Magnetrol 75 Series Instruction Manual

INSTRUCTION MANUAL AND REPLACEMENT PARTS
DESCRIPTION
Magnetrol's Series 75 level switches are float operated
units suitable for use on clean liquid applications for level
alarm, pump control and safety shutdown functions.
OPERATING PRINCIPLE
A permanent magnet is attached to a pivoted switch
actuator . As the float/ displacer
uid level, it raises the attraction sleeve
magnet, which then snaps against the non-magnetic
enclosing tube , actuating the switch. The enclosing tube
provides a static pressure boundary between the switch
mechanism and the process. On a falling level, an inconel
spring retracts the magnet, deactivating the switch.
pivot
return spring
Rising level
UNPACKING
Unpack the instrument carefully. Inspect all units for dam-
age. Report any concealed damage to carrier within 24
hours. Check the contents of the packing slip and purchase
order. Check and record the serial number for future refer-
ence when ordering parts.
®
rises following the liq-
into the field of the
Falling level
SERIES 75
Liquid Level Switches
AGENCY APPROVALS
Agency Approval
CENELEC EEx d IIC T6, explosion proof
EEx ia IIC T6, intrinsically safe
BASEEFA Ex d IIC T6
CSA Non-Hazardous CSA Type 4X
Class I, Div. 2, Groups B, C & D
Class I, Div. 1, Groups C & D
Class II, Div. 1, Groups E, F & G
Class I, Div. 1, Groups B, C & D
Class II, Div. 1, Groups E, F & G
FM Non-Hazardous NEMA 4X
Class I, Div. 1, Groups C & D
Class II, Div. 1, Groups E, F & G
Class I, Div. 1, Groups B, C & D,
Class II, Div. 1, Groups E, F & G
SAA Ex d IIC T6 (IP65)
Not available with all switches; Consult factory for proper
model numbers.
Consult factory for proper model numbers.