mode using the MODE DN button Use the SEL button to change to the GR TOTAL display Press the RESET UP and ENT buttons simultaneously and hold until the RT Ex15 responds A warning will appear on the screen requesting yes no verification before resetting the GR TOTAL The RT Ex15 prompts the user either to press the ENT button to accept the default answer of NO and exit the reset procedure at this point or to reset the total To reset use the SEL button first to toggle
17. imal point position Maximum 65535 with the decimal in any location ENG UNITS The desired engineering units for display of total are programmable using up to four letters Example GAL_ TOTAL RESET With the cover removed and outside of a hazardous area use MODE DN button to view TOTAL and RESET UP button to reset or magnetic switch in hazardous area with cover closed GR TOTAL RESET With cover open only Use MODE DN button and SEL button to view GR TOTAL press RESET UP button plus ENT button Use SEL button for Y and ENT button to reset and exit AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10
18. lay and analog output and is useful in stabilizing the display and output when dealing with slight variations in flow Do not set GATE TIME to zero as it will disable rate display When entering or editing the value the digit being edited will blink starting with left most digit Select the digit to edit using the SEL button or magnetic switch Use the UP or DN button or magnetic switch to increment or decrement the variable value When the desired value is displayed use the ENT button or magnetic switch to store the programmed value and advance to the next variable Initial default is 002 00 seconds SAMPLE _ This variable determines the amount of digital filtering performed on the incoming frequency for the RATE A Pulse Length display The allowable range is from 0 to 253 with 0 providing the least level of filtering and 253 the maximum This variable affects the update of the display and analog output and is used as a filter to stabilize the display and output Initial default is 010 When entering or editing the value the digit being edited will blink starting with left most digit Select the digit to edit using the SEL button or magnetic switch Use the UP or DN button or magnetic switch to increment or decrement the variable value When the desired value is displayed use the ENT button or magnetic switch to store the programmed value and advance to the next variable ENG UNITS A The desired engineering units for display of ra
19. le display number 00 09 or exit the LOGO display programming procedure To change a DISPLAY assignment to a different mode use the SEL button or magnetic switch to select from the available display modes Any DISPLAY can be assigned as any display mode Use the ENT button or magnetic switch to store the current assignment and advance the 15 to the next available display number 00 09 or exit the LOGO display programming procedure To restore a Display Mode that has been turned off use the ENT button or magnetic switch to select a DISPLAY with a OFF DSPL assignment Select a display mode assignment using the SEL button or magnetic switch Use the ENT button or magnetic switch to store the current assignment and advance the RT Ex15 to the next available display number 00 09 or exit the LOGO display programming procedure AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 10 NOTE The LOGO screen can be turned off but as it will no longer appear there is no way to access screen programming If the LOGO display is turned off for any reason it can be restored to allow access to screen programming by cycling the power to the RT Ex15 while pressing and holding the ENT button or maintaining the ENT magnetic switch This will reactivate the LOGO screen as DISPLAY 00 and re
20. lle WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 16 To program press and hold the ENT button or maintain the ENT magnetic switch The display will first show a P in the lower left hand corner and will then display the first program variable for this mode Three parameters will be accessed in order as follows OFFSET gt ANALOG POINT gt VALUE MAX MAs MA OFFSET This variable is used to set to lowest value for the mA output span and as a fine offset adjustment in the field if necessary The low range of the output span is programmable between 4 00 and 10 00 mA The RT Ex15 will not accept a value less than 4 mA The RT Ex15 utilizes the output device AD421 manufactured by Analog Devices The minimum output is trimmed to 4 00mA by the device manufacturer Consult the manufacturer s data sheet for AD421 for complete specifications regarding offset tolerance When entering or editing the value the digit being edited will blink starting with left most digit Select the digit to edit using the SEL button or magnetic switch Use the UP or DN button or magnetic switch to increment or decrement the variable value When the desired value is displayed use the ENT button or magnetic switch to store the programmed value and advance to the next variable ANALOG POINT This variable is used to point
