THERMOSTATIC VALVES

Industrial automation

MODULAR PRESSURE SWITCHES
Explosion-proof execution Ex d

ELECTRIC CONSTRUCTION:
Degree of protection IP66 (NEMA 4X)
Electrical safety class: class I (EN61298-2:1997-06)
Protection mode std): explosion-proof
GAS Ex d IIC T6/T4 Ga/Gb
DUST Ex ta/tb IIIC T85/T135 Da/Db
 ENCLOSURE: case and cover copper free aluminium alloy,
threaded coupling with tamper proof device. Epoxy painting.
Cable entry: 1/2-14 NPT-F std. - opt. (see point 4 overleaf).
Terminal block: screw-type terminals suitable also for cable lugs.
Insulating material PA (UL 94V-0).
Earthing screws: one inside, one outside.
Max section of earthing wires: 4 mm2.
Data plate: in stainless steel with indelible data by laser marking.
 ELECTRICAL CONTACTS: One or two microswitches SPDT with
fixed dead band; one microswitch SPDT with adjustable dead
band (see point 1.2).
The function DPDT is obtained by two micro SPDT with
simultaneous action to within 0,2% of span.
 SENSOR: depending on setting ranges:
- metal diaphragm
- piston (sensor H) for use with liquids
- piston and seal welded diaphragm (sensor G)
Wetted parts: various materials available (see point 1.1).
 RANGES: from vacuum to 600 bar (see point 2).
 SET POINT: adjustable throughout the range.
Two independent set points (n° 2 SPDT contacts) with a gap higher
than 5% of range.
Repeatability: better than 1% of span.
Internal set point calibration by means of adjustment screw with
anti-loosening device.
 MOUNTING:
- std. direct or wall, by means of holes on the plate in AISI 304
- (optional) 2" pipe with bracket in AISI304.
Permitted mounting positions are shown in page 2.
 PROCESS CONNECTION: (see point 3)
- Threaded connection (std. 1/4NPT-F); std. material AISI 316L.
- Flanged connection, without diaphragm seal (option

ADD FILES

Cella

PRESSURE MEASUREMENT