NYSP Intelligent RF Admittance Level Transmitter Unique
Driving-Shield Circuit Design
The working Principle of NYSP Intelligent RF Admittance Level
Transmitter
The radiofrequency admittance level meter is a continuous level
measurement product based on the principle of radiofrequency
admittance The product has the advantages of high stability, high
sensitivity and wide application. Compared with the traditional
capacitive level meter, the modular design is adopted to achieve
simple and convenient meter setting. Once the setting is completed,
the meter can be used normally and maintenance free for life. Users
can intuitively understand the operation of equipment, and timely
deal with problems, in complex industrial situations is also safe
and reliable.
Radiofrequency admittance measurement technology is a kind of level
measurement technology with unique advantages. Although the concept
is very similar to the general capacitive measurement technology,
the RF admittance technology adds DrivingShield circuit and chopper
circuit in the electronic unit, so it can realize the separate
measurement of impedance and capacitive reactance.according to the
laws of physics, the impedance and reactance of any hanging
material are equal, so the effect caused by the hanging material
can be measured and eliminated from the total output by the phase
shift of the oscillating circuit.
The probe of the radiofrequency admittance level meter is installed
in the storage tank, and the change of the radio frequency signal
caused by the change of the level is obtained through the probe.
The driving-shield end of the probe prevents the RF current from
forming a loop through the hanging material, ensuring the accuracy
of the meter measurement.
Design features of NYSP Intelligent RF Admittance Level Transmitter
◎ anti hanging: the unique driving shield circuit design improves
the anti hanging ability
◎ power supply range: power supply working range: 13 ~ 35vdc
◎ probe process temperature: - 100 ℃ ~ 800 ℃
◎No dead zone measurement, can be applied to a large range of
material level measurement occasions of more than ten centimeters
or even several centimeters
◎The maximum measuring range can reach hundred meters, even
hundreds of meters
◎Viscous material interface measurement is a great advantage of
this instrument
◎stable and reliable output, resistant to fly ash, falling
material, water vapor, crystallization and wax
◎no movement, no parts easy to wear, no regular cleaning,
maintenance and debugging
Technical parameters
| Typical application | Liquid(Corrosion, conductivity, low dielectric constant, stirring,
interface, electric dehydration, viscosity, deep well, ultra large
range and other occasions) |
| Dust (conductivity, insulating powder, etc.) |
| Solid (conductivity, insulating, ultra-high temperature insulating
solid, etc.) |
product model
| NYSP-M16 NYSP-M17 NYSP-M18 NYSP-M19 NYSP-M20 NYSP-M21 NYSP-M22
NYSP-M23 NYSP-M24 |
Antenna form
| Soft cable, insulated soft cable, non insulated soft cable, hard
rod, insulated hard rod, insulated hard rod at both ends,
cylindrical hard rod |
| Antenna Material | PTFE,304,316 |
| measuring range | 3m, 20m(Deep well can measure hundreds of meters and can be
customized) |
| Wavelength | 635-650mm |
| Measurement precision | 0.05%~0.1%F.S |
| Power supply | 24VDC |
signal output | 4...20mA/HART/ RS485/Modbus…. |
| Process temperature | -40~+130℃,-100~+200℃, -40~+260℃, -50~+500℃ |
| Process pressure | -0.1~1.6MPa,-0.1~4.0MPa, -0.1~6.3MPa |
| Process connection | screw thread,flange(selectable) |
| Electrical interface | M20*1.5,½ ″NPT |
| levels of protection | IP65,IP67,IP68(selectable) |
| Explosion-proof grade | Exia II CT6 Ga,Exd II CT6 Gb(See certificate for details)
|
※Note:The product can be customized according to the specific
requirements of users.
