www.sensirion.com version 1 C february 2015 1 / 5 sls - 1500 liquid flow meter compact flow meter for industrial applications ? liquid flow rates up to 40 ml/min ? 20 ms response time ? high chemical compatibility ? modular electrical interface product summary interface options the sls - 1500 liquid flow meter enables precise, non - invasive mea surements of dynamic liquid flow rates up to 40 ml/min bi - directionally . excellent biocompatibility is ensured by the exclusive use of high - performance stainless steel, ptfe and peek for the wetted parts. the flow path of the sls - 1500 l iquid f low s ensor is formed by an especially thin - walled, straight tube which assures excellent sensitivity. digital - i2c - bus - rs485 - bus - usb cable analog - voltage output (0 - 10 v) - additional operation modes for more information on communicat ion, please refer to page 2 of this document. 1 sensing performance (preliminary, subject to change) table 1 : p erformance of s l s - 15 00 (all data for medium h 2 o, 23 c, 1 bar abs unless otherwise noted) parameter sls - 1500 unit full s cale f low r ate 40 m l/min sensor o utput l imit a 65 ml/min accuracy below full scale (whichever error is larger) 10 % of measured value 0.25 % of full scale repeatability error from zero to full scale (whichever error is larger) 1 % of measured value 0.025 % of full scale temperatur e c oefficient ( additional error per c ; whichever is larger ) 0.25 % measured value / c 0.00625 % full scale / c flow d etection r esponse t ime ? 63 20 ms response t ime o n p ower - u p 25 ms operating t emperature + 5 + 50 c ambient storage temperature b - 10 +60 c operating p ressure 12 (175 ) bar (psi) proof pressure 2 5 ( 36 0 ) bar (psi) a flow rate at which the sensor output saturates , s ee section 2 for performance spe cification between full scale and saturation point b non - condensing, flow path empty
www.sensirion.com version 1 C february 2015 2 / 5 2 s pecification s charts figure 1: sensor accuracy and repeatability ( % of measured value ) across the sensors flow range figure 2 : sensor accuracy and repeatability (ml/min) across the sensors flow range 3 communication with the liquid flow meter the sls - 1500 flow m eter shows bi directional, linear transfer characteristics. the product comes fully calibrated for water. digital sampling time at 16 bit resolution: 74 ms digital sampling time at 9 bit resolution: 1 ms 3.1 electrical specifications this section d escribes electrical specifications when connecting directly to the sensors m8 connector for i 2 c communication. the preferred mode of communication is via the scc1 interface cables. s ee the respective scc1 datasheets for further details . table 2 : dc characteris tics parameter conditions min. typ. max. unit power supply dc, vdd 4.0 5.0 6 .0 v operating current vdd = 4.0 - 5.5 v 5.1 ma 3.2 electrical connector and pinout the flow meter is equipped with a male connector type m8, 4 - pin, threaded lock according to iec 61076 - 2 - 101 (ed. 1)/ iec 60947 - 5 - 2, and is compatible with sensirions scc1 interface cables. table 3: electrical pinout pin 1 sda (data) 2 gnd 3 vdd 4 scl (clock) 3.3 digital communication via rs485 - bus the scc1 - rs485 sensor cable for liquid flow meters provides communication via rs485 interface for use in a demanding industrial automation environment. in addition to the standard commands available in the i2c interface of the flow meter, the incorporated microcontroller of the cable provides m ore complex logic such as a dispense volume totalizer, automatic dispense detection, automatic heater control and data buffer for asynchronous readout. for further information please see the scc1 - rs485 sensor cable datasheet , available on www.sensirion.com/liquidflow - download . 3.4 analog communication the scc1 - analog sensor cable allows simple and quick readout of sensirions liquid flow meters by converting the digital flow meter reading to a 0...10 v analog voltage output. additionally, a digital (high/low) output with two different modes of operation is available (flow switch / volume counter) . for further information please see the scc1 - analog sensor cable datasheet , available on www.sensirion.com/liquidflow - download . 3.5 communication via usb cable the sensirion scc1 - us b sensor cable provides an easy - to - use usb interface for laboratory and desktop use. for further information please see the s cc1 - usb sensor cable datasheet , available on www.sensirion.com/liquidflow - download .
