Industrial Range Level Switches

For general purpose

Industrial Range Level Switches

Type A 22C 04

For alarm, limit and control functions

Nominal pressurePN 40 according to EN/DIN
Operating temperature0 to 330°C
Ambient temperature0 to 70°C
Density of the liquidmin. 0.7 kg/dm³
Operating differential12 mm, fixed
Wetside materialstainless steel (CrNiMo)
Slip-on flangeCarbon steel P265GH zinc galvanized, passivated
Housing materialseawater resistant die cast aluminium
FlangeDN 65, PN 40 according to EN 1092-1 (DIN 2501)
Flange facingraised face, form B1 (Form C - DIN 2526)
Switch elementMicroswitch SPDT with silver contacts
Switch rating250 VAC, 5 A / 30 VDC, 5 A
EnclosureIP65
Weight5.4 kg
Overall length (tank)226 mm
Safety Integrity Level (SIL)SIL 1 (Type AA 22C 04: SIL 2)

Frequently used on off-shore rigs, in steam boilers and plants, power stations, chemical and petrochemical engineering, heating and refrigeration, i.e. airconditioning technology.

Flanges acc. to EN 1092-1 (DIN 2501)DN 65 to DN 150
PN 16 to PN 320
Flanges acc. to ANSI B16.5DN 3" to DN 6"
PN cl. 150 to PN cl. 2500
Flanges acc. to BS 10DN 3" to DN 6"
PN Table E to PN Table T
Flanges acc. to JIS B 2220DN 65 to DN 125
PN 5K to PN 63K
Type A 22CF 04
> Fixed flange
As type A 22C 04, but sealing unit and slip-on flange are made from a single part. Material: stainless steel (CrNiMo)

Flange modules for the Industrial Range according to EN/DIN, ANSI, BS, JIS
For economic reasons, the flange modules of the Industrial Range are manufactured in two different executions. The fixed flange for the most demanding requirements in respect of temperature range and corrosion resistance and the composite flange for best economy.

Fixed flange
Temperature range-196 to +400°C
Material1.4571
Option1.4435 (316L)
Hastelloy C
Composite flange
Temperature range-10 to +400°C (EN/DIN)
-29 to +400°C (ANSI)
Slip-on FlangeCarbon steel: P265GH zinc galvaniced and passivated
Options13 CrMo 44 (high temp. steel)
A 350-LF2 (low temp. steel)
Sealing unit1.4571
Options1.4435 (316L)
Hastelloy C

Marine approvals and registrations of Trimod'Besta limit switches


Electric and pneumatic level switches are available to the marine industry, in light, heavy duty and explosion proof versions.


Safety Integrity Level (SIL)


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