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automatic level machine·1.Scale:0~0.5m to 0~200m·2.Accuracy:0.2%,0.5%·3.Temperature:-25~125 C·4.4~20mA
| Scale | 0~0.5m to 0~200m | Accuracy | 0.2%,0.5% |
|---|---|---|---|
| Temperature | -25~ 125 C | Output signal | 4~20mA |
| Body material | SS304 | Load capacity | 0-750Ω when 4-20mA. |
| Power supply | 2 or 3 wires DC24V(14~36V) | Details | automatic level machine · 1.Scale:0~0.5m to 0~200m · 2.Accuracy:0.2%,0.5% · 3.Temperature:-25~125 C · 4.4~20mA |
| Packaging Detail | 1 unit in single wooden case. |
|---|---|
| Delivery Detail | Delivery within 1-2 weeks after receive payment. |
UDM-20 automatic level machine
UDM-20 hydrostatic level transmitter manufactured by the international advanced sensing diaphragm, coupled with the company's three patented structure. It is mainly used in petrochemical industry, mine, boiler, environmental protection, water treatment industry. It is mainly for level measurement of water, chemical solution, slurry and crude oil under atmospheric pressure.
Features
l High accuracy, work stably while temperature varied.
l Anti ultra pressure sensor, good performance when work overloaded.
l Sealed and explosion-proof designed.
l High composite sensor, micro-chip integrated circuit packaged.
l Can be used in high corrosive liquid or viscous liquid.
Specifications
| Measurement scale | From 0~0.5m to 0~200m |
| Precision | ±0.2%;±0.5% |
| Medium temperature | -25°C~+125°C |
Load capacity | 0-1500Ω when 0-10mA. |
| 0-750Ω when 4-20mA. | |
Power supply | 2 or 3 wires DC24V(14~36V) |
| 4 wires AC220V(170~250V) | |
| Output current overload protection | ≤30mA |
Structure principle
The transmitter is composed by the measuring probe, junction box and fixed connections.
There are silicon pressure sensitive component in the probe. Because of the silicon micro-machining, laser trimming, wafer bonding and other high technology applications, the sensor has good linearity, temperature stability and high precision. Silicon sensitive component is packaged by the isolation diaphragm. It detect the liquid pressure and the upper atmospheric pressure ΔP = ρHg. ρ is the liquid density, H is the liquid height. H = ΔP / ρg, measured ΔP, given ρ , g, you can get the liquid level height.
The silicon pressure sensor transmit liquid level to mV signal. Then sent to the module junction box of the electronic unit. It is amplified and linearized into 4 ~ 20mA constant current standard signal. Adjust the external wiring of the module can complete the range change, zero migration, three-wire and four-wire transmission. The module has the protection of over current (around 28mA).
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