Myron-l 729II Manuel d'utilisateur

INSTALLATION • OPERATION • MAINTENANCEpH Models: 721II, 722II, 723II & 724IIORP Models: 726II, 727II, 728II & 729IIWater Quality Instrumenta

LINEARITY Electronics:±0.05%(±0.01pHunits/±1mVoffullscale)RESOLUTION DigitalDisplay:±0.01pHunits/±1mV AnalogMeter:±0.13pHunits/±

E. SENSORS 1. pH720 series II pH Monitor/controllers use the P72 series sensors.Its compact size allows mounting in a standard 1/2” or 3/4” MN

G. 720 SERIES II CONFIGURATION GUIDE pH & ORP pH requires P7XX series sensor ORP requires 07XX series sensor 721I

II. INSTALLATIONA. GENERALThis section provides the recommended procedures for properly installing the 720 Series II pH/ORP Monitor/controller, and

4. Slide the enclosure through the panel cutout   untilitsangecontactsthepanel. 5. Insertmountingscrewsthroughtheange mounting

D. SENSOR INSTALLATIONThe pH/ORP Sensor’s mounting orientation must provide a continuousandadequatecirculationowtopreventthetrapping of a

E. ELECTRICAL INSTALLATIONThe electrical installation procedures provided in this manual are commontoallpH&ORPMonitor/controllers.Seeg

Specications:As required to meet USP 25. InstallationBriey-TheBLACKandWHITEsensorleadsareREVERSEDinthesensor connector. Requirements:No

controller set point until the alarm/piezo sounds off. If controller is not yet connected to a functioning sensor, it may be necessary t

1. Grasp connector and align wires DOWN on display or   withthesmalledgeofthedisplayasshowningure II.E.5. 2. Press connector

G. RE-CONFIGURE YOUR MONITOR/CONTROLLER (Conguration Module Installation) 1. DESCRIPTIONThe 720 Series II Monitor/controllers have been

3. CHANGING ANALOG METER SCALE (DIAL)Afterchangingcongurations(pHtoORPorvisaversa)onan analog model 720II it will be necessary to cha

8. Reverse the above procedure using the new scale.NOTE: While replacing the clear plastic cover, ensure the ZA screw pin on the cover aligns with

III. OPTIONS & ACCESSORIESA. SC/SCO MODULE (SECOND ALARM/CONTROL OPTION) (Digital & OEM Models ONLY)-SC Second A

Front PanelWARNING: there are two (2) O-rings installed on the switches, one (1) on the shank and the other is under the push button. Both of these

The following instructions describe the steps for converting the Monitor/controller.RefertogureIII.A.4forthelocationoftheSPC(s) on your Mon

c. Hysteresis (Dead Band) Adjustment*The hysteresis or dead band is approximately ±3% of the set point at full scale as it leaves the factory. Un

B. 4A/4AO MODULE (4-20mA OPTION)Available only on the digital models 728II, 729II, 723II and 724II, or analog and digital OEM. -4A 4-20mA Self/

FATAL TO PERSONNEL. ONLY QUALIFIED PERSONNEL SHOULD INSTALL ELECTRICAL EQUIPMENT. PhysicalIf the front panel has all ready been removed from

requirements, i.e. self-powered or remote-powered, see   gureIII.B.5. 3. Turn power ON 4. Press the SPAN (GAIN) Test Switch with the fro

If you read nothing else in this manual please read this Quick Reference Guide. PLEASE READ and COMPREHEND ALL WARNINGS, CAUTIONS and ADVISEMENTS CO

4. CONVERTING A CURRENT TO A VOLTAGECurrent measuring devices actually measure voltage, but have an internalresistorasshownin

C. TEMPERATURE MODULE (Digital Models only)-TP Temperature Module ordered with Monitor/controller.TPO Temperature Module ordered sepa

5. Set front panel down or carefully allow to hang from the harness. Do not drop as the harness connector will pull out allowing the fron

a. TPC “Calibration” Module ProcedureThis procedure assumes the front panel is removed. 1. Ensure power is OFF. 2. Remove the sensor leads

19. Continue or reinstall the front panel and tightly secure retaining screws, see REASSEMBLY, page 31.CAUTION:Thesensorinputand0-5VDCout

b. Temperature Set Point Adjust 1. Ensure power OFF. 2. Ensure the SCO Module Set Point control is set to FULL counter clockwise positio

5. OEM INSTALLATIONAn OEM installation requires an additional display harness, part number TPMH. This harness is installed between the Temperatu

6. OEM INSTALLATIONb. Dual Display Models SPECIAL ORDER These models allow simultaneous display of both Cond/TDS, RES or pH/ORP and Temperature.

