MR-100/MR-200
Contents
1. 16 LCD display 6 12 manual mode 2 14 ON Stdby key 12 power jack 6 remote input 2 4 10 remote mode 2 17 18 RS 232 2 18 20 21 MR 100 200 Index INDEX setup mode 15 signal label 16 software revision number 14 specifications 4 standby 12 three way valve 1 4 7 threshold 2 15 top level menu 12 14 15 unpacking the MR 100 5 valve 1 4 7 wall mount adapter 4 5 6 ZERO key 12 zeroing detector input 4 10 11 12 222. chromatographic peaks into a waste container while allowing uncontaminated effluent to recycle back to the mobile phase reservoir The Brinkmann MR 100 Mobile Phase Recycler is designed to endure the laboratory environment and its low voltage design minimizes electrical hazards All valve wetted parts are constructed of chemically inert and biocompatible materials and the instrument s membrane keypad protects the unit from accidental solvent and chemical spills Installation is accomplished in minutes and solvent savings begin immediately BRINKMANN Clean Contaminated Moblle Phase 100 200 RECYCLER Mobile Phase i HPLC Detector Mobile Phase Reservoir FLUID PATH MR 100 200 Introduction The MR 100 has an analog input for connection to the system detector The recycler has three input ranges 1000mV 100mV and 10mV Normally the valve is off and clean solvent flows through the valve back to the mobile phase reservoir When the analog input exceeds a user programmable threshold the valve diverts the stream to a waste container The valve remains in the waste position for a user defined delay period up to 99 seconds to assure that tailing peaks and the volume of sample between the detector and the recycler valve are also sent to waste The MR 100 recognizes both positive and negative peaks and features a bi polar threshold so that all peaks are sent to waste Diagram 1 1 shows a typical chromatogram
3. way 12V solenoid type All wetted parts Teflon or PPS 1 4 28 flat bottom fluid connections Vacuum to 30psia pressure rating 20 millisecond switching speed 250 ml min max flow rate User selectable ranges 1000mV 100mV and 10mV Input impedance 100Kohm Single key operation and or remote input 12 bits 75Hz sample rate Valve position via contact closure Auto zero via contact closure 3 3 x 7 0 x 9 25 HxWxD 4 lb MR 100 200 Unpacking 2 0 Unpacking the Instrument Carefully remove the Brinkmann Mobile Phase Recycler and its accessories from the shipping carton Save the packing materials for future shipment and or storage Check to see that the package contains all of the following items Contents 1 MR 100 or MR 200 Mobile Phase Recycler 1 12 VDC Wall Mount Adapter rated for the voltage used in your area If you receive an adapter not rated for the voltage in your area please contact Brinkmann immediately at 800 727 6768 120V 60 Hz applications use PN 022859871 220V 50 Hz applications use PN 022859935 Tubing 0 020 ID x 0 064 OD length 4 feet PN 022859145 Tubing 0 032 ID x 0 064 OD length 5 feet PN 022859951 Flangeless ferrules 022859986 for 0 064 OD tubing Ferrule nuts 022859978 for 0 064 OD tubing Recycler hook up wire three cable length 4 feet PN 022859927 Hook up jumper PN 022859293 MR 100 MR 200 User manual PN 022859994 8B AN The following item is supplie
4. DECREASE SELECT L a DOWN UP Tas Selection EXIT INPUT VOLTAGE SELECT HA INPUT VOLTAGE 0000 mv ES 100m uP DOWN SELECT er uP DOWN SELECT L SELECT 100bmv z po E N a ts Selection EXT SIGNAL LABEL LE SIGNAL LABEL my uP DOWN SELECT sence UP DOWN SELECT ae els ce 13 MR 100 200 Operation 4 2 Menu System and Function Keys When you first turn the recycler on the display briefly shows the sign on screen along with the current software revision number BRINKMANN RECYCLER VERSION 1 00 After a few seconds the top level menu is displayed This menu is used to start one of the four functional modes of the instrument Manual Remote Auto and Setup The three function keys labeled A and below the display are defined by the contents of the second line of the display You will notice that as you use the menu system the function keys change purpose to meet the needs of the current menu The first display of the top level menu looks like this MANUAL MODE UP DOWN SELECT By pressing the function keys marked UP and DOWN you can scroll through the four modes on the top line of the display Press SELECT to enter the mode of your choice 4 3 Manual Mode Manual Mode is the simplest of the three operational modes in the recycler Once selected manual mode changes the display to the followin
