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 Envic
AFD-1
The AFD-1 instrument has been designed for the measurement of
air velocity and air flow. It has a 4-digit display and a voltage
or current output propotional to the airflow.
The display and output scaling can be programmed for air velocity
(m/s) or volume flow (m3/s) by push-button keys inside the instrument.
As an option AFD-1 also might have two adjustable limit switches
which can be used as alarm or ON-OFF control operation. |
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Specifications AFT-1D
| measuring ranges |
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0-1/5/10/20 m/s |
| outputs |
1) |
Voltage 0..10V, min. load >1 MOhm |
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2) |
Current 0..20 mA or 4..20 mA,
max. load <500 Ohm |
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3) |
RS-485 serial port, rate 1200 Baud |
| D/A conversion |
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4 uA resolution |
| operating temperature |
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-20..+80°C (measurement head)
0..+50°C (electronics) |
| temperature dependence |
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< 0.003%/°C |
| alarm limits |
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additional 2 adjustable upper or lower limits closing
relay contact outputs (max. 230VAC,2A) hysteresis approx.
0.05 m/s |
| power supply |
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24VDC ±10% |
| Applications for AFD-1 |
| air conditioning and energy control systems
in buildings and industrial premises |
| control systems in industrial processes |
| measurement in clean room and other controlled
cleanliness operations |
| food and medicine storage monitoring |
| working enviroment and hygiene condition measurements
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