SLQ-HC60

Datasheet SLQ-HC60 Milliliter Flow Meter for Hydrocarbons      Maximum flows up to 80 ml/min Sensitive to lowest flows Straight flow path, no moving parts Fast response time: < 50 ms Optimized for hydrocarbons 1 Introduction SLQ-HC60 The SLQ-HC60 Liquid Flow Meter enables fast, non invasive measurements of liquid flow up to 80 ml/min. This product line is especially suited for process monitoring applications in automation technology which require high sensitivity in the milliliter range. It is suited for use with almost all hydrocarbons, as for example, alcohols, oils, gasoline, diesel, etc. and many other chemicals. Excellent chemical resistance is ensured: The flow path of the SLQHC60 Liquid Flow Meters is formed by a simple, straight glass capillary. This Swiss made, non invasive flow meter is based on Sensirion’s patented CMOSens® Technology (US Patent 6,813,944 B2). An internal fourth generation MEMS sensor chip combines a thermal high precision sensor element with amplification circuits and digital intelligence for linearization and temperature compensation on one single microchip – the product’s core element. 2 Sensing Performance In Table 1 the flow sensor’s performance for use with Isopropyl Alcohol (IPA) is given. For other hydrocarbons the values will be slightly different as the performance depends on the medium used. Due to the optimized output signal the repeatability is nearly constant over a wide flow range. The repeatability depends on the integration timea of the analog signal acquisition. Longer integration time leads to better repeatability of the flow measurement (see table 1). The temperature compensation is optimized for use with IPA and shows very good performance for most hydrocarbons and other media. Table 1: Model specific performance of SLQ-HC60 for IPA (all data at 20°C, 1 barabs unless otherwise noted) Parameter Maximum Flow Rate Repeatabilityb (whichever is greater) Flow Detection Response Time Accuracyc Response Time On Power-Up Mounting Orientation Sensitivityd Operating Temperature Ambient storage Temperature Condition SLQ-HC60 Best Performance Reduced Performance 80 100 1.5 0.2 1 0.07 < 50 10 120 0.25 +10…+40 +0 ... +55 -10…+60 0.2 sec integration time 2 sec integration time For IPA Temperature Compensated Functional (empty flow channel) Units ml/min % m.v. % F.S. % m.v. % F.S. ms % m.v. ms ml/min °C °C °C This refers to the time over which the analog acquisition device averages the input signal. Refer to the datasheet of your device. b For medium IPA using 1 σ standard deviation of consecutive flow measurements. c With IPA, 2.5-80 ml/min, after conversion of the Vout signal via the exponential relation. See section 3.1 d Normal position: Horizontal Flow channel, connector horizontally. a www.sensirion.com April 2012 V2 1/6 SLQ-HC60 Milliliter Flow Sensor 3 Output Signal and Media Compatibility 3.1 Output Signal 9 8 7 6 5 4 3 2 1 0 -120 -100 -80 -60 -40 -20 0 20 40 60 80 100 120 Flow [ml/min] (IPA) Figure 1: Sensor Signal for IPA For other media but IPA the form of the sensor signal will differ slightly as is demonstrated in figure 2. When using the sensor with other media but IPA, ask Sensirion for advice on how to handle the sensor signal to suit your requirements. Because of the drastically different sensor response the sensor is not suited for use with water or aqueous solutions. for Conversion: Signal to Flow (for positive flow rates)a Flow[ml/min] = (Exp[(Vout-5)/0.729]-1)/3 = 1/3 * (e(Vout-5)/0.729-1) 10 Ethanol IPA 9 Diesel Vout [Volt] 3.2 Signal for Other Media 3.3 Maximum Flow Rate Common Media 10 Vout [Volt] The SLQ-HC60 flow meter comes with an analog output (0…10V). Depending on the media used, the output will be about 5 Volt at zero flow. For positive flow rates the output signal increases logarithmicallya with the flow rate for IPA (see figure 1). This signal characteristic has the advantage that the flow meter can be used at various flow rates with a constant relative error and makes measurements for a wide spectrum of liquids possible. 8 7 Due to the measurement principle, the 6 thermal properties of the medium determine the sensor characteristics 5 and the dynamic range of the device. 