5. MR 100 MR 200 HPLC Mobile Phase Recycler User Manual Metrohm USA Inc MR 100 MR 200 Mobile Phase Recycler Version 0 3 BRINKMANN MR 100 200 RECYCLER Contaminated Mobile Phase gt Clean Mobile Phase lt Inject Valve Mobile Phase Reservoir FLUID PATH Metrohm USA me Warranty Statement METROHM USA PRODUCT WARRANTY Metrohm USA Inc warrants this product to be free of manufacturing defects and free of material defects for a period of one year from the date of delivery of the product when used in accordance with the instructions for the product The liability of Metrohm USA Inc is limited to the replacement or repair of this product at Metrohm USA s sole discretion and determination METROHM USA INC MAKES NO OTHER WARRANTY EXPRESSED OR IMPLIED THERE IS ABSOLUTELY NO IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WARRANTY COVERAGE APPLIES TO REPAIR OR REPLACEMENT OF THIS PRODUCT ONLY AND SPECIFICALLY EXCLUDES ANY DIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES Excluded from any product warranty claim is any and all product damage resulting from carelessness or misuse of this product including but not limited to operating the product in the presence of corrosive materials or an environment which can damage the components Also excluded from product warranty are all consumables disposables All service and warranty returns require a r
6. aking connections to the analog input of the MR 100 In order of complexity these are Single Ended Differential and 4 20mA A hook up wire PN 022859927 capable of either single ended or differential connection is included with the unit as is the jumper 22859293 required for single ended connections A hook up cable for 4 20 mAmp connections is available from Metrohm USA Please contact Metrohm USA customer service at 800 727 6768 for pricing and availability 3 2 1 Single Ended analog outputs use ground as the low side of the signal If you are using a two wire connection to your detector it is likely to be a single ended configuration DETECTOR SIGNAL __ DETECTOR GROND o Jumper Single Ended Analog Connection It is important that you tie the GND and Signal together in single ended applications to ensure the MR 100 has a proper ground reference A jumper wire PN 022859293 is included with the system and should be used as shown in the figure above to tie the GND and Signal together MR 100 200 Installation 3 2 2 Differential analog outputs are used for better noise performance over single ended systems A differential configuration uses three wires and the ground jumper is not required Connect the third wire of the hook up cable between the detector ground and the recycler ground Then route the signal outputs of the detector to the and inputs of the MR 100 This isol
7. al zero point for the detector and recycler Once set the recycler will automatically return to zero when the detector is zeroed 3 3 Remote Control Connection There are two inputs dedicated to remote control of the MR 100 recycler The ZERO input can be used at any time to auto zero to the analog input signal via an external signal With the recycler in the REMOTE mode as described in section 4 6 you can use the REMOTE input to control the valve position Both signals can be driven by either contact closures or TTL level input signals For contact closures applications connect the contact closure wire to the appropriate input terminal on the back panel of the recycler The remote input terminals are clearly marked Remote Switch Closure and Zero Switch Closure Hook up wires PN 910013050 for contact closure are available from Metrohm USA Please contact Metrohm USA customer service for pricing and availability REMOTE ZERO SIGNAL SWITCH SWITCH GND INPUT CLOSURE CLOSURE po DOO O G Y G 10 MR 100 200 Installation You can also use TTL inputs but the signals must be referenced to ground The proper connection is shown below REMOTE ZERO SIGNAL SWITCH SWITCH GND INPUT CLOSURE CLOSURE b L 1 GNO TILIN GNO REMOTE ZERO 11 MR 100 200 Operation 4 0 Front Panel Controls and Operation The MR 100 recycler front panel is designed to be conv
8. and the valve s position throughout the run The MR 100 has three modes of operation Auto Mode allows you to automatically recycle mobile phase by switching valve position based on the output of your detector as described above Manual Mode is meant for system setup and manual control of the valve position It lets you toggle the valve position through the keypad Remote Mode lets you control the valve through an external contact closure At any time you can easily zero the detector output through a dedicated key on the front panel of the MR 100 or via contact closure switch on the back panel System setup is easy to handle with the system LCD display and three function keys The MR 100 walks you through every step with easy to understand menus The Brinkmann MR 200 recycler gives you all the functionality of the MR 100 plus the added benefit of remote control through an external RS 232 port See section 5 0 for more information regarding serial control of the recycler MR 100 200 Introduction Valve Position EES Diagram 1 1 Typical Peak Response MR 100 200 Introduction 1 1 Specifications Power Display Valve Analog Input Auto zero A D conversion Remote Inputs Dimensions Weight 12VDC 500mA maximum provided by wall mount adapter 120V 60 Hz AC applications use PN 022859871 220VAC 50 Hz applications use PN 022859935 2 line 20 character LCD Three
