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
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 Range||0~30, 100, 200, 500, 1000, or customer specified||sccm|
|Repeat ability||±0.25||% Reading|
|Response Time2||65 (Default, 4, 8, 16, 33, 131 selectable||ms|
|Output||Linear: I2C, Analog 0.5~4.5V DC|
|Pressure Range||-0.08 ~ +0.5||MPa|
|Power Supply4||8~24 V DC, 20mA|
|Working Temperature||-10 ~ +55||℃|
|Pins Out||5 Pin, 2.54mm centers, 0.635 mm square|
|Calibration5||Air @ 20℃, 101.325 kPa|
|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
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.
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
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.
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.
Packing & Shipping