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414L-M-V3

4. TEMPERATURE

COMPENSATION

Temperature compensation gives the instrument the capability to correct

for changes in volume of the measured liquid with temperature. There

are three methods of compensation which can be selected.

1. Density correction for general liquids with known temperature

density characteristics. A five point temperature-density curve can

be programmed and the MASS flow calculated

2. Volume correction for general liquids using a thermal coefficient

of expansion with temperature. This method is useful for

correction to a base volume over relatively small changes in

temperature.

3. Correction for Petroleum Liquids to US and International standards

for a wide range of petroleums, to a base temperature of 60°F/15°C.

4. Correction for LPG to US and International standards, to a

base temperature of 60°F/15°C.

4.1 TEMPERATURE INPUT (RTD OR 4-20mA)

The Model 414L is available with either a PT100 Platinum RTD input or with

a 4-20mA input. The input option must be specified on ordering.

The temperature inputs are continually checked to ensure that they are

within the specified limits and an Input Error will be displayed as "Err 12" if

the 4-20mA input drops below 3.5mA or if the RTD resistance is outside the

valid resistance ranges.

Temperature Compensation

Содержание 414L

Страница 1: ...414L M V3 BATCH CONTROLLER MODEL 414L September 2013 ...

Страница 2: ...414L M V3 ...

Страница 3: ... and Quadrature Inputs 22 3 4 Calculation of Rate and Total 23 3 4 1 Frequency Input 23 3 4 2 Analog Input 24 3 4 3 Filtering 25 3 5 Total Conversion 27 3 6 Non Linearity Correction 28 3 7 The Output Pulse and Flow Alarm 30 4 Temperature Compensation 32 4 1 Temperature Input RTD or 4 20mA 32 4 2 Volume Correction for General Liquids 34 4 3 Density Correction for General Liquids 36 4 4 Compensation...

Страница 4: ...ring the Batch Parameters 55 6 3 Programming Options 57 6 4 Checking the Input Signal 59 7 Input Circuits 61 7 1 Flow Inputs 61 7 1 1 Frequency Inputs 61 7 1 2 Analog Flow Inputs 67 7 2 Temperature or Density Input 68 7 3 Remote RUN and STOP Switches 70 8 Installation 71 8 1 General 71 8 2 Wiring Designations for the Model 414L 73 8 3 Ex 410 Enclosure Dimensons 74 9 Trouble Shooting 75 9 1 Error C...

Страница 5: ...vided where it is required to ensure the integrity of the flow signal or to measure bi directional flow Two versions of the instrument are available the Model 414LR with direct RTD input and the Model 414LA with a 4 20mA temperature input Both have two relay outputs capable of handling up to 5 Amps The Model 414L offers the following temperature compensation 1 Density Correction A five point tempe...

Страница 6: ...sure flow but the compensation is limited to density correction using a temperature input or to a direct input from a density meter Volume correction is not possible with a differential pressure device This instrument conforms to the EMC Directive of the Council of European Communities 89 336 EEC and the following standards Generic Emission Standard EN 50081 1 Residential Commercial Light Industry...

Страница 7: ... 0 E B C B for Backlight E for 220 240 VAC A for 110 120 VAC D for DC Power Only Temperature Options R for RTD input 0 for no option A for 4 20mA 2 for RS232 422 485 Mounting 1 for panel mounting 2 for field mounting 3 for explosionproof The Model Number of the instrument is displayed on first entering the Calibration Mode see Section 6 Introduction 5 C for Conformal Coating ...

Страница 8: ...imensions 5 7 144mm wide x 2 8 72mm high x 7 0 178mm deep Cutout 5 5 139mm wide x 2 6 67mm high Frequency Input Frequency Range Minimum 0 25Hz on Rate 0Hz on Total Maximum 10KHz for a single input 2 5KHz for a quadrature input Input Circuits Will accept most sine logic and proximity switch inputs see section 7 1 1 Scaling Range 0 1000 to 50 000 RTD Input Model 414LR Temperature Measurement Range 1...

