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KARI

OLC-2

OPTICAL LEVEL CONTROLLER

 

  • For potentially explosive environments (ATEX II 1 GD)

  • NO need for Exi-isolator unit

  • Very small probe ø23 mm - fits through 3/4" adaptor

  • THREE level indication

  • Two separately programmable output relays

                PATENTED FINNISH QUALITY PRODUCT 

 

                   

                      

OLC-2 is a device for liquid level observing and controlling. There is two potential free output relays which are separately programmable. The control relay has two separate contacts, one closing and the other one opening, both 8A 250 V AC. The alarm relay has one change over contact, 6A 250V AC. Both relays are easily programmable to many different function modes. OLC-2 has self diagnostics which gives an alarm if the probe or light cable breaks down.
                                 

OLC-2 senses the intensity of light coming back from the OLP probe and determines the liquid level accordingly. The amount of light returning from the OLP depends on the tilting angle of the OLP probe. The probe senses three different liquid levels, which are set by the length of the light cable and the position of the cable weight.  

                               

The probe is made of polypropylene (PP) and the light cable is polyethylene (PE) isolated, so they are very strong against different chemicals. The OLP probe is delivered in three light cable lengths: 3m, 5m or 10m (the light cable must not be shortened).  

                                     
OLC-2 does not require an Exi isolator unit, because there is no electrical connection between the probe and the control box. Thus OLC-2 is very suitable for observing and controlling the level of flammable liquids.  

                       EXAMPLES OF USE

               TEKNISET TIEDOT

ATEX class <Ex> II (1) GD
[Ex op is] IIC (Ga/Da)

Supply voltage

 230 V AC, 50 Hz, 1.2 VA CASING Polycarbonate, transparent cover
Two relays potential free contacts Measures 132 x 77 x 93 mm
Relay 1 Two separate contacts, one Tightness IP 44
opening, the other one closing
Max. current/power 8 A 250 V AC 2000 VA PROBE (OLP) polypropylene, ø 23 mm, length 215 mm
8 A 30 V DC 240 W Light cable polyethylene, length 3, 5 or 10 m
Min. current 100 mA 5 V DC Light cable feed-through nitrile rubber
Relay 2 one change over contact Probe ATEX <Ex> II 1 GD
Max. kytkentäteho 6 A 250 V AC 1500 VA Ex op is IIC T6 T80 °C Ga/Da
Min. kytkentäteho 100 mA 5 V DC (available 
1 mA 1 V DC)
Operating temp. -15 °C... +60 °C

 

Last updated 15.6.2011