LG01-2000A005 0.25 ML/MIN - SENSIRION

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LG01-2000Axxx

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 range of ml/min. The output signal

is 5V when the flow rate is higher than the specified

flow switch 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-compatibility

are ensured: The flow path of the LG01 Liquid Flow

Switch is formed by a simple, straight glass capillary.

For more information on communication, please refer

to section 2 of this document.

1 Sensing Performance

Table 1: Model specific performance of LG01 (all data for medium H2O, 23°C)

Parameter

LG01-2000A090

LG01-2000A005

Unit

H2O flow switching point

4.5

0.25

ml/min

H2O maximum flow rate

220

ml/min

Accuracya of switching point

±10

% of switching point

Switching hysteresis

±5

% of switching point

Mounting orientation sensitivityb

+14

% of switching point

Flow detection response time 63

Response time on power-up

120

Operating temperature

+10…+50

°C

Ambient storage temperaturec

-10…+60

°C

Operating pressure

bar

Proof pressure

bar

aBetter available on request

bMaximum shift of switching point if mounted vertically

cNon-condensing, flow path empty

1.1 Operation with Other Liquids than Water

Due to the measurement principle the LG01 flow switch characteristics is changing with the thermal properties of the

liquid. For aqueous solutions the data for H2O as stated above is a good approximation.

For hydrocarbon liquids such as oil, fuel, or organic solvents, the flow switch point shifts towards higher flow rates.

For indicative purpose, data 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

1.4

ml/min

Maximum flow rate with IPA

>250

ml/min

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2 Communication with the Sensor

An electrical voltage output indicates flow above (5 V)

or below (0 V) the flow switch point and/or air or

bubbles inside the sensors flow channel. The product

comes fully calibrated for water – 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 supply DC, VDD

12a

Operating current,

VDD = 9 V, no load

6.8

Voltage output high

Voltage output low

aUse 9 V max. for best performance

2.2 Electrical Connector and Sensor Pinout

Connector Type: 5 pin Molex PCB Header

53261-0590 Mating connector: Molex 51021-0500.

Table 4: Electrical Pinout

Do not connect

VDD

GND

Voltage output

3 Fluidic Connection

Table 5: Fluidic Specifications and Pressure Rating

Parameter

LG01-2000Axxx

Wetted materials:

 Internal sensor tube material

Borosilicate Glass 3.3

 Fitting material

PEEK

 Sealing material

FEP

Fluid connector ports (Fittings)

¼-28 flat-bottom for 1/16” or 1/8” OD plastic tubing

(min. 2mm ID recommended)a

Pressure drop (at maximum flow rate, H2O, 23°C)

1 mbar

Total internal volume

80 µl

a For fluid connection material use flat bottom ¼-28 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 Connections” 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

 Assembled 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)

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5 Mechanical Specifications

Table 6: Mechanical Specifications

Parameter

LG01-2000Axxx

Largest dimensions

53 x 22 x 9 mm

Total mass

6 g

Inner diameter 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

LG01-2000A090

1-100796-01

LG01-2000A005

1-100797-01

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 suitable

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.

53±1

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Important Notices

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 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 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.

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

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 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 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 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.

CMOSens® is a trademark of Sensirion

REACH, RoHS and WEEE Statement

The LG01 flow switch complies with requirements of the following

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. 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