Omega Engineering PHCN-410 User manual

M1811/0694
MEOMEGA”]
Operator’s Manual
pH Controller
Fr Dissolved Oxygen
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PHCN-4 10
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Process Measurement and

..................................................... 3-l
pH Electrode
pH Electrode
3.1 Calibratingthe
.........................................
2-4
2.2.3 Making Output Connections.. ...................................
.2-5
Section 3 Calibrating the
.........................................................
2-3
2.2.2 MakingInputConnections
....................................................................
l-4
Section 2 Installing the Controller
2.1 MountingtheController ..........................................................
2-1
2.2 W iring
the Controller.. ...............................................................
.2-3
2.2.1
ConnectacPower
&packing
the Controller.. ......................................................... l- l
1.2 ControllerDescription ................................................................
1-2
1.3
KeypadDescription .................................................................... l-3
1.4 FrontPanel
Displays
................................................................. l-4
1.5GeneralInformation
.I 1
pH
Controller Operator ’s Manual
SECTION PAGE
Section 1 Getting Started
pan,
without prior written consent of OMEGA ENGINEERING. INC. eleRronic
medium or machine-readable form, in whole or in photo copied. reproduced. translated. or reduced to any
COpyriQht 1994 OMEGA ENGINEERING. INC. All rights reserved. This documentation may not be copied, 0
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model changes, whenever an improvement is possible. This affords
and/or specific problems you
are having with the product.
OMEGA ’s policy is to make running changes, not
Model and serial number of product, and
3. Repair instructions
reoairlcalibration.
2.
and/or specific problems
you are having with the product.
1. P.O. number to cover the COST of the of the
CALIBRATION.
consult OMEGA for current repair/calibration charges.
Have the following information available BEFORE con-
tacting OMEGA:
2. Model and serial number of the product under
warranty, and
3. Repair instructions
B REPAIRS OR
fol-
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for their examination. After
examining and removing contents, save packing
material in the event reshipment is necessary.
ii
l- l
CI& claims unless all
shipping material is saved
.l Unpacking the Controller
RemovethePackingListandverifythatyouhavereceivedall
equipment.Ifyouhavequestionsabouttheshipment,pleasecall
theOMEGACustomerServiceDepartmentatl-800-622-2378or
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Uponreceiptofshipment,inspectthecontainerandequipmentfor
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The carrier will not honor
.
1
.
..
......................................................................
5-l
5 Specifications
Section5.1Specifications
.4-l
4.2 Error Messages
..........................................................................
4-2
Section
Setpoint Value.. ...............................
Setpoint
Value
.................................. 4-l
4.1.2 To Enterthe Lo
pH Controller Operator ’s Manual
Section4 Operating the Controller
4.1 EnteringPHCN-410Hi/LoSetpoints
.................................... 4-l
4.1.1
ToEntertheHi

l-3
1-2
numeticol position from right to left
Select number from
O-9
values
Select
setpoint
s&ted 7.00,4.01 or 10.01 to enter
pH
buffers calibmtion procedure using standard
reby modes (Lo and Hi)
Initiate
setpoint
A
Select
4
CAl/ENIER
SElITEMP
mA
output.
ThePHCN-410featuresfourkeysforenteringallset-up
parametersandperformingcalibration.(RefertoFigurel-l).
Figure l-l. FrontPanelDisplay
pH controllerwithautomatictemperaturecompensation,a4-digit
LEDdisplay,twoSPDTmechanicalrelays,andafixed4-20
pH controllerisamicroprocessor-based
Getting Started
1.2 Controller Description
1.3 Keypad Description
TheOMEGA”PHCN-410

l-4
2-1
c
Figure 2-1. Panel Cutout Dimensions
&
+O.l
pH electrodetothemeter
(seesection3).
Installing the Controller
2.1 Mounting the Controller
RefertoFigures2-land2-2forpanelcutoutandmeter
dimensions.
90 mm
pH input(seesection2.2).Thisis
alsoagoodtimetoinitiallycalibratethe
alone relay activated
1.5 General Information
Werecommendthatyoubench-testallequipmentpriorto
installation.Thisrequireswiringtheequipmentandcheckingrelay
andoutputfunctionsaswellas
lo
Low
7.OO,4.01,
and 10.01; CAL annunciator off when calibration
complete
Hi
High alarm relay activated
mode; display shows pH calibration
pH mode
P”
CAL
Controller in
.
1.4 Front Panel Displays

