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  LEVEL CONTROLS

 
   

Level Probes

 

Princo offers RF capacitance (admittance) level controls for virtually every application. With our exclusive 10 year warranty, Princo RF level controls provide an unbeatable value.

 

 

Princo’s unique SMART ultrasonic level transmitter with narrow beam technology.

 

 

L2610
L2631
L3610
L4610
L4620
Level Probes

Systems I - V
Systems VI - IX
Non-System Probes

 
     

Continuous Probes

For use with PRINCO™ level transmitters

Many factors are involved in selecting a probe for continuous level transmitters and multiple point controllers.  There are electrical, chemical, and mechanical aspects to be considered.

Electrically, a ground reference (such as the vessel wall) must be present and the probe must be built to provide proper response.

Chemically, the probe must be compatible with the process material.  It must be immune to attack and must offer no chance of contaminating the process.

Mechanically, the probe must be able to withstand the pressure and temperature extremes of the application.  In addition, turbulence, consistency, viscosity, abrasion and mounting configuration may also play a role in probe selection.  A flexible probe is required where probe lengths exceed 236 inches or where physical restrictions (i.e., lack of headroom) prevents installation of a rigid probe.

Even though all of these factors may demand consideration when selecting a probe, most applications are easily defined and the proper probe can be quickly selected.

Probe Selection Guide

Listed at right and below are the nine most common types of application and the probe recommended for each.  Please refer to the following pages for a complete description of each system.

Conductive Liquids ~ 100 Micromhos/cm or Higher (water-based liquids)

System

Vessel

Consistency1

Sensor

Model No.

Wetted Surfaces2

I

 Metal

Any

 Rigid

  L101

316 SS & Kynar™ or Teflon™

II

 Metal

Any

Flexible

  L109

316 SS & Kynar or Teflon

 III3

Non-Metal

High

 Rigid

  L127

316 SS & Kynar or Teflon

IV3

Non-Metal

Low

Flexible

  L113

316 SS & Kynar or Teflon

V3

Non-Metal

High

Flexible

  L115

316 SS & Kynar or Teflon

Non-Conductive Liquids ~ 5 Micromhos/cm or less (hydrocarbons, solvents, etc.)

System

 Vessel    

Consistency1

 Sensor

Model No.

Wetted Surfaces2

VI

Any

Low

Rigid

L107

316 SS & Kynar™ or Teflon™

VII

Any

Medium

Rigid

L102

316 SS & Kynar or Teflon

VIII

Any

High

Rigid

L127

316 SS & Kynar or Teflon

IX

Any

Any

Flexible

L115

316 SS & Kynar or Teflon

 

NOTES:

1.  Consistency: The tendency for a liquid to coat or cling to the probe.

2.  If 316 SS is not compatible, use a probe with appropriate covering on all wetted surfaces.

3.  If customer can supply metal ground rod to a level at or below bottom of probe, then System I  or II applies.

Materials of Construction

  • NPT vessel connections are 316 Stainless Steel.  Special alloys can be provided.

  • Seals are Teflon.

  • Ground elements on Systems III through IX are Stainless Steel.

  • Flanges are Carbon Steel (standard), Type 316 or 304 Stainless Steel (optional).  

[For other alloys or material, consult factory]

ModelProbe Covering

     Pressure (PSI) Rating at Temperature Indicated

- 300 °F- 40 °F100 °F250 °F300 °F400 °F500 °F

L101, L102 L104, L107 L109, L113

Teflon or Bare

1250 psi1250 psi1250 psi550 psi450 psi350 psi0 psi

Kynar

1000 psi1000 psi250 psi0 psi
L115, L116 L127 L128

Teflon or Bare

275 psi

275 psi

275 psi

225 psi

210 psi

180 psi

0 psi

Kynar

275 psi

275 psi225 psi0 psi

 

 

800-221-9237

PH:215-355-1500 ~  FAX: 215-355-7766

1020 Industrial Boulevard - Southampton, PA 18966 

Revised: February 13, 2008

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