C.3 Electrical specifications
The following table lists the electrical specifications for the ACQUITY RDa detector.
Table C–3: Electrical specifications
Attribute Specification
Protection class
a
Class I
Overvoltage category
b
II
Pollution degree
c
2
Moisture protection
d
IPX0
Line voltages, nominal 100 V to 240 V
Frequency 50/60 Hz
Maximum power draw 400 W
a. Protection Class I – The insulating scheme used in the instrument to protect from electrical shock. Class I identifies a single
level of insulation between live parts (wires) and exposed conductive parts (metal panels), in which the exposed conductive
parts are connected to a grounding system. In turn, this grounding system is connected to the third pin (ground pin) on the
electrical power cord plug.
b. Overvoltage Category II – Pertains to instruments that receive their electrical power from a local level such as an electrical
wall outlet.
c. Pollution Degree 2 – A measure of pollution on electrical circuits that can produce a reduction of dielectric strength or surface
resistivity. Degree 2 refers only to normally nonconductive pollution. Occasionally, however, expect a temporary conductivity
caused by condensation.
d. Moisture Protection – Normal (IPX0) – IPX0 means that no Ingress Protection against any type of dripping or sprayed water
exists. The “X” is a placeholder that identifies protection against dust, if applicable.
C.4 Input Output specifications
The following table lists the input and output specifications for the ACQUITY RDa detector.
Table C–4: Input and output specifications
Attribute Specification
USB Ports Maximum voltage: 5 V
Maximum current: 1 A
Transmission rate: 480 Mbits/s
Com Port (RS232) Baud rate: 9600
8 bits, no parity, 1 stop bit (8-N-1)
Contact Closure Outputs (Stop Flow/Switch) Maximum voltage: 30 V
Maximum current: 0.5 A
Maximum VA rating: 3 W
Event Inputs (Inject Start/Event In) Voltage threshold: 2.5 V
August 20, 2021, 715005003 Ver. 04 (Previously released as Revision C)
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