Aalborg AFC - Manual (Page 10)

OUTPUT SIGNALS: Linear 0-5 VDC (2000
Ω minimum load impedance); 4-20 mA
optional (50-500
Ω loop resistance); 20 mV peak to peak max noise.
Contact your distributor or Aalborg
7 for optional RS232 or IEEE488 interfaces.
COMMAND SIGNAL: 0-5 VDC (200K
Ω input impedance).
TRANSDUCER INPUT POWER:
AFC 26: (10 sLit/min max) +15 +5% VDC, 80 mA max,
1.2 watts max; -15 +5% VDC, 200 mA max; 3 watts max;
AFC 36: (50 sLit/min max) +15 +5% VDC, 80 mA max,
1.2 watts max; -15 +5% VDC, 600 mA max, 9 watts max.
AFC 46 (100 sLit/min max) +15 +5% VDC, 80 mA max,
1.2 watts max; -15 +5% VDC, 600 mA max, 9 watts max.
Power inputs are each protected by a 750mA M (medium time-lag) resettable fuse, and a
rectifier diode for polarity protection.
WETTED MATERIALS: 316 stainless steel, 416 stainless steel, VITON
7 O-rings;
BUNA-N
7, EPR or KALREZ7 O-rings are optional.
Aalborg
7 makes no expressed or implied guarantees of corrosion resistance of mass flow
meters as pertains to different flow media reacting with components of meters. It is the
customers' sole responsibility to select the model suitable for a particular gas based on
the fluid contacting (wetted) materials offered in the different models.
INLET AND OUTLET CONNECTIONS: 1/4" (AFC 26/AFC 36) or 3/8" (AFC 46) compression
fittings standard; 1/8" or 3/8" compression fittings and 1/4" VCR
7 fittings are optional.
TRANSDUCER INTERFACE CABLE: Flat cable with female 15-pin "D" connector ends is
standard. Optional shielded cable is available with male/female 15-pin “D” connector
ends. [Cable length may not exceed 9.5 feet (3 meters)].
4.3 CE Compliance
Any model AFM or AFC bearing a CE marking on it, is in compliance with the below stated
test standards currently accepted.
EMC Compliance with 89/336/EEC as amended;
Emission Standard: EN 55011:1991,
Group 1, Class A Immunity Standard: EN 55082 1:1992
7