Страница 9: ...Maximum Switching Voltage 250VAC 30VDC Maximum Switching Current 5 Amps Pulse Output Pulse Width 10mSec negative going pulse Maximum Duty Cycle 49 pulses per second Scaling The pulse output is scaled and outputs one pulse each time the accumulated total increments Non linearity Number of Points 10 correction points maximum Correction between Points Linear interpolation used Specification 7 ...

Страница 10: ...on to API ASTM Tables as follows Crude Tables 24A and 54A Gas Jet Oils Tables 24B and 54B Lube Oil Tables 24D and 54D Accuracy 0 075 Temperature Range 100 C to 200 C 148 F to 392 F Volume Correction for General Liquids Correction to any base temperature using a constant co efficient of volume expansion Accuracy 0 05 Temperature Range 273 C to 200 C 459 F to 392 F Density Meter Input A density mete...

Страница 11: ...sions of the instrument are available and have the following features Model 414LR Temperature Input directly from a PT100 RTD Frequency Input from a single flowmeter with a single or dual frequency output The dual frequency unit termed Quadrature is often required in custody transfer applications to ensure the integrity of the flow signal and to measure bi directional flow Operation 9 RS232 422 Op...

Страница 12: ...ircuit to be set to interface with a wide range of flowmeters including turbine flowmeters and flowmeters with Namur type sensors 10 Operation RS232 422 Option Relays RS232 422 Output P C E O B Control Relay Outputs 2 Pulse Output Flow Alarm DC Input Power DC Power Ground DC Power Output to Sensors 110 220V A C Ma i ns 4 2 0m A 4 2 0m A Temperature Input Analog Flow Input Pulse Input Channel 2 Sig...

Страница 13: ...dicating that it can be changed Press 2 2345 Pressing the DISPLAY key will increment the digit The up arrow on the Display key indicates to increment digit Press 2 2 345 Pressing the RUN key will change digit and enable the next digit to be incremented The right arrow on the RUN key indicates to change digit Press BATCH SET Set Once the desired number is entered press the BATCH SET key to return t...

Страница 14: ...n 3 2 STOPPING The process can be stopped at any time by pressing the STOP switch Once the process has been interrupted in this way it can be continued by pressing the RUN switch or the process can be aborted and the instrument reset by pressing the STOP switch a second time When the process is interrupted the STOP LED will flash to prompt the operator to either restart or abort the batch RESETTIN...

Страница 15: ...is the total count for the current batch The Batch Total can be either the Gross Net or Mass depending on which value is programmed to control the batch The DISPLAY key can be used to display the following additional information Rate On the first press of the DISPLAY key the display shows RATE for one second followed by the net flowrate or MASS Flowrate Gross or Net Total Since the batch can be co...

Страница 16: ...ty Meter input the density and not temperature will be displayed The displays will read DNS for one second followed by the actual density value If the DISPLAY key is again pressed the display will revert to the Batch Total display In any display function if the DISPLAY key has not been pressed for 5 seconds the display will automatically go back to the Batch Total display LIMIT ON BATCH SIZE To pr...

Страница 17: ...f two ways 1 At the end of the batch the STOP key must be pressed to reset the Batch Total This must be done before another batch can be started Operation 15 Relay 1 Relay 2 End of Bat ch Start Time Prestop Quantity End of Batch R u n Stop Run P A U S E Bat ch Quantity R e ac h e d Reset Run Co un t Down Co u n t Up ...

Страница 18: ...ler can also be programmed during Calibration to either count up from zero on each batch or to count down from the preset batch quantity 16 Operation Relay 1 Relay 2 End of Bat ch Start Time Prestop Quantity End of Batch R u n Stop Run P A U S E Bat ch Quantity Reached Co un t Down Co u n t Up R u n Auto Restart T i m e ...

Страница 19: ...atch can also be programmed to provide a slowdown of flow at the end of the batch thereby enabling precise quantities to be batched The process can be stopped at any time by pressing the STOP key whereby both relays will immediately de energise The process can then be aborted and the batcher reset by pressing the STOP key again or the process continued by pressing the RUN key If the process is con...

