40
Chapter 7. SPECIFICATIONS
Individual CMG model specifications
Item
Specifications
Model No.
CMG15
CMG25
CMG40
CMG50
Piping size
Thread connection
Rc 1/2"
Rc 1"
Rc 1 1/2"
Rc 2"
Flange connection
-
-
40A JIS 10K RF
50A JIS 10K RF
Fuel gas
(13A-46MJ/m
3
), air
In the measurement range
When the ambient temperature
is +10 to +40 °C:
±4 % rdg. ± 1 digit
When the ambient temperature
is −10 to +60 °C (excluding the
above range):
±6 % rdg. ± 1 digit
In the measurement range
When the ambient temperature is +10
to +40 °C:
±1 % FS ± 1 digit: when the flow rate is
less than 25 % FS
±4 % rdg. ± 1 digit: when the flow rate is
25 % FS or more
When the ambient temperature is −10 to
+60 °C (excluding the above range):
±1.5 % FS ± 1 digit: when the flow rate is
less than 25 % FS
±6 % rdg. ± 1 digit: when flow rate is 25
% FS or more
Propane,
butane
In the measurement range
When the ambient temperature
is +10 to +40 °C:
±6 % rdg. ± 1 digit
In the measurement range
When the ambient temperature is +10
to +40 °C:
±1.5 % FS ± 1 digit: when the flow rate is
less than 25 % FS
±6 % rdg. ± 1 digit: when flow rate is 25
% FS or more
Flow rate range
*
1
m/h (normal) *
2
Measurement *
3
range (top)
Display range
(bottom)
Fuel gas(13A)
Air
0.50 to 4.00
0.00 to 7.00
1.00 to 10.00
0.00 to 16.00
3.0 to 30.0
0.0 to 35.0
8.0 to 80.0
0.0 to100.0
15.0 to 150.0
0.0 to 170.0
8.0 to 80.0
0.0 to 100.0
15.0 to150.0
0.0 to 170.0
Propane
0.20 to 2.00
0.00 to 3.00
0.40 to 4.00
0.00 to 6.00
1.00 to 10.00
0.00 to 12.00
2.5 to 25.0
0.0 to 30.0
5.0 to 50.0
0.0 to 55.0
2.5 to 25.0
0.0 to 30.0
5.0 to 50.0
0.0 to 55.0
Butane
0.10 to 1.00
0.00 to 1.50
0.30 to 3.00
0.00 to 4.50
0.80 to 8.00
0.00 to 10.00
2.0 to 20.0
0.0 to 25.0
4.0 to 40.0
0.0 to 45.0
2.0 to 20.0
0.0 to 25.0
4.0 to 40.0
0.0 to 45.0
Straight pipe con-
nectionlength for
pipe with 90°bent
*
4
Upstream side
Not
required
Not
required
15cm or
more
10cm or
more
40cm or
more
10cm or
more
40cm or
more
Downstream
side
Not
required
Not
required
10cm or
more
5cm or
more
20cm or
more
5cm or
more
20cm or
more
Pressure lossup-
per limit value
for air
Thread connection 140Pa
215Pa
210Pa
500Pa
1300Pa
285Pa
550Pa
Flange connection
-
-
-
390Pa
840Pa
250Pa
430Pa
Mass
Rc thread
Approx.
850g
Approx. 800g
Approx. 2100g
Approx. 2000g
Flange
-
-
Approx. 9 kg
Approx. 10 kg
*1
: The number of digits displayed after the decimal point for m
3
/h is the same as that shown in
the table.
