performance and features makes it ideal for any area
where an extra measure of protection is important
Universal –
Wide Range of Point Level Applications – detects the level of powders, granules, conductive or non-conductive liquids … even the sticky ones.
NULL-KOTE™ Circuitry –
Makes the sensor immune to adverse effects from conductive coating build-up.
High Sensitivity and Stability –
For critical low response applications.
Designed to Survive –
RF immune, vibration-proof, all circuit boards are conformal coated (tropicalized) for extra protection - at no extra cost.
Ten-Year Warranty –
The only level instruments available with this unique assurance of quality.
Easy-On Probe Connection –
Automatically provides simple, fast installation and reliable operation without wires, connectors, or terminal strips. Simply screw probe into the housing.
ROLLOCK™ PROBES –
No part of the probe can fall into the process or be blown from the mounting. No re-tightening of seals required.
Level Sentry Self-Test Function - Automatic Self Test (2 second self test once a minute - continuously). All functional electronic circuitry is tested. A malfunction is reported in the form of an alarmed control relay and a red Test/Fail LED.
Relay Contacts -
Two sets of form C contacts, rated at 10 amperes, 115 Vac or 26 Vdc, resistive load.
Unique Status Indicator – Indicates both presence or absence of material and power "on" with two color LED.
High or Low Fail-Safe –
Field selectable.
Factory Mutual Approval –
Class I, II, III, Div.1,
Groups C, D, E, F, & G
NEMA 4.
Wide Temperature Range –
Standard process temperature: -300 to 500°F (-184 to 260°C).
Time-Delay Included –
0-30 second delay - no extra cost
The Level Sentry Model L3522 Level Controller is a microprocessor based RF Impedance level switch. It incorporates "level sentry" a unique feature that automatically, once every minute, performs a self-test for a potential circuit failure.
In many installations, a point level controller could go for an extended period of time without ever being required to detect an alarm condition. "Level Sentry" ensures the user that when the unit is called upon, it will detect the alarm condition.
The Level Sentry can detect the presence or absence of virtually any process material, from low dielectric constant electrical insulators, to highly conductive, material properties can range from dry powders to liquid materials of virtually any consistency - even thick, viscous materials that severely coat the sensor.
With Factory Mutual Approval, 0-30 second time delay, sensitivity adjustments, selectable failsafe, probe status indicator, along with an economical price, the Level Sentry is a genuine value.
Additional features include: conformal coating, NULL-KOTE™, explosion-proof/weatherproof enclosures, ROLLOCK™ sealed sensor and our unique 10 Year Warranty which means you receive the ultimate in reliability, for a true set and forget installation.
Sensitivity
0.15pF to 1000 pF capacitance.
Operating Temperature
-40 to 150°F (-40 to 66°C).
Temperature Stability
Less than .1 pF/20 F.
Delay Time/Mode
0 to 30 second/delay on and off.
Fail-Safe Mode
Fail-Safe low level or high level.
Field changeable.
Dead Band
10:1 adjustable to 1000 pF max.
Level Sentry Test Function
Automatic Self Test (2 second self test once a minute - continuously).
Relay Contacts -
Two sets of form C contacts, rated at 10 amps, 115 VAC or 26 VDC, resistive load.
Power Requirements
Standard Models:
95/135 VAC, 50-60 Hz, 1.3 watts
12/34 VDC, <1 watt
Optional Model:230 VAC
Electronics Housing
Explosion-proof : NEMA 4
Class I, II, III, Div. 1,
Groups C, D, E, F, & G
Agency Approval
Factory Mutual Research Corporation System Approved when used with the appropriate PRINCO probes.
