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®
- Series VMM
Technical data
Technical changes reserved
- 51 -
11
Technical data
The technical data of customized versions may differ from the data in these instructions.
Please observe the information specified on the type plate.
11.1
Characteristics of the VMM
Type
VMM32 …VMM200
Characteristics Sensor
Measuring range
0…33 ft/s (0…10 m/s)
-
Nominal pipe size
½"
1" 1 ¼" 1 ½" 2" 2 ½" 3"
4"
5"
6"
8"
-
from 0 to
[GPM] 27
77
127 199 310 525 796 1244 1944 2800 4979
-
factory scaled measuring
range (0/4…20 mA)
from 0 to
[GPM]
15
50
50
50
100 250 250 300 500 700 1000
Accuracy *1)
±0.5 % of reading (3.28…32.8 ft/s)
±0.4 % of reading ±0.0033 ft/s (< 3.28 ft/s)
Repeatability
±0.15 % of reading (0.8…32.8 ft/s)
Output signal starting from
> 0 ft/s (depending on the electronics settings, for example on low-
flow suppression)
Response time
< 100 ms (depending on the electronics settings)
Measuring principle
Clocked DC field (DC)
Mounting position:
-
inlet section
-
outlet section
§ 4.3
5 x inner diameter (ID)
2 x inner diameter (ID)
Characteristics display electronics
Electrical characteristics:
Measured value and meas-
ured range
Induced voltage of the connected sensor
Supply voltage
115 V
AC
• (
-
15/+10 %) • 50/60 Hz
230 V
AC
• (
-
15/+10 %) • 50/60 Hz
18…36 V
DC
Power consumption
15 VA
Electrical connection
Terminal strips
Cable glands
-
Display electronics
-
Sockets
M20x1.5 •
(plastic)
M16x1.5 • (metal)
Display *2)
-
Line 1
-
Line 2
LCD, backlight
flow rate in GPM
flow velocity in m/s
*1)
Reference conditions: Media temperature 50...86 °F; Ambient temperature 68...86 °F; warm-up period 30 min.;
straight pipe lengths; inlet 5 x inner diameter, outlet 2 x inner diameter, regularly centered and grounded.
*2)
adjustable via menu
.