Страница 20: ... amount of overrun It is recommended that Signal Timeout periods are kept fairly short but long enough such that the period is significantly longer than the time period between successive input pulses from the flowmeter at the minimum flowrate The instrument enables the user to program a time interval of up to 99 seconds to detect an absence of signal input If the Signal Timeout is set to 0 this f...

Страница 21: ...sequently it is strongly recommended that the Signal Timeout period be kept fairly short Although the above diagram shows a pulse input from the flowmeter an analog flow input has the same effect and the flow is defined as being stopped when the flow signal is at 4mA or below the cutoff value End of Batch Signal An End of Batch signal from an open collector transistor is output on terminal 30 and ...

Страница 22: ...After reaching the End of Batch see section 3 2 3 the Batch Controller will then wait for a pre programmed period before automatically resetting and starting the batch process once again The STOP button can be pressed at any time to interrupt the batching process and continued using the RUN key If however the process is to be aborted the STOP key is again pressed The Batch Controller is reset and ...

Страница 23: ...ic such as may occur with changing back pressures or sticking valves In calculating the amount of overrun to be compensated for the Batch Controller uses the average overrun on the last three batches The overrun is defined as the difference between the batch quantity set by the user and the batch total once the flow has stopped With Automatic Overrun Compensation the Signal Timeout must be set to ...

Страница 24: ... input during delivery The instrument will alarm if the pulse difference since reset exceeds 1 in 1000 pulses When an alarm condition exists the totals will cease counting and will freeze at the last total prior to the alarm On detection of the alarm condition the alarm output on terminal 7 will go low energise the output relays will de energise and the stop LED will flash indicating that the batc...

Страница 25: ... The flowrate R as expressed in the above equation is the volumetric flowrate at flow conditions With temperature compensation the flowrate R is corrected to give the flowrate at a base temperature or the mass flow Temperature Correction is covered in detail in Section 4 The user programs the Scaling Factor and selects the timebase during the Calibration procedure as detailed in Section 6 of this ...

Страница 26: ...etailed in Section 6 of this manual Note that the Model 414L will only handle flow signals from differential pressure type flow devices ie when n for 1 No temperature compensation 2 Density Correction for general liquids 3 A density meter input A cutoff can also be programmed for analog inputs which prevents the display of flowrate and integration of the input signal at low flowrates The cutoff is...

Страница 27: ...ns 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 As a guideline to the degree of filtering to be used the following table shows the response to a step change in input The value A is the filter constant which is programmed during the Calibration routine The times for the display v...

Страница 28: ...2 4 2 4 6 3 6 10 5 11 15 8 17 20 11 22 25 14 28 35 20 40 45 25 51 60 34 69 75 43 86 90 52 103 99 57 113 Table 1 Response to a step Input in seconds Note that if A is set to 1 there is no filtering of the input signal 26 Operation ...

Страница 29: ...00 For Example If the Rate is required in gallons per minute 1 The Scaling Factor would be programmed as pulses per gallon 2 The timebase would be programmed as minutes If the Totals are required in barrels 3 The Total Conversion factor is programmed as 42 there are 42 gallons in a barrel All totals including the Batch Quantity and Batch Total will now be in barrels Some common units are given bel...

Страница 30: ...ertificate will list a number of flowrates or frequencies with the measured K factor eg pulses per gallon or litre at each flowrate The following diagram graphs the change in scaling factor with frequency for a hypothetical flowmeter The heavy black line represents the actual scaling factor of the flowmeter while the light black line is the approximation used in the instrument Linear Interpolation...

Страница 31: ...espond to those shown on the Certificate If any frequency is set to 0Hz Frequency 6 in the preceding example then the program will require no further correction points to be programmed Hence the user can program any number of correction points up to a maximum of 10 Note that if all 10 correction points are required then Frequency 10 will automatically be assigned the value of 0Hz Operation 29 ...