21. n four digits regardless of decimal point position The largest acceptable value for KFR is 65535 with the decimal in any location For example A flow meter has a K factor 2053 57 imp Gal and the display should read in Gal Min with accuracy to three decimal places KFR 6000 2053 57 2 921741 for GPM Round off 2 921741 to three decimal places and enter 2 922 for KFR AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 12 When entering or editing the KFR value the leftmost digit will blink cursor Select the digit to edit using the SEL button or magnetic switch The cursor will move to the right and will wrap around The decimal point can be relocated when it is selected blinking Use the UP or DN button or magnetic switch to increment or decrement the variable value or move the decimal point Use DN to move the decimal point to the right UP to move it to the left When the desired value is displayed use the ENT button or magnetic switch to store the programmed value and advance to the next variable GATE Gate time This variable sets the sample time on the incoming frequency for the RATE A Gate Time displays This variable is programmed in tenths of a second and the allowable range is from 01 to 600 seconds This variable affects the update of the disp
22. ny 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 17 LIMITS Display Mode The 15 has two programmable limit outputs L1 amp L2 The LIMIT display shows the function that each limit is assigned to the value in engineering units at which each limit will become active or change state and the current status of the limit outputs The limit values are displayed using the KFR or KFT decimal location and engineering units corresponding to the limit assignment A typical display would be L RATE A GT GPD ON CYCLE OUT 10 GAL LIMITS Programming The Limits are programmed from the LIMIT display screen L1 and L2 can be assigned to any of the following functions RATE TOTAL RATE A CYCLE OUT Pulse Output RATE Limits Limit MARGIN To operate a limit based on RATE select a RATE function based on pulse length or gate time measurement The MARGIN variable is programmed in engineering units and determines whether the limit functions as an absolute limit or activates within a margin or window around the programmed RATE limit When the MARGIN is programmed as zero the limit will activate whenever the selected RATE equals or exceeds the programmed value When a MARGIN value other than zero is entered the limit will be active wheneve
23. ocations when mounted on an approved AW meter A large back lighted LCD graphic display provides easy to read indication of flow rate or total in user programmable engineering units Programming display mode selection or reset of the totalizer is accomplished using an attached magnet without opening the enclosure or using the pushbuttons on the faceplate with cover off An isolated input also allows for remote reset of the totalizer Programmable opto isolated NPN open collector outputs provide flowrate limit indication or a pulsed total output for remote monitoring and recording of totals A 4 20 mA rate output with user programmable filtering and scaling is also provided for remote indication A variety of sensor noses are available to provide compatibility with all AW Gear Meters RT Ex15 Ex options Swivel union available HART protocol available Specifications Power Requirement Customer supplied Temperature Ratings Class 2 24 VDC 200mA min Unit 40 to 60 C 40 to 140 F Ambient T6 Sensor Monitor Frequency Range 60 C 140 F Max Fluid Temperature 0 4000 Hz RT Ex15 Ex Certifications Analog Output 4 20 mA CSA 16 bit Isolated Loop Powered 2 Wire Output Class Division 1 Groups A D 24 Vdc Loop Supply Class Il Groups F Class 11 Max Load Impedance 500 Ohm 24V Max Load Impedance 250 Ohm 12V Connection Two Opto lsolated Open Collector Outputs Screw terminal strips 5 24 VDC Rating 50 mA Max Minim
