4-20mA 304 Stainless Steel Liquid Level Sensor
QST-201 series liquid level transmitters are consisting of well-sealed immerging oil-filled liquid level transducers and special circuit for manometers. Have characteristics of high precision, good stability, long life and easy to fix. Adopt special sealed configuration, so with good capability of anti-leakage. According the relation between pressure, density and liquid level, the liquid level transducers measure the liquid pressure which in direct ratio with depth of liquid, then via amplificatory circuit, the measured pressure is transferred to standard 4~20mA current signal(or standard voltage signal).
Feature:
Range:0~0.6 mH2O....0~200 mH2O
Sealed structure: IP68.
Accuracy: 0.1% FS, 0.25% FS (standard)
There is two kinds of connector to be chosen: intracavity or flush membrane type Integrated construction, without external adjustment.
Dimensions:
Technical Specifications:
| Measuring media |
media which are compatible to 316 stainless steel |
| Measuring range |
mH2O |
0~0.6,0~1,0~2,0~5,0~10,0~20,0~50,0~100,0~200 |
| Overload pressure |
%FS |
150 |
| Signal output |
transmitter, mA (2 wires) |
4~20 |
| transmitter, Vdc (3 wires) |
0~5 |
| Power supply |
Vdc |
12~36(Model 24) |
| Combined accuracy |
%FS |
±0.25,± 0.5 |
| Long-term stability |
%FS/year |
<±0.5 |
| Response time |
ms |
<2 |
| Storage temp. |
ºC |
-40~+100 |
| Operation temp. |
ºC |
0~+80 |
| Compensated temp. |
ºC |
0~+50 |
| Temp. coefficient of ZERO |
%FS/10ºC |
0.2 |
| Temp. coefficient of SPAN |
%FS/10ºC |
0.5 |
| Insulation resistance |
M Ω |
≥500 @ 100 Vdc |
| Load resistance |
current output, Ohm |
250~1100 |
| voltage output, Ohm |
>5000 |
| Electrical connection |
M20x1.5 |
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| Environmental protection |
IP rating |
IP 68 (for probe and cable) |
| IP 65 (for housing) |
| Material |
Diaphragm |
316 SS |
| housing for electronics |
cast aluminium |
Cable Connections:
Audited Supplier 
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