Страница 32: ...s output the pulse output cannot be used to drive rate indicators The FLOW ALARM uses an identical circuit to the Output Pulse and is on terminal 7 The Flow Alarm is used by the Quadrature Input if selected and will output an error signal if there is a difference between the input pulses as described in Section 3 3 The Flow Alarm will also output an alarm condition if the flow times out during a b...

Страница 33: ... Impulse Counter Driving a Logic Input such as a PLC or Electronic Counter Operation 31 5 6 ohms 33V Zener 12 DC Supply Relay or Impulse Counter Model 414L 11 DC Supply Out 8 24V 5 6 ohms 33V Zener 2 External Load Resistor 10K Logic Input Model 414L 7 10 7 10 7 Flow Alarm 10 Pulse Output ...

Страница 34: ...ion to a base volume over relatively small changes in temperature 3 Correction for Petroleum Liquids to US and International standards for a wide range of petroleums to a base temperature of 60 F 15 C 4 Correction for LPG to US and International standards to a base temperature of 60 F 15 C 4 1 TEMPERATURE INPUT RTD OR 4 20mA The Model 414L is available with either a PT100 Platinum RTD input or wit...

Страница 35: ... a temperature adjust facility enables the temperature reading to be adjusted This allows for manufacturing tolerances on the RTD to be corrected 4 20mA A two wire 4 20mA input from a temperature transmitter or density meter can be input to instruments with the Model number designation 414LA With a 4 20mA input a linear relationship is assumed over the span of the transmitter The temperatures or d...

Страница 36: ...e Tf is the flow temperature C or F Tb is the base temperature C or F a is the Thermal Coefficient of Expansion per C or F The Volumetric Flowrate is the flowrate defined in section 3 4 1 The Thermal Coefficient of Expansion a for a liquid can be determined empirically or can be found in chemical engineering texts A list of coefficients is given on the following page for a number of petroleum prod...

Страница 37: ...810 0 00087 Heating Oil 0 820 0 00087 Automotive Distillate 0 840 0 00084 Industrial Diesel Fuel 0 855 0 00082 Fuel Oil High Sulphur 0 980 0 00070 Low Sulphur 0 900 0 00075 Bitumen 1 020 0 00063 Crude Oil Bass Strait 0 796 0 00087 Benzene 0 880 0 00120 Toluene 0 870 0 00110 Xylene 0 860 0 00100 White Spirit 0 780 0 00095 Mineral Turpentine 0 820 0 00087 Lube Oils SAE10 0 880 0 00077 20 0 890 0 000...

Страница 38: ...a constant density value to be programmed by selecting only one correction point In this case the temperature input is ignored This feature is useful if the temperature sensor is removed for maintenance The flow equation for volumetric flowmeters is Mass Flow R x Density where R is the flowrate defined in sections 3 4 1 and 3 4 2 Density is the density determined from the temperature density table...

Страница 39: ... the Mass flowrate is defined as Mass Flow S x A x Density where S Mass Flowrate at 20mA Density at reference conditions The Mass flowrate at 20mA and the corresponding reference density are provided by the flowmeter supplier and S is then calculated from the above equation and rogrammed during Calibration For differential pressure devices the Gross Total is calculated as Temperature Compensation ...

Страница 40: ...bricating Oils to 60 F against Relative Density 60 60 F Table 54A Correction of Volume for Generalized Crude Oils to 15 C against Density at 15 C Table 54B Correction of Volume for Generalized Products to 15 C against Density at 15 C Table 54D Correction of Volume for Generalized Lubricating Oils to 15 C against Density at 15 C Based on the programmed density and the measured temperature the softw...

Страница 41: ...uct Group Relative Density Density kg m3 Crude Oil 0 751 1 000 750 1000 Jet Fuels Kerosene Solvent 0 751 0 850 750 850 Gasoline 0 641 0 800 640 800 Lube Oil 0 851 0 960 850 960 Diesel Heating Fuel Oils 0 801 1 100 800 1100 When programming the density the values must be entered within these specified limits otherwise an error message will be displayed prompting the operator to check the parameters...