www.sensirion.com version 1 C february 2015 3 / 5 3.6 digital communication via i2c - bus the sls - 1500 liquid flow meter has been designed for use with the scc1 interf ace cables. for special applications, direct communication with the flow meter via the standard i2c - interface is possible. the physical interface consists of two bus lines, a data line (sda) and a clock line (scl) which need to be connected via pull - up res istors to the bus voltage of the system. these lines may be used on 3.3 v or 5.0 v level s with a recommended clock frequency of 100 khz . for the detailed specifications of this i2c communication, please refer to specific i2c a pplication notes from sensiri on. 4 fluidic connection table 3 : fluidic specifications and pressure rating parameter s ls - 15 00 wetted m aterials: ? internal s ensor t ube m aterial 904l high - performance stainless steel ? fitting m aterial peek ? sealing m aterial ptfe fluid c onnector p orts ( f ittings) 1/4 - 28 flat bottom 1/8 od tubing (recommended: min 2mm id) pressure d rop (at 40 ml/min, h 2 o, 23c) 2.15 mbar total i nternal v olume ~70 ? l for more information on the f luidic connection please find: application note sensor ports and tubing connectio ns in the download center on our homepage. 5 mechanical specifications table 4 : mechanical specifications parameter sls - 15 00 largest dimensions 59 x 31.5 x 18 mm total m ass ~ 40 g inner d iameter s ensor t ube 1.5 mm protection class ip 54 all dimensions in mm 2 x 1/4 - 28 flat bottom 2 x m2.5 thread for mounting 904l high - performance stainless steel peek
www.sensirion.com version 1 C february 2015 4 / 5 6 ordering information for oem applications, the flow meter can be purchased in larger quantities without any additional parts. for optimum performance, sensirion recommends using the sl s - 1500 f low meter in combination with the scc1 i nterface cables. for laboratory use and technology evaluation, the flow meter kit sls - 1500 can be ordered. this laboratory - package contains: ? liquid flow meter sls - 1500 ? pc software (viewer & data export tool); ? scc1 - usb sensor cable with usb connector for plug - and - play connection to a pc ? scc1 - analog sensor cable with 0 - 10 v voltage output. ? fluidic connection material for 1/4 - 28 flat bottom ports. product article no s ls - 1500 40 ml/min 1 - 101216 - 01 flow meter kit sls - 1500 1 - 101154 - 01 interface cables: scc1 - rs485 sensor cable pigtail 2m 1 - 100804 - 01 scc1 - rs485 sensor cable pigtail 5m 1 - 101122 - 01 scc1 - analog sensor cable pigtail 2m 1 - 101072 - 01 scc1 - analog sensor cable pigtail 10m 1 - 101219 - 01 scc1 - usb sensor cable 2m 1 - 101007 - 01
www.sensirion.com version 1 C february 2015 5 / 5 important notices wa rning, 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 intended 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 use sens irion 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 reasonable 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 product. es d 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 sensirion wa rrants 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. withi n 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) d ays 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 expens e; 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 recommended by s ensirion 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 limitation, wa rranties 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 goods. 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 application or u se 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 custo mers 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 document and (ii) to improve reliability, functions and design of this product. copyright ? 2001 - 201 5 , sensirion. cmosens ? is a trademark of sensirion all rights reserved ce, rohs, reach and weee statement the sls - 1500 complies with requirements of the following direc tives and regulations: ? the device fully complies with norm en 50081 - 2 (emission test series), en 50082 - 2 (immunity test series) and esd protection when used in combination with the scc1 - rs485 or scc1 - analog sensor cables. ? eu directive 1907/2006/ec concer ning 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. ltd. 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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