www.sensirion.com february 201 5 v2 1 /4 lg 01 - 2000axxx liquid flow switch and bubble detector ? detection of low liquid flow in the ml /min range ? totally non - invasive ? ultra - fast response time of 100 ms product summary the lg01 liquid flow switch enables detection of flow of liquid in the ran ge of ml/min. the output signal is 5v when the flow rate is higher than the specified f low s witch point and 0v below this limit or when air or bubbles are found inside the sensor s flow channel instead of liquid. excellent chemical resistance and bio - comp atibility are ensured: the flow path of the lg01 liquid flow switch is formed by a simple, straight glass capillary. for more information on communic ation, please refer to section 2 of this document. 1 sensing performance table 1 : model specific performance of lg01 (all data for medium h 2 o , 23c ) parameter lg01 - 2000a090 lg 01 - 2000a005 unit h 2 o flow switching point 4.5 0.25 m l/min h 2 o maximum flow rate 50 220 m l/min accuracy a of switching point 10 10 % of switching point switching hysteresis 5 5 % of swi tching point mounting o rientation s ensitivity b +2 +14 % of switching point flow detection r esponse t ime ? 63 5 0 ms response t ime on p ower - u p 120 ms operating t emperature +10+50 c ambient storage temperature c - 10+60 c ope rating p ressure 3 bar proo f p ressure 5 bar a better available on request b maximum shift of switching point if mounted vertically c non - condensing, flow path empty 1.1 operation with other liquids than water due to the measurement principle the lg01 flow switch characteristics is changin g with the thermal properties of the liquid. for aqueous solutions the data for h 2 o as stated above is a good approximation. for hydrocarbon liquids such as oil, fuel, or organic solvents , the flow s witch point shifts towards higher flow rates . for indicat ive purpose, d ata is provided for isopropyl alcohol (ipa) below . table 2 : approximate switch levels of the lg01 liquid flow switch with hydrocarbon liquids parameter lg01 - 2000a090 lg01 - 2000a005 unit approximate flow switching point with ipa 9 1.4 m l/min maximu m flow rate with ipa >250 >250 ml/min
www.sensirion.com february 201 5 v2 2 /4 2 communication with the sensor an electrical voltage output indicates flow above (5 v) or below (0 v) the flow s witch point and/or air or bubbles inside the sensors flow channel. the product comes fully calibrated f or water C for volume applications flow calibration for other media is available on request . 2.1 electrical specifications table 3 : dc characteristics parameter min. typ. max. units power s upply dc, vdd 5 7 12 a v operating c urrent, vdd = 9 v, no load 6.8 m a voltage output high 5 v voltage output low 0 v a use 9 v max. for best performance 2.2 electrical connector and sensor pinout connecto r type: 5 pin molex pcb header 53261 - 0590 mating connector : molex 51021 - 0500 . table 4: electrical p inout pin 1 do not connect 2 do not co nnect 3 vdd 4 gnd 5 voltage out put 3 fluidic connection table 5 : fluidic specifications and pressure rating parameter lg01 - 2000axxx wetted m aterials: ? internal s ensor t ube m aterial borosilicate glass 3.3 ? fitting m aterial peek ? sealing m aterial fep fluid connector p orts (fittings) ? - 28 flat - bottom for 1/16 or 1/8 od plastic tubing (min. 2mm id recommended) a pressure d rop (at maximum flow rate, h 2 o, 23c) 1 mbar total i nternal v olume 80 l a for fluid connection material use flat bottom ? - 2 8 standard components e.g. idex parts p - 200/p - 300. various adapters e.g. to barb connectors are available from company value plastics as well. for more information on the fluidic connection please find: application note sensor ports and tubing connection s in the download center on our webpage ( www.sensirion.com/liquidflow - download ) . 4 connectivity kit the optional lg01 connectivity kit contains material for electrical and fluidic connections ? asse mbled flat ribbon cable, 30cm (1 - 100482 - 01) ? 2x barb adapter to connect id 1.6 mm (1/16) tubing (value plastics abr004 - j1a - 2) ? 2x barb adapter to connect id 3.2 mm (1/8) tubing (value plastics abr013 - j1a - 1) 1 2 3 4 5
www.sensirion.com february 201 5 v2 3 /4 5 mechanical specifications table 6 : mechanical sp ecifications parameter lg01 - 2000 axxx largest dimensions 53 x 22 x 9 mm total m ass 6 g inner d iameter d 1.8 mm all dimensions in mm 6 ordering information for oem applications the sensor can be purchased in larger quantities without any additional parts. product article number l g01 - 2000a090 1 - 100796 - 01 lg01 - 2000a005 1 - 100 797 - 01 lg01 connectivity kit 1 - 100814 - 01 attention fragile mechanical shocks, forces induced by stiff fluid connection lines as well as connecting to the fittings without suita ble tools lead to stress on the internal thin - walled glass capillary and can cause it to break. ? while tightening the fittings, fix the fluidic ports position with a wrench. ? test for leakage after every time new connections are made. ! 531
