Installation / Operation Manual
Introduction
The 4728 S & W Monitor used in conjunction with a Model 4528 Detector Card and Model
CX-645 Probe, provides continuous on-line monitoring of percent water in crude oil.
The monitoring system measures changes in the product stream capacitance. The di-
electric constant (Dk) (a key factor in capacitance measurement) of the product stream
changes dramatically as water content varies. The change in capacitance is accurately
measured and correlated to percent water by calibration against “shake out” data.
The Model 4728 displays the percent water on a digital indicator and indicator status
lights continuously display the conditions measured by the system. Alarm relays and
a 4-20 mA output can be used to connect the system to other supervisory or control
elements.
Specifications
Input Power
115 VAC +/- 15%, 50/60 Hz, 2 watts
220 VAC (Optional)
14-28 Volts DC @ 130 mA
S&W Range
0-5%, 0-10%, or 0-20%
S&W Alarm Setpoint
0-100% of S&W Range
Input Signal
0-5V DC from 4528 Detector
Indicators
S&W / Setpoint LCD
Merchantable Oil LED, -Green
Excess S&W LED, -Red
Bypassing Oil LED, -Yellow
Outputs
4-20 mA analog
Relays
SPDT Relay, 10 Amp 250 VAC
1/2 Hp 250 VAC, 13A 120 VAC resistive
1/3 Hp 120 VAC, 10 A 30V DC resistive
Time Delay
0-90 seconds adjustable in 10 second steps.
Off delay approximately 10% of on delay time.
Temperature Range
-20°F to 160°F (-29°C to 71°C)
Enclosure
NEMA 4X, Fiberglass, water resistant
NEMA 7, Explosion Proof
Description Part Number
81001114
81001115
81001164
To Next Page
Loading...
Need help?
General