9. ates ground related noise from the signal source The MR 100 will allow up to a 10V difference between the GND and signal levels when wired this way DETECTOR GROUND _____ _____ Wy i 7 mm y DETECIOR ___________ ne AD DETECTOR ___________ BONA 114 a Y D 3 2 2 4 20mA analog outputs can also be used with the MR 100 Since the MR 100 analog input is voltage driven you must first convert the detector output current to a suitable voltage range You can do this by wiring the input as shown below DETECTOR ___ NA D DEECIOR SONALE SOMME l d Le gt HE _ IGA ie 44 i j Hes 4 4 20mA Current Loop Connection The 62 5 ohm resistor is used to convert the 4 20mA detector output into 1000mV full scale voltage signal The offset of the signal will be 4mA 62 5 ohms 250mV You can easily reconcile the zero level by using the auto zero function described in section 4 0 For 0 20mA current loops substitute a 50 ohm resistor in place of the 62 5 ohm value MR 100 200 Installation Once you have made the electrical connection between the detector and recycler equilibrate the LC system and zero the LC detector After you have adjusted your detector zero perform an auto zero at the recycler as described in section 4 0 This process establishes a common electric
10. d only with the MR 200 Mobile Phase Recycler 1 RS 232 Serial Connector Cable PN 022860038 not included with MR 100 If any of the items are missing or appear to have suffered shipping damage please do not attempt to use the recycler Contact the Metrohm USA customer service department at 800 727 6768 for assistance All items returned for repair replacement must be accompanied by a return authorization number If you must return any item s to Metrohm USA please contact customer service to receive the proper return authorization MR 100 200 Installation 3 0 Installation and Rear Panel Connection Guide After unpacking the MR 100 take a few minutes to check the instrument before turning it on Check the AC voltage rating of the wall mount adapter that accompanies the instrument on the adapter label Make sure the AC voltage rating is correct for your area If the rating is not correct do not attempt to use the MR 100 For assistance contact the Metrohm USA service department at 800 727 6768 RAL NO MADE IN U S A DETECTOR RECYCLE WASTE RENOE SGMA SWITCH SMICH CLOSURE CLOSURE ma rm HE Plug the wall mount adapter into the power jack marked POWER 12VDC Once you have plugged the MR 100 wall mount adapter into a suitable AC power source turn the instrument on by pressing the ON STBY key on the front panel The contras
11. enient and easy to use The operation of the instrument centers around a 2 line 20 character LCD display Three dedicated keys to the right of the display can be used at any time a D JE 29 00 RECYCLER ON Stdby lets you turn the system and off When not use the MR 100 is in standby mode Since the power requirements of the recycler are low the internal circuitry remains powered whenever the wall mount adapter is plugged in When in standby the recycler valve is de energized in waste position and the display is blanked ZERO is used to initiate an auto zero You must press it twice to perform the zeroing function The double key press is to prevent inadvertent auto zeroing of the input signal The auto zero function will automatically trim out any offset on the input signal Once zeroed the display will show the current input signal as OmV and all subsequent measurements will be made relative to the new zero point The zero input on the back panel can also be used to perform this same function through an external contact closure EXIT lets you abort the current operational mode or menu item The EXIT key allows you to escape the portion of the software you are currently in and will take you to the next highest level of the software The EXIT button will eventually lead you all the way back to the top level menu 12 MR 100 200 Ope
