Waters 2998, Обзор и руководство по обслуживанию

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December 5, 2017, 715004753 Rev. B
Page 80
B.4 Performance specifications
The following table lists the performance specifications for the 2998 PDA detector.
Table B–3: Electrical specifications
Attribute Specification
Protection class
a
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.
Class I
Overvoltage category
b
b.
Overvoltage Category II
–
Pertains to instruments that receive their electrical power from a local level such as an
electrical wall outlet.
II
Pollution degree
c
c.
Pollution Degree 2
–
A measure of pollution on electrical circuits, which may 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
d
d.
Moisture Protection
– Normal (IPXO) – IPXO 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.
Normal (IPXO)
Line voltages, nominal
Grounded AC
AC line voltage 100 to 240 Vac nominal
Frequency 50 to 60 Hz
Fuse Two fuses:
100 to 240 Vac, 50 to 60 Hz
F 3.15 A 250 V fast blow, 5
×
20 mm (IEC)
Power consumption 195 VA nominal
Table B–4: Performance specifications
Attribute Specification
Wavelength range 190 to 800 nm
Bandwidth 1.2 nm
Photodiodes 512
Digital resolution 1.2 nm/pixel
Wavelength accuracy
±1.0 nm (via patented erbium
a
filter)
Wavelength repeatability ±0.1 nm
Digital filter Variable, with sampling rate
Second-order filter Fixed, 371 nm to 800 nm