www.sensirion.com february 201 5 v2 4 /4 important notic es warning, personal injury do not use this product as safety or emergency stop devices or in any other application where failure of the product could result in personal injury (including death). do not use this product for applications other than its int ended and authorized use. before installing, handling, using or servicing this product, please consult the datasheet and application notes. failure to comply with these instructions could result in death or serious injury. if the buyer shall purchase or us e sensirion products for any unintended or unauthorized application, buyer shall defend, indemnify and hold harmless sensirion and its officers, employees, subsidiaries, affiliates and distributors against all claims, costs, damages and expenses, and reaso nable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if sensirion shall be allegedly negligent with respect to the design or the manufacture of the produ ct. esd precautions the inherent design of this component causes it to be sensitive to electrostatic discharge (esd). to prevent esd - induced damage and/or degradation, take customary and statutory esd precautions when handling this product. warranty sensir ion warrants solely to the original purchaser of this product for a period of 12 months (one year) from the date of delivery that this product shall be of the quality, material and workmanship defined in sensirions published specifications of the product. within such period, if proven to be defective, sensirion shall repair and/or replace this product, in sensirions discretion, free of charge to the buyer, provided that: ? notice in writing describing the defects shall be given to sensirion within fourteen (14) days after their appearance; ? such defects shall be found, to sensirions reasonable satisfaction, to have arisen from sensirions faulty design, material, or workmanship; ? the defective product shall be returned to sensirions factory at the buyers expense; and ? the warranty period for any repaired or replaced product shall be limited to the unexpired portion of the original period. this warranty does not apply to any equipment which has not been installed and used within the specifications recommende d by sensirion for the intended and proper use of the equipment. except for the warranties expressly set forth herein, sensirion makes no warranties, either express or implied, with respect to the product. any and all warranties, including without limitati on, warranties of merchantability or fitness for a particular purpose, are expressly excluded and declined. sensirion is only liable for defects of this product arising under the conditions of operation provided for in the datasheet and proper use of the g oods. sensirion explicitly disclaims all warranties, express or implied, for any period during which the goods are operated or stored not in accordance with the technical specifications. sensirion does not assume any liability arising out of any applicatio n or use of any product or circuit and specifically disclaims any and all liability, including without limitation consequential or incidental damages. all operating parameters, including without limitation recommended parameters, must be validated for each customers applications by customers technical experts. recommended parameters can and do vary in different applications. sensirion reserves the right, without further notice, (i) to change the product specifications and/or the information in this docume nt and (ii) to improve reliability, functions and design of this product. copyright ? 2001 - 2015 , sensirion. cmosens ? is a trademark of sensirion all rights reserved reach, rohs and weee statement the l g01 flow switch compl ies with requirements of the foll owing directives: ? eu directive 1907/2006/ec concerning registration, evaluation, authorization and restriction of chemicals (reach) ? eu directive 2002/96/ec on waste electrical and electronic equipment (weee), oj13.02.2003; esp. its article 6 (1) with annex ii. ? eu directive 2002/65/ec on the restriction of certain hazardous substances in electric and electronic equipment (rohs), oj01.01.2011 headquarters and subsidiaries sensirion ag laubisruetistr. 50 ch - 8712 staefa zh switzerland phone: +41 44 306 40 00 fax: +41 44 306 40 30 info@sensirion.com www.sensirion.com sensirion inc., usa phone: +1 805 409 4900 info_us@sensirion.com www.sensirion.com sensirion japan co. ltd. phone: +81 3 3444 4940 info@sensirion.co.jp www.sensirion.co.jp sensirion korea co. lt d. phone: +82 31 345 0031 3 info@sensirion.co.kr www.sensirion.co.kr sensirion china co. ltd. phone: +86 755 8252 1501 info@ sensirion.com.cn www.sensirion.com .cn sensirion ag (germany) phone: +41 44 927 11 66 info@sensirion.com www.sensirion.com to find your local representative, please visit www.sensirion.com/contact
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