12. eturn authorization number RMA Please contact Metrohm USA customer service at 800 727 6768 for assistance or to obtain an RMA Return units must be sent with proper return authorization number to Metrohm USA Inc 6555 Pelican Creek Circle Riverview FL 33578 RMA MR 100 200 Mobile Phase Recycler TABLE OF CONTENTS 1 0 Description 1 1 Specifications 2 0Unipackingithe inistrimen Eis ER Ge 5 3 0 Installation and Rear Panel Connection Guide iii 6 3 1 Fluid Connections 3 2 Analog Input Connection 3 21 Single Ended Ee GE Be inner KO Ge ee ee nn in Arguments 8 3 2 2 Differential 3 23 4 20 COMMECEL ON EE Ss ace ca Ee EE 9 3 3 Remote Control COM MECtIONS ic EA rennes anses sath EE 10 4 0 Front Panel Controls Operation sise 4 1 Control Software Flowchart 4 2 Menu System Function Keys 4 3 Manual Mode A ASetipMOd GE 4 5 Auto Mode 4 6 Remote Mode 5 0 MR 200 Serial Mode MR 100 200 Introduction 1 0 Description The Brinkmann MR 100 mobile phase recycler is a microprocessor controlled three way valve designed to automatically separate uncontaminated mobile phase from contaminated solvent in an LC system This is done by diverting mobile phase that carries
13. g DS 000mV VP RECYCL WASTE RECYCLE EXIT The top line of the display shows the current input voltage and valve position The input range and display units can be changed through the Setup Mode The manual mode always uses the input range and display units of the most recently selected setup see section 4 4 You can use the function keys A for waste and B for recycle to manually change valve position To leave manual mode press EXIT The valve position always returns to the WASTE position when you exit a mode and re enter the menu system 14 MR 100 200 Operation 4 4 Setup Mode The Setup Mode is used to program and change the parameters of each of the ten Auto Modes To program one of the Auto Modes enter the Setup Mode and Select one of the modes 1 to 10 The parameters you enter in this Setup Mode will become the parameters of the Auto Mode with the corresponding number e g Setup Mode 2 will set parameters for Auto Mode 2 The MR 100 has storage for ten individual setups Upon entering the Setup Mode the display will show the following SETUP MODE 1 UP DOWN SELECT Use the function keys to select one of the ten storage locations Once you have selected one of the ten locations the recycler will present a menu of settings THRESHOLD DELAY TIME INPUT VOLTAGE and SIGNAL LABEL THRESHOLD UP DOWN SELECT You can scroll through these settings using the up A and down B keys in the same manner as scr
14. nd recycler Leave a small amount of excess tubing so that the system s components can be moved or rearranged without disconnecting the tube Attach a ferrule PN 022859986 and nut PN 022859978 to both ends of the tube Connect one end of this tube to your HPLC detector s output line and the other to the recycler valve port labeled DETECTOR In summary the three ports of the recycler valve are plumbed in the following manner Detector Connect the output line of the system detector here Use the 0 020 ID tubing PN 022859145 Waste Route this line to a suitable waste container Use the 0 032 ID tubing PN 022859951 Recycle Route this line back to the mobile phase reservoir or a reservoir for collecting recycled mobile phase Use the 0 032 ID tubing PN 022859951 MR 100 200 Installation 3 2 Analog Input Connection Note The MR 100 uses an isolated wall mount adapter to supply power to the system This means there is no direct connection to earth ground other than the connections to the terminal block on the MR 100 rear panel It is important that you make a suitable ground connection to the position marked GND in order for proper operation of the instrument The analog input of the MR 100 can accommodate three input ranges 1000mV 100mV and 10mV You set the input range through the front panel controls This is described in section 4 0 Operation and Front Panel Controls There are three methods for m
15. olling through the modes in the top level menu To adjust a setting you must first select it from the menu Remember that at any time you can use the dedicated EXIT key to return to the top level menu for selecting modes THRESHOLD can be set from 0 1 to 99 9 The threshold is set as a percentage of the full scale range For example if your input range is 10mV and you set the threshold to 0 5 the valve will go to the waste position when the detector output exceeds 50 microvolts The display for setting the threshold looks like this THRESHOLD TH 00 5 INC DEC SELECT The proper threshold setting must be determined for each application 15 MR 100 200 Operation DELAY TIME has a range of 0 to 99 seconds You use this setting to divert tailing peaks to waste Delay time is also used to compensate for the time it takes the sample to traverse the plumbing volume between the detector and recycler The default setting is 30 seconds and should be adequate for most applications Several factors must be considered when selecting a delay time Most important are the presence of tailing peaks in your chromatogram the dead volume of the tubing between the detector and recycler and the flow rate being used The following equation can be used to calculate the time required to clear the dead volume between the detector and recycler assuming 0 020 ID tubing is used Delay seconds 0 12 x tube length cm flow rate ml min The displa
