float level transmitter / for liquids / HART / 4-20 mA
UQD91 Dandong Top Electronics Instrument (Group) Co.,Ltd



  • Technology:


  • Medium:

    for liquids

  • Other characteristics:

    HART, 4-20 mA, wireless, analog, explosion-proof, intrinsically safe, IECEx, IP67, high-precision

  • Applications:

    for storage tanks

  • Level range:

    Min.: 400 mm

    Max.: 1600 mm

  • Process pressure:

    Min.: 0 bar (0 psi)

    Max.: 63 bar (913.74 psi)

  • Process temperature:

    Min.: -30 °C (-22 °F)

    Max.: 450 °C (842 °F)



UQD Ball Float Level Transmitter consists of measurement part and signal controller part. According to structural features, the measured part can be divided into 90 type with small angle, 91type with big angle, and 92 type with external ball float. The signal controller part can be divided into analog type (UQD.A) and intelligent type (UQD.Z).


It is the ideal instrument for all kinds of medium’s liquid level measurement in petroleum, chemical, metallurgy, power industry and so on.


1) It can realize automatic and accurate control.
2) Safety and comfort
3) High reliability
4) Simple structure, easy installation and fast maintenance


1)Supplying voltage: 24V DC
2) Output signal: 4~20mA+HART protocol
3) Accuracy class: 1.0% ; 1.5%
4) Ambient temperature: -40~+80℃
5) Operating temperature: -30℃≤T≤450℃(with radiator)
6) Diameter of the floating ball: Φ230 mm
7)Nominal diameter:DN250
8)Wetted material:Flange: carbon steel, 304 or on request;
9)Protection class:IP67
10)Explosion-proof:ExiaⅡCT1~T6, ExdⅡCT1~T6