LLE Series Liquid Level Sensors Features Benefits * Solid state technology * Small size * Digital output * Pre-wired * Electrically robust * Accurate repeatable switching point * Can be mounted in applications where space is limited * Microprocessor compatible * Easy to install saving assembly time * Reverse polarity, over voltage, short circuit and transient protection Description Typical applications The enhanced series of liquid level sensors incorporates a photo-transistor trigger which provides a digital output that denotes the presence or absence of liquid. * Home appliances * Spa baths * Vending machines * Food and beverage * Medical * Compressors * Machine tools * Automotive The mode of operation is derived from the principle of total internal reflection. An LED and photo-transistor are housed within a plastic dome at the head of the device. When no liquid is present, light from the LED is internally reflected from the dome to the phototransistor. When liquid covers the dome, the effective refractive index at the dome-liquid boundary changes, allowing some light from the LED to escape. Thus the amount of light received by the photo-transistor is reduced and the output switches, indicating the presence of liquid. This method of liquid level sensing is very fast, and almost instantaneous for water. ! ! WARNING PERSONAL INJURY DO NOT USE these products as safety or emergency stop devices, or in any other application where failure of the product could result in personal injury. Failure to comply with these instructions could result in death or serious injury. Sensing and Control WARNING MISUSE OF DOCUMENTATION * The information presented in this product sheet (or catalogue) is for reference only. DO NOT USE this document as product installation information. * Complete installation, operation and maintenance information is provided in the instructions supplied with each product. Failure to comply with these instructions could result in death or serious injury. LLE Series Liquid Level Sensors Technical information Specifications Operation mode Repeatability (mm) Hysteresis (mm) Response time User defined single point on/off switch (Output is high in air) 1 2 (dependent on liquid) Rising liquid level - 50 s Falling liquid level - 1 s max (in ethanol) Response in other liquids dependent on viscosity Mechanical Mounting Termination Material [Note 1] Dimensions Dome Thread Hex Type 1 and 2 - mounted from outside; Type 3 and 5 - mounted from inside 250 mm flying leads Blue 0V Red +5 V to +12 V supply Green Output Polysulphone Plastic Metal LLE101/102/103000 LLE205/305000 3,5 mm radius (includes LLE105000) M12x1 1/2 in BSPT 19 mm 24 mm (See mounting drawings on page 3) Environmental Operating temperature (C) Storage temperature (C) Thermal testing Humidity Vibration Mechanical shock Pressure range (bar) Ambient IR light limit (@ 940 nm) [Note 3] -25 to 80 -30 to 85 As per BS EN60068-2-33 As per BS EN60068-2-30 As per BS EN60068-2-6 Part S3: 1996 As per BS EN60068-2-27 Part 2 Ea: 1987 0 to 5 (plastic housing) [Note 2] 0 to 25 (metal housing) 10 mW/cm2 in operation Electrical Supply voltage (Vcc) Supply current (mA) Output sink current [Note 4] Notes: [Note 1] [Note 2] [Note 3] [Note 4] +5 Vdc to +12 Vdc 5 % 15 mA nominal @ +5 Vdc @ 25 C 10 mA max @ 80 C 3 mA max Material compatibility information available on request. Threaded sensors only. For other ambient light environments the user should test the sensor under application conditions to verify compatibility. The output is intended as a TTL compatible output signal, for interfacing to logic systems. For interfacing with other types of circuitry an appropriate buffer circuit must be used. Order guide Description Screw In, M12 Thread, Plastic Push In, Plastic Screw In, 1/2 in, Metal 2 Honeywell * Sensing and Control Catalogue Listing (Type 1) (Type 2) (Type 3) (Type 5) Nickel plated brass Stainless steel LLE101000 LLE102000 LLE103000 LLE105000 LLE205000 LLE305000 LLE Series Liquid Level Sensors Mounting drawing (in mm and inches) LLE101000 (Type 1) LLE102000 (Type 2) 22,49 (0.89) "L" 19,40 (0.76) 12,45 (0.49) M12 x 1 - 8 g M12 x 1 - 8 g 19,00 (0.75) 12,40 (0.49) 10,25 (0.40) 19,00 (0.75) 4,70 (0.19) 4,70 (0.19) (0.01 in 2 ) 0,22 mm 2 Tinned Ends 0,22 mm2 (0.01 in2) Tinned Ends Notes 1 Recommended panel hole size O 12,5 0.3 mm (0.49 0.01 in) 2 `O' ring seal supplied unassembled LLE105000 (Type 5) LLE103000 (Type 3) "L" +0.004 (0.39 -0 19,00 (0.75) 7,20 (0.28) 2,70 (0.11) O10,00 ) +0,10 -0 16,12 (0.63) 2,3 (0.09) 10,30 (0.41) 0,22 mm2 (0.01 in2) Tinned Ends 4,1 (0.16) M12 x 1 - 8 g 13,0 (0.51) LLE205000 LLE305000 Cable length Electrical diagram y ; Vcc RED 12,3 (0.49) 16,00 (0.63) 24,00 (0.94) VOLTAGE REGULATOR O 14,5 0.57 0,22 mm2 (0.01 in2) Tinned Ends (0.01 in 2 ) 0,22 mm 2 Tinned Ends Thread 1/2" BSP 16,5 (0.65) 45,4 (1.79) 24,00 (0.94) IRED OUTPUT GREEN SCHMITT TRIGGER PHOTO TRANSISTOR 0V BLUE Honeywell * Sensing and Control 3 Warranty/Remedy Sales and Service Honeywell warrants goods of its manufacture as being free of defective material and faulty workmanship. Contact your local sales office for warranty information. If warranted goods are returned to Honeywell during that period of coverage, Honeywell will repair or replace without charge those items it finds defective. The foregoing is Buyer's sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose. While we provide application assistance, personally, through our literature and the Honeywell web site, it is up to the customer to determine the suitability of the product in the application. Specifications may change at any time without notice. The information we supply is believed to be accurate and reliable as of this printing. However, we assume no responsibility for its use. Honeywell serves its customers through a worldwide network of sales offices and distributors. 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Phone: +(809) 792-7075 FAX: +(809) 792-0053 Venezuela Honeywell CA Phone: +(58-2) 238-0211 FAX: +(58-2) 238-3391 Sweden Honeywell AB Phone: +(46) 8 775 55 00 FAX: +(46) 8 775 56 00 This publication does not constitute a contract between Honeywell and its customers. The contents may be changed at any time without notice. It is the customer's responsibility to ensure safe installation and operation of the products. Detailed mounting drawings of all products illustrated are available on request. Copyright 2004 Honeywell International Inc. All Rights Reserved. Honeywell Sensing and Control www.honeywell.com/sensing Newhouse Industrial Estate Motherwell ML1 5SB Scotland, UK 100437-EN Issue 2 01/04 UK07 GLO Printed in the United Kingdom on environmentally friendly paper