Страница 42: ...leum gases Metric units API Table 54 for Reduction of Volume to 15 C against density at 15 C for liquefied petroleum gases For US units the density is programmed as the Relative Density SG and the volume is referenced to 60 F For Metric units the density is entered as kg litre and the volume is referenced to 15 C When programming the density the values must be within the following limits otherwise...

Страница 43: ... defined in Sections 3 3 1 and 3 3 2 Density is the density input If the input falls below 3 5mA an error status Err 12 is displayed Differential Pressure Devices For differential pressure devices the Mass flowrate is defined as Mass Flow S x A x Density where S Mass Flowrate at 20mA Density at reference conditions The Mass flowrate at 20mA and the corresponding reference density are provided by t...

Страница 44: ...erfaces are available on the rear terminal strips and the user can select either one by making the appropriate connections The RS232 interface is primarily used with printers or for simple communication with a computer over a short distance The RS422 and RS485 interfaces are used for communication over a long distance or in applications requiring multipoint communication 42 Options 24 23 26 25 21 ...

Страница 45: ...e connections will convert the RS422 4 wire interface to the RS485 2 wire interface as shown in figure 2 Each instrument can be programmed with a unique address which is used by the Master Controller ie IBM PC to identify each instrument The Controller will send the address down the line and will alert the relevant instrument Subsequent software protocol will control the flow of data between the C...

Страница 46: ...Options H o s t Computer Twisted Pair L o a d 120 ohms 400 Series Instrument 400 Series Instrument In Out G n d G n d In Out G n d NB Diagram refers to Version 3 Models Only Version 3 models can be defined by having plug off green terminals ...

Страница 47: ...and apply power to the instrument The baudrate parity and word length can be programmed during calibration and the user must ensure that these correspond to the setting on the printer or computer with which the 414 is communicating The software protocols can be selected during Calibration to provide standard interfaces to a number of printers and computers Since other interfaces will continue to b...

Страница 48: ...ocol is also supported and the instrument will automatically determine if the message sent by the host computer is preceded by an Xoff character If it does recognise an Xoff as the first character of a command string the instrument will automatically switch to Xoff Xon protocol and begin end all messages with Xoff and Xon characters respectively Xoff Xon protocol is only available when the RS232 i...

Страница 49: ...he link across terminals 1 and 2 The key switch actions during Calibration are as follows RUN will change a flashing digit to the next digit DISPLAY will increment a flashing digit or change a parameter selection BATCH SET will reset a flashing digit to zero STOP will step through the program sequences Note that the arrows in the RUN and DISPLAY key switches indicate that these switches can be use...

Страница 50: ...on 6 3 Test Check Input Signals see section 6 4 End Exit to Normal Operation The user can toggle between these modes using the DISPLAY switch and by using the STOP switch select the appropriate mode To exit Calibration step through the Setup program Batch program or Test program until the end and press the STOP switch when End is displayed ensure the calibration link is not connected 48 Calibratio...

Страница 51: ...otals to zero To reset all totals net gross and accumulated press the BATCH SET key once 3 FL INP Select either a single frequency input or a quadrature input ie two pulses from a single flowmeter The analog input on the Model 414LA can also be selected 3 3 single quad analog Single Input Quadrature Input Analog Input only for Model 414LA 4 CORRCT Linear Nonlin Sq rt Select either a linear input o...

Страница 52: ...range of 0 to 9999Hz 3 6 Fact 1 This is the K factor of the flowmeter ie pulses per gal etc at Freq1 The digits before the decimal point whole numbers are programmed first followed by the decimals The scaling factor can be programmed in the range of 0 1000 to 50 000 Freq2 Freq2 is programmed to the second frequency point If any Freq is set to 0 no further correction points can be programmed and th...

