The instrument is designed and manufactured completely according to  requirements of the test standard of ASTM IP.Trace sample diluted with diluent  is heated to 60℃ by metal bath under precise temperature control,H2S in  sample is released,then with clean air as the carrier gas,H2S is carried to  measuring cell with electro-