Mercury Instruments VM-3000 Mercury Monitor

The VM-3000 serves for continuous measurement of mercury concentration in gases in the laboratory, as well as, industry and mobile applications. It has a wide variety of applications, such as workplace monitoring (threshold limit value), exhaust air monitoring in mercury recovery plants, emmission monitoring in the chemical industry, ground air screening of contaminated soil, quality control of hydrogen and natural gas detector for laboratory applications.

Specifications:
Measuring Principle:	UV-Absorption
Wavelength:	254 mm
UV Source:	Electrodeless low-pressure mecury lamp
Stabilization Method:	Double beam (reference beam) method and thermal stabilization
Optical Cell:	Fused silica (Suprasil), 23 cm long
Optical Cell Heating:	Approximately 70°C
Measuring Range:	Lowest range: 0...100 µg/m3 (0-10 ppb) Highest range: 0...2000 mg/m3 (0-200 ppb)
Sensitivity:	0,1 µg/m3 (0,01 ppb)
Resonse Time:	<1 second (99% signal)
Alarm:	When concentration is exceeded, 3 levels programmable
Status Alarm:	Measuring cell soiled, battery state, UV source
Liquid-Gas Separation:	Aerosol-free principle
Pump:	Membrane pump, approx. 2 L/min
Filter:	PTFE, 1 µ, 47-50 mm diameter