24. ode changes reset of total and programming functions are accomplished using the buttons located on the face plate when the cover is off or external to the cover using the magnetic switches The magnetic switches are located at the 3 6 9 and 12 o clock positions on the side of the housing The function of each position is indicated on the faceplate of the RT Ex15 Ex Touching the side of the magnet wand to the appropriate location will activate the magnetic switches DISPLAY PROGRAM MING MAGNETIC SWITCH LOCATIONS BUTTON LOCATIONS MAGNETIC SWITCH MODE DN RESET UP MODE DN Va BUTTON BUTTON ewe 002 508 7 GT 003 23cm MAGNETIC RA 002 50 cep MAGNETIC TH SWITCH SWITCH AQ L ent TA 003 23 ca N VARNIN REMOVE ER BEFORE S2 SERVICING IT 56 SEL A P UP BUTTON BUTTON MAGNETIC TOUCH SIDE OF MAGNET TO SWITCH LOCATION SWITCH RESET UP Display mode changes reset of total and programming functions are accomplished using the buttons located on the face plate when the cover is off or external to the cover using the magnetic switches The magnetic switches are located at the 3 6 9 and 12 o clock positions on the side of the housing The function of each position is indicated on the facepla
25. or decrement each digits value When editing is complete and the desired value is displayed use the ENT button or magnetic switch to store the programmed value for L1 If a RATE assignment has been made the RT Ex15 will next prompt the user to enter the RATE LIMIT MARGIN in percent The left most digit will be highlighted with the blinking cursor Move the cursor using the SEL button or magnetic switch Use the UP or DN button or magnetic switch to increment or decrement each digits value When editing is complete and the desired value is displayed use the ENT button or magnetic switch to store the programmed RATE LIMIT MARGIN The RT Ex15 will then highlight the L2 indication with a blinking cursor Repeat the procedures used for L1 When the L2 programming is complete use the ENT button or magnetic switch to store the programmed values and exit LIMITS programming NOTE See Wiring Connections and Connection Diagram on page 3 for information regarding connection to limit outputs RATE A TOTAL A Display Mode RATE and TOTAL Job Total are viewed on the same screen using the RATE A display Rates and totals are displayed in the corresponding engineering units based on the programmed KFR and KFT factors and decimal locations The GR TOTAL can be viewed using the SEL button or magnetic switch to switch between TOTAL A TA display and GR TOTAL A GA display as illustrated below After a power cycle the RT Ex15 will revert to
26. r DN button or magnetic switch scrolls through the alphabet When the characters are all entered use the ENT button or magnetic switch to store the variable The RT Ex15 will exit the variable programming mode and return to the selected display STATUS ONE Display Mode The STATUS ONE screen displays the Rate A Total A and the analog output value in mA This screen is useful for set up or troubleshooting A typical display would be STATUS ONE RTA 02 500 TOA 0035 3 ANO 004 02 ANALOG OUT Display Mode The ANALOG OUT display mode displays the analog output command value in milliamps NOTE This is the commanded value not the actual value and under certain conditions some difference could occur between the displayed value and the actual mA output value The two digit number shown after ANALOG OUT indicates what the output represents In this case 00 indicates that the output represents RATE See the Analog Point parameter for more information regarding output assignment A typical display would be ANALOG OUT 04 02 mas ANALOG OUT Programming The signal assignment offset and scaling values for the mA output are programmable from the ANALOG OUT display screen The output can represent rate or total and the flow rate or total value represented by the maximum output is programmable Use the MODE DN button or magnetic switch to select the ANALOG OUT display AW Lake Company 8809 Industrial Drive Franksvi
27. r the selected RATE is within the window of the programmed RATE limit value plus or minus the MARGIN value TOTAL Limits To operate a limit based on the JOB TOTAL select TOTAL A for the Limit function The limit will activate whenever the selected TOTAL equals or exceeds the programmed value See BATCH TOTAL Display Mode on page 17 for alternate set up of total limits CYCLE OUT Pulse Output The CYCLE OUT limit function provides an incremental output signal for a remote totalizer typically at a lower resolution and frequency Either or both limits can be assigned to a CYCLE OUT function Assigning a limit to the CYCLE OUT function will toggle the state of the limit output whenever Job TOTAL A has incremented by the programmed cycle amount The output will remain on until the cycle amount has accumulated and turn off until the cycle amount has accumulated again as represented in the following diagram The total accumulated between a rising and falling edge is the cycle value The total accumulated between any two rising edges is twice the cycle value The cycle value is entered in engineering units corresponding to the programmed KFT and decimal location Do not program a cycle amount that will produce more than ten pulses per second 10 Hz Consider the maximum flowrate to determine the resulting output frequency The frequency produced in Hz is the actual flow rate in Engineering Units per Minute divided by 120 divided by the CYCLE
