27
Point level switch
Technical data
27
• Process seal:
Synthetic/organic fiber elastomer seal (asbestos-free)
NPT versions do not have a process seal and the thread must be sealed by the customer
onsite, e.g. using a Teflon tape.
• Shaft seal:
NBR
• Process connections:
G3/4": Stainless steel 303
Other versions: Stainless steel 303 version or PBT version
9.8.4
Cable entries
2 x cable gland, M20 x1.5
(optionally 1 x cable gland M20 x 1.5 and indicator lamp)
Permitted cable diameter
5 to 9 mm (0.2 to 0.35 in)
9.9
Operability
9.9.1
Local operation
Rotational movement display
The shaft's rotational movement is displayed by a reflector disk fitted on drive shaft of the
paddle and can be monitored through a sight opening in the drive/terminal cover. The disk's
viewing area is lit up by an LED to make it easier to see.
If rotation monitoring (optional) detects an error, the LED flashes.
Setting the switching threshold (sensitivity)
The switching threshold can be adapted to the weight of the bulk solids in 3 stages via an
operating element that is accessible from above (also possible during operation):
• Minimum: 80 g/l (4.99 lb/ft³)
• Depending on the density of the bulk solids adjustable in three stages: low, medium
(default), high
9.10
Certificates and approvals
9.10.1
CE mark
The measuring system meets the legal requirements of the EU Directives. The manufacturer
confirms that the device has been successfully tested by applying the CE mark.
9.10.2
Ex approval
Information about currently available Ex versions (ATEX, FM, CSA, etc.) can be supplied by
your supplier. All explosion protection data are given in a separate documentation which is
available upon request.