) , . . .
‘
.

mA output.
2-4
2-5
setpoint is
reached.Thewiringconfigurationisapplicationdependent.
ThePHCN-410hasafixed4-20
setpoint isreached.Whentheloadisconnected
totheNCandCOM,therelayiscloseduntilthe
Setpoint Relays:
Connect the proper load to the NO and COM terminols or the NC
and
COM terminals.
WhentheloadisconnectedtotheNOandCOM,therelayis
openuntilthe
displayed.
2.2.3 Making Output Connections
ForHiandLo
value is not
Automatic Temperoture
Compensotion; however, the temperature
features
Encyclopediam.
Installing the Controller
The PHCN-410
O”C, aresistorwithavalueof100ohmscan
bewiredtoTerminals1and2.Thetemperaturedisplaywillshow
approximately0°C.Foracompletetemperatureversusresistance
table,consulttheOMEGATemperatureMeasurementHandbook
and
25”C, aprecisionresistorcanbeusedtosimulatethe
appropriatetemperaturevaluetotheunit.Forexample,ifthe
controlprocessrunsat
pH
electrode.
IfanATCinputisnotprovidedtothemeter,thetemperature
readingwilldefaultto25°C.Iftheprocesstemperatureisconstant,
butnot
pH electrodeor(in
selectedmodels)builtintothemountingassemblyofthe
pH electrode,builtintothebodyofthe
- see Figure 2-3).
The100ohmPtRTDtemperatureprobecanbeseparatefrom
the
temperature probe to Terminals 1 ond
2 (no
polarity
leads of the
Automatic Temperoture Compensotion (ATC), connect the
100 ohm Pt RTD
combination electrode to the BNC connector on the
bock of the unit.
2.
If using
pH
Installing the Controller
2.2.2 Making Input Connections
1. Connect the

2-6
3- l
pH
electrodehasfailed.
pH buffer7.00wasnotusedorthe
7.00 solution. Press the CAL key.
At this time
the“CAL” annunciator lightwillappear.Whenthe
lightgoesoff,thefirstpointiscalibrated.If“7-E”appearsinthe
display,thismeansthe
pH
buffer
standard place it in
pH electrode;
rinse the electrode with distilled woter, and
compensation probe (if using ATC) to the meter (refer to
Figure 2-3).
Apply power to the instrument.
Remove the electrode protector from the end of the
pH electrode ond temperoture
pH calibrationprocedureisasfollows:
1.
2.
3.
Connect the combinotion
pH measurement.Itisalsonecessarytorecalibratetheelectrode
periodically.Thefrequencyofrecalibrationissystemdependent.
The
pH meterisessentialforaccurate
pH Electrode
Calibrationoftheelectrodetothe
pH Electrode
3.1 Calibrating the
Installing the Controller
Notes
Calibrating the

keypod to store this value into memory.
4-1
3-2
value.
When the desired value is showing in the display, press the
CAL/ENTER
value to the
desired
displayed A keys to change the 4 ond the
panel.
Use
Iit
on the
front
keypod, until the Lo onnunciotor is SET/TEMP
Setpoint Value:
Press the
v&e into memory.
To Enter the lo
k store this keypod
display, press the
CAL/ENTER
value to the
desired value.
When the desired value is showing in the
displayed change the A keys to 4 and
annunciator is lit on the
front ponel.
3.
4.1. 2
1.
2.
3.
Use the
Setpoint Value:
Press the SET/TEMP keypad, until the Hi
pH buffer 4.01 or 10.01. Press the CAL Key. 4.1. 1
Atthistimethe“CAL”annunciatorlightwillappear.Whenthe
lightgoesoff,theslopeiscalibrated.
1.
2.
To Enter the Hi
Setpoints Hi/Lo 4.1 Entering PHCN-410
stondord place the electrode in water ond electrode with distilled
pH buffer 7.00. Rinse the pH electrode from the 4. Remove the
pH
Electrode
Operating the Controller
Calibrating the

Notes
Notes