4-20mA Intelligent Big Ball Float Level Transmitter

Brand Dedan
Product origin China
Delivery time 30 days
Supply capacity 500 sets/month

Ball Float Level Transmitter consists of measurement part and signal controller part. According to structural features, the measurement part can be divided into 90 type with small angle, 91type with big angle, 92 type with external float.

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4-20mA Intelligent Big Ball Float Level Transmitter

float level transmitter

Summary

UQD Ball Float Level Transmitter consists of measurement part and signal controller part. According to structural features, the measurement part can be divided into 90 type with small angle, 91type with big angle, 92 type with external float. The signal controller part can be divided into analog type (UQD.A) and intelligent type (UQD.Z).They are perfect instruments for liquid level measurement in production process in petroleum, chemical, metallurgy, power industry and so on.

Operation principle

The measuring unit of UQD ball float level transmitter includes floating ball, balance lever, balance weights, these three elements comprise a torque balance device. The floating ball can float up and down freely by level changing. When the level changes, the floating ball position changes correspondingly and drive the shaft to rotate through connecting rod of the floating ball. The angular displacement sensor in the controller couples with the shaft via a pair of gears. In this way, the changes of level can be converted into electric signal that will be turned into standard current signal in direct proportion by the electronic circuit in the case.

Performance and technical specification	Analog Type ( transmitter head)		Intelligent Type (transmitter head)
Supplying voltage	24V DC
Output signal	4～20mA		4～20mA+HART protocol
Accuracy class	1.5%		1.0% ; 1.5%
Local indication	Ammeter		LCD displayer
Setting methods	Local knob		Local keys; Debugging software + PC; Communicator
Damp time selection	Non		0-32s
Local and remote configuration	Non		Yes
Alarm for exceeding range Diagnosis for failure	Non		Yes
Ambient temperature	-40～80℃	-30～70℃ (for LCD)
Operating temperature	-30℃≤T＜225℃(without radiator) 225℃≤T≤450℃(with radiator)
Load resistance	See load chart
Diameter of the floating ball	Φ230 mm
Nominal pressure	≤6.3MPa
Nominal diameter	DN250
Flange standard	HG/T20592-2009, HG/T20615-2009 or on request
Wetted material	Flange: carbon steel, 304 or on request; Others should be higher than 304 or on request.
Fluid density	≥0.55g/cm³
Power supply inlet	M20*1.5 (female thread) or on request
Protection class	IP67
Explosion-proof	See the explosion-proof type chart

Model selection for intelligent big ball float level transmitter

Model	Code								Code meaning
UQD									Ball float level transmitter
	A								Analog type
	Z								Intelligent type
		-							Small angle type
			90						Small angle type
			91						Big angle type
			92						External float type
				A					Flange:DN250, PN≤2.5MPa, PN2.0MPa (class 150)
				B					Flange: DN250, PN4.0MPa
				C					Flange: DN250, PN6.3MPa, PN5.0MPa (class 300)
					/				Intrinsically safe
						i			Intrinsically safe
						d			Explosion isolation
							T		Flange material: Carbon steel
							H		Flange material: 304(others as actual fill in)
								D	Medium temperature: -30℃≤T≤+225℃(without radiator)
								G	Medium temperature: +225℃＜T≤+450℃ (with radiator)
UQD. □ - □ □ / □ □ □									/Range (unit is mm)

Range and connecting rod length parallel table

Model	Range (mm)	Rod length (mm)	Min diameter (inside diameter, mm)
UQD-90 Ordinary type	400	551	500
	500	718	700
	600	885	850
	700	1051	1050
	800	1218	1200
	900	1385	1350
	1000	1551	1550
	1100	1718	1700
	1200	1885	1850
UQD-91 Big angle type	550	313	550
	600	352	600
	700	430	700
	800	508	750
	900	585	850
	1000	663	900
	1100	741	1000
	1200	819	1100
	1300	897	1150
	1400	975	1250
	1500	1053	1300
	1600	1131	1400
UQD-92 External float type	330	435