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Mercoid div. of Dwyer Instruments Inc.

Series 75 Torque Tube Type Level Control
M75 Picture
  • Direct Action
  • Mercury Contacts
  • UL and CSA listed

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    Torque tube design eliminates O-rings and packing in Model 75 Level Controls. Float assembly removes easily from the chamber for periodic inspection. Four 1" NPT process connections provide for top/bottom flow through or side/side mounting. Enclosures are available in general purpose, or explosion proof for Class 1, Group D; Class 2, Groups E,F,G. NEMA-7,9 for hazardous locations. Cast iron chambers are available for pressure to 300 PSIG (21 Bar) at 425°F (218°C). Case steel and 304 stainless steel chambers are rated for 400 PSIG (28 Bar) at 500°F (260°C). All types will operate to a minimum specific gravity of 0.66.

    Specifications

    Maximum Pressure: See configuration chart
    Maximum Temperature: See configuration chart
    Minimum Specific Gravity: 0.66
    Process Connection: 1" NPT, female
    Electrial Rating: See configuration chart
    Conduit Connection: 1/2"
    Level Variation to
    Actuate Switch:    		 1" (25.4 mm)
    Housing: NEMA-1, painted steel, transparent cover
    NEMA-7,9 cast aluminum
    Float: 304 stainless steel
    Weight: 35 lbs (with NEMA-1 Enclosure)

    Model 75/76 Part Number Configuration Chart

     
    Housing 75KM
    75KXM
    76KEM
    76KXEM    		 General purpose, NEMA-1 enclosure. Construction A and C only.
    General purpose, NEMA-1 enclosure, Construction A1, A2, C1, C2 only.
    Explosion Proof, Class I, Group D; Class II, Groups E,F,G. NEMA-7,9. Construction A and C only
    Explosion Proof, Class I, Group D; Class II, Groups E,F,G. NEMA-7,9. Construction A1, A2, C1 and C2 only
    Construction A
    A1
    A2
    C
    C1
    C2    		 Cast iron chamber*, brass trim. Maximum Pressure: 300 PSIG (21 Bar). Maximum Temperature: 425°F (218°C)
    Cast steel chamber, brass trim. Maximum Pressure: 400 PSIG (28 Bar). Maximum Temperature: 500°F (260°C)
    Cast 304 stainless steel chamber, brass trim. Max. Pressure: 400 PSIG (28 Bar). Max. Temperature: 500°F (260°C)
    Cast iron chamber*, 304 stainless steel trim. Max. Pressure: 300 PSIG (21 Bar). Max. Temperature: 425°F (218°C)
    Cast steel chamber, 304 stainless steel trim. Max. Pressure: 400 PSIG (28 Bar). Max. Temperature: 500°F (260°C)
    Cast 304 stainless steel chamber, 304 S.S. trim. Max. Pressure: 400 PSIG (28 Bar). Max. Temperature: 500°F (260°C)
    Circuit 4820
     

    4821
     

    4815
     

    4823
     
     

    4831
     
     

    4849
     
     

    4853
     
     

    4855
     
     

    4874

    		 SPST mercury switch. Open on level increase. Rated 10 amps 120 VAC/DC, 5 amps 240 VAC/DC
    Motor rating 1 hp 120 VAC; 3/4 hp 240 VAC; 1/3 hp 120/240 VDC.

    SPST mercury switch. Close on level increase. Rated 10 amps 120 VAC/DC, 5 amps 240 VAC/DC
    Motor rating 1 hp 120 VAC; 3/4 hp 240 VAC; 1/3 hp 120/240 VDC.

    SPDT. Consists of two SPST mercury switches, electrically independant. One circuit closes as the other circuit opens.
    Each switch rated 10 amps 120 VAC/DC, 5 amps 240 VAC/DC.

    SPDT. Consists of two SPST mercury switches, electrically independant. One switch closed at low and intermediate level,
    open at high level. One switch closed at high and intermediate level, open at low level..
    Each switch rated 10 amps 120 VAC/DC, 5 amps 240 VAC/DC.

    SPDT. Consists of two SPST mercury switches, electrically independant. One switch closed at low level, open at intermediate level
    and high level. One switch closed at low and intermediate level, open at high level..
    Each switch rated 10 amps 120 VAC/DC, 5 amps 240 VAC/DC.

    SPDT. Consists of two SPST mercury switches, electrically independant. One switch closed at low level, open at intermediate level
    and high level. One switch closed at high level, open at intermediate and low level..
    Each switch rated 10 amps 120 VAC/DC, 5 amps 240 VAC/DC.

    Consists of one SPDT and one SPST mercury switch. SPDT switch has one circuit closed at low and intermediate level,
    open at high level. One circuit closed at high level, open at intermediate and low level. Rated 4 amps 120 VAC/DC, 2 amps 240 VAC/DC.
    SPST switch closed at high and intermediate level, open at low level. Rated 10 amps 120 VAC/DC, 5 amps 240 VAC/DC.

    Consists of one SPDT and one SPST mercury switch. SPDT switch has one circuit closed at low level, open at intermediate and
    high level. One circuit closed at high and intermediate level, open at low level. Rated 4 amps 120 VAC/DC, 2 amps 240 VAC/DC.
    SPST switch closed at low and intermediate level, open at high level. Rated 10 amps 120 VAC/DC, 5 amps 240 VAC/DC.

    Consists of three SPST mercury switches. One switch closed at low and intermediate level, open at high level. Two switches closed at high and intermediate level, open at low level. All switches rated 10 amps 120 VAC/DC, 5 amp 240 VAC/DC.
    * Cast iron chamber is not for use with lethal or flammable substances, either liquid or gaseous.

    Popular Models

    75KM-A-4820
    75KM-A-4821
    75KXM-A1-4820
    75KXM-A1-4821
    75KXM-C2-4820
    75KXM-C2-4821

    Contact Us!

    Sherman Instruments
    John Sherman Agencies Ltd.
    1641 Venables Street
    Vancouver, British Columbia, Canada
    V5L 2H1

    Phone: 604-254-9622
    Fax: 604-254-3123

    e-mail: info@johnsherman.com
     
     
     
     

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