16. ration 4 1 Control Software Flow Chart The flow chart below outlines the various display prompts and their relationship to each other Please refer back to this diagram as you read through section 4 and set up your recycler DISPLAY FUNCTION 2 UNES 20 CHARACTERS EACH UQUID CRYSTAL DISPLAY POWER UP SCREEN 10sec display RECYCLER VERSION MANUAL MODE SELECT DS 000 0 VP WASTE DOWN SELECT ne WASTE RECYCLE EXIT UP DOWN EXIT REMOTE MODE SSELECTE DS 000 0 VP WASTE UP DOWN SELECT ar REMOTE uw ore gt EXIT AUTO MODE cire AUTOMODE 1 uP DOWN SELECT GT UP DOWN SELECT DOWN ne AUTOMODE 10 UP DOWN SELECT EXIT SELECT DS 000 0 VP RECYCLE TH 00 DT 00 SEC pes ur DOWN EXIT SETUP MODE SEULE SETUP MODE 1 uP DOWN SELECT uP DOWN SELECT UP DOWN 1 SETUP MODE 10 EXT UP DOWN SELECT SELECT Pour THRESHOLD LEVEL UP DOWN SELECT Selection text THRESHOLD LEVEL screen THRESHOLD TH 00 0 TH O 99 9 uP DOWN SELECT INCREASE DECREASE SELECT DOWN Selection Leur DELAY TIME SEE DELAY TIME DT 00 SEC DT 0 99 SEC UP DOWN SELECT EET INCREASE
17. t closure x 3 for valve to follow threshold delay time settings N Valve to recycle position only used after W1 command Valve to waste position only used after W1 command Returns the equipment type and version number Response Vxy equipment number always 2 for MR 200 y version number x xx 18 MR 100 200 MR 200 Serial Mode Rxx Uxx ZO Hxxx Cx DO Pxy 50 Sets the Range 00 for 10mV 01 for 100mV 02 for 1000mV Sets the displayed system units xx 00 for mV xx 01 for Au xx 02 for FS Auto zeroes the input signal level Sets the threshold value in FS only active after W3 command xxx 001 through 999 for 00 1 to 99 9 threshold Sets the delay time only active after W3 command xx 00 to 99 seconds Enable Disable chart recorder data 1 enable 0 disable When chart recorder data is enabled the MR 200 will send a command every second Prompts the MR 200 to return a single data value via the serial port The data point command P is sent from the MR 200 x status see S command y three digit data plus sign without decimal point Example 005 is 005Au when Au is the selected unit Requests a Return Status indicator which is sent to the host computer The MR 200 will send a SO or S4 Lower bits are reserved for future use in peak detection SO valve to recycle S4 valve to waste Returned when in
18. t level of the LCD display can be adjusted with a small screwdriver inserted into the hole marked DISPLAY ADJUST Be careful not to use excessive force when making display adjustments The total adjustment range is 3 4 turn The connector marked RS 232 option is used only on the Brinkmann MR 200 recycler see section 5 0 for serial command procedure MR 100 200 Installation 3 1 Fluid Connections After unpacking The three way valve is mounted on the rear panel All fluid connections use standard 1 4 28 flat bottomed fittings Four nuts PN 022859978 and four ferrules PN 022859986 for 1 16 OD tubing connections are provided with the instrument as is required tubing Warning Do not use excessive force when making fluid connections as this may strip the threads in the valve body Attach a ferrule and nut to one end of both of the five foot lengths of 0 032 ID tubing PN 022859951 and connect these tubes to the valve ports labeled WASTE and RECYCLE Cut these tubes to the shortest practical length so that the open end of each can be inserted into their respective reservoirs The larger ID tubing 0 032 is used on the valve outlets to prevent a pressure buildup across the valve Cut the 0 020 ID tubing PN 022859145 to the length required to cover the distance between your system s detector and the recycler valve The length of this tube should be minimized to reduce the dead volume between the detector a
19. to the mobile phase reservoir When the analog input exceeds a user programmable threshold the valve diverts the stream to a waste container The valve remains in the waste position for a user defined delay period up to 99 seconds to assure that tailing peaks and the volume of sample between the detector and the recycler valve are also sent to waste Diagram 1 1 on page 3 shows a typical peak response When you want to change input range display units signal threshold or delay time you use the Setup Mode see section 4 4 The MR 100 has storage for ten individual setups When auto mode is activated you first choose one of the ten setups The display will show the following AUTO MODE 1 UP DOWN SELECT Once started the auto mode displays DS 000 VP RECYCL TH 1 0 DT 30 SEC The top line of the display shows the current input voltage and valve position The bottom line shows the current threshold and delay time settings At any time during the auto mode operation you can perform an auto zero by pressing the ZERO key twice To stop the auto mode press the EXIT key When you leave the auto mode the valve automatically returns to the WASTE position 4 6 Remote Mode Remote Mode lets you control the valve through an external contact closure The operation is very simple The valve position follows the remote input see section 3 3 When the contact closure is open the valve is in the WASTE position When the contact closure closes the
