Mnit_001

INVALCOJanuary 1, 1999 Meter Mounted Rate/Totalizer Installation/Operation Manual Bulletin MNIT001 Model 505 Table of Contents Introduction................................................................................................................................2 Specifications................................................................................................................................2 Model Number Designation..............................................................................................................................2 Operation..................................................................................................................................2 Intrinsic Safety Considerations............................................................................................................................3 Programming Overview..........................................................................................................................................3 Program Steps.................................................................................................................................................3 Calculation of Rate and Total ..............................................................................................................................4 Total Conversion..............................................................................................................................................4 Filtering................................................................................................................................4 Simplified Setup for Model 505...........................................................................................................................5 Battery Powered Version..................................................................................................................................5 4-20mA Output Version.......................................................................................................................................6 DC Power Version............................................................................................................................................7 Flowmeter Input..............................................................................................................................................7 Installation........................................................................................................................................................9 Intrinsic Safety Connections...........................................................................................................................10 505 Settings for Cubic Meters/Day..........................................................................................................................11 Dimensions..............................................................................................................................................12 1 Issue/Rev. 0.2 s (1/99) FMC INVALCO Fluid Control s P.O. Box 1377 s Stephenville, Texas 76401 s Telephone: 254/968-2181 s FAX 254/968-5709 s Toll Free: 800/468-2526 Low/Low. 3 Explosion-proof MMT Enc. optional wall mounting kit available Enclosure Polycarbonate. Accuracy 0.33” (8.5mm) high K-Factor Programmable. Optional NiCad Batter pack (1/2 life-span) Battery Life 2 to 3 years (dependant on % of time the instrument is totalizing flow) Loop Powered 4-20mA Output Version Scale The 4mA and 20mA points are programmable. Sinewave (20mV P/P min). Optional Explosion-proof Cls. a re-settable total and an accumulated total directly in engineering units.999 Timebase Rate displayed in units per second. Grp C&D Approvals Battery operated version/Intrinsically safe to Class 1. 7 Weatherproof MMT Enc. . Pulse.5% of range Connection Two wire Voltage Input 18 to 28 VDC (16 VDC voltage drop) Memory Backup Long life battery Specifications General Specifications Display Continuously powered LCD Resettable Total 7 digits. or High/High contacts based on rate of flow Switching Power 200mA. The instrument is compatible with a wide range of flowmeters and a DIP switch on the input board enables the circuit to be configured for millivolt signals. 