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.
Self-Check Function
Locally or remotely operated self-check.
Relay Contacts
Two sets: One for data SPDT (Form C) rated "dry" (0 mA) to 2A, and one for power set SPDT (Form C) rated at 10A, 115 Vac or 26 Vdc resistive.
Unique Status Indicator –
(two color) Shows presence or absence of material and also indicates power "on".
Heavy Duty Relay –
10A 115 Vac resistive contacts
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
PRINCO’s High-Perform-X™ L3520 Series level controllers give you the optimum combination of reliability, sensitivity, features, and cost.
Conformal coated electronics, NULL-KOTE™ circuitry, explosion-proof/weatherproof enclosures, ROLLOCK™ probe construction and our unique 10 Year Warranty means the ultimate in reliability.
Excellent sensitivity, coupled with stability of 1 picofarad over the entire operating range, gives you a true set and forget installation.
With Factory Mutual Approval, 10 amp control relay contacts, 0-30 second time delay, coarse and fine sensitivity adjustments, field selectable hi-lo failsafe, and our exclusive probe status indicator, you get all the features you need at a price which makes the L3520 Series an outstanding value.
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 range to 1000 pF max.
Test Function
Pushbutton tests control relay.
Relay Contacts
Two sets:
Data set SPDT (Form C)
rated "dry" (0 mA) to 2A,
Power set SPDT (Form C)
rated 10A, 115 VAC or 26 VDC resistive.
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 PRINCO probes listed below.