28. s a frequency input test point allowing the user to directly input a frequency signal This is especially useful for purposes of setting up and testing pulse output or analog output signals during commissioning when flow is not present or where it is not feasible to allow continuous flow for set up and calibration purposes The position of a programmable jumper must be changed to allow use of the test point input The test points and jumper positions are detailed in the diagram below Be certain to change the jumper back to the correct position before beginning normal operation using the sensor nose Test Point input specifications Waveform DC signal pulse square wave triangle or sawtooth Minimum signal amplitude 2 Volts peak Maximum signal amplitude 10 Volts peak Frequency 0 4000Hz MQ RESET ODE Y Test Point Test Point V me Signal Input Isolated Supply GT Common 002 50 N Program N Jumper K _ TA 003 23 ca ARNING REMOVE ER BEFORE CALIBRATION JUMPER 123 123 lt Normal Test Point Operation Operation Jump 1 amp 2 Jump 2 amp 3 AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 Display Programming Buttons and Magnetic Switches Display m
29. store access to LOGO screen programming RATE Display Mode The RT Ex15 continuously calculates rate by two methods simultaneously Gate Time and Pulse Width Gate Time RATE A Rate is displayed based on the number of pulses counted during a prescribed time period RATE A is updated at the programmed interval regardless of the input frequency Increasing the gate time interval produces a filtering or averaging effect useful for stable display and output of uneven or intermittent flows The RT Ex15 analog output is assigned to RATE A Pulse Width RATE A Rate is displayed based on the time from pulse edge to pulse edge The Pulse Width Method is highly responsive updating more frequently at high input frequencies and less frequently at lower input frequencies RATE A is useful for observing flow variations or peak intermittent flows A digital filter SAMPLE A can be used to produce a more stable display response RATE lt RATE A Gate Time Displays the rate by the gate time method based on the programmed GATE AB variable and displayed based on the corresponding KFR factors decimal locations and engineering units The zero cutoff frequency for display and analog output is 3 Herz The pulse length measurement RATE A can be viewed by using the SEL button or magnetic switch while in the RATE A display as illustrated below The rate display will revert back to RATE A if power is cycled to the RT Ex15 A t
30. switch to select the BATCH TOTAL display Press and hold the ENT button or maintain the ENT magnetic switch The display will first show a P in the lower left hand corner and will then highlight the first limit assignment S1 indicated with a blinking cursor Entering a value will assign the limit as a total limit based on the KFT decimal location and KFT engineering units Select the digit to edit using the SEL button or magnetic switch Use the UP or DN button or magnetic switch to increment or decrement the variable value When the desired value is displayed use the ENT button or magnetic switch to store the programmed value and move the cursor to S2 Select the digit to edit using the SEL button or magnetic switch Use the UP or DN button or magnetic switch to increment or decrement the variable value When the desired value is displayed use the ENT button or magnetic switch to store the programmed value and exit the BATCH TOTAL program mode If either limit has been previously assigned to a function other than TOTAL A the RT Ex15 will respond by asking Limit mode different want to change it Use the SEL button or magnetic switch to toggle a N or Y response and use the ENT button or magnetic switch to answer A Y response will reset any previous limit assignment to Total A and zero the limit value N response will leave the limit assigned to the previous function and the S1 or S2 display will read as XXXX to indicate