20. valid command received 19 MR 1 00 200 Replacement Parts 6 0 Replacement and Spare Parts List The following parts and accessories are available for the MR 100 and MR 200 Mobile Phase Recyclers Contents Part Part Number 2 VDC Wall Mount Adapter 120V applications 022859871 220V 50 Hz applications 022859935 Tubing 0 020 ID x 0 064 OD length 4 feet 022859145 Tubing 0 032 ID x 0 064 OD length 5 feet 022859951 Flangeless ferrules qty 4 022859986 Ferrule nuts qty 4 022859978 3 Cable hook up wire length 4 feet 022859927 Hook up jumper 022859293 Three way valve 910012967 MR 100 MR 200 User Manua 022859994 RS 232 Serial Connector Cable for MR 200 022860038 Conact Metrohm USA customer service at 800 727 6768 for pricing and availability Please contact the Metrohm USA service department if you have any questions regarding the service and or operation of your recycler All units returned for repair replacement must be accompanied by a return authorization number RMA Contact Metrohm USA customer serivce at 800 727 6768 to obtain return instructions and proper return authorization 20 MR 100 200 Index INDEX AC voltage rating 4 5 6 analog input 4 8 0 20mA 9 4 20mA 9 differential 9 single ended 8 auto mode 2 17 auto zero 4 10 12 delay time 16 display 6 12 display adjustments 6 earth ground 8 EXIT key 12 fluid connections 7 function keys 14 input voltage 4
21. valve switches to the RECYCLE position During remote mode operation the display shows the following DS 000mV VP RECYCL REMOTE 17 MR 100 200 MR 200 Serial Mode 5 0 MR 200 Serial Mode 5 1 Serial Port Interface The MR 200 recycler has an RS 232 serial port located on the back panel of the unit A serial connector PN 022860038 is included with the MR 200 The connector is a standard DB 9 connector used on PC s and other laboratory equipment The pinouts for the connector are shown below PINS 1 6 and 4 connected 5n 4 2 1 O O O O O Pins 78 a connected ER EE ground PA OR N data from recycler tx ET FO HE data to recycler rx The pinouts have been defined so that a straight through DB 9 M F cable can be used to connect the MR 200 to a personal computer The communication settings of the MR 200 are fixed at 9600 baud no parity eight data bits and 1 stop bit 5 2 Serial Mode Command Set The command set of the MR 200 serial mode is based on ASCII characters The MR 200 will automatically enter the serial mode when it receives any characters at the serial port The commands available give full control over the state of the recycler Wx Controls state of the recycler valve x 0 for return standalone operations exits to mode selection menu x 1 for serial control of valve position 2 for valve to follow remote input contac
22. y for setting the delay time is shown below DELAY TIME DT 00SEC INC DEC SELECT INPUT VOLTAGE range is also a setup parameter You have a choice of three settings 1000mV 100mV and 10mV Make sure the input range you select matches the output specification for your detector For current loop applications 4 20mA 0 20mA use an input voltage setting of 1000mV see section 3 2 3 The input voltage range adjustment display looks like this INPUT VOLTAGE 1000mV UP DOWN SELECT SIGNAL LABEL allows you to customize the display for your application Your label choices are mV Au and When you select mV as a label the display will show the voltage at the analog input directly When is selected the display will show the input as a percent of the full scale range By selecting Au the display will show absorption units by assuming a full scale value corresponds to 1 000Au As an example if your input voltage range was 1000 and the input signal 500mV then the Detector Signal will be displayed as follows MAN EN DS 500mV DS 0 500Au DS 50 0 The signal label adjustment display shows the following SIGNAL LABEL mV UP DOWN SELECT 16 MR 100 200 Operation 4 5 Auto Mode The Auto Mode is the normal mode of operation for the recycler This mode automatically controls the valve state based upon the input signal from the detector Normally the valve is off and clean solvent flows through the valve back
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