Rotary Natural Gas Flow Meters

 

RVG rotary gas meters are volume measuring instruments for gaseous media and operate according to the displacement principle. They register the gas volume under working conditions. In order to correct the measured value to the standard volume, electronic volume correctors can be used.

134 EI RVG ST k

RVG-ST G10-G25

Robust compact rotary gas meters for screwed or flange connection in aluminium housing

Diameter mm
inch
25-50
1-2
Flow range size metric
imperial
G 10 - G 25
5C - 14C
Qmax m³/h
cfh
16- 40
565 - 1400
Qmin m³/h
cfh
0.5
17
Rangeability   1:20 - 1:80
Maximum error of reading Qt - Qmax
Qmin - Qt*
±1%
±2%
Repeatability % of reading lt 0.1 %
Body material   aluminium
Screwed connection inch 1, 1¼, 1½, 2
Flange ratings PN
ANSI
16
150
Pressure Range MPa g
bar g
psi g
0-2
0-20
0-290
Temperature Range
(ambient, process)
standard
optional
-20 to +60 C
-40 to +60 C
Ingress Protection   IP67
Index gradual / continuous by ±90°, 180°
LF-sensor standard 1
HF-sensor optional 1
Lubrication   integrated sump

133 EI RVG k

RVG G16 to G400

The RVG G16 to G400 meters operate on the displacement principle in a rangeability of up to 1:160. The housing is made of aluminium or spheroidal graphite iron. The spheroidal graphite iron versions are firesafe up to a pressure of 4 bar. The bearings are lubricated with oil. Two low-frequency pulsers come as standard as well as a tampering control contact. A high-frequency pulser can be supplied on request.

Diameter mm
inch
40 - 150
1½ - 6
Flow range size metric
imperial
G 16 - G 400
8C - 23M
Qmax m³/h
cfh
25 - 650
565 - 1400
Qmin m³/h
cfh
0.6
21
Rangeability   1:20 - 1:160
Maximum error of reading Qt - Qmax
Qmin - Qt*
±1%
±2%
Repeatability % of reading lt 0.1 %
Body material   aluminium, ductile iron
Screwed connection   no
Flange ratings PN
ANSI
16
150
Pressure Range MPa g
bar g
psi g
0-2
0-20
0-290
Temperature Range
(ambient, process)
  -20 to +60 C
Ingress Protection   IP67
Index gradual / continuous
standard
optional
optional
350 °
S1
S1D
Encoder S1D
LF-sensor standard 2 + PCM
HF-sensor optional 1
Lubrication   integrated sump

* Qt = 0.2 Qmax for rangeability 1:20
 Qt = 0.1 Qmax for rangeability 1:50
 Qt = 0.05 Qmax for rangeability > 1:50

146 EI IRM 1 Encoder S1D k

IRM-1

The IRM-1 meter basically consists of a measurement module and a pressure housing, separating the flow measurement from the process. The result is a reliable, high performance meter, with unprecedented flexibility.

Diameter mm
inch
40 - 100
1½ - 4
Flow range size metric
imperial
G 16 - G 250
8C - 14M
Qmax m³/h
cfh
25 - 400
883 - 14000
Qmin m³/h
cfh
0.4
12
Rangeability   1:20 - 1:250
Maximum error of reading Qt - Qmax
Qmin - Qt*
±1%
±2%
Repeatability % of reading lt 0.1 %
Body material   aluminium, ductile iron
Screwed connection   no
Flange ratings PN
ANSI
16
150
Pressure Range MPa g
bar g
psi g
0-1.6
0-16
0-232
Temperature Range
(ambient, process)
  -20 to +60 C
Ingress Protection   IP65
Index gradual / continuous
standard
optional
optional
350 °
Universal Index
Compact Index
Multi IndexEncoder S1D
LF-sensor standard 2
HF-sensor optional 2
Lubrication   integrated sump

* Qt = 0.2 Qmax for rangeability 1:20
 Qt = 0.1 Qmax for rangeability 1:50
 Qt = 0.05 Qmax for rangeability > 1:50

 
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If you require further information on this product or would like a quotation, please contact dp-flow on:

email: 
sales +44 1923 462500

Supplied by DP-Flow