31. te are programmable using up to four letters Example GPM _ Initial default is HZ __ NOTE The engineering units display does not affect the scaling in any way and serves as nothing more than a label The rate scaling is performed in the KFR calculation The first left most character will be highlighted with the blinking cursor first The SEL button or magnetic switch moves the cursor and the UP or DN button or magnetic switch scrolls through the alphabet When the characters are all entered use the ENT button or magnetic switch to store the variable The RT Ex15 will exit the variable programming mode and return to the selected display AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 13 TOTAL Display Modes The RT Ex15 displays the JOB or GRAND total based on the programmed KFT engineering unit and decimal location There are two TOTAL displays TOTAL A Job Total and GRAND TOTAL A The GRAND total is a second totalizer with a secured reset Both totals are retained by the RT Ex15 when the power is removed The totals retained at power down are updated once every 25 seconds Due to this update interval the totals retained may not include previous flow for up to 25 seconds if flow was present when the power was removed TOTAL A DISPLAY Displays Job Total A Also used
32. te of the RT Ex15 Ex Touching the side of the magnet wand to the appropriate location will activate the magnetic switches Disable External Programming All programming is initiated by using the ENT button located on the face plate when the cover is off or external to the cover using the ENT magnetic switch when the cover is installed The ENT external magnetic switch can be disabled to prevent programming when the cover is on A jumper is located on the back of the main circuit board on the edge at the 9 o clock position If the jumper is set to disable the ENT magnetic switch the MODE and RESET external magnetic switches are still active to allow mode changes and total reset but program changes can not be made without removing the cover and using the ENT button on the faceplate The default is switch enabled ENABLE DISABLE EXTERNAL PROGRAMMING ENT MAGNETIC SWITCH ENABLED JUMP 1 amp 2 i C4 feels ENT MAGNETIC SWITCH DISABLED JUMP 2 amp 3 ENABLE DISABLE EXTERNAL PROGRAMMING JUMPER ON BACK OF MAIN CIRCUIT BOARD AT THE EDGE IN 9 O CLOCK POSITION SEE DETAIL DETAI L AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6
33. that it has no function in this mode AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 5 Quick Guide to RT EX15 To view displays Use MODEIDN button or magnetic switch LOGO DISPLAY PROGRAMMING With the cover removed and outside of a hazardous area use MODE UP apat LOGO Screen se SEL button or magnetic switch Press amp hold ENT button or magnetic switch to program displays view oe VG alternate display isplay Press and hold the KFR A VALUE a KFR A VALUE button Display will first show in eneas KE PATEA gt RATED siren the lower left hand corner and then ENGUNITSA GPM GPM ENG UNITS A show the display assigned as DISPLAY 00 LOGO is assigned as KFR A VALUE SAMPLE A RATEA RATEA 7 VALUE KFT A VALUE TOTALA TOTAL A ENG UNTSA 0035 3 ou 05687 6 GR TOTAL A 0568 7 STATUS ONE 00353 I ANO 004 004 02 00 OFFSET ANALOG OUT ENT RATEAPL 01 E TOTALA o KO 04 02 mas DISPLAY 00 to allow programming access Use SEL button to select from available display modes including OFF Press ENT button to store selection increment display number and show the next display assignment MAGNETIC SWIT
34. the Job Total TA display Total A can be reset from this display using the RESET UP button or magnetic switch Typical displays would be RA 002 50 crp 003 53 cat The RAT A TOT A display is only for viewing the rate and total simultaneously and has no programming function Rate and Total variables are programmed from RATE RATE and TOTAL A screens respectively AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 19 BATCH TOTAL Display Mode The BATCH TOTAL displays the JOB A total and the S1 amp S2 total limit activation levels When the RT Ex15 is programmed for BATCH TOTAL operation both limits are assigned as TOTAL A limits based on the KFT decimal point and engineering units The TOTAL limit activation levels are displayed unless assigned to another function If so the S1 or S2 display would read as XXXX to indicate that it is not assigned to JOB A TOTAL function A typical display would be BATCH TOTAL 0020 5 ca 1 0040 0 S2 0045 0 BATCH TOTAL Programming The BATCH TOTAL program mode is used to quickly dedicate both limits as total limits and program the values at which the limits labeled S1 amp S2 will activate The BATCH TOTAL display must be viewed to program the BATCH TOTAL limits Use the MODE DN button or magnetic
