UQK-A Top Mounted Float Level Switch
Functions and working principle
UQK magnetic floater liquid level switches is widely used in liquid level control and alarm in open and closed container in lines of industrial, civil architecture, water and sewage. It is a safe, economic, reliable, using flexible level controller with various functions.
UQK type level switches is consisting of magnetic floater, stable leader, reed switches, explosion isolation type wiring box and installing fittings. Magnetic floater moves with  liquid   level up and down, and the reed contactors in the leader changing on and off switch and output  the signal accordingly.
Reed tube contactors changing on and off instantaneously, and match with relays, it can realize various high pressure and large current control. The read contactors is strictly sealed in glass which were filled with inactive gas, so the contactors won't generate spark when contactors on or off. It can control the liquid level safely.
UQK type magnetic floater level switches have the following control types:     a.High, High High level,  b. low, low low level control and alarm
Floater number: >=1pcs, one floater have two set points
Normally open: When the reed switch in the magnetic area, it is closed; when out of the magnetic area, it is open (not work).
Normally close: When the reed switch in the magnetic area, it is open; when out of the magnetic area, it is closed (work). See to picture bellow:
 Technique parameters
1. Fluid density: >0.6/cm3
   Fluid temperature: -20 ºC ~ 130ºC Fluid pressure: 0~2.5Mpa
   Fluid viscosity: 0.007Pa.s, 10-4m2/s
2.Control sensitivity: 10mm
3.Contactor output value: DC24V, 0.5A; 220V 0.3A (1A) Contactor life: 5*105times
4.Measure ranges: 500mm~6000mm
5.Connection:flanged or screw on order
6.floater size: Φ150, (Φ120,Φ52 selectable) Leader: Φ20*2 (Φ12 is selectable)
7.With Explosion-proof function
8.Head material: Pressure Die-Cast Aluminium Enclosure weather proof/Ex-proof IIA/IIB class
9.SS304 / SS 316 / SS 316L / PP Ball Type Floats
10.MS still pipe as std and SS 304 / SS 316 on demand
11.Micro switch is rated at 0.3A/220VAC, 1A/3A 220VAC, SPDT or DPDT
12.Top Mounting with 100 NB MS Powder coated Flange as std. other material on demand
13.Can be supplied with External Cage and isolation valves
14.Contact types: normally open (NO), Normally close (NC), NO/NC
15.Types of Switch control:
   a.High level control
   b.High level control and alarm
   c.High level control and high level, low level alarm
   d.Low level control
   e.Low level control and alarm
   f.Low level control and high level, low level alarm

UR type resistance liquid level Switch and UQK-B level transmitter







UQK-B resistance and 4~20mA liquid level transmitter
UQK-B type liquid level transmitter comprises of a level transducer and a transmitter. The transducer sensed voltage is fed to the transmitter for conversion to a signal of 4-20 mA, which can be either processed through a display unit to give a digital indication, with or without alarm set points or employed for use with Process Indicator, PLC/DCS or Recorders. The 4~20mA signal can transmit in the scope of 0~3Km which overcome the defect that the resist value changing during the remote transmitting to digital instrument.

Model selection