Страница 53: ... Timebase with which the Rate is calculated must be entered as units min units hour units day units second 9 FILTER The filter constant for filtering the rate display 3 4 3 1 No filtering to 99 Very heavy filtering 10 TOTCON A division factor to convert the totals to different units from those used for rate ie gallons min and barrels 3 5 1 Rate and totals have the same engineering units x xxxx Oth...

Страница 54: ...sation is selected the program will go to Step 20 ACCESS If a Density Meter Input is selected the following steps are displayed 14 d4 The density at 4mA input is programmed 4 6 15 d20 The density at 20mA input is programmed The program will now go to Step 20 All other selections result in the following steps being displayed 14 t Select either US units or metric units as the basis of the temperatur...

Страница 55: ...lly described Volume Correction for General Liquids 17 REF F C Program the base temperature for the compensation Enter the temperature in F or C depending on the units selected in Step 15 4 2 18 COEF A Enter the thermal coefficient of change a as a Hence if the coefficient of expansion is 0 0029 C enter the change as 0 29000 The program will now go to Step 20 Density Correction for General Liquids...

Страница 56: ...les 24B 54B Gasolines and naphthenes tables 24B 54B 4 4 18 dn 60 F or dn 15 C If US units are selected this is the Relative Density SG If Metric units are selected the Density at 15 C in kg m3 is programmed The program will now go to Step 20 Liquid Petroleum Gas 17 dn 60 F If US units are selected the Relative Density 4 5 20 ACCESS Front No Acc Enable access to calibration routine via the front ke...

Страница 57: ...selected 2 TOTAL Net Gross Batch on Gross total or on Net Total or Mass Net or Mass Gross 3 2 3 BATCH L xxxxxx Maximum Batch Size which can be entered Set to 0 if no limit on batch size 3 2 4 AUTO S Off On xx xx Automatic restart feature Disable Enable If enabled automatically restarts the batch xx xx mins sec after the end of the last batch 3 2 4 5 START T xx xx Slow start time Time in minutes se...

Страница 58: ... batch quantity Count up from zero 3 2 8 T OUT The Signal Timeout in seconds Setting to 00 disables this feature 3 2 2 9 AOC En Dis Automatic Overrun Compensation Note that the Signal Timeout must be greater than 0 ie enabled for this feature to work Enable Disable 3 2 5 10 AUTO R Off On Auto Reset not displayed if Auto Restart is programmed Step 3 above Batch Total must be manually reset before s...

Страница 59: ...2 If the RS232 422 485 option is installed the following will be displayed 2 DF Eur USA Date Format European ie days months years USA ie months days years 5 3 Date xx xx xx Enter date as Years Months Days 5 4 HOUR xx xx Enter time as a 24 hour clock Hours Minutes 5 BAUD xxx Baudrate 300 600 1200 2400 4800 and 9600 6 DATA 7 8 Word length 7 bits 8 bits 7 PARITY NP OP EP Parity No Parity Odd Parity E...

Страница 60: ... Model 624 Printer EPSON TM290 2 Slip Printer Contrec Model 632 2 Printer Syntest SP 210 Printer Computer If a Printer Protocol is selected the following message is displayed 10 UNIT xx 00 01 02 03 04 05 Units of measurement printed None Litres Ltrs Gallons Gals Barrels bbls Pounds lbs Grams gms Kilograms kgs Tons ton If a Computer Protocol is selected the following message is displayed 10 ECHO On...

Страница 61: ... is selected the display will show T4 20 or D4 20 Displayed for 1 second to indicate input from the 4 20mA temperature input The input current is then displayed If the instrument is a Model 414LR and temperature correction is selected the display will show RTD xxx xx Displayed for 1 second to indicate the RTD The measured temperature is then displayed 4 Use the DISPLAY switch to step to the Flow I...

Страница 62: ...llowed by the actual frequency Frequency in Hz If the flow is reversing a negative sign will appear If the Flow Input is an analog signal the display will show F4 20 xx xx Displayed for 1 second followed by the actual current mA If the RS232 422 485 option is installed the display will then show 5 CLOC xx xx xx Clock Time in Hours Mins Sec 60 Calibration ...

