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Magne-Sonics Series 200
RF Capacitance Electronic Level Switch
 

The 200 Series RF Capacitance level switches are designed for point level alarm or control of conductive and non-conductive liquids, granular materials, foams. pastes. slurries and interface applications.  Dimensional Information

The 200 Series may be used with any Magne-Sonics insulated or driven shield level sensing probe. When a driven shield probe is used, special shield driven circuitry ignores the effect of conduc­tive material build-up on the level probe surface. Other features include adjustable relay time delay to prevent chattering in tur­bulent applications and field-selectable low or high level fail-safe modes of operation.

An optional differential adjustment feature is available for high' low pump control. The 200 Series is also offered with a PUSH­TO-TEST option to verify high level (overflow-) alarm operation without actually filling the vessel. This easy test is performed at the unit or from a remote location via a switch closure. (An adjustable capacitor is switched in parallel with level probe to check proper sensitivity adjustment and that the instrument func­tions properly.)

The electronics are housed in a cast aluminum weatherproof and explosion proof enclosure. Certification options are available for the 200 Series by FM or CSA when used with an insulated type level probe.

The 200 Series enclosures are normally mounted directly on the level probe fitting, but can also be mounted up to 25 feet from the level probe using remote mount accessories.

 
  • Coating Rejection Circuitry
  • Conductive & Non-Conductive Liquids • Explosion Proof Enclosure
  • Time Delay Relay
  • •Field Selectable Hi/Lo Failsafe
  • Integral or Remote Mounting
  • FM and CSA Available
 
Operational:
  • Measurement ................ RF Capacitance
  • Setpoint Range ............. 0.1 to 250pF
  • Temperature Range ....... -40 to 160° F electronics; Wetside -40 to 450° F
  • Protection ..................... RFI, EMI, and designed to pass IEC-801-2 static discharge test
  • Spark Protection ........... 100 amps
  • Power Requirements ..... 120 or 240 VAC ±10%; 50-60 Hz 24 VDC ±4 VDC; 6 watts
  • Relay Function:
  • Output .................. Qty (1) DPDT, Two Form C contacts | 5A Resistive @ 120/240 VAC | 5A Resistive @ 30 VDC
  • Time Delay ........... Adjustable 0-20 seconds, field­selectable to delay on pull-in, drop out, or both directions
  • Fail-Safe ................ Field Selectable Low or High
 
Performance:
  • Sensitivity ..................... 0.2pF
  • Stability ....................... 0.01pF per 24 hrs
  • Temperature Drift ......... 0.01pF per °F
  • Repeatability ................. 0.1 pF
  • Response Time ............. 100 milliseconds minimum
 
Mechanical:
  • Enclosure ...................... Cast aluminum, urethane finish Cl. 1, Div. 1 Grp. C&D
  • Sensor Wetted Mat'ls ... 316 SST and PFA Teflon
  • Connection.................... 3/4" NPT
  • Net Weight ................... 4.5 lbs. (2.0 kg) approximately
 
Model Selection Guide:
Code Electronics
21 Capacitance Switch, 120 VAC 50/60 Hz Powered, DPDT Relay Rated 5A @ 120/240 VAC  
22 Capacitance Switch, 240 VAC 50/60 Hz Powered, DPDT Relay Rated 5A @ 120/240 VAC  
24 Capacitance Switch, 24 VDC 6 Watts Max, DPDT Relay Rated 5A @ 30 VDC  
  Code Electronic Options
  0 None- For Use WIth Standard Electronics Above
  1 Differential Gap For High/Low Pump Control
  2 Push-To-Test Option For Alarm Verification
    Code Probes Connection D1 D2
    G General Purpose 3/4" NPT 3/8" 1/4"
    H Heavy DUty 1" NPT 5/8" 1/2"
    D Driven Shield, RF Shield Driver 3/4" NPT N/A 3/8"
    F Flexible Cable 3/4" NPT 1/2" 3/8"
      Code Wetted Material
      S 316 Stainless Steel - NPT Connection and Probe
        Code Insulation Material
        N Non Required - For Bare Probe Applications
        T Teflon - For Most Applications
        K Kynar - Increased Gain For Low Dielectric Service
          Code Probe Length
          99 Specify In Inches ("F" Probes In Feet)
            Code Mounting
            00 Standard NPT - As Noted
               
21 0 G S T 24 00 Typical Model Number
 
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