Atech 4-20mA Water Level Probe Dam Water Level Sensor Capacitive
Water Level Sensor Drinking Water Level Controller
PL301 liquid level transmitter is based on the principle that the
static pressure of the measured liquid level is proportional to the
liquid level height. It uses the piezoresistive effect of diffused
silicon to convert pressure into electrical signals. After
temperature compensation and linear calibration, it is converted
into standard current, voltage, RS485 and other signal outputs, and
can be directly connected to PLC/DSC, display instruments,
computers, etc. It has good stability and reliability. The OEM oil
filled core is enclosed in a stainless steel housing. The front end
protective cap plays the role of protecting the sensor diaphragm,
and can also make the liquid smoothly contact the diaphragm. The
waterproof wire is sealed with the shell, and the air vent pipe in
the cable is connected with the outside. Anti condensation design
of internal structure. PL301 is equipped with micro signal
processing circuit for long-distance transmission. PL301 is widely
used for liquid level measurement and control in environmental
protection, water conservancy, variable and other fields.
Feature of Water Level Sensor
● Long life
● Diffused silicon oil-filed sensor cell
● CE certificate
● Reinforcement cables optional
● Intrinsically sate ,explosion proof
Specifications of Water Level Sensor
| ssure medium | liquid compatible stainless steel |
| pressure ranges | 0~1 m H2O...300 m H2O |
| overload pressure | 150%FS |
| output signal | 4~20mA, 0.4 ~4.5V, 0~5V, RS485, RS232, 868 Mhz 4~20mA+Hart |
| accuracy | 0.1%FS,0.25%FS,0.5%FS (standard) |
| load resistance | RL = (U-10)/0.02(Ω) (4~20mA current output), ＞20KΩ (voltage output) |
| long term stability | 0.2%FS/year |
| supply voltage | 10~36VDC |
| compensated temperature range | -10~70°c |
| operating temperature range | -20~85°c |
| storage temperature range | -40~125°c |
| temperature coefficient of zero | ±0.015%FS/°c@25°c |
| temperature coefficient of span | ±0.02%FS/°c@25°c |
| insulation resistance | 100MΩ@ 250VDC 100MΩ@ 500VDC |
| Pressure connection | screw thread, throw-in type |
| Protection grade | IP68 |
| material of wetted part and housing | 304SS or 316L |
| material of pressure membrane | 316L |
| Response time | 1ms |
Description PL301 Submersible level transmitter
The PL301 submersible level transmitter/hydrostatic level sensor is
designed for use in rivers, reservoirs, storage tanks, boreholes,
vessels and channels. With a long-term immersion protection of 100
meters, they are also ideal for measuring pressure in submerged
pipes and vessels.
For applications where aggressive media such as seawater or
leachate are present, especially landfills, we can offer
submersible level transmitters in high-grade duplex stainless steel
with extremely high corrosion resistance.
Use the triple sealed rear end assembly and custom vented PUR cable
for electrical connection to the hydrostatic level transmitter.
This provides atmospheric pressure reference and guarantees the
integrity of IP68 to a water depth of 100 meters.
The output of the standard submersible level transmitter is a
two-wire 4-20mA signal with a surge protection circuit, which can
reduce the impact of electrical transients caused by nearby
lightning strikes and power fluctuations. For applications that use
a data logger, a proportional version can be used, which provides
0.5-4.5Vdc output from a 5Vdc power supply.
