Seametrics AO45 - Manual

PUB -19386-1000
Page 1 of 4
General Information Specifications
The SeaMetrics AO45 is a compact pulse to analog con-
verter. Combined with an IP insertion flow sensor or a
WT turbine meter, it is ideal for flow rate recording, PLC
or data logger input, and proportional chemical feed. The
unit is available in a wallmount enclosure or in a round
cast-aluminum housing mounted directly on a SeaMetrics
meter. The nonmetallic wallmount enclosure is splash-
proof and has a clear cover.
The 4-20 mA analog output is suitable for telemetry,
metering pump pacing, data logging, or control applica-
tions. Trimpots are used to adjust the 4 mA and 20 mA
setpoints. The unit can be factory-calibrated or user
calibrated with the proper equipment. The output is a 4-
20 mA current source, which is compatible with elec-
tronic metering pumps, programmable controllers and
computer input cards.
Power
Sensor 6-24 VDC
Current loop 12-36 VDC (see chart)
Voltage Burden 11 VDC
Temperature 32
°
- 130
°
F (0
°
- 55
°
C)
Humidity 85% non-condensing relative
Enclosure
Wall mount polystyrene
Meter mount cast aluminum
Input Open collector transistor
(most SeaMetrics meters)
Frequency range (@ 20 mA output)
Low 10 - 100 Hz
High 100 - 1000 Hz
Output Proportional 4 - 20 mA
Response Time 3 sec. to 95 % output
AO45 Analog Transmitter
Instructions
Features
Calibration by
factory or in field
Meter or wall
mount housings
Two frequency ranges
Isolated or
non-isolated output
DIS
CON
TIN
UED