D. ALARM/CONTROL KIT (Digital & OEM Models only) -TH Controller wiring Harness (requires second alarm/control module) ordered

by pulling lightly on the wires. It may be necessary    touseasmallatscrewdrivertoslightlyspreadthe   retainingring.Seegure

3. Press and hold the “SET POINT” switch on the front panel. Using a tweaker or a small screwdriver, adjust the Set Point trimmer adjustment screw

   frontasshowningureIII.D.2. c. Remove harness from SCO Module by pulling on    harness,seegureIII.D.3. d. Set SCH harness

8. Turn SCO Set Point control fully counter clockwise - it   maybe30turns-untilitclicks.SeegureIII.D.7for location. 9. Locat

Set Point Conversion (SPC) / Reversing Set PointThe Myron L Company ships the Temperature controller conguredtoAlarm/controlwhenthetemperature

E. DUAL TEMPERATURE MODULE & 4-20mA OUTPUT MODULE (Digital and OEM Models ONLY) -TP/TPO Temperature Module.-4A/4AO 4-20mA S

40F. PIEZO ELECTRIC ALARM -PA Piezo Electric Alarm ordered with Digital Monitor/controller.PAO Piezo Electric Alarm ordered separate

41REASSEMBLYBefore reassembly, ensure set point control is set to desired trip point.  1. Carefullyreinstallthefrontpanel,bottomrst.Ensuren

42G. REMOTE ALARM - RA™ RA Ordered as an accessory, includes 8” harness with connector, and two (2) wire nuts. 1. DESCRIPTIONThisremote

43 10. If three minutes is too long or too short, adjust control inside RA until desired mute time is achieved (adjustable from approximat

44IV. OPERATING PROCEDURESA. FRONT PANELThe front panel illustrations to the right, switch and indicator operational descriptions have been provide

45B. OEM FRONT PANEL INDICATORS & CONTROLSThe simulated OEM front panel illustrations to the right, and switch and indicator operatio

1HIGHLOWSET POINTpH720IIMYRON LCOMPANY720 Series IIModel 723II-SC(A Digital pH Monitor/controller,with a Second Alarm/Control)

46C. SETUP PROCEDURES These Setup procedures cover (1) converting the alarm circuit to trigger on a decreasing or increasing reading, (2) checkin

47 REASSEMBLY 1. Carefullyreinstallthefrontpanel,bottomrst.Ensureno wires have been pinched between enclosure and front panel.

48A. PRIMARY COMPONENT IDENTIFICATIONAsidentiedinSectionIII,theMonitors/controllersswitch(es)and indicator components are mounted directly

49V. COMPONENT IDENTIFICATION, CALIBRATION AND PREVENTIVE CAREB. METER MECHANICAL ZERO PROCEDURESANALOG METERS ONLY 1. Ensure power

50gureV.A.1forlocationofitemsdescribedbelow.ADVMsettoDCVoltsisrequired.Note: For digital panel display perform step 8. For analog

51 5. TRANSFER STANDARD METHODAnother method of calibrating a Monitor/controller is via the transfer standard. Instead of removing the entire Monit

52VI. OPTIONS & ACCESSORIESA. OPTIONS ORDERED WITH MONITOR/CONTROLLERPART # DESCRIPTION -SC Second Alarm/control Module -4A

53C. STANDARD SOLUTIONS & BUFFERS 1. pH and ORP BUFFER SOLUTIONSYourpHand/orORPMonitor/controllerhasbeenfactorycertiedtomeetcertai

54VII. REPLACEMENT PARTS PART # MONITOR/CONTROLLER MODEL pH721PB 721II pH Circuit Board Analog Monitor Only722PB

55VII. REPLACEMENT PARTS ContinuedPART# FRONT PANEL with UPPER and LOWER LABELS ONLY pH Continued724FP Digital Front Panel 724FP-PTST

2TABLE OF CONTENTSSECTION PAGE 720 Series II ILLUSTRATION (723II-SC) 1I. INTRODUCTION . . . . . . . . . . . . . . . . . .

56VIII. WARRANTYAll Myron L Company pH and ORP Monitor/controllers have a TWO-year warranty. If any Monitor/controller fails to function

57IX. GLOSSARY442™ An Internationally recognized “natural water” standard developed by the Myron L Company in 1964. Algorithm A procedure for solvi

58X. NOTES

59XI. ADDENDUMA. pH, ORP and TEMPERATURE RELATIONSHIPS 1. pH a. pH as an IndicatorpH is the measurement of Acidity or Alkalinity of an aqueous

60 e. Sources of ErrorBecause sources of error are much the same as for pH. Though the platinum surface will not break like the glass pH surface,

Water Quality InstrumentationAccuracy • Reliability • Simplicity© Myron L Company 2011 720IIOM 10AU11MYRON L COMPANY2450 Impala DriveCarlsbad, CA 920

TABLE OF CONTENTS ContinuedSECTION PAGE 3. Recalibration . . . . . . . . . . . . . . . . . . . . . . . . . . .

TABLE OF CONTENTS ContinuedSECTION PAGEVI. OPTIONS & ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . .

I. INTRODUCTIONThank you for selecting one of the Myron L Company’s new 720 Series II Monitor/controllers. The 720 Series II is based on input from