Fluid Components International FS2000L User Manual
Page 8
Fluid Components International LLC
NuTec
®
Series
This page is subject to the proprietary rights statement on the last page
8
Doc. No. 06EN003348 Rev. D
Detecting Decreasing Flow or [Dry] (Low Flow/[Dry] Alarm, jumper at J2)
Stop the process flow [lower level] allowing the instrument to stabilize. Record the TP1 to TP2 voltage. Average the normal and the abnormal pro-
cess condition voltages (i.e., if the normal reading is 7 volts and the abnormal reading is 8 volts, the average or set point is 7.5 volts). The calculated
set point must be at least 0.04 volts over the normal condition. Change the mode jumper to the Calibrate (Cal) position, (J4). Adjust the cal pot (R25)
until the DVM equals the calculated set point voltage. If the Red LED is off, turn the set point pot slowly counterclockwise until the LED turns on. If
the LED is on, turn the pot (R1) clockwise until the LED turns off, then slowly turn the pot counterclockwise until the LED just turn on. Set the calibra-
tion jumper to the operate position (J3).
Detecting Increasing Flow or [Wet] (High Flow/[Wet] Alarm, jumper at J1)
Start an excessive process flow [raise level] allowing the instrument to stabilize. Record the TP1 to TP2 voltage. Average the normal and the abnor-
mal process condition voltages (i.e., if the normal reading is 7 volts and the abnormal reading is 6 volts, the average or set point is 6.5 volts). The
calculated set point must be at least 0.04 volts below the normal condition. Change the mode jumper to the Calibrate (Cal) position, (J4). Adjust the
cal pot (R25) until the DVM equals the calculated set point voltage. If the Red LED is on, turn the set point pot slowly counterclockwise until the LED
turns off. If the LED is off, turn the pot (R1) clockwise until the LED turns on, then slowly turn the pot counterclockwise until the LED just turn off. Set
the calibration jumper to the operate position (J3).
Adjustment by Observation - Input Power, Two Wire (Loop Power)
The following instructions are for both flow and [wet/dry] applications.
NOTE:
Do not adjust R32A and R35A located in the middle of the control circuit.
Detecting Flow or [Wet (high level alarm)]
Set J1 to the “Wet/Flow” position. With the sensing element at no-flow or [dry], turn the set point potentiometer (pot) to the point where the LEDs
toggle back and forth (clockwise to turn on the top LED, CR3, and counterclockwise to turn on the bottom LED, CR2). Turn the pot one turn clockwise
past the point where the top LED (CR3) turns on. Turn on the flow [raise liquid level] and verify that the instrument switches to the alarm state when
flowing or [wet].
Detecting No-Flow or [Dry (low level alarm)]
Set J1 to the “Dry/No-Flow” position. With the sensing element at flow or [wet], turn the set point potentiometer (pot) to the point where the LEDs
toggle back and forth (clockwise to turn on the top LED, CR3, and counterclockwise to turn on the bottom LED, CR2). Turn the pot one turn counter-
clockwise past the point where the bottom LED (CR2) turns on. Stop the flow [lower liquid level] and verify that the instrument switches to the alarm
state when not flowing or [dry].
Section E - Maintenance and Troubleshooting
Maintenance: Typically required for the sensing element. If the process media sticks to the process pipes (or tank) the sensing element should be
cleaned in the same manner and frequency as the process pipe (or tank). Occasionally check for moisture in the control circuit housing and wiring
connections. Check for proper functionality and response time.
Troubleshooting: If the instrument is not operating, go through the installation and adjustment procedures and verify proper installation. If the
instrument fails after some time in service and it has been checked, or if it fails to operate at start up and the installation has been verified, contact
FCI Technical Service. If the instrument is to be returned, obtain a Return Authorization. The form contains a declaration of decontamination cleaning
information that the instrument must comply with before it is shipped to FCI. The telephone number is 1-800-854-1993 or 1-760-744-6950.
OPEN
COLLECTOR
CURRENT
LOOP
-
-
+
+
S
E
T P
O
IN
T
A
DJ
US
T
WET
/
FL
O
W
DR
Y
/
NO
-
FL
O
W
J1
NO-FLOW / DRY (CR3)
FLOW / WET (CR2)
INPUT LOOP POWER
OPEN COLLECTOR
OUTPUT
SENSOR
STATUS
ALARM JUMPERS
SET POINT
ADJUSTMENT POT
PROCESS STATUS
LEDs
P1
C01069-1-1
4
8
12
16
20
CURRENT LOOP (mA)
PROCESS ALARM: 18 mA +/- 0.5mA
PROCESS NORMAL: 14 mA +/- 0.5mA
LOOP STATUS
( mA indications may be reversed. )
HATCHED AREA = INSTRUMENT OR LOOP TROUBLE
C01070-1-1
Figure 13 Loop Power Control Circuit
Figure 14 4-20mA Loop Power Alarm Settings