30 VDC Maximum Voltage Input 12-28 VDC at 8mA Maximum Memory Backup Long life battery Model Number Designation Model 505T Mounting 2 Weatherproof Wall Mount Enc. 4 Weatherproof MMT Enc. CENELEC Approval: KEMA 2 Operation The Model 505 Rate Totalizer will display: Rate Resettable Total Accumulated Total Both the Rate and Resettable Total are continuously displayed while the Accumulated Total is only displayed when the ACCUM TOTAL key is pressed. others DC Power/Alarm Version Outputs Two open collector. pulse trains and most other signal types. or day Frequency Range 0-5000 Hz Input Signal Switch settable. 0. Three different versions of the instrument are available: Battery Powered Version Loop Powered Version DC Powered Version with high and low flow alarms The Model 505 is fully programmable with K-Factors. 0. Issue/Rev. The instrument is housed in an attractive polycarbonate enclosure which is completely watertight and which enables it to be mounted directly on a flowmeter or wall mounted using a special universal bracket. Div.2 to 29.Introduction The Model 505 Rate/Totalizer is designed to accept frequency or pulse inputs from a wide range of flowmeters and to display flowrate. 0. minute. 1. resettable from the front panel Accumulated Total 7 digits (as above). Div. reed switches.2 (1/99) . filter constants and timebase being programmed via the front panel switches. 1. decimal point positions. Reed Switch. with Swivel Power/Options 0 Lithium Battery Powered 1 Loop Powered 4-20mA 3 DC Powered with Alarms 4 DC Powered with input frequency retransmission Physical Specifications Operating Temperature 0°F to 160°F (-20°C to 70°C) Mounting Meter mount standard. hour. High/Low. meets Nema 4X and IP67 standards. Specifications (cont) Battery Powered Version Battery Type Two Lithium Battery packs. CSA/FM approval applied for. fully programmable.4” (10mm) high. The Resettable Total can be reset at any time by pressing the RESET key. 1 Grp C&D. Not resettable Rate 4 digits. pulses per unit of measure. 000 if totals and rate are in the same engineering unit. By removing the front section of the enclosure which contains the main processor board and batteries. 2. Frequency Divider This calibrates the Model 505 to a specific frequency range where: 1 = . The Total Conversion Factor enables the rate to be displayed in one engineering unit and the totals to be displayed in another engineering unit. Display Test .The instrument also has a test mode which can be entered by simultaneously pressing all three front panel keys. 2. Set to 1. The Scaling Factor can be programmed in the range of 0. Enter number of places. 1. or day. CSA/FM approval has been applied for and will be offered as the standard configuration when available. 0. Program Steps Step CAL 1 Comment Scaling Factor . Low Alarm .999.25 to 5KHz Decimal Point Placement for Rate Display The flowrate can be displayed with 0. Issue/Rev. CAL 2 CAL 3 CAL 4 CAL 5 CAL 6 Programming Overview The Model 505 is fully programmable with all parameters being stored in memory. 1. pulses/gallon. If a 4-20mA option is installed. the dark grey strip along the bottom of the enclosure) and replacing it after rotating 180°.e. the output will go to 20mA. the high alarm output (if installed) will go low.21 Model 505i. the PROGRAM key is pressed to enter the Program Mode.20 Model 505i. Decimal Point for Total Display The totals can be displayed with 0. all segments of the display will show.). The filter value is programmed between 1-99 where “1” represents no filtering and “99” is maximum. Up to nineteen CAL steps are accessible. the instrument must be installed according to the guidelines given in the Intrinsic Safety Connections Section and in accordance with standards for wiring and installation in hazardous areas. The tests are as follows: Lo Test . hour.By pressing the RESET key. To exit the test mode.Whole numbers (K-Factor) The Scaling Factor is the pulses per unit of measure (i. depending on which options are installed. simultaneously press the RESET and PROGRAM keys. Hi Test .Digits to the right of the decimal point.Whole Numbers Intrinsic Safety Considerations At the date this manual was issued. Once removed. The versions which have certification are: Model 505i. The Program Mode can be entered in one of two ways: 1. Total Conversion Factor .e.41 CENELEC Approval: Kema SAA Approval: Ex 2003x Type of Protection: Ex ia Group: IIB Temperature Class: T4 at ambient temp.25 to 500 Hz 2 = . or 3 decimal places. If a 4-20mA option is installed.Digits to the right of the decimal point. By removing the lower cover strip (i. Enter: 0 = second 1 = minute 2 = hour 3 = day Filter Fluctuations in the