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HG2 Low-Pressure Mercury Lamps from Heraeus Noblelight
 Lamp Selection  An overview of all lamps offered by us for analytical and medical technology
 NK Mercury Lamps  More information on NK series mercury lamps from Heraeus Noblelight
 St Mercury Lamps  More information on St series mercury lamps from Heraeus Noblelight
 HPK 125W  More information on HPK 125W mercury lamps from Heraeus Noblelight
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HG2 low-pressure mercury lamps from Heraeus Noblelight have a highly stable output pre-
dominantly at the 253.7 nm mercury line. When used with the Heraeus C430 power supply, the line output is much higher than and the stability comparable to that of a deuterium lamp.

Other lines, which total 20% of the output, are at 313, 365, 404 and 435 nm. The lamp has a strike voltage requirement of just 21 V and a typical power requirement of 2.7 W, making this lamp especially suitable for use in portable instruments.

HG2 Low-Pressure Mercury Lamps from Heraeus Noblelight
HG2 mercury lamp spectrum/output HG2 mercury lamps can be used for applications such as mercury analyzers, fluorimetry, pol-
lution analyzers, fixed wavelength detectors and calibration equipment. In particular, they are utilized in the Fixed Wavelength Monitor from Knauer (A0315) and in the Merlin from PS Ana-
lytical.

It is advisable that the lamp should be mounted with the base and lead uppermost. Any clamp around the lamp envelope should be at the base end of the lamp. The clamp should be of low thermal capacity and poor thermal conduction.

In case the mount is such that it cools the lamp significantly, mercury can be condensed in this region, adversely affecting the performance of the lamp. The HG2 is temperature sensitive and must be protected from draughts if optimum stability is to be achieved.

Left image:
Spectrum/Output

TECHNICAL INFORMATION
Anode strike voltage 21 V DC max. / 18 V DC typical
Anode running voltage at 150 mA 8 - 14 V DC
Anode current 100 - 300 mA (150 mA recommended)
Filament strike voltage 5 - 7 V DC
Filament running voltage 3 - 4.5 V DC
Filament running voltage at 150 mA anode current 3.5 V DC nominal
Filament strike current 400 mA at 6 V DC nominal
Filament running current 250 mA at 3.5 V DC nominal
Power dissipation at strike 8.7 W max.
Power dissipation durring run 2.7 W typical
Warm up time 15 - 30 min
Output at lamp surface at 253.7 nm with 150 mA anode current 15 mW/cm2
Output at lamp surface at 253.7 nm with 300 mA anode current 30 mW/cm2
Output at lamp surface at 365 nm with 150 mA anode current 1.0 mW/cm2
Output at lamp surface at 365 nm with 300 mA anode current 2.4 mW/cm2
Noise at 253.7 nm and constant temperature 1 - 2 % typical
Drift/hour (initial) <5 %
Lifetime 2000 hrs min. / 4000 hrs typical
Center of gas discharge position 35 - 39 mm above base line
Output viewing angle 140° cone angle about lamp center line
Temperature envelope optimum 55 - 60° C, fluctuation 1° C

Right image: HG2 low-pressure mercury lamp dimensions

C430 POWER SUPPLY
The Heraeus Noblelight C430 power supply is available for OEM use in board form. It is specifi-
cally designed to operate HG2 low-pressure mercury lamps in original equipment under optimal conditions.

At switch on the heaters are run at 400 mA constant current. This gives a "soft start" to the hea-
ters and therefore prolongs the lamp life.

HG2 low-pressure mercury lamp dimensions
TECHNICAL INFORMATION C430 POWER SUPPLY
Cathode heater supply 400 mA starting phase / 250 mA run phase
Anode supply 150 mA
Stability anode current noise <0.2% / drift (longterm) <1%
Input requirements 110 - 240 V · 50/60 Hz
Connections board connections via Molex 0.156" KK plugs
Dimensions 150 x 76 x 50 mm
Weight 0.6 kg


ORDER INFORMATION
 Type/Description Part No. Price 
HG2 low pressure mercury lamp 80017485 631.00
HG2 low pressure mercury lamp, pre-aligned for Knauer Fixed Wavelength Monitor A0315 on req.
C430 power supply for HG2 lamps, OEM version 80017411 528.00
All prices are in Euros per piece and are subject to change without further notice.


For further questions, please don't hesitate to contact us.

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Last update January 2017 · Copyright © msscientific Chromatographie-Handel GmbH · All rights reserved