LLQ SERIES GAS ROOTS FLOWMETER

 

 
       
 

2 Functions and Features:
■ The rotor and shell of flowmeter uses CNC machining center to process precisely and balance. The rotor adopts packing grains which are high-temperature and ultrafine for surface treatment. When it works, it doesn’t have any abrasion. There is no contact-type seal. It has the function of self-cleaning and can lubricate the bearing very well. The marstely design and machining technics can ensure that flowmeter can work normally for a long time.
■ The high precision doesn’t need to regulate forever. It will never be affected by the change of medium’s working condition. The starting flow is small. The pressure loss is little. The span ratio is wide. It is used to measure the micro flow.
â–  The product has wonderful intellectualization and powerful functions. It has the functions of signal outputing and traffic data storaging.
â–  The product has a lot of structural type, such as mechnical accounting type, versatile numeric type, and the compound type of mechnical and versatile, which is convenient for the users.
â–  It combines the flow temperature, pressure sensor and intelligent flow totalizer into one, which can output and control the flow signal.
■ The gauge outfit of flowmeter can rotate any directions by 180° and is easy to installate.

2 Technical parameter:
â– Using condition
Ambient temperature: -30°~60°   Medium temperature: -40°~85°
■Relative humidity: 5﹪~95﹪     Ambient pressure: 70~106Kpa
■Nominal caliber: DN25~DN100  
If you have some special requirements, we can supply much larger caliber flowmeter.
■Nominal pressure: 1~4Mpa
If you have some special requirements, we can suply much more pressure flowmeter.
■Repeatability: over 0.3﹪ Accuracy: ±1.0﹪ or ±1.5﹪ The explosion-proof degree: ExiallCT4
■Protection grade: IP65 (normal)  Under the particular condition, it can be up to IP68.







 
       
 Dimension (Unit: mm)

Type

Size
(mm)

Starting flow
(m3/h)

Flow range
(m3/h)

Maxium loss of pressure
(Pa)

Span ratio

Pressure rating
(Mpa)

Precision
(﹪)

Material

LLQ-25

25

0.05

1.00~20

80

20:1

1.0

1.5

Aluminium alloy

LLQ-30

32

0.07

1.09-30

80

30:1

1.0

1.5

Aluminium alloy

LLQ-40

40

0.07

1.17-40

100

34:1

1.0

1.5

Aluminium alloy

LLQ-85

50

0.07

1.42-85

200

60:1

1.0

1.5

Aluminium alloy

LLQ-150

80

0.08

1.65-150

220

90:1

1.0

1.5

Aluminium alloy

LLQ-200

80

0.11

2.30-200

230

87:1

1.0

1.5

Aluminium alloy

LLQ-250

100

0.11

2.74-250

300

90:1

1.0

1.5

Aluminium alloy

LLQ-450

100

0.11

5.00-450

450

90:1

1.0

1.5

Aluminium alloy

 

 
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