flowrate can be filtered out so that the Rate and 4-20mA transmission (if used) are held steady. or 60°C When installing in hazardous areas.By pressing the ACCUM TOTAL key. press the ACCUM TOTAL key and while still holding. Timebase for Rate The Rate can be displayed in units per second.By pressing the PROGRAM key. 3 . the output will go to 4mA.40 Model 505i. This brings a small magnet on the inside of the cover strip in contact with a reed switch inside the instrument. pulses/barrel etc. Scaling Factor .Whole Numbers Total Conversion Factor . minute. two versions of the Model 505 were certified for use in hazardous areas to both CENELEC and Australian Standards. the low alarm output (if installed) will go low.2 to 29. The CAL number is displayed on the lower display and the parameter is displayed on the upper display.2 (1/99) CAL 7 CAL 8 CAL 9 CAL 10 A Operation (cont) The PROGRAM switch is used to step through the program (CAL sequences) and the A and keys on the front panel are used to change and increment the flashing digits. or 2 decimal places. The program key is then pressed to enter the Program Mode. The Scaling Factor. CAL 16 and 17 represent the flow rate at which the output will reach 20mA. CAL 12 CAL 13 CAL 14 CAL 15 The Scaling Factor is always programmed in the unit relating to Rate. Total Conversion The Total Conversion feature enables the rate to be displayed in one engineering unit (i. The Scaling Factor would be programmed as pulses per gallon. Some common units are given below together with the Total Conversion constant which should be programmed.e.9999.01 and 2000. The timebase is programmed separately during Programming. 4 Issue/Rev. S. The user programs the Scaling Factor and selects the timebase during the Programming procedure. 3600 for hours and 86. The Flow Computer has a digital filter which will average out these fluctuations and enable the Rate to be read to four digit accuracy. 0.Digits to the right of the decimal point. is equal to the K-Factor of the flowmeter expressed in pulses per unit volume. The ability to select a suitable filtering level means that highly accurate and stable readings can be obtained without excessive lag. The diagram below shows a pulsating signal input together with the effect of filtering.Whole numbers High Alarm . minute. Communication Parameter Not currently used.Program Steps (cont) Step CAL 11 Comment Low Alarm . The timebase would be programmed as minutes.000 Liters/ Kiloliters 1000 ml/ Liters 1000 Mgallons/ Acre-feet 0. The value can be programmed in the range 0 to 49. The Total Conversion Factor is programmed as 42 (there are 42 gallons in a barrel).Digits to the right of the decimal point. High Alarm .Digits to the right of the decimal point. Identification Number Not currently used. For example: If the Rate is required in gallons per minute: 1. 60 for minutes. H is the timebase of rate and is 1 for seconds. 4mA Output Value .Digits to the right of the decimal point. CAL 16 CAL 17 CAL 18 CAL 19 Filtering (Dampening) Frequency fluctuations caused by pulsating flow through a flowmeter. CAL 14 and 15 represent the flowrate at which 4mA will be output (only displayed on the Loop Powered version.Whole numbers 20mA Output Value . S is the Scaling Factor. is calculated as follows: R= fxH S where: f is the input frequency in Hz.400 for days. If the Totals are required in barrels: 3. hour or day.2 (1/99) . gallons/minute) and the totals to be displayed in another engineering unit (i. barrels). All totals will now totalize in barrels.Whole numbers 4mA Output Value . When the Rate is retransmitted via the 4-20mA output. often makes the Rate impossible to read with any precision. Calculation of Rate and Total The flowrate. the filtering will also average out any fluctuations on the output. If the high and low alarms are not installed.) 20mA Output Value . The Total Conversion factor affects the resettable and accumulated totals and is limited between 0. 2. Rate* Totals TOTCON Gallons (US)/ Barrels (oil) 42. R. and the Total Conversion constant is a division factor which can be used to convert the totals to the different unit. CAL 12 and 13 program the flowrate above which the high alarm relay will close.999.e.32587 * Units per second. these parameters can be ignored. CAL 10 to CAL 13 are displayed regardless of whether the high and low alarms are installed. Response to a step Input (in seconds). CAL 3 CAL 4 CAL 5 Table 1. enter 0. min. Remove gray strip at bottom of 505. Unit will go into Operational Mode.hr. Set to 10 for 2" and smaller meter. is the filter constant which is programmed during the Programming routine. 