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Home » Catalogue » FMC Invalco Catalogue » Pressure Switches » Model CADMEX - Adjustable Range Pressure Switch

Model CADMEX - Adjustable Range Pressure Switch

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Model CADMEX - Adjustable Range Pressure Switch

DESCRIPTION

The INVALCO Model CADMEX is furnished with an explosion-proof Micro Switch providing dependable operating for systems requiring electrical control. The standard Micro Switch has SPDT contacts and UL and CSA hazardous area approval. An optional switch arrangement is available with DPDT contacts and spring-loaded design. The DPDT Micro Switch does not have the adjustable differential capability of the SPDT and, therefore, is actuated and released at approximately the same pressure. The CADMEX is offered with a choice of four spring ranges providing a wide range of flexibility in application.

Specifications

Maximum Working Pressure Actuator: See ordering info table.
Control Switch Micro Switch, explosion-proof SPDT (DPDT optional),
15 amps @ 125, 250, 480 Vac. 1/2 amp @ 125 Vdc.
1/4 amp @ 150 Vdc.
Process Connection 1/4” NPT
Materials Diaphragm case - aluminum
Diaphragm - Buna-N

FEATURES

Process pressure is applied to the lower diaphragm chamber, causing the stem to rise against the adjustable upper spring. When the lower drive collar has been raised sufficiently, the Micro Switch will operate. As process pressure decreases, the upper drive collar will lower, which causes the Micro Switch to snap back to its original position.

APPLICATION

The CADMEX Series may be used to alarm or control an overpressure or under pressure or to cycle the process between two pressures. The CADMEX is easily converted to a manual reset style by removing one of the drive collars. By field sealing the threads of the adjusting screw where it enters the upper diaphragm case, pressure may be applied to the upper case as well as the lower allowing the CADMEX to be used as a differential pressure switch.

SETTINGS

Any spring may be set to actuate below its stated range, but because heavier springs are less sensitive, it is recommended that the range be selected to most closely match the application.

Pressure switches will be factory set to the mid-point of range specified.

ADDITIONAL INFORMATION

Note: Dimensions -- Inches to the nearest tenth (millimeters to the nearest whole mm), each independently dimensioned from respective engineering drawings.

Files area
Model CADMEX Manual Model CADMEX Manual
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Dimensions - Inches (mm)
Dimensions - Inches (mm)

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Parts
Parts
Ordering Information

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Check Part # Description Comments Qty
80001102 SPDT - 5-12 psi
80001104 SPDT - 10-27 psi
80001105 SPDT - 25-45 psi
80001111 SPDT - 40-60 psi
80001117 DPDT - 5-12 psi
80001103 DPDT - 10-27 psi
80001118 DPDT - 25-45 psi
80001119 DPDT - 40-60 psi

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Check Part # Description Comments Qty
65003335 Screw 3/8-16x2-1/2 SQHSS
65011037 Nut 3/8-16 Hex Jam
45002455 Upper Diaphragm Case
45003181 Upper Spring Rest
45003246 Spring 5-12 psi
45004446 Spring 10-27 psi
45005435 Spring 25-45 psi
45005436 Spring 40-60 psi
65003530 Nut 1/4-28 Flexloc
45003186 Washer 2 on Top 2 on Bottom
45003159 Diaphragm Plate
65011039 Screw 10-32x5/8 FHMS
45003158 Diaphragm
65011075 Nut 10-32 Hex
67102312 O-Ring BUN-012-90
67101636 O-Ring BUN-113-90
45006344 Bushing
46000909 Set Collar
45006340 Stem
45004876 Cover
45002307 Cover Screw
67102309 O-Ring BUN-007-90
46000710 Case
46000709 Switch Arm
65007700 Washer No. 10 Lock
33100542 Switch SPDT
33110852 Swith DPDT
65005952 Screw 10-32x1/2 BHMS
45002157 Lower Diaphragm Case
45002612 1/4” Bleeder Filter
67102310 O-Ring BUN-008-90

Parts schemas

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