Lumenite® Control Technology, Inc. • 90 Years • Engineers • Designers • Manufacturers
Lumenite® Control Technology, Inc. • 90 Years • Engineers • Designers • Manufacturers
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Sample Part# MLST-4220-C2 Continuous RF Capacitance Level Transmitter, 4-20mA, 20-4mA, 1-5VDC or 5-1VDC operation, 3 push button calibration, any sanitary or industrial tank connection available, probe UP TO 72 inches (6 feet) at no additional charge.
4220 microprocessor based level transmitters operate on the capacitance principle providing a continuous level measurement output.
What Is Capacitance?
Capacitance is expressed as the ratio of the electric charge on each conductor to the potential difference (i.e., voltage) between them.
With level transmitters, the output signal in milliamps is dependent on the capacitance formula :
Dielectric Constant x Area of Parallel Plates ÷ Distance Between Parallel Plates or C = KA / D
where the dielectric constant “K” is a value greater than 1. The value “A” is dependent on the diameter and length of the level probe. The value “D” is the distance from the probe to the tank wall, ground reference probe or concentric tube. Consequently, capacitance (C) and the resultant mA output increases as the dielectric constant increases, the probe diameter and length increases, and the distance from the probe to tank wall (ground probe or tube), decreases.
continuous level transmitters are for sanitary and industrial level transmitter applications. A capacitance level transmitter provides a continuous 4-20mA, 20-amA, 1-5VDC or 5-1VDC analog output proportional to the material level in any shaped tank. They can be used for conductive, non-conductive liquids and moist granular solids.
are combination continuous level transmitters and temperature transmitters for sanitary and industrial applications. In addition to having all of the standard specifications, they provide 2 separate 4-20mA outputs measuring level and temperature with one probe and one tank connection. Temperature ranges from -100˚ to 1,000˚F.
Conforms to NEMA Type 4, 4x, 12 and 13 waterproof and corrosion resistant. Constructed with 14 gauge 304 s.s.
Conforms to Class I Groups C & D, Class II Groups E, F, & G and Class III suitable for wet locations. Applicable Standards : Nema 7, 9 and 4x.
• Resolution to better than 1 part in 10,000
• Accuracy and repeatability to less than 0.1% of span
• Microprocessor based capacitance level transmitters with on
board digital to analog conversion assuring negligible output
current error of 0.003%
• Linearity of better than 0.003% over industrial temperature
range of -20˚F to 160˚F
• Designed with most up to date surface mount, integrated
circuits and components
• Standard range of 0.0001 picofarads to 15,000 picofarads
allowing the 4220 to span 4-20mA over 1 inch of water,
(high sensitivity) or hundreds of feet of water (low sensitivity)
• Non interacting zero and span
• Cancel Coat™ circuitry and superior resolution eliminate the
readout errors cause by conductive coatings on the continuous
level controls sensing probe
PURCHASE DIRECT From Lumenite®
At Lumenite® Control Technology, Inc., we are committed to providing high-quality manufacturing services that exceed our clients' expectations. In short, our mission is to customize and provide cost effective, innovative liquid level solutions to fit your needs.
- 4220 continuous 4-20mA output capacitance transmitter
- Sanitary 304 s.s. Housing
- 3/4 inch 304 s.s. NPT connection
- 48.5 inch teflon encapsulated 304 s.s. rod
- 4220 continuous 4-20 mA output capacitance transmitter
- 4220 continuous 4-20mA output temperature transmitter
(FYI : Both 4220 transmitters mount in single housing and utilize a single rod)
- Sanitary 304 s.s. Housing
- 4 inch 304 s.s. tri-clamp connection
- 60 inch teflon encapsulated 304 s.s. rod
- 4220 continuous 4-20mA output capacitance transmitter
- Industrial XP housing (standard XP housing conforms to Class 1 Groups C & D, Class 2 Groups E, F & G and Class 3 suitable for wet locations) Nema 4x, 7 & 9
- 3/4 inch 304 s.s. NPT connection
- 32 inch teflon encapsulated 304 s.s. rod
- 4220 continuous 4-20 mA output capacitance transmitter
- 4220 continuous 4-20mA output temperature transmitter
(FYI : Both 4220 transmitters mount in single housing and utilize a single rod)
- Industrial XP housing (standard XP housing conforms to Class 1 Groups C & D, Class 2 Groups E, F & G and Class 3 suitable for wet locations) Nema 4x, 7 & 9
- 3 inch 304 s.s. tri-clamp connection
- 38 inch teflon encapsulated 304 s.s.
- 4220 continuous 4-20mA output capacitance transmitter
- Sanitary 304 s.s. Housing
- 4 inch 150LB 304 s.s. flange connection
- 34 inch teflon encapsulated 304 s.s. rod
- 4220 continuous 4-20mA output capacitance transmitter
- Sanitary 304 s.s. Housing
- 2 inch 304 s.s. tri-clamp connection
- 170 inch teflon insulated cable probe
In this video you will learn how to calibrate the 4-20mA set points and set the low and high based on the level of liquid in your tank.
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2331 17th Avenue, Franklin Park, Illinois 60131, United States
Main : 1(847) 455-1450 Fax : 1-847-455-0127 Outside U.S.A. : 0011-847-455-1450 General E-Mail : customerservice@lumenite.com Technical Support : technicalsupport@lumenite.com 24/7 Technical Text Support : 1-630-721-3319
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Lumenite® Control Technology, Inc.
2331 N 17th Ave.Franklin Park, IL 60131 USA
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