1 . enter 1 or 2 for the number decimal places desired. 3 . CAL 1 CAL 2 Enter Meter K-Factor. Do you want the total readout to be in gallons? If so. New batteries can be purchased through INVALCO or our distributors and replaced in the field.day Enter a number from 1 to 99 to smooth out flow rate reading fluctuations. It is required to display the flowrate in Gal/min with 1 decimal point and the total in Gallons with no decimals. hrs. Example: A flowmeter produces 208.'s) 4mA Output Value (Decimals) 20mA Output Value (Whole No. If not.2 (1/99) . Press Program key. Set to 0. Set to 1 for 3" and larger meters. Press Program key.min. The instrument is then programmed as follows: CAL 1 CAL 2 CAL 3 CAL 4 CAL 5 CAL 6 CAL 7 CAL 8 CAL 9 CAL 10 CAL 11 CAL 12 CAL 13 CAL 14 CAL 15 CAL 16 CAL 17 208 5380 1 1 1 01 0 0001 0000 00000 0000 00000 0000 00000 0000 00500 0000 Scaling Factor (Whole Numbers) Scaling Factor (Decimals) Frequency Divider Rate Decimal Position Timebase Filter Disabled Total Decimal Position Total Conversion (set to 1.. CAL 6 Value 1 2 4 6 10 15 20 25 35 45 60 75 90 99 90% 0 1 2 3 5 8 11 14 20 25 34 43 52 57 99% 0 2 4 6 11 17 22 28 40 51 69 86 103 113 Simplified Setup for Model 505 1. Press Program key. Do you want Flow Rate to be displayed with decimals? If no. Failure to do so may result in loss of setup parameters. CAL 6. Press Program key.0000) Total Conversion (decimals) Low Alarm (not installed) Low Alarm (not installed) High Alarm (not installed) High Alarm (not installed) 4mA Output Value (Whole No. Reinstall.sec. for different values of CAL 6. There are two battery packs in each instrument and care must be taken to replace only one pack at a time so that there is always power connected to the memory. 0. Press Program key. Remove strip and swap is end for end. enter 0000. If you want total to be in barrels. Battery Powered Version The battery powered version of the Model 505 is designed for operation in the field without external power sources.538 pulses per Gallon and has a maximum output frequency on 1200Hz.. A 4-20mA output is installed and 4mA is to represent 0 GPM and 20mA is to represent 500 GPM. enter 1. 2. Swap it end for end. Insert screwdriver blade under end of dark gray strip at bottom of 505 and pry up. Press Program key. Set to 0. Press Program key. Set to 0. 5 Issue/Rev. Set to 0. Lithium batteries provide sufficient power to operate the instruments for up to 3 years and the operator is warned of a low power condition by a message on the LCD display. Press Program key.'s) 20mA Output Value (Decimals) CAL 7 CAL 8 CAL 9 CAL 10 CAL 11 CAL 12 CAL 13 4. If yes. or days? 0 . Set to 0. Reinstall.As a guideline to the degree of filtering to be used. Unit will go into calibration mode. Press Program key. or 3 for number of decimal places to be shown. 2 . 3. 2. Do you want total to read out in decimals? If no.. Press Program key. the following table shows the response to a step change in input. Will Rate to be in secs. 1 is minimum and 99 max. See Chart below. enter 0. Unit is ready. enter them. The times for the display value to reach 90% and 99% of full swing are given in seconds. set to 42. CAL 6 Note that if CAL 6 is set to 01 there is no filtering of the input signal. If yes. Press Program key. Press Program Key Does K-Factor have numbers after the decimal? decimal? If so. The value. set to 1. Hence. If external power is required to power the sensor (i. Namur switches. the power supply delivering the external power must be isolated from the 4-20mA loop supply. The instrument draws its operating power from the 420mA loop and uses a Lithium Battery for memory backup.5% of Span Voltage Drop across terminals 7 & 8 16 VDC max. +VDC 0 VDC 3 3 + Supply Load Receiving Instrument Connection to a Sensor requiring External Power +VDC GND 3 Isolated Supply RF or Half Effect Pick-up 3 8 + Model 505 4 7 - Supply Load Receiving Instrument RF or Half Effect Pick-up Model 4 8 505 7 - 6 Issue/Rev. Both the 4mA and 20mA points are fully programmable so that the output can span across the entire operating range or. all sensors must be self powering (such as reed switches and coils). it is not isolated from the input. The response rate of the output is very fast. Typical Connection 8 + Magnetic Pick-up or Reed Switch Model 505 7 - Supply Load Receiving Instrument Specification: Digital to Analog Converter 10 bit Accuracy 0. 