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High Accuracy Mass Flow Meters, High Quality Gas Flow Meter from MEMS Siargo's

Categories Flow meter
Brand Name: SHELOK
Model Number: MF4001
Certification: CE RoHS
Place of Origin: China
MOQ: 1pc
Price: $239/pc
Payment Terms: L/C, T/T, Western Union, MoneyGram
Supply Ability: 500pcs/week
Delivery Time: Within 10 Working Days After Deposit
Packaging Details: Standard Export Color Carton
Product Name: RS485 Output Mass Digital Air, Gas Flow Sensor
Accuracy: 1.5%
Range: 0-10, 0-25L/Min, 0-200L/min
Repeatability: ±0.075%
Display: LCD
Power supply: Battery or 5-12VDC adapter
Screw Thread: R1/4,BSPT1/4, 4mm,6mm,8mm,12mmquick coupling
Warranty: 12 Months
Keyboard: 3 keys
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High Accuracy Mass Flow Meters, High Quality Gas Flow Meter from MEMS Siargo's

RS485 Output Mass Digital Air, Gas Flow Sensor

Description RS485 Output Mass Digital Air, Gas Flow Sensor

The MF4001 mass flow sensors are manufactured using Shelok proprietary MEMS flow sensor and package technology. The sensor are specially designed for low flow rate range applications from 0~30 sccm up to 0~1000 sccm. The maximum flow rate for each model is manufactured via specially designed package as well as smart electonics so that the optimal sensitivity would be achieved.

The packaging enclosure is made of the chmically inert and thermally stable polycarbonate material. The maximum over pressure rating is 5 bar (73 psi) that is benefitted from Shelok unique MEMS Sensor chip structure, special packaging technology and the rugged sensor housing.

Detailed Images RS485 Output Mass Digital Air, Gas Flow Sensor


Specification RS485 Output Mass Digital Air, Gas Flow Sensor

MF4001 RS485 Output Mass Digital Air, Gas Flow Sensor
Flow Range0~30, 100, 200, 500, 1000, or customer specifiedsccm
Turn-down Ratio>100:1
Accuracy1±(1.5+0.5 FS)%
Repeat ability±0.25% Reading
Null Shift±30mV
Output Shift±0.2%/℃
Response Time265 (Default, 4, 8, 16, 33, 131 selectablems
OutputLinear: I2C, Analog 0.5~4.5V DC
Pressure Drop3<350Pa
Pressure Range-0.08 ~ +0.5MPa
Power Supply48~24 V DC, 20mA
Power Consumption<120mW
Working Temperature-10 ~ +55
Pins Out5 Pin, 2.54mm centers, 0.635 mm square
Calibration5Air @ 20℃, 101.325 kPa
Packaging MaterialPolycarbonate
Storage Temperature-20 ~ +65
Humidity<95 % RH (No icing or condensation


1. Denotes ±(1.5% Reading+0.5% Full Scale). To obtain accurate flow measurement, let the sensor warm up 1 minute at power up.

2. The response time is determined by ADC Sampling rate and data process algorithm. The default response time is 65 ms. It can be programmed via RS232 communication.

3. The maximum pressure drop is measured at flow rate 1000 sccm. For 500 sccm flow sensors, the pressure drop will be smaller. For 30, 100 and 200 sccm flow sensors, the flow pipe will be smaller, and the maximum pressure drop is <20 Pa at flow rate 200 sccm.

4. One DC power supply is necessary. The required minimum output current is 50mA. The sensor actually consumes less than that in operation.

5. Calibrations at other gases available upon request.

Mechanical Dimensions of the MF4001

Sensor Selection RS485 Output Mass Digital Air, Gas Flow Sensor

Features RS485 Output Mass Digital Air, Gas Flow Sensor

! Low mass flow range from 0~30 sccm up to 0~1000sccm

! Outstanding Accuracy of ±1.5%

! Fast response (4 ms selectable)

! R Pressure rating up to 5 bar (73 psi)

! Analog and / or digital user interface

! Easy installation

Applications 4-20ma Output Mass Digital Air, Gas Flow Meter

The MF4001 can be used in a wide range of applications inculding instrumentation(e.g. GC mass spectrometry), leak detection, process control, gas flow metrology as well as medical applications. The MF4001 requires a power supply of 8~24V DC and provides an analog and/or digital user interface. The analog output is linearized from 0.5 to 4.5V DC corresponding with flow rate from 0 to full scale. The digital output is via RS232/12C. The communication protocol of the RS232 and I2C can be found in this manual.

The calibration is generally performed with nitrogen at 20℃ and 101.325kPa pressure rating. It can nonetheless be calibrated with other gases and conditions upon requests.

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Q:How long will you reply me?

A:We will contact you as soon as possible but within 12 hours

Q: Can I get some samples?

A: Yes, Sample order is available for quality check and market test. But you have to pay the express cost.

Q: How soon can you arrange your production?

A: Once getting your product confirmation and receiving the prepayment, the production will be started immediately.

Q: What's delivery time?

A: It usually takes about 3-5 working days for small order and 10-15 days for big order.

Q:How do you control your quality ?

A: Three inspection steps(of original, production, and finished goods) + good warranty service(1 year free to change a new one without any human damage factors).

Q: What certificates do you have ?

A:ISO9000, CE, Explosion-proof certification, RoHs ready. And before the delievry of goods, quality and safety inspection certification issued by third parts also can be offered.

Q:Could I visit your factory?

A:Very welcome! Fly to Xian Yang air port. It was a big pleasure for us.

Q: What's your warranty terms?

A: We offer 12 months warranty time.

Q:can you provide OEM & Customized service?

A:Yes, OEM and ODM are both available, we have the professional R&D dept which can provide professional solutions for you.

Company Information

Shelok considers itself not only a manufacture but more conprehensively a provider of industry specific customer-oriented solutions.Our profound understanding of product application and strong technical backgrounds ensure you the best product solution and achieve a greater success.

Xi'an Shelok Instrument Technology co.,ltd is a professional R&D center and manufacture of measuring instruments.And here's a variety of products for you choice: pressure transmitters,temperature transmitters,flow transmitters,weighing instruments and so on.Our products have been made by advanced technology, with high quality, fast delivery period, which have attracted so many domestic and foreign customers.



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