35. to an output assignment for the analog output The output can be assigned to represent one of 3 possible functions as follows RATE 00 RATE A 01 TOTAL A 02 A number corresponding to the output assignment is displayed to indicate the current function of the analog output The default assignment for the ANALOG POINT is RATE A ST 00 RATE or TOTAL assignments will produce an output ranging from the MA OFFSET value 4 10 mA for a zero value to 20 mA for the maximum programmed flow rate or total Use the SEL button or magnetic switch to select the output assignment Use the ENT button or magnetic switch to store the desired output assignment ENTER VALUE AT MA S This scaling variable is used to set the maximum mA output 20mA to a corresponding rate value producing an output ranging from the MA OFFSET value 4 10 mA for a zero value to 20 mA for the maximum programmed flow rate The entry will correspond with the KFR decimal location and engineering units for RATE The initial value is a rate of 10 HZ When entering or editing the value the digit being edited will blink starting with left most digit Select the digit to edit using the SEL button or magnetic switch Use the UP or DN button or magnetic switch to increment or decrement the variable value When the desired value is displayed use the ENT button or magnetic switch to store the programmed value and advance to the next variable AW Lake Compa
36. um Load 34 NPT Conduit Entrance Impedance Required 480 Ohm 24 VDC Opto Isolated Reset Input Input and output signals to be supplied by a Class 2 5 24 VDC Input 3 3Kohm Impedance power supply RT Ex15 Ex Dimensions 10 5 in UNIT W SWIVEL AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 Special installation instruction for use in hazardous area environments MODEL RT Ex15 Ex SER T1500 File 220043 CLASS 2 24Vdc 200 MAX CL DIV 1 GR A B C D CL II GR E F G CL 1 AMBIENT TEMP 40 C 60 MWP 103 4 MPa 15ksi or 34 4 MPa 5ksi An explosion proof seal is required within 450mm 18 inches of the enclosure Un joint anti deflagrant est exige a moins de 450mm 18 pouces de cloture The RT Ex15 Ex shall be used with JVM Ex JVS Ex or JVHS Ex flowmeters and installed in accordance to intallation manual See instructions amp installation manual for additional electrical ratings and warnings Voir les instructions et le manuel d installation pour des estimations electriques et des avertissements additionnels Figure 1 RT Ex15 Ex name plate The RT Ex15 Ex unit is an explosion proof local display which may be used in Class I Division 1 locations Above is a sample of the name plate that should
37. xplosion proof rating make sure the 3 8 NPT male portion of the sensor is engaged by a minimum of 5 threads into the flowmeter NOTE It is strongly suggested to use anti seize grease on threads prior to installation to avoid galling When wiring the unit please make sure to observe any national or local codes that may be required An explosion proof seal is required within 18 inches 450mm of the enclosure If installed in a Class I Division 2 area an explosion proof seal is still required within 18 inches 450mm of the enclosure according to Class I Division 1 installation requirements Make sure units are powered by a Class 2 power supply for proper regulation Removal of the external housing ground terminal is not permitted for safety reasons Please make sure to follow local electrical code practices when installing equipment in hazardous areas AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 Wiring Connections Wiring connections are to terminal strips inside the rear cover A 32 NPT wire exit for conduit connection is provided Connection to conduit is required to maintain the enclosures explosion proof rating and must be made in accordance with all local and national electrical codes TO PREVENT IGNITION OF HAZARDOUS ATMOSPHERES DISCONNECT CIRCUITS BEFORE REMOVING C
38. ypical display would be 002 50 RATE Pulse Length The rate is calculated by the pulse length method based on the SAMPLE A variable and displayed based on the corresponding KFR factor decimal location and engineering units The gate time measurement RATE A be viewed by using the SEL button or magnetic switch while in the RATE A display as illustrated below The rate display will revert back to RATE if power is cycled to RT Ex15 A typical display would be 002 50 GPD AW Lake Company 8809 Industrial Drive Franksville WI 53126 web www awgearmeters com T Tel 262 884 9800 amp Fax 262 884 9810 7 Email awinfo aw lake com RT Ex15 Ex manual rev 6 13 11 docx Revision 3 3 10 11 RATE Mode Programming The Rate parameters are programmed from the RATE or RATE display screen RATE A variables can also be programmed from the RATE A ST screen or vice versa by toggling to the RATE A mode using the SEL button or magnetic switch Use the MODE DN button or magnetic switch to select RATE lt display Press and hold the ENT button or maintain the ENT magnetic switch The display will first show a P in the lower left hand corner and will then display the first program variable for that rate display mode Three parameters will be accessed for either mode as follows RATE 9 RATE KFR VALUE KFR A VALUE gt
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