MODBUS Level Transmitter

MODBUS Level Transmitter

●Data networking gathering.
●Advanced circuit design.
●HART protocol or MODBUS protocol(RS485 interface).
●Full stainless steel structure, samll profile, light weight.
●Digital communication technology.
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Product Details

MODBUS Level Transmitter


ULB-I MODBUS level transmitter is a fully sealed submersible intelligent level measuring instrument. Based on silicon piezoresistive technology, this product is designed for liquid level measurement by using silicon die with good stability and processing electric circuit of high accuracy smart transmitter, and using precise digital temperature compensation technology and the non-linearity revision technology. The waterproof cable with vent hose of this MODBUS level transmitter is sealed connected with its housing, it is suitable for submersible applications.

The output of ULB-I is digital signal, this makes this MODBUS level transmitter carry on transmission with computer directly.


●Data networking gathering

●Advanced circuit design

●HART protocol or MODBUS protocol(RS485 interface)

●Full stainless steel structure, samll profile, light weight

●Digital communication technology


pressure mediumgas or liquid compatible to wetted stainless steel
pressure ranges0~1mH2O...200mH2O
overload pressure 150%FS
output signalDigital signal or digital signal with 4~20mA analog signal
communicationsMODBUS protocol(RS485 interface)or HART protocol
accuracy 0.1%FS,0.25%FS(standard), 0.5%FS
load resistance  RL=(U-12V)/0.02A(HART 4~20mA current output)U—loop voltage(V)
long-term stability <0.2%FS/year
supply voltage12~32VDC
compensated temperature range-10~+70℃ 
operating temperature range-30~+100℃
storage temperature range-40~+120℃
temperature coefficient of zero0.2%FS/10℃
temperature coefficient of span0.2%FS/10℃
insulation resistance100MΩ@50VDC
electrical connectionΦ7.2mm PUR cable with vent hose
material of wetted part and housing316SS
material of pressure membrane316LSS

ULB-I MODBUS Level transmitter is designed with IP68 protection, it is widely applied in petroleum, chemical industry,  medicine, metallurgy, hydrology exploration etc.