Myron L 729II - Manual (Page 57)

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B. OEM FRONT PANEL INDICATORS &
CONTROLS
The simulated OEM front panel illustrations to the right, and
switch and indicator operational descriptions have been pro-
vided to assist the OEM user in identifying and operating the
750 Series II Monitor/controllers.
Refer to Section V.C. for Setup procedures, and Section V.D. for
Check-Out procedures.
1. RED “HIGH SET POINT” LED INDICATOR
The red LED indicator light is ON only when the water’s conduc-
tivity/TDS reading is HIGH or ABOVE the set point adjustment
(LOW or BELOW on Resistivity). May be reversed if desired.
2. GREEN “LOW SET POINT” LED INDICATOR
The green LED indicator light is ON only when the water’s
conductivity/TDS reading is LOW or BELOW the set point
adjustment (HIGH or ABOVE on Resistivity). May be reversed if
desired.
3. “SET POINT” SWITCH(ES)
When the “SET POINT” switch is depressed, the internal set
point reading is immediately displayed on the front panel dis-
play. See figures IV.B.1 thru 4.
4. ANALOG METER OR DIGITAL DISPLAY
Panel mounted analog meter or digital display provide a continu-
ous readout of the water being monitored.
Conductivity/TDS Models 756II & 757II and Resistivity Models
751II & 752II are equipped with analog meter only as shown in
figure IV.B.4.
Conductivity/TDS Models 758II & 759II and Resistivity Models
753II & 754II are equipped with a 3 1/2 digit, 1/2” Liquid Crystal
Digital Display, as shown in figures IV.B.1 thru 3 & 5., with a 4
1/2 digit backlit LCD as an option.
5. OPTIONAL PANEL MOUNTED ITEMS
TP/TPO Module Switch
A digital Monitor/controller with the optional TP/TPO Temperature
Module has an additional switch on the front panel as shown in
figure IV.B.1. This push-button momentary switch when pushed
gives the user a direct reading of the temperature of the solution
from 0-200°C. Additional option TH/THO includes a control
function capability. See figure IV.B.1.
Full Scale Test Switch (PTS/FST)
This optional feature allows the user to see the Full Scale TEST
value without opening the panel to push the internal switch. See
figures IV.B.1 and IV.B.3 for typical examples.
Piezo Alarm
Audible alarm sounds off automatically when the set point is
reached. Mounted by OEM in any convenient location as shown
in figure IV.B.3.
WARNING: THE DISPLAY WILL BE IRREPARABLY
DAMAGED IF THE HARNESS IS INSTALLED UPSIDE-
DOWN. THE HARNESS MUST BE INSTALLED AS
SHOWN IN FIGURE II.E.6.
HIGH
LOW SET POINT
TEMPERATURE
TEMPERATURE
FST
Figure IV.B.1
HIGH
LOW SET POINT
Figure IV.B.2
Digital Conductivity
Monitor/controller with
optional Dual
Alarm/controls
Digital Conductivity
Monitor/controller with
optional Dual
Alarm/controls, and
Temperature with
control function, and
Front Panel Test
Switch.
758II-121-SC-TP-THH-PTS
758II-121-SC
Figure IV.B.5
HIGH LOW
SET POINT
Figure IV.B.4
0 5
4 3 2 1
Figure IV.B.3
HIGH LOW
SET POINT
FST
NOTE: Boxes around displays to simulate OEM
panels.
Analog Conductivity
Monitor/controller
(Single Alarm/control)
Digital Conductivity
Monitor/controller with
optional Front Panel
Test Switch, Single
Alarm/control, and
Piezo Alarm.
Digital
Resistivity
Monitor
754II-11
757II-112
758II-121-PTS-PA