0.5 seconds Maximum Voltage across Output 28 VDC Since the 4-20mA output is designed to provide power to the Model 505. Response (4mA to 20mA) 0. across a small section of the operating range. Hall Effect sensors or opto-sensors).e. alternatively.4-20mA Output Version The 4-20mA output provides a two wire retransmission of the flowrate.2 (1/99) . making the instrument suitable as a frequency to current converter in closed loop systems where a fast response is normally required. the high alarm switches on whenever the flow exceeds the high setpoint. Typical Connections Flowmeter Input The Model 505 has an input conditioning circuit which will accept signals from most pulse or frequency producing flowmeters. For a coil. lights or audible alarms. Specification for Alarm Output Maximum Current (sink) 200mA Maximum Voltage 30VDC Voltage across Output when in the “On” state 2.2 volts and a “high” voltage of greater than 1.4 volts. Accordingly. They can sink up to 200mA and can be used to power external relays. The instrument uses a Lithium battery for memory backup capable of maintaining memory for long periods.DC Power Version The DC Power version will operate from an external power source between 12-28 VDC and draws no more than 8mA. the input switching threshold is 1. The outputs are internally protected against voltage spikes caused by relays and coils.3 volts. The input will interface directly to: Turbine Flowmeters Open Collector Outputs Reed Switches Logic Signals Two Wire Proximity Switches For pulse or logic type signals. Separate input terminals are provided for the coil input so that high inductance values can be handled. The switching points can be programmed during the setup mode and the low flow alarm will switch on whenever the flowrate drops below the programmed flowrate. The following are examples of interconnection to various signal outputs. All inputs are protected for over voltage up to 25 volts. Similarly. A six position DIL switch on the rear panel enables the input circuit to be configured for different signal types. while maintaining the intrinsic safety of the system.0VDC Isolation Both outputs are separately isolated. and a circuit diagram of the input is also provided. the minimum input voltage is 20mV P-P.2 (1/99) 7 . Both outputs are separately isolated via opto isolators. the input signal must have a “low” voltage of less than 1. Open collector outputs are also provided for high and low flowrate alarms. 0. Issue/Rev. Positive displacement flowmeters with reed switch outputs. Open-Collector with 100K ohm internal pullup resistor.3 volts. 5. This will eliminate the effect of switch bounce. Note: For a switch or reed input with contact bounce. as detailed in the Version Section. while limiting the input frequency to 200 Hz.External DC Power with 10K ohm pullup resistor. Millivolt signal from turbine or paddlewheel (20V PP minimum) 3. S4 can be switched “on”. Reed Switch .Battery Powered with 100K ohm internal pullup resistor.g. Issue/Rev. Reed Switch . 2. Namur Proximity Switch e. the supply to the Proximity Switch must be isolated. Note: For a switch or reed input with contact bounce. while limiting the input frequency to 200Hz.2 (1/99) . 6. 8 Note: If a 4-20mA output is installed. CMOS or Pulse 4. S4 can switched “on”. Switch Settings Switch Settings Switching Threshold Voltage is 1. This will eliminate the effect of switch bounce. Squarewave. 0.Flowmeter Input (cont) 1. Coils (Magnetic Pick-up) Use shielded cable e.g. ensure that the front panel is aligned at both connector points before tightening the screws. NiCad batteries should not require replacement. only one battery pack should be replaced at a time so that there is always one pack connected to power the memory. the dark plastic strips on the front) by levering a screwdriver under one end. The Main Electronics The front section of the housing contains the microprocessor. batteries and display. Remove both the top and bottom cover strips (i. 0. The bracket should be attached to the wall using round head screws (do not use counter sunk screws). but they may need to be charged for a short period before they will provide effective backup to the memory. Adjacent to this control is a RESET switch which can be used to reset the microprocessor. The DISPLAY CONTRAST control is shown below and this can be adjusted for optimum contrast. Undo the seven screws retaining the front. The instrument is then