Страница 63: ...is selected and becomes the 0 input while Channel 1 becomes the 90 input Channel 2 can interface directly to an Open Collector a Reed Switch a Logic Signal a Namur Sensor The frequency input circuits for the Model 414L can be configured by the user to interface with most flowmeters A small 8 pole DIL switch on the rear of the instrument is used to set up the input circuit to operate with different...

Страница 64: ...K on channel 1 10K on channel 2 Input types b d 10K Input type c 1K Input type e 100K 62 Input Circuits Input Signal Type Input Terminals Switch Settings 1 2 3 4 5 6 7 8 A Logic Signal CMOS Pulse 9 8 3 8 off off off off on off off off B Open Collector or Reed Switch 9 8 3 8 off off off off on off on off C Namur Proximity set DC out to 8 volts 11 9 11 3 on off on on on on off off Channel 1 Only D S...

Страница 65: ...rument allows the voltage to be adjusted in the range of 8 24 Volts and the output can supply a maximum of 50mA Note that when using this DC output to power opto sensors some flowmeter manufacturers require that a current limiting resistor be used Please refer to the flowmeter manufacturers data sheet if this is the case Input Circuits 63 ...

Страница 66: ...put Channel 1 9 Common for Channels 1 2 Pulse Input Channel 2 8 3 5 V 1 0 K S 7 1 K S 3 S 8 100 R 01 1 0 0 K 1uF S 5 S 2 I N P U T C O M P A R A T O R 5 V 3 3 K S 4 3 3 K 1 K 2 5 V 1 0 K 1 K S 1 100 R 1 0 0 K 01 I N P U T C O M P A R A T O R 5 V 3 3 K 3 3 K 1 K 2 S 6 ...

Страница 67: ...h Input Circuits 65 1 on 8 3 Ch 1 Common Ch 2 eg vortex pre amplifiers or magnetic flowmeters 8 9 on 1 8 9 8 3 Ch 2 Common Ch 1 eg preamplifiers and opto sensors 1 8 on 8 3 Reed Switches e g p o s i t i v e d i s p l a c e m e n t flowmeters with reed switch outputs 9 ...

Страница 68: ...ement flowmeters with 2 wire proximity switch outputs 1 8 on 11 Resistor Ch 1 Common and opto sensors Note that the current limiting resistor may be required See the flowmeter manufacturer s data eg pre amplifiers 8 9 on 1 9 8 Use shielded cable eg millivolt signal from a turbine flowmeter single input only 8 to case earth ...

Страница 69: ...t be used The flowmeter and temperature or density sensors are connected as follows Shielding When shielding the input signals the shield should be connected to the case earth and not connected at the transmitter end ie ground at the instrument end only Input Circuits 67 F T T T 4 20mA 4 20mA Temperature Transmitter Flow Transmitter 11 14 5 Set Supply Out to 24 Volts 250 ohms 250 ohms M od e l 4 1...

Страница 70: ...urements with the RTD up to 100 meters from the instrument It is recommended to use shielded cable when interfacing to RTD s Two or three wire RTD s can be used in place of 4 wire RTD s but 4 wires must e taken to the RTD and the signal and current wires joined as close to the RTD as possible With the direct RTD measurement the program automatically corrects for the non linearity in the RTD 68 Inp...

Страница 71: ...TD as the of the signal on terminal 5 The RTD has no polarity and can be connected in either direction 4 20mA With a 4 20mA input the program enables the 4mA point and the 20mA point to be programmed Unlike the direct RTD measurement no correction is made for the non linearity of the temperature or density sensor Input Circuits 69 ...

Страница 72: ...mote push buttons can be connected to the Model 414L to start and stop batches The switch functions are identical to the RUN and STOP switches on the front of the instrument The switches are wired as follows 70 Input Circuits 2 28 29 R U N S T O P ...

Страница 73: ... isolated from the case and from the internal circuitry A Supply Output voltage is provided to power sensors This output will provide a regulated voltage of 8 to 24 volts and the voltage is adjustable by means of the potentiometer on the rear panel Maximum current is 50mA and the instrument comes with the voltage factory set at 24 Volts When the instrument is powered from a DC power source the max...

