AO55 ISO 9 0 0 1 : 2 0 0 8 CERTIFIED COMPANY AO55 BLIND ANALOG TRANSMITTER INSTRUCTIONS BLIND ANALOG TRANSMITTER INSTRUCTIONS
GENERAL INFORMATION, SPECIFICATIONS and INSTALLATION GENERAL INFORMATION INSTALLATION The Seametrics AO55 is a blind (non-indicating) 4-20 mA transmitter, designed for use with almost all Seametrics flow sensors. It accepts a pulse frequency input from the flow sensor, and converts this input into a continuous analog output signal. Power for the transmitter is taken from the current loop itself, so only two wires are required.
SETTINGS, CALIBRATION and FREQUENCY 3) Calculate the frequency as 54.50 x 170 = 154.42 60 4) Rounding to one decimal point, enter 154.4 on the rotary switches by turning the rotary switch pointers to the desired digits.
CONNECTIONS and TROUBLESHOOTING CONNECTIONS The AO55 can be wired to either a mechanical meter or a magmeter. See alternative configurations below.