attached to the bracket at the bottom with two screws (see diagram below). When replacing the Lithium battery packs. Replacing the front panel of the instrument is the reverse procedure. Removing the Front Panel The front of the instrument is removed as follows: 1. However.e. Terminal Designations All Versions 1 Coil Input 2 Coil Input 3 Pulse Input (+) 4 Pulse Input (-) 4-20mA Output 7 4-20mA (-) 8 4-20mA (+) DC Power Versions 7 DC Power 0V 8 DC Power +12 to 28 VDC 9 Low Alarm (+) 10 Low Alarm (-) 11 High Alarm (+) 12 High Alarm (-) 2. It is also possible to adjust the display contrast via a small potentiometer on the board.2 (1/99) 9 .Installation Wall Mounting A wall mounting bracket is supplied with each instrument. Issue/Rev. 3. The bracket is mounted with the “tray section at the bottom. Pull the front panel free from the housing. Note that the screws should not be removed from the front panel as they are retained by O-rings. Note that pressing this button will reset all Setup Parameters and set all totals to zero. the wiring and installation must comply with appropriate installation standards. including cabling is: Cext = 60uF Lext = 1. The Model 505i will connect directly to a turbine flowmeters or paddlewheel with a certified I S coil or other certified I S sensors which produce a pulse output.Intrinsic Safety Connections When installing the Model 505i in hazardous areas.5H The internal capacitance and inductance of the Model 505 seen on the input are negligibly small and the maximum voltage and current produced by the Model 505 on its inputs (terminals 1 to 4) are: Uo = 10. to barriers with the specified parameters.2 (1/99) . are entity approved intrinsically safe without the need for barriers. Barriers needed. Only when outside power is applied are certified I. which can be classed as “Simple Apparatus” as defined in the CENELEC standard EN50020.0mA (short circuit) Devices such as reed switches. 0. and an associated apparatus type approval for the 4-20mA output. only be connected as shown on the following page. provided they do not exceed the following input parameters: Ui = 24V Ii = 20mA Pi = 320mW Intrinsically Safe Operation The maximum allowed capacitance and inductance of the pulser or coil. The 420mA output must. Typical Wiring Diagram for 4-20mA Current Loop Typical Wiring Diagram for Namur Proximity Detector *Note: Base units. battery powered.S. The approval uses entity parameters on the input for connections to the flowmeter. therefore. can be connected to the Model 505 without certification. 10 Issue/Rev.0 volts (open circuit) Io = 9. Conversions: 1 gpm = 3. 0.505 Settings for Cubic Meters/Day If the K-Factor is above 29.44 M3/DAY 1 Day = 1440 Minutes Shifted K = K-Factor (P/G) / (1.999 pulses per cubic meter.785 lpm 1 lpm = 1. Sample: 1” Meter (CAL 01 & CAL 02) (CAL 05 = 1 FOR MINUTES) (CAL 08 = 1440) K = 873 P/GAL Shifted K-Factor = 160.2 (1/99) 11 .12153 Equivalent K-Factor (P/L) = 169.44 * 3.5288 Shifted K-Factor = Set the 505 for Minutes Set Total Conversion to 1440 MIN/DAY The 505 will now display rate in M3/DAY and Total M3.1717 (CAL01 = 00160 and CAL 2 = 1717) Set the 505 for Minutes (CAL 05 = 1 for Minutes) Set Total Conversion to 1440 MIN/DAY (CAL 08 = 1440) Issue/Rev. (M3/DAY and a corrected total for cubic meters (M3). then the time base can be shifted to allow the 505 to display rate in cubic meters per day.785) = K-Factor / 5. The alarms and 4-20mA should be set in M3/DAY.4504 924 Enter the K-Factor in P/GAL: 244. The specifications contained herein are subject to change without notice and any user of said specifications should verify from the manufacturer that the specifications are currently in effect. TX 76401. 0. Toll Free: 800/468-2526 Printed in U.2 (1/99) 12 Issue/Rev. each independently dimensioned from respective engineering drawings. 0. Box 1377.Dimensions Inches (mm) Standard Weatherproof Meter Mount Connection (Wall Mount Enclosure .A. FAX: 254/968-5709. the manufacturer assumes no responsibility for the use of specifications which may have been changed and are no longer in effect. Phone: 254/968-2181. Stephenville.2 (1/99) . © 1/99 FMC INVALCO All rights reserved. Issue/Rev.Ignore Mounting Stem) Optional Swivel Mount Connection (Weatherproof Enclosure Only) Explosion-proof Meter Mount Connection Note: Dimensions .O. Otherwise.S.Inches to the nearest tenth (millimeters to the nearest whole mm). FMC INVALCO Fluid Control P.

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