VM-3000.pdf  Size : 1MB

 


     

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Measuring principle:  UV-Absorption 
Wavelength:  253.7 nm 
UV source:  electrodeless low-pressure mercury lamp 
Stabilization method:  reference beam feedback lamp control method and thermal stabilisation
Optical cell:  fused silica (Suprasil), 23 cm long 
Optical cell heating:  approx. 50°C 
Measuring range:  lowest range: 0.1...100 µg/m³ (0.01-10 ppb)
highest range: 0...2000 mg/m³ (0-200 ppb)
Sensitivity:  0.1 µg/m³ (0,01 ppb)
Response time (99% signal):  < 1 second 
Computation of mean value:  automatically via three freely selectable times 
Alarm:  when concentration is exceeded, 3 levels programmable 
Status alarms:  measuring cell soiled, battery state, UV source 
Control pad:  waterproof membrane keypad 
Measurement Display:  graphical LC display with background illumination 
Signal outputs:  4...20 mA for recorder; 
RS 232 bidirectional for PC, data logger etc.; 
parallel for printer 
Pump:  membrane pump, approx. 2 L / min 
Filter:  PTFE, 1 µ, 47-50 mm diameter 
Power Supply:  230 V / 50 Hz (115 V / 60 Hz option) 
Battery operation:  external 12 DC source; optional 12 V batteries integrated, ca. 5h capacity 
Power consumption:  30 VA  
Dimensions:  45 x 15 x 35 cm (WxHxD) 
Weight:  approx. 7 kg 

 

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