This range of switches features a robust high quality housing with 1 or 2 sealed SPDT microswitches and has been designed for use in environments where explosive gases can be present (e.g. gas fields, oil rigs & chemical plants etc).
One of the benefits of the Perseus range is the separation of the flameproof and adjustment chambers allowing adjustment of the set point with power on and the switch in operation. The housing is available with one or two electrical entries. Switching is effected in this unit through transforming, by means of a eccentric cam at fulcrum, the vertical motion of the flow with level change to the considerably reduced movement of a horizontal switch plunger which is arranged to operate a one or two SPDT/SPCO microswitches. This type of level switch can be used on tanks under pressure or vacuum, being suitable for pressures up to 3.5 Bar (only with spherical float) and liquid temperatures up to 100°C. It is suitable for low temperature operation but will not operate if the liquid is frozen. The device can be mounted through a 27mm hole drilled in the side of the tank with joint washer and back nut provided. (access inside the tank will be required to attach the float. Alternatively it can be provided with a flange and cylindrical float which will allow for the insertion of the switch complete with float.
Switching is achieved by means of an eccentric cam which translates the vertical movement of the float assembly to a horizontal plunger to operate a SPCO/SPDT microswitch. The wetted parts are manufactured from 316 stainless steel, with the horizontal plunger ‘O’ Ring seal manufactured from nitrile. The SPCO/SPDT microswitches are housed in a 316 ANC4B stainless steel or black anodised aluminium housing sealed to IP66 standards. Designed to give indication of high or low level alarm, second microswitch can be fitted to supply an additional signal.
Perseus Range - OEM suitable Intrinsically Safe Level Switches
- ATEX & IECEx CEII1G Exia IIC T6 Ta = -50 to +78°C & T5 Ta = -50 to +93°C & T4 Ta = -50 to +128°C
- Single or dual microswitch option
- Calibrated adjustment scale
- Black anodised aluminium switchcase to IP66 & IP67 standards
- Proven and documented SIL 2 IEC 61508 suitability.
Argus Range - OEM Suitability Intrinsically Safe Level Switches
- Certification ATEX & IECEx CE Ex II1G EExia IIC
- T6 Ta -50 to +78°C, T5 Ta -50 to +93°C, T4 Ta -50 to +128°C
- Single set point
- PPS (engineering polymer) or stainless steel case to IP66 & IP67
- DIN 43650 connector or integral terminal block via M20 entry
LI510 - Horizontal Mounting
LI520 - Vertical Mounting
LI520S - Vertical Mounting - Reed Contacts
Industrial Technical Services from Mississauga, Ontario is a single source Instrumentation and Automation company. We provide certified calibrations, PLC programming, custom controls and Panels.