The Model 4052 Pump-Down Controller provides total
control for duplex pumping systems. The Model 4052
monitors, controls and displays the liquid level in a tank
or reservoir. Maximum selectable depth is from 11.5 ft.
to 346 ft.
The input to the Model 4052 can be from any 2 or 3-wire
transducer with a 4-20mA output representing the
selected depth. A 24VDC regulated probe supply is
included. A Level Simulator is provided to aid in
programming these five set points; Low Alarm, Pumps
Off, Level 1, Level 2 and High Alarm.
A universal zero to 30 second On Delay can be
programmed to prevent outputs from closing due to
input fluctuations caused by turbulent conditions. An
additional 4-20mA output with zero and span controls is
provided for a chart recorder or other external device.
Four heavy-duty 10 amp, 120V contacts are provided
for pump control and alarm activation. An auto-dialer or
other emergency device can be activated with the SPDT
power loss relay. This relay is held open when power is
applied.
Pump outputs include duplex alternation as well as
hand-off-auto switches. Pump run-time can be
displayed for each pump with tenth of an hour
resolution, up to 99,999.9 hours. The Model 4052 can
be panel-mounted (11 1/8” x 4 5/8) or surface-mounted
using the optional surface-mounting kit (Model 4000).
SPECIFICATIONS
MODEL 4052
Input Voltage 120VAC ± 10% 50/60Hz
Pwr Consumption 8W max.
Signal Input 4-20mA (optional 0-5V), 2 or 3 wire
Signal Input Load 250 ohms max.
Dead Band 1% of full scale
Repeat Accuracy ± 1% of scaled max. (fixed conditions)
Display Type 6 digit red LED display
Display Ranges Level: 00.0 to 346 ft
Runtime: zero to 99,999.9 hours
Delay: zero to 30 seconds
Display Resolution 1 decimal place
Control Contacts 4 SPDT 10A at 120VAC resistive
Power Loss Relay 1 SPDT 5A at 120VAC resistive
Signal Output Output is factory set to track the 4-20mA input.
Zero and span adjustments are provided: as
little as a 2mA change can cause a full swing of
the output.
Signal Output Load 300 ohms max.
Probe Supply 24VDC regulated
Setpoints 3 levels, 2 alarms, all user-adjustable
Operating Temp +14º to +122º F
Humidity Tolerance 0-97% w/o condensation
Enclosure Material 16 gauge steel
Termination removable terminal strips
Dimensions H: 5.5” W: 12.0” D: 4.75”
Weight 6.0 pounds
panel or suitable enclosure (see Time Mark’s Model 4000 Surface Mount kit).
Referring to the terminal block decals on the unit, and
Figure 2, make the following connections:
SIGNAL INPUT
With a 3-wire 4-20mA transducer (see Time Mark
Model 450) remotely mounted, connect the +24VDC
OUT terminal to the voltage input of the transducer
(figure 3). Connect the 4-20mA IN terminals to the loop
terminals of the transducer. OBSERVE POLARITY.
figure 3.
Connect a 2-wire transducer (pressure, ultrasonic, etc.)
as shown in figure 4.
figure 4.
SIGNAL OUTPUT
The 4-20mA output is proportional to the input signal.
This allows for very accurate remote monitoring of level
changes. The factory default is for the output to track
the input; that is, a 4mA signal represents 00.0 feet, and
a 20mA signal represents 34.6 feet. However, the
output can be zeroed and spanned to a specific range,
not necessarily the same as the reading on the LED
display.
The 4-20mA OUT terminals may be connected to a
remote display or other devices. Connect these
terminals as required for your application. OBSERVE
POLARITY of the connections.
RELAY OUTPUTS
SPDT contacts are provided for PUMP 1, PUMP 2, HIALARM, LO-ALARM and POWER FAIL relays. Make
wiring connections as required.
OPERATING POWER
Connect a chassis ground to the lug marked GND and
the terminal marked G.