Description of YFM800 Hot Gas Mass Flow Meter
YFM800 series gas thermal mass flowmeter is a flowmeter based on
thermal diffusion principle.That is, when the fluid flows through
the heating object, the heat loss of the heating object is
proportional to the flow rate of the fluid.Specifically, the sensor
of the flowmeter has two standard RTD, one is used as a heat
source, the other is used to measure the temperature of the fluid,
the fluid flow, the temperature difference between the two is
non-linear relationship with the size of the flow, the meter can
convert this relationship into the linear output of the measurement
flow signal.There are two design methods for flowmeter manufactured
by thermal diffusion principle: one is based on thermostatic
difference principle;The second is based on the constant power
principle.Based on the common data model: P/ train T=A+B(Q) n.
where: P -- dissipated power; T -- temperature difference between
two sensors; Q -- mass flow; N -- exponential coefficient; A and B
are the coefficient related to the thermal performance of the gas.
Thermostatic difference principle: T remains constant, dissipated
power P and fluid flow Q into an exponential function increasing
relationship. Constant power principle: dissipated power constant,
temperature difference delta T and the flow of fluid Q into the
relationship of exponential decline function. Our company adopts
the thermostatic difference method.
Features of YFM800 Hot Gas Mass Flow Meter
1. The patented platinum RTD sensor with high stability is adopted
2. True mass flowmeter without temperature and pressure
compensation.The mass flow rate or standard flow rate of the gas
can be obtained.
3. The range ratio is 500:1, which can be extended according to
user's requirement
4. Large pipe diameter and small flow can be measured, and the
minimum flow can be measured as low as 0.5Nm/S
5. No moving parts, vibration can be ignored
6. Straight pipe section is not required to be high 1-2d
7. It is independent of the temperature and pressure of the medium
8. Digital design, digital circuit measurement, accurate, easy
maintenance
9. Not sensitive to small particles such as dust.
10. Online continuous loading and unloading, easy maintenance.
Specification of YFM800 Hot Gas Mass Flow Meter
| Measuring range | 0.5~100Nm/s |
| Accuracy rating | 1.0% reading, 0.5% full range |
| Range ratio | Typically 100:1 (depending on the range of calibrated flows)) |
| Pipe diameter range | 15~8000mm |
| Range of application | Suitable for all kinds of single or mixed gases.Dust, sand, and
other corrosive gases |
| Ambient temperature range | - 40 ºC ~ + 85 ºC (not shown), and 30 ºC ~ + 70 ºC (show), humidity <90% RH |
| Dielectric temperature range | -40ºC~+100ºC,-40ºC~+200ºC,-40ºC~+350ºC |
| Sensor diameter | φ2.5,φ3,φ4 |
| Insert sensor probe rod diameter | φ19,φ25 |
| Sensor material | 316 stainless steel, hastelloy, titanium |
| Probe rod material (protective cover) | 316G stainless steel (standard), hastelloy |
| Analog output | Output flow: 4-20 mADC , temperature: 4-20 mADC, maximum load: 500
Ω |
| Power supply | The whole machine DC24V/AC220V,Split converter AC220V |
| Pressure of work | plug-in≤2.5mpa,pipeline≤4.0mpa |
| Installation process | Insert type (clamp sleeve, clamp sleeve + ball valve, flange
connection),Pipe type (flange, threaded connection) |
| Explosion-proof grade | Intrinsic safety, flameproof |
| Protection grade | IP65 |
Nominal diameter | DN15 | DN25 | DN40 | DN50 | DN80 | DN100 | DN150 | DN200 | DN250 | DN300 |
L(mm) | 300 | 300 | 350 | 350 | 450 | 450 | 500 | 600 | 600 | 650 |
H(mm) | 300 | 300 | 300 | 300 | 350 | 380 | 400 | 450 | 500 | 550 |
FAQ
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
