Time Mark 409 Data Sheet
MODEL 409
Liquid Level
Controller
Automatic control of liquid level
Solid-state sensing circuit
Adjustable sensitivity
5-Year Unconditional Warranty
DESCRIPTION
The Model 409 is a compact, socket-mount device for
level control of conductive liquids. The internal relay is
energized when operating power is applied. When the
liquid level reaches the probe, the relay de-energizes.
When the level drops below the probe, the relay will
reset. A fixed, two second time delay prevents oscillation due to wave action. Probe cables may be shielded
or unshielded. If the liquid container is made of a nonconductive material, a common electrode is required.
Other features include an LED indicator to show the
output relay status and an adjustable sensitivity setting.
Requires standard 8-pin octal socket (socket number
51X00120-01).
DIMENSIONS
SPECIFICATIONS
Model 409
Operating voltages 24VAC: 20-30VAC, 50-400Hz
120VAC: 90-140VAC, 50-400Hz
230VAC: 200-250VAC, 50-400Hz
Power consumption 2.5W
Transient Protection 2500VRMS for 10ms
Probe voltage (open circuit) 15VRMS
Probe current 5mA maximum
Sensitivity adjust 1K ohms-100K ohms
Contacts SPDT
Contact Rating 10A @ 240VAC resistive
Expected Relay Life Mech: 10,000,000 operations
Elec: 100,000 at rated load
Response Time 2 seconds
Reset Time <1 second
Reset Method Automatic
Time delay accuracy ±5%
Operating Temp -13º to +140º F
Humidity Tolerance 0-97% w/o condensation
Case Material ABS plastic
Weight 6.2 oz. Max.
(dimensions have a tolerance of ±0.06)
© 2013
TIME MARK is a division of
11/2013
TIME MARK CORPORATION
MODEL 409
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 409.
ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.
THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.
Installation Instructions
INSTALLATION
Mount the 8-pin socket in a suitable enclosure. A
NEMA-1 rated enclosure, designed for
socket-mounted relays, is available from Time Mark
(part no. 98A498).
Referring to the pin diagram on this page or on the
unit connect appropriate AC operating power.
Connect the probes as needed, and connect the
output relay as appropriate.
ADJUSTMENT
Adjust the sensitivity as needed.
TYPICAL APPLICATION
WARRANTY
This product is warranted to be free from defects in
materials and workmanship, and is covered by our
exclusive 5-year Unconditional Warranty. Should this
device fail to operate for any reason, we will repair it for
five years from the date of manufacture. For complete
warranty details, see the Terms and Conditions of
Sales page in the front section of the Time Mark catalog
or contact Time Mark at 1-800-862-2875.
© 2013
TIME MARK is a division of
11/2013
TIME MARK CORPORATION
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