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E-mail: info@kfybc.com
Address: No.38 Bianjing Road, Kaifeng, China
Kaifeng Instrument LL Roots Flow Meter (Positive Displacement)
Product Overviews
The cycloidal suface of rotors are independly designed by our R&D team, it ensures the meter works smoothly with high accuracy. During working, the rotors don't contact with eath other, which ensures a good repeatability and reliablility of the meter.
Features And Functions
l High accuracy, accurate up to 0.1%
l Pistons rotating without contact, good repeatability.
l Low vibration and noise.
l Do not need straight pipe sections at up or down streams, easy to install .
l On-site display，and optional for the photoelectric pulse transmitter or the intelligent gauge outfit to output the pulse and current signals.
Optional Accessories
l Air eliminator
l Strainer
l Integrated air eliminator and strainer
Technical Parameters
|
Nominal Diameter: |
DN15 ~ DN500mm | |
|
Nominal Pressure: |
PN1.6 ~ 6.3MPa |
|
|
Medium: |
Petroleum, Petroleum products, Chemical medium etc. |
|
|
Medium Temperature: |
-20℃～250℃ |
|
|
Ambient Temperature: |
-20℃～55℃ |
|
| Body Material: | Cast Iron/ Cast steel/ SS304/ SS316 | |
| Accuracy: | ±0.1%, ±0.2%, ±0.5% | |
|
Viscosity: |
0.6～500mPa.s |
|
|
Flow Range: |
0.2～3000m3/h |
|
| Power Supply: | 24V.DC (two-wire system/three-wire system) | |
| On-site Indication: |
Mechanical dial (mechanical counter)/ Backlit LCD digital display |
|
| Ex-protection: | ExdⅡBT4 | |
| Housing protection: | IP65 | |
Performance Parameters
| Types |
Roots Flow Meter (Basic type) |
||||
|
Accuracy |
±0.5% |
±0.2%,±0.1% |
|||
|
Viscosity(mPa.s) |
>4~150 |
>150 ~ 500 |
>4~150 |
>150 ~ 500 |
|
|
Nominal Bore（mm） |
Flow Range m3/h |
||||
|
15 |
0.25~2.5 |
0.2~2.2 |
0.5~2.5 |
0.2~2.0 |
|
|
25 |
0.6~6 |
0.4~5 |
1.2~6 |
0.5~5 |
|
|
40 |
1.6~16 |
1.2~14 |
3.2~16 |
1.4~14 |
|
|
50 |
2.5~25 |
2~22 |
5~25 |
2.2~22 |
|
|
80 |
6~60 |
4~50 |
12~60 |
5~50 |
|
|
100 |
10~100 |
7.5~85 |
20~100 |
8.5~85 |
|
|
150 |
25~250 |
20~220 |
50~250 |
22~220 |
|
|
200 |
30~300 |
22~260 |
60~300 |
26~260 |
|
|
250 |
60~600 |
40~500 |
120~600 |
50~500 |
|
|
300 |
100~1000 |
75~850 |
200~1000 |
85~850 |
|
|
400 |
200~2000 |
160~1800 |
400~2000 |
180~1800 |
|
|
500 |
300~3000 |
210~2500 |
600~3000 |
250~2500 |
|
| Type |
Roots Flow Meter( Low viscosity) |
|||||
|
Accuracy |
± 0.5% |
± 0.2% |
||||
|
Viscosity (mPa·s) |
≤0.1~0.5 |
>0.5~2 |
>2~6 |
≤0.1~0.5 |
>0.5~2 |
>2~6 |
|
Nominal Bore (mm) |
Flow Range (m3/h) |
|||||
|
40 |
5.3~16 |
4~16 |
3.2~16 |
6.4~16 |
5.5~16 |
4~16 |
|
50 |
8.3~25 |
6.3~25 |
5~25 |
10~25 |
8.5~25 |
6.3~25 |
|
80 |
20~60 |
15~60 |
12~60 |
24~60 |
20~60 |
15~60 |
|
80 (II) |
15~40 |
13~40 |
12~40 |
16~40 |
13.3~40 |
10~40 |
|
100 |
34~100 |
25~100 |
20~100 |
40~100 |
35~100 |
25~100 |
|
150 |
83~250 |
63~250 |
50~250 |
100~250 |
80~250 |
63~250 |
|
200 |
100~300 |
75~300 |
60~300 |
120~300 |
100~300 |
75~300 |
Industry Applications
>national defense
>chemical
>petroleum
>metallurgy
>energy
>medicine
>light industry
>food
>Water treatment
>Traffic detection
>process control industries
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