Waters ACQUITY QDa - Electrical and I;O Specifications

June 28, 2016, 715003956 Rev. C
Page 68
B.3 Electrical specifications
The following table lists the electrical specifications for the ACQUITY QDa Detector.
B.4 Input/output specifications
The following table lists the input and output specifications for the ACQUITY QDa Detector.
Table B–3: Electrical specifications
Attribute Specification
Protection class
1
1. 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.
Class 1
Overvoltage category
2
2. Overvoltage Category II – Pertains to instruments that receive their electrical power from a local level such as an
electrical wall outlet.
II
Pollution degree
3
3. 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.
2
Moisture protection
4
4. 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.
IPX0
Line voltages, nominal 100 V to 240 V
Frequency 50/60 Hz
Maximum power draw 400 W
Table B–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
Maximum input voltage: 100 V
Minimum input voltage: -100 V
Maximum current: 1.12 mA