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MODEL 4082
Liquid Level
Controller
l l Level simulator control
l l 2 scaleable 4-20ma outputs
l l Output voltage for probe supply
l l 8 adjustable setpoints with relay outputs
l l LCD level display with zero and span adjustments
DESCRIPTION
The Model 4082 Liquid Level Controller monitors, displays
and controls water level up to 34.6 feet, in a tank or reservoir.
The Model 4082 operates from the 4-20ma input signal
provided by either the Time Mark Model 450 or Model 456-15
Pressure Transducer. This 4-20ma signal represents the
water level to be controlled, where 4ma equals zero feet, and
20ma equals 34.6 feet.
provided to show the water level during normal operation, and
the setpoint values during calibration.
There are eight user-adjustable trip setpoints. As the water
level rises above each trip point setting, the front panel L ED
for that level illuminates, and the corresponding output relay
energizes.
Two 4-20ma outputs, which track the 4-20ma input, are also
provided. These signal outputs can be re-scaled to different
ranges of level by the user. A test control, that simulates an
input signal, is available on the front panel. The test control is
useful for checking the trip setpoints, and overall system
operation.
DIMENSIONS
8.5"
9.5"
Telephone: Main -
(918) 438-1220
Sales - (800) 862-2875
Fax:
(918) 437-7584
E-mail:
sales@time-mark.com
Internet:
http://www.time-mark.com
A liquid crystal display (L C D) is
.19 dia. typ.
(6 places)
10.5"
11.5"
.75"
SPECIFICATIONS
MODEL
Input voltage
Power consumption
Signal input
Signal input load
Dead band
Repeat accuracy
Display type
Display range
Display resolution
Contacts
Contact rating
Signal output
Signal output load
Probe supply voltage
Trip levels
Operating temperature
Humidity tolerance
Enclosure material
10"
Termination
Weight
Agency Approvals
3.55"
4082
120vac, ± 10%
50/60 Hz
6 watts maximum
4-20ma (optional 0-5v), 2 or 3 wire
250Ω maximum
1% of full scale
± 1% of scaled maximum (fixed conditions)
3-1/2 digit liquid crystal display
00.0 to 34.6 w/4-20ma input
(factory set; user-adjustable)
1 decimal place (factory set; user-adjustable)
8 SPDT
10A at 240vac resistive
4A at 120vac inductive
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
300Ω maximum
24vdc regulated
8 setpoints, user-adjustable
+14º to +122º F
0-97% w/o condensation
front panel - 16 gauge steel
rear panel - 20 gauge steel
removable terminal strips
5.5 pounds
UL Recognized (U.S. & Canadian)
11440 East Pine Street
T u l s a , O k l a h o m a 7 4 1 1 6
Doc No. 87A403 04/03 page 1 of 6
© 2003
TIME MARK CORPORATION
TIME MARK is a division of
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Table of Contents
Summary of Contents for AEMT TIME MARK 4082
- Page 1 MODEL 4082 Liquid Level Controller l l Level simulator control l l 2 scaleable 4-20ma outputs l l Output voltage for probe supply l l 8 adjustable setpoints with relay outputs l l LCD level display with zero and span adjustments DESCRIPTION The Model 4082 Liquid Level Controller monitors, displays and controls water level up to 34.6 feet, in a tank or reservoir.
- Page 2 MODEL 4082 Liquid Level Controller READ ALL INSTRUCTIONS BEFORE INSTALLING, OPERATING OR SERVICING THIS DEVICE. KEEP THIS DATA SHEET FOR FUTURE REFERENCE. GENERAL SAFETY POTENTIALLY HAZARDOUS VOLTAGES ARE PRESENT AT THE TERMINALS OF THE MODEL 4082. ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING. DO NOT EXCEED THE OUTPUT OR INPUT RATINGS, AS STATED IN THE SPECIFICATIONS.
- Page 3 MODEL 4082 Liquid Level Controller figure 2 (rear view of board) Telephone: Main - (918) 438-1220 11440 East Pine Street Sales - (800) 862-2875 T u l s a , O k l a h o m a 7 4 1 1 6 Fax: (918) 437-7584 Doc No.
- Page 4 MODEL 4082 Liquid Level Controller figure 4 Mount the Model 4082 Liquid Level Controller in a suitable enclosure. Referring to the terminal block decals on the unit, and in figure 2, make the following connections: OPERATING POWER - Terminal Block J7 ( AC POWER IN Connect a chassis ground to the terminal marked G.
- Page 5 MODEL 4082 Liquid Level Controller 2. You use a transducer with a 20ma output equaling 25 feet. The span is only 25, so a zero is added to For most applications, these controls do not need to be the count. The span is now 250, which meets the adjusted.
- Page 6 MODEL 4082 Liquid Level Controller The eight setpoints are independently set using The 4-20ma output is proportional to, and independent adjustment pots ( on figure 1) on the front panel of the from, the input signal. This allows for very accurate Model 4082 Controller.
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