0 20 40 60 80 100 For most hydrocarbons and most other Flow [ml/min] media this range extends to about 80 Figure 2: Sensor Signal for Various Media ml/min. With reduced performance even rates of 100 ml/min or higher can be reached for some media. For low viscosity (< 1 Table 2: Examples for common media centipoise) media the dynamic range can be limited Medium Maximum Flow Rate Units by turbulence. IPA 80 (100b) The dynamic ranges for various media are given in Table 2. For other media similar values can be Ethanol, Methanol, Gasoline ~50 expected. Acetone ~ 40 ml/min Attention: If unsure about your medium please contact Sensirion for assistance. Diesel, Petroleoum, Veg. Oils 80 (100b) Silicon Oil, Ether < 100 The flow rate for IPA is given by Flow[ml/min] = (Exp[(Vout-5)/0.729]-1)/3 for positive flow rates, i.e. above 5V. For negative flow rates the signal is symmetric: Flow[ml/min] = - (Exp[(5-Vout)/0.729]-1)/3. In Excel or when programming one can use the following formula for the full flow range: Flow[ml/min] = SIGN(Vout -5)*(EXP[SIGN(Vout -5)*( Vout -5)/ 0.729)]-1)/3 where SIGN is -1 if the argument is negative and +1 if the argument is positive. b At reduced requirements on accuracy (repeatability for other media but IPA) and exchangeability of sensors. www.sensirion.com April 2012 V2 2/6 a SLQ-HC60 Milliliter Flow Sensor 3.4 Exchangeability Every SLQ-HC60 is calibrated for IPA. This makes the sensors also exchangeable for use with other media, meaning that once the sensors are characterized for a particular medium the same values can be used for further sensors. Depending on the media, variations between sensors of 6– 20% are typical. 4 Cleaning Due to the measurement principle the sensor is sensitive to deposits on the inside of the sensor’s capillary. Especially when changing from one liquid to another sufficient cleaning steps have to be performed to avoid nonsoluble remainders on the capillary wall. Inadequate cleaning can lead to an offset and low repeatability. The cleaning procedure has to efficiently remove contaminations from the borosilicate glass surfaces. This is the material which is used for the straight flow channel inside the flow meter. Any form of mechanical cleaning has to be avoided. This will easily damage the internal capillary. 5 Electrical and Mechanical Specifications 5.1 Electrical Specifications Table 2: DC Characteristics. Parameter Conditions Power Supply DC, VDD Operating Current Min. Typ. Max. Units 16 24 26 V 3 4 mA 10  Tbd V k pF VDD = 24 V ---- , no load Analog Out Voltage Range Load at Analog Out Capacitive Load at Analog out 0 10 5.2 Electrical Connector and Pinout Connector Type: Lumberg Pico (M8) male, 8-pole, threaded lock. Pin 1 2 3 4 5 6 7 8 Function Connect to Power Supply 24V ( + ) of Power Supply Do not use.a Analog Out 0-10 V GND GND ( + ) of Signal Acquisition Connect to ground/(−) of Power Supply and Signal Acquisition Color (pigtail cable) white brown green yellow grey pink blue red Note: Pins 7 and 8 have to be connected to ground of the Power Supply and the Signal Acquisition. Pins 2-5 are used in the calibration procedure, they have no functionality in normal use. Pins 2-5 cannot be used “as” the ground; they are not connected with Pins 7 and 8 inside the sensor. 5.3 Fluidic Connections The repeatability of the measurement depends on a laminar flow of the liquid. Especially with low viscosity media improper connections to the sensor can unnecessarily reduce the maximum flow rate. Tubing with an inner diameter of less than 1.8 mm should be avoided. Make sure that the tubing has been cut properly. Or connect to common ground with Pin 7 and 8. Never connect to (+) of Power Supply! www.sensirion.com April 2012 V2 a 3/6 SLQ-HC60 Milliliter Flow Sensor 5.4 Mechanical Specifications and Pressure Rating Table 3: Mechanical Specifications and Pressure Rating Parameter SLQ-HC60 Fluid Connector Standard (Fittings) Wetted Materials:  Internal Sensor Capillary Material  Fitting Material  Additional Sealing Material ¼-28 flat bottom port for 1/8”, 3mm OD tubing Duran® (borosilicate glass 3.3) 100% PEEK™ (polyetheretherketone) Tefzel® (ETFE) 3 bar 45 psi Overpressure Resistance Maximum Pressure Drop (at 80 ml/min flow rate for IPA) Internal Sensor Capillary, Inner Diameter Protection Class Total Mass 40 mbar 1.8 mm IP 65 53 g Attention Mechanical shocks and connecting to the fittings with excessive force can lead to stress on the internal thin walled glass capillary and can cause it to break. Test for leakage after every time new connections are made. Refer to Handling Instructions for precise information. 