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Home > Applications > Liquids Level Measurement > Aggressive liquids > AT 120 HR HY
ATMI

2, avenue des Bosquets
Z.A. de l'Observatoire
78180 Montigny le Bretonneux
FRANCE

  :  +33(0)1 6137 3560
  :  +33(0)1 6137 3569
  :   sales@atmi.fr
AT 120 HR HY double warerproof float switch

Description

The AT 120 HR HY is a heavy duty float level switch designed for aggressive liquids. This float is encased in a HR HY (High Resistance) press-vulcanised housing, which ensures a double waterproof. The AT 120 HR HY can be connected directly to pumps up to 1.5 HP or through a relay if working with high power pumps. Its wide switching angle of 120º protects the pump's engine and the electrical panels from jerking, specially when dealing with very agitated liquids.

Advantages

  • 120º switching angle that protects the pump's engine from jerking
  • Double waterproof thanks to its HR HY (High Resistance) housing
  • No maintenance needed, thanks to its biconical shape that avoids any clogging
  • Easy to install, easy to use
  • Ecological float switch (no mercury, no lead)

Applications

 

  • Aggressive liquids : acids, solvents, corrosive liquids, hydrocarbons, sea water, etc...
  • Emptying / Filling function
  • Overflow or dry-running protection
  • High / low level alarm

TECHNICAL DOCUMENTATION DOWNLOAD :

 AT 120 HR HY technical data sheet (PDF 435Ko)
 AT 120 HR HY wiring diagram (PDF 1411Ko)

TECHNICAL CHARACTERISTICS

Operation mode Omnidirectionnal
Allowed fluid density 0,80 à 1,10
Maximum pressure 4.0 bars
Allowed temperature 90°C
Protection index IP 68
Power supply  250 VAC/VDC - 50/60 Hz
Cut-out power 20 (8) A (20 A résistive – 8 A inductive)
Housing material

Copolymer polypropylene + HR HY vulcanized

Cable 3 cond. 1 mm² HR HY
Weight without cable 295 g
Cable weight HR HY 110g/m
Ballast Loaded resin 250 g
Standard cable lenght (serie) 3, 5, 10,15 et 20 m
Remarks
  • It is highly recommended to use external ballasts and cable hangers with our float level switches.
  • For pump control of several levels with several pumps in aggressive liquid applications, choose our SOBA HR HY float level switch.
  • If your installation is located in a hazardous area, choose our ATEX certified float switch SOBA EX.

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