HGLC Oval Gear Flow Meter

Oval gear flow meter is used for the continuous and intermittent flow measurement, it is a kind of positive displacement flow meter, features as follow:
● For fluids with high viscosity and without corrosion
● Easy installation, no requirement to Straight pipe length at upstream / downstream
● High accuracy
● Mechanical counter
● Can be integrated with Pulse-output transmitter or Analog current-output transmitter (on request)
● Communication option for electronic transmitter: RS485 or HART  (on request)

Product Description

Principle

Oval gear meter is generally comprised of a flow transducer and a counter mechanism. The main part of the
transducer is a measuring chamber which consists of a pair of oval wheels and a sealing coupling. The counter
mechanism contains speed reduction gears, adjusting device, counter, and pulse transmitter etc.

structure

In the measuring chamber, a pair of oval wheels and cover plate make a crescent shape cavity which is used as
a measuring unit. The oval wheels are rotated by the pressure difference in the inlet and outlet of the meter and drive
the inlet liquid through the cavity to the outlet, each revolution of the oval wheels displaces fluid four time the volume
of the cavity, the total revolutions of the oval wheels and the revolution rate will be transferred to the mechanical
counter, and the total liquid volume and instantaneous flow will be known by the pointer display and the roller
integration. The attached signal generator converts the rotary axial angular shift to the pulse signal and then transmits
it to the electrical indicator for remote integrated flow and instantaneous flow indication and control.

 

Technical Specification

● Materials of main parts and the nominal operating pressure

Model Meter tube material Cover plate Oval gear Rotary shaft Shaft sleeve Nominal pressure
HGLC-A Cast Cast iron Stainless steel Bronze ( with oil )
or rolling bearing
1.6 Mpa
HGLC-E Cast steel Cast iron, Stainless steel 6.3 Mpa ( for size≤DN50)
4.0 Mpa  ( for size≤DN80 ~ 100)
2.5 Mpa  ( for size≤DN150 ~ 200
HGLC-Q Cast iron Cast iron Alloy aluminum Graphite 1.6 Mpa
HGLC-B, C Stainless steel Stainless steel Stainless steel
HGLC-L Cast aluminum Cast iron Alloy aluminum Bronze ( with oil )
Graphite
1.6 Mpa
Remark:  For HGLC-B, it is SS304;  For HGLC-C, it is SS316

● Accuracy: 0.5%, 0.2% (normal operating temperature -10℃~+60℃)

● Fluid temp. (environment temperature -41℃~+50℃)

HGLC-A, B, C: -20℃~+60℃; 60℃~200℃(with high temp. radiator installed)  HGLC-Q, L: -20℃~+60℃;

● Explosion-proof: Exia Ⅱ CT5, Ex d Ⅱ BT4

● Flow range (Unit: m3/h):

Type Size Viscosity
< 0.3 0.3 ~ 0.8 Cp 0.8 ~ 2 Cp 2 ~ 200 Cp 200 ~ 1000 Cp 1000 ~ 2000 Cp
HGLC-10 DN10 0.2 ~ 0.5 0.08 ~ 0.5 0.08 ~ 0.5 0.05 ~ 0.5 0.06 ~ 0.3 0.03 ~ 0.3 0.03 ~ 0.2
HGLC-15 DN15 0.75 ~ 1.5 0.3 ~ 1.5 0.3 ~ 1.5 0.15 ~ 1.5 0.2 ~ 1.0 0.1 ~ 1.05 0.07 ~ 0.75
HGLC-20 DN20 1.5 ~ 3 1 ~ 3 0.4 ~ 3 0.5 ~ 3 0.3 ~ 3 0.4 ~ 2.1 0.2 ~ 2.1 0.15 ~ 1.5
HGLC-25 DN25 4 ~ 6 3 ~ 6 2 ~ 6 08 ~ 6 1 ~ 6 0.6 ~ 6 0.8 ~ 4.2 0.4 ~ 4.2 0.3 ~ 3
HGLC-40 DN40 9 ~ 15 7.5 ~ 15 5 ~ 15 2 ~ 15 2.5 ~ 15 1.5 ~ 15 2.1 ~ 10.5 1.0 ~ 10.5 0.7 ~ 7.5
HGLC-50 DN50 10 ~ 24 8 ~ 24 8 ~ 24 3 ~ 24 4.8 ~ 24 2.4 ~ 24 2.4 ~ 16.8 1.6 ~ 16.8 1.2 ~ 12
HGLC-B
40, 50
DN40,50 8 ~ 20 6 ~ 20 6 ~ 20 4 ~ 20 4 ~ 20 2 ~ 20 2.8 ~ 14 1.4 ~ 14 1.0 ~ 10
HGLC-B65 DN65 27 ~ 40 20 ~ 40 15 ~ 40 5 ~ 40 8 ~ 20 4 ~ 40 5.6 ~ 28 2.8 ~ 28 2 ~ 20
HGLC-80 DN80 40 ~ 60 30 ~ 60 20 ~ 60 8 ~ 60 12 ~ 60 6 ~ 60 8.4 ~ 42 4.2 ~ 42 3 ~ 30
HGLC-100 DN100 67 ~ 100 50 ~ 100 34 ~ 100 13 ~ 100 20 ~ 100 10 ~ 100 14 ~ 70 6 ~ 70 5 ~ 50
HGLC-150 DN150 127 ~ 190 95 ~ 190 64 ~ 190 24 ~ 190 38 ~ 190 19 ~ 190 26.6 ~ 133 13.3 ~ 133 9.5 ~ 95
HGLC-200 DN200 227 ~ 340 170 ~ 340 114 ~ 340 43 ~ 340 56 ~ 340 34 ~ 340 47.6 ~ 238 23.8 ~ 238 17 ~ 170
Accuracy 0.5% 0.5% 0.2% 0.5% 0.2% 0.5% 0.2% 0.5% 0.5%
Note 1. Flow unit “Gal/h” ( US gallon/hr ) could be used for special orders.
2. Flow range of type HGLC-A80.2 is 1760 ~ 13200 gal/h

 

 

FAQ

Answer : Please send your question or enquiry to our email: sales@hginstrument.com, we will forward the questions to the related engineer.

Answer :  Please communicate with the sales about the return procedure before returning product.

Answer :  The delivery time depends on the order quantity and product specification.  If the product’s specification is conventional ( not special ),  delivery time is 5 or 7 working days for order quantity ≤ 10 pieces;  delivery time is 2 or 3 working weeks for order quantity 15 ~ 30 pieces. 

Answer :  by Courier,  by Sea or by Air

Answer :  Yes,  Generally warranty is one year.

Answer :  From year 2015  to year 2021,  average annual sales is RMB 350 million ( about USD 54.7 million )

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