Страница 74: ... called Snubbers are used for two reasons Ÿ To limit the amount of electrical noise caused by arcing across the contacts which may in extreme cases cause the microprocessor to act erratically Ÿ To protect the relay contacts against premature wear through pitting RC suppression networks consist of a capacitor and series resistor and are commonly available in the electrical industry The values of R ...

Страница 75: ... 1 10 Pulse Out Pulse Out 11 DC Power Out 8 24 VDC DC Power Out 8 24 VDC 12 DC Ground DC Ground 13 DC Power Input DC Power Input 14 PT100 I Flow Input 4 20mA Terminal RS232 422 485 Option 20 RS232 Signal Ground 21 RS232 Data In 22 RS232 Data Out 23 RS422 485 Data Out 24 RS422 485 Data Out 25 RS422 485 Data In 26 RS422 485 Data In 27 RS232 CTS Terminal Relay Output Switches 2B Signal Ground 28 Remo...

Страница 76: ...h 3 x M25 Gland holes Enclosure with 3 x NPT Gland holes 71 5 71 5 70 0 70 0 130 0 130 0 Mounting Holes 4 x M8 Mounting Holes 4 x 5 16 UNF Gland Holes 3 x M20 Gland Holes 3 x NPT Door Hinge Mounting Holes 4 on rear Metric thread M8 NPT thread 5 16 UNF Bottom View Material Cast Aluminium Finish Light beige powdercoat Earth Point 115 0 ...

Страница 77: ...ult on the flow input before restarting Batcher stops midway through a batch This could be due to the Signal Timeout having timed out Check for a fault in the system Ensure that the Signal Timeout period is significantly longer than the period between pulses from the flowmeter at the minimum flowrate No display Check power to the instrument All 88888888 displayed The Batcher will display all eight...

Страница 78: ...nput circuit incorrectly lack of shielding on the input Shield the input signal with the shield earthed at the Batch Controller only Instrument acting erratically Erratic operation can be the result of severe electrical interference Considerable attention has been given to designing the Batch Controller to withstand electrical interference However in extreme cases loads may be encountered which ar...

Страница 79: ...nd of batch pulse output or flow alarm This fault is usually caused by lack of a pull up resistor or load on the output The outputs themselves have no internal pullups and rely on an external load Trouble Shooting 77 ...

Страница 80: ...ed 12 The Temperature or Density Input is out of range 13 Flow error due to a Quadrature error see Section 3 3 or Signal Timeout see Section 3 2 2 14 Communications Input error RS232 422 485 Interface SIGNAL Analog flow input signal is below 3 5mA 414LA only See Section 3 4 2 Output Errors 21 Invalid output configuration 22 Communications error Baud rate not set 23 Communications error Printer fau...

Страница 81: ...sfer 22 Cutoff 24 Cutout 6 D Date 45 DC Input Voltage 71 DC Output 63 Decimal Points 51 Densitometer 41 Density 36 Density Correction 36 Density Meter 41 Diesel 39 Differential Pressure Devices 24 Dimensions 6 Display Key 13 Displayed Information 13 E Earth Lug 71 Earthing Point 71 End of Batch 19 Error Codes 78 Ex 410 Enclosure 74 F Filtering 25 Flow Alarm 18 30 Flowrate 23 Frequency Input 23 Fre...

Страница 82: ...e Push buttons 70 Resetting 12 Response 25 RS232 422 485 Interface 42 RTD Type 6 Run Key 11 S Scaling Range 6 Setting the Batch 11 Setup Parameters 47 Signal Timeout 18 Slow Start 17 Slow Stop 17 Solvent 39 Span 24 Specification 6 Square Root Input 49 Starting 12 Stop Key 17 Stopping 12 Switch Settings 62 Switching Current 7 Switching Power 7 Switching Threshold 62 T Temperature Compensation 32 Te...

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