Technical Data - ABB FMT400-VTS Operating Instruction
Thermal mass flowmeter
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Also See for FMT400-VTS:
- Commissioning instructions (32 pages) ,
- Commissioning instructions (264 pages)
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10 Technical Data
Type
Application
Measured variable (measured gases)
Measuring ranges
Nominal sizes
DN 25
DN 40
DN 50
DN 80
DN 100
DN 150
DN 200
up to 3000 mm
(square ducts and larger diameters
on request)
Explosion protection
Output
Output signal, analog
Performance characteristic
Measured error
Air, nitrogen
other gases
Repeatability error
Influence of medium temperature
Influence of medium pressure
Response time
Parameter setting
The output signal range of the FMT400-VTS/VTCS flowmeters can be set to either 0...20 mA or
4...20 mA. Additionally, the measuring range window can be extended such that a smaller span corre-
sponds to a 20 mA current signal. Alarm signalling is possible at < 3.5 mA or > 22 mA (selectable).
The measuring instrument parameters can be set via the LKS-adapter. A standard PC or laptop allows
you to change the used output signal and to adjust the measuring range.
42/14-36 EN
Thermal Mass Flowmeter FMT400-VTS, FMT400-VTCS (Sensyflow VT-S/VT-CS)
FMT400-VTS
Process engineering
Flow rate of gases and gas mixtures with known
composition
q
min
0
(1.6)
...
0
(4)
...
0
(7)
...
0
(17)
...
0
(30)
...
0
(80)
...
0
(130)
...
0
(27,000)
...
For air or nitrogen in kg/h (other gases on request)
The above values are guide values for applications involving air under atmospheric conditions
Zone 2/22
0/4...20 mA, load < 750 Ω, electrically isolated, alarm signalling at < 3.5 or > 22 mA
Under calibration conditions in the stated measuring range
≤ ± 0.9 % of measured value ± 0.05 % of possible end value in this nominal size (s. meas. ranges)
≤ ± 1.8 % of measured value ± 0.10 % of possible end value in this nominal size (s. meas. ranges)
< 0.05 %/K of measured value (dependent on type of gas)
< 0.2 %/100 kPa (/bar) of measured value (dependent on type of gas)
T
= 0.5 s (metal sensor 2 s)
63
FMT400-VTCS
Hygienic version
Food and beverage industry
Flow rate of air, N
q
q
max
160
0
430
0
700
0
1,700
0
3,000
8,000
13,000
2,700,000
For special calibration on request
< 0.25 % of measured value
Technical Data
, CO
, O
2
2
2
q
min
max
(1.6)
...
160
(4)
...
430
(7)
...
700
(17)
...
1,700
–
T
= 2 s
63
31
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