Time Mark 409D Data Sheet

TIME MARK is a division of

MODEL 409D

Liquid Level

Controller

 Automatic control of liquid level
Solid-state sensing circuit

Adjustable sensitivity
5-Year Unconditional Warranty

DESCRIPTION

The Model 409D 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, 300 millisecond time delay prevents
oscillation due to wave action. Probe cables may be
shielded or unshielded. If the liquid container is made of

a non-conductive material, a common electrode is

required. Other features include an LED indicator to
show the output relay status and an adjustable

sensitivity setting. Requires a standard 11-pin octal
socket (such as the Time Mark model 51X016).

DIMENSIONS

TOP VIEW

FRONT VIEW

SPECIFICATIONS

Model 409D

Operating voltages

Power consumption 2.5W
Transient Protection 2500VRMS for 10ms
Probe voltage

(open circuit)
Probe current 5mA maximum
Sensitivity adjust 1K ohms-100K ohms
Contacts DPDT
Contact Rating 7.5A @ 240 VAC resistive

Expected Relay Life
Response Time 300ms

Reset Time <1 second
Reset Method Automatic
Time delay accuracy ±5%
Operating Temp - 20° to 60° C
Humidity Tolerance 0-97% w/o condensation
Case Material NORYL
Mounting 11-Pin Socket ( **sold separately)
Weight 4.5 oz. Max.

24 VAC: 20-30 VAC, 50-400 Hz
120 VAC: 90-140 VAC, 50-400 Hz
230 VAC: 200-250 VAC, 50-400 Hz

15 VRMS

Mech: 10,000,000 operations

Elec: 100,000 at rated load

** Order 11-pin socket number 51X016

11440 East Pi n e S t r e e t

Tulsa, O k l a h o m a 7 4 1 1 6

03/17

© 2017 TIME MARK CORPORATION

MODEL 409D

TIME MARK is a division of

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 409D.

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 11-pin socket in a suitable enclosure. A
NEMA-1 rated enclosure, designed for
socket-mounted relays, is available from Time Mark
(part no. 980498).

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.

CO M

PR OB E

ADJUSTMENT

Adjust the sensitivity as needed.

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. .

TYPICAL APPLICATION

11440 East Pi n e S t r e e t

Tulsa, O k l a h o m a 7 4 1 1 6

03/17

© 2017 TIME MARK CORPORATION