6 Physical Dimensions 7 ! Ordering Info The SLQ-HC60 can be ordered in the Flow Meter Kit at quantities up to 3 units. The Flow Meter Kit contains the sensor, the suitable connecting cable, a set of compression fittings for 1/8’’ OD tubing and a set of various barb connectors for easy setup for testing. When ordering the SLQ-HC60 alone without the Flow Meter Kit it comes only with the cables but without fitting material. Product Flow Meter Kit SLQ-HC60 SLQ-HC60 www.sensirion.com April 2012 V2 Article Number 1-100870-01 1-100605-01 4/6 SLQ-HC60 Milliliter Flow Sensor 8 Important Notices 8.1 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. 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 data sheet and application notes. Failure to comply with these instructions could result in death or serious injury. If the Buyer shall purchase or use 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 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. 8.2 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. See application note “ESD, Latchup and EMC” for more information. 8.3 Warranty SENSIRION 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 SENSIRION’s published specifications of the product. Within such period, if proven to be defective, SENSIRION shall repair and/or replace this product, in SENSIRION’s 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 SENSIRION’s reasonable satisfaction, to have arisen from SENSIRION’s faulty design, material, or workmanship;  the defective product shall be returned to SENSIRION’s factory at the Buyer’s 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 recommended 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 LIMITATION, 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 data sheet 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 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 customer’s applications by www.sensirion.com customer’s 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© 2001-2007, SENSIRION. CMOSens® is a trademark of Sensirion All rights reserved. Trademarks where mentioned. E.g. PEEK™ is a trademark of Victrex PLC Tefzel® is a registered trademark of DuPont Corporation Duran® is a trademark of the SCHOTT-Group FCC and CE Statement This product has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules (FCC CFR 47). These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of more of the following measures:     Reorient or relocate the receiving antenna. Increase the separation between the equipment and the receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult a dealer or an experienced radio/TV technician for help. The devices fully comply with norm EN 50081-2 (Emission Test Series) as well as EN 50082-2 (Immunity Test Series). ESD protection up to 2kVolt. 8.4 RoHS and WEEE Statement The SLQ product family complies with requirements of the following directives:  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 2002/95/EC on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS), OJ 13.02.2003; esp. its Article 4. April 2012 V2 5/6 SLQ-HC60 Milliliter Flow Sensor Headquarter and Sales Office SENSIRION AG Laubisruetistr. 50 CH-8712 Staefa ZH Switzerland Phone: +41 44 306 40 00 Fax: +41 44 306 40 30 info@sensirion.com http://www.sensirion.com SENSIRION Korea Co. Ltd. #1414, Anyang Construction Tower B/D, 1112-1, Bisan-dong, Anyang-city, Gyeonggi-Province, South Korea Phone: +82-31-440-9925~27 Fax: +82-31-440-9927 info@sensirion.co.kr http://www.sensirion.co.kr SENSIRION Inc. Westlake Pl. Ctr. I, suite 204 2801 Townsgate Road Westlake Village, CA 91361 USA Phone: +1 805 409 4900 Fax: +1 805 435 0467 michael.karst@sensirion.com http://www.sensirion.com SENSIRION China Co. Ltd. Room 2411, Main Tower Jin Zhong Huan Business Building, Futian District, Shenzhen, PR China Postal Code 518048 Phone: +86 755 8252 1501 Fax: +86 755 8252 1580 info@sensirion.com.cn http://www.sensirion.com.cn SENSIRION Japan Sensirion Japan Co. Ltd. Shinagawa Station Bldg. 7F 4-23-5 Takanawa Minato-ku, Tokyo, Japan Phone: +81 3-3444-4940 Fax: +81 3-3444-4939 info@sensirion.co.jp http://www.sensirion.co.jp Find your local representative at: http://www.sensirion.com/reps www.sensirion.com April 2012 V2 6/6