OLT Series Trogamid optical liquid level switches FEATURES · Solid state technology, no moving parts · Miniature size, easy to install · Basic, TTL compatibleor transistor output versions · 10, 250 or 500 mA output current · Trogamid housings · High media compatibility · Fast response, electrically robust WETTED MATERIALS Tip and housing: Trogamid ELECTRICAL CONNECTION SPECIFICATIONS Maximum ratings Supply voltage OLT01... OLT25X... OLT25U... OLT50... Supply current OLT01..., OLT25... OLT50... Output current OLT01...* OLT25... OLT50... Operating temperature range OLT01..., OLT50... OLT25... 5...12 V 5...16 V 10...28 V 10...40 V Red +VS Green Output 15 mA 25 mA Blue GND 10 mA 250 mA 500 mA -25 to 80°C -40 to 125°C Pressure range OLT...F all others 20 bar 7 bar Protection class IP 67 Note: For basic sensor versions (OLT01B...) suitable resistors have to be selected. See details on page 3. * 10 mA sink current, source current depends on VS and RL January 2009 / 656 1/4 www.sensortechnics.com OLT Series Trogamid optical liquid level switches PERFORMANCE CHARACTERISTICS Characteristics Min. Typ. Max. Repeatability ±1 Hysteresis (depending on liquid) 1 Response time rising liquid Unit mm 50 µs 1 s Response time falling liquid (ethanol) OUTLINE DRAWING M10 thread (Housing type OLT...F...) 4 18.70 16.70 Ø 12 M10 x 1.0 mass: 5 g M12 thread short (Housing type OLT...K...) Ø 10 +0.10 19.40 14.70 6.95 4 19 mass: 6 g dimensions in mm Ø 10.40 dimensions in mm M12 x 1.0 M12 thread long (Housing type OLT...L...) 29.70 14.70 6.95 4 19 mass: 10 g Ø 10.40 dimensions in mm M12 x 1.0 Note: All OLT... devices are supplied with lead wires. The wire lengths are 200 mm -0, +30 mm measured from the back of the housing. January 2009 / 656 2/4 www.sensortechnics.com OLT Series Trogamid optical liquid level switches ELECTRICAL CONNECTION (cont.) Basic Red R LED Blue +VS GND Green RP Output Note: Customer has to select suitable resistors for chosen supply voltage. Pull-up resistor RP could be e.g. 10 kΩ depending on desired output. Forward voltage of LED is 1.3 V and LED current should be 10 mA (depending on application liquid). RLED can be calculated as follows (e.g. for VS=12 V): RLED = ( VS − 1.3) V 12 − 1.3 = = 1070 Ω ≈ 1.1 kΩ 10 mA 0.01 TTL compatible (high in air) Red TTL compatible (low in air) +VS Red 4.7 Green Output Blue +VS Green Output GND Blue GND Push-Pull (current sinking and sourcing) Red +VS Green Output Blue January 2009 / 656 GND RL RL 3/4 www.sensortechnics.com OLT Series Trogamid optical liquid level switches ORDERING INFORMATION Basic and TTL compatible output types Output Series Housing type Current Options OLT Type 01B : 10 mA basic* 0: Low i n ai r 01T: 10 mA TTL compatible 1: High in air F: M10 thread 3: 3 wire K: M12 thread short 4: 4 wire* * Low in air only Example: OLT 01T Termination Function * on request, MOQ may apply 0 F 3 Transistor output types Output Series Housing type Current Options OLT 25X : Type 250 mA Push-Pull Termination Function 0: Low i n ai r L: M12 thread long 3: 3 wire (VS= 5...16 V) 25U : 250 mA Push-Pull 1: High in air 4: 4 wire* (VS= 10...28 V) 50U : 500 mA Push-Pull * on request, MOQ may apply Example: OLT 50U 0 L 3 Accessories (please order separately): · Nuts, available in Plastic, Nickel Plated Brass or Stainless Steel · Washers, available in VAMAC (for high temperature) and Nitrile (for standard temperature) Note: Custom specific options are widely available! Please contact your nearest Sensortechnics sales office for further information. Sensortechnics reserves the right to make changes to any products herein. Sensortechnics does not assume any liability arising out of the application or use of any product or circuit described herein, neither does it convey any license under its patent rights nor the rights of others. January 2009 / 656 4/4 www.sensortechnics.com