LapScope - The Intelligent Field Instrument EM500hl

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EM500hl | Lamp Compatibility | Features | Specifications | Options and Accessories | Ordering Information | PDF

The EM500hl, a linear type power supply, is designed specifically for use with short arc mercury lamps in the 200 to 500 watt range. The  innovative linear design eliminates the concern for high frequency noise propagating to other electronic components. Its superior performance is preferred for demanding research applications.



The Ultimate Short-Arc LPS

Research Grade Performance

The EM500hl features research grade performance - less than 0.1% stability after warm-up. Noise and ripple measure less than 0.05% r.m.s. Line and load regulation is less than 0.1%. This superior performance is the best regulation in the industry; and it extends lamp life and reduces unwanted arc wander. See the Specifications page.

Safety Agency Compliance

The EM500hl is designed to comply with most world safety agency standards. For additional safety, we feature a unique interlock system which addresses numerous safety concerns.

Reliability and Quality Standards

The EM500hl is designed to perform under extreme conditions. Each power supply is burned in at an elevated temperature and line voltage for 24 hours, and is put through an exhaustive quality inspection before being released for shipment. This reliability is backed with our one-year warranty.

Easy to Operate

To operate the EM500hl simply plug in the detachable IEC 320 C-13 power chord to standard ac lines. Plug the lamp fan to the outlet provided and high voltage cables to the appropriate lamp terminals. Set the current control to lamps operating current for example 7.4 Amps for the 500 Watt lamp. Turn power on and wait ten seconds for the preignition voltage to build up, and then press start switch. The lamp will star with light intensity at first low and then brighten as the lamp warms. To facilitate faster warmup the power supply is designed to elevate the lamp current by 50% and then revert to operating lamp current when lamp nearly warms to full power. To shorten warmup time further turn on lamp housing exhaust fan only after lamp becomes bright. The actual lamp current can be monitored on pin 5 and 6 of the remote circular connector. This same connector possesses input pins to control the lamp current with a voltage source or a device such as our optional Optical Intensity Controller as described in the Options and Accessories page.

Our Capabilities

With over three decades of experience in the design and manufacture of instrumentation for analytical chemistry, spectroscopy and spectrophotometry, we understand the requirements necessary to make our products truly research grade. Each unit delivers dependable, high performance allowing you to focus on your results.

If this product isn't quite what you need ask our application engineers for a solution by filling out an Application Request or by calling EMSC dirrectly at 1-203-924-1665. Small modifications to our standard products or custom designs to your specifications are welcome. We provide solutions to your special light requirements.

Need a Solution?

EM500hl | Lamp Compatibility | Features | Specifications | Options and Accessories | Ordering Information |

235 Canal Street, Suite 100
Shelton, CT,  06484, USA
Telephone: 1-203-924-1665
Fax: 1-203-924-1676
Send Email with questions or comments to

Copyright 1998 EMSC, LLC. All rights reserved.
Last modified: March 26, 2007