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Proximity Level Switches -
Models PAC-30U and PDC-30

Proximity Level Switch

Bulletin Button
Solid State Operation
30mm Industry Standard Housing
Available in AC (Model PAC-30U) or DC (Model PDC-30) Configurations
Easy Installation & Calibration
2-year Warranty

 

Proximity Level Switch

 

The models PAC-30U and PDC-30 proximity bin level switches are solid state point level devices used to detect the absence or presence of bulk solids. The compact configuration makes this product ideal for tight spaces or low cost level detection. As material comes in contact with, or in close proximity to, the PAC-30U or PDC-30, an internal solid state switch is activated. The PAC-30U is AC operated (20-265 VAC) and is universal in that it is switch selectable for either normally open or normally closed operation. The PDC-30 is DC operated (10-40 VDC) and is available in either PNP or NPN configuration, each of which can be wired in either a normally open or normally closed operation mode.

.: Principle of Operation

.: Specifications

.: Warranty

.: Optional Mounting Well

   

 

 
Principle of Operation

The PAC-30U and PDC-30 are RF capacitance-type level controls, which operate by detecting the electrical effect of the surrounding material such as air, plastic pellets or powders. A radio frequency is applied to the proximity switch sensing region and is continually analyzed to determine the influence of the surrounding environment. Since all materials have dielectric constants and conductance values that are different from that of air, the resultant impedance seen by the radio frequency changes whenever material approaches or contacts the sensing region. This influence is measured within the circuitry and compared with the reference point set by the sensitivity adjustment, which determines how much influence must be present before the output changes.

 

 
Optional Mounting Well

Optional Mounting Well

 

 
Specifications

Model PAC-30U:

Housing:

Thermoplastic Polyester

Enclosure Protection:

IP67 (NEMA 4 equivalent)

Power Requirements:

20-265 VAC, 45-65 Hz

Mounting Thread Size:

M30 x 1.5

Sensing Distance:

4 to 25 mm adjustable

Indicator:

LED, yellow

Output:

Normally Closed or Normally Open, Switch Selectable

Leakage Current:

<2.5 mA

Load Current:

10-500 mA

Frequency of Operating Cycle:

25 Hz

Operating Temperature:

-13° to 176° F (-25° to 80° C)

Electrical Connections:

Cable, 6ft(1.8m), 18-20 AWG

Max. Pressure:

1.4 psi

Max. Pressure:
(with mounting well)

125 psi

Approvals:

UL/CSA General Purpose; CE Mark

Model PDC-30:

Housing:

Thermoplastic Polyester

Enclosure Protection:

IP67 (NEMA 4 equivalent)

Power Requirements:

10-40 VDC

Mounting Thread Size:

M30 x 1.5

Sensing Distance:

4 to 25 mm adjustable

Indicator:

LED, yellow

Output:

13-8231, NPN (sinking)
13-8241, PNP (sourcing)

Consumption:

<10.0 mA

Load Current:

0-200 mA

Frequency of Operating Cycle:

100 Hz

Operating Temperature:

–13° to 176° F (-25° to 80° C)

Electrical Connections:

Cable, 6ft(1.8m), 18-20 AWG

Max. Pressure:

1.4 psi

Max. Pressure:
(with mounting well)

125 psi

Approvals:

CE Mark

 

 
Warranty

Monitor Technologies warrants each proximity switch it manufactures to be free from defects in material and workmanship under normal use and service within two (2) years from the date of purchase. The purchaser must notify Monitor of any defects within the warranty period, return the product intact, and prepay transportation charges. The obligation of Monitor Technologies LLC under this warranty is limited to repair or replacement at its factory. This warranty does not apply to any product which is repaired or altered outside of Monitor Technologies' factory, or which has been subject to misuse, negligence, accident, incorrect wiring by others, or improper installation.

 

 

Updated June, 2014

 

 

 
 
QuantiMassTM
Mass Flow Measurement Systems
The QuantiMass in-line mass flow sensor measures the flow of quantities in pneumatic conveying & free-falling processes. The sensor is based on the latest Microwave Doppler Effect technology and provides fast, in-line / on-line measuring without the use of weight scales.
The sturdy, non-intrusive design of the sensor minimizes maintenance. In addition, the compact size of the sensor makes for easy installation into existing processes. Suitable for powders, dust, pellets, and granular up to 0.75 inch (2cm).

Versions:
Ultra Series-Includes controller
PRO Series-Includes transmitter

A practical application for the QuantiMass would be to monitor material flow rates to verify blending mixture ratios.

Principle of Operation:
The QuantiMass Mass Flow Measurement Sensor / Meter is designed with the latest microwave technology and is used to continuously quantify the flow of powders & solids being conveyed in metallic pipes. The QuantiMass is based on technology that has been developed and proven by Muetec Intruments over several years. The measurement process of the sensor is centered on the Doppler effect. The mass flow-rate is determined by evaluating the frequency and amplitude changes during the measurement process. Particles at rest, such as deposits, do not influence the measurement. All powders, dust, pellets and granules can be measured reproducibly, up to the size of 0.75 inch (2cm). The QuantiMass sensor is suitable for continuous in-line / on-line measurements in pneumatic conveying or in free-fall pipelines.

Click here for more information on the QuantiMass
or contact Monitor Technologies LLC at
Tel.: 800-601-6319 in the USA and
Tel.: 630-365-9403 worldwide.
 
>>Download QuantiMass Ultra Bulletin

>>Download QuantiMass PRO Bulletin


>>Download QuantiMass Application Questionnaire (Excel file)

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