Myron L Aquaswitch II - Manual (Page 21)

F . 0-10VDC RECORDER OUTPUT
The 0-10VDC output is designed to give the user the capability of
sending a signal to a remote meter, recorder, PLC or SCADA
system.
1. CONNECTION
1. Place the user supplied interface cable and watertight
cable restraint into the enclosure's appropriate access
hole. Skip for OEM.
2. Connect the Recorder's plus (+) and minus (-) terminal
wires to the Recorder output connectors. (See figure
II.E.1.)
3. Refer to Section V.D.1.b for the procedures to calibrate
the 0-10 VDC voltage output.
2 . V O L T A G E D I V I D E R
A voltage divider gives the user the ability to scale or tailor the
output to a particular need or requirement due to the input of
another device, i.e. the output of the Main CB is 0-10V while the
input requirement of a particular recording device is 0-5V.
a . INSTALLATION
Briefly—
Two resistors are installed across the 0-10V output.
The output is recalibrated to required voltage.
Requirements
Select two (2) resistors as listed;
For 0-5V Output both "A & B" are 2K Resistors.
For 0-1V Output "A" is a 9K resistor and "B" is a 1K resistor.
!
CAUTION - READ FOLLOWING CAREFULLY
WARNING: BEFORE STARTING, IF THE
AQUASWITCH IS INSTALLED, ENSURE THE POWER
I S OFF. FAILURE TO DO SO COULD CAUSE DAMAGE
TO THE INSTRUMENT, AND COULD BE HARMFUL OR
FATAL TO PERSONNEL. ONLY QUALIFIED
PERSONNEL SHOULD INSTALL ELECTRICAL
E Q U I P M E N T .
Physical
If the front panel has all ready been removed from the enclosure
skip to #3.
1. Using a standard slot screwdriver remove the two (2)
screws on the front panel.
2. Carefully wiggle the front panel and pull gently toward
you. Do not pull more than about 8 inches/20CM or you
could damage the wiring harness.
3. Turn the front panel around so that the back side is
facing you and set aside for now.
4. Solder two selected resistors together as shown in figure
II.F.1.
5. Attach leads to recording device as shown in figure
II.F.1.
6. Attach resistors to 0-10V Output as shown in figure
II.F.2.
Ensure resistors and leads DO NOT short to each other
or to any part of the CB assembly.
7. Recalibration is required, see Calibration Procedures,
section V.D.
Reassembly
1. Carefully reinstall the front panel, bottom first, ensure no
wires have been pinched.
2. Reinstall the two (2) screws and tighten.
3. To operate, turn power ON.
18
Figure II.F.1
0 - 1 0 V O u t p u t
+
-
A
B
+
-
Recording
Device
Figure II.F.2
FS SW
3 S
SENSOR LEADS
CAL
Main CB Assembly
0 - 1 0 V D C
OUTPUT
- +
NEW
OUTPUT
AS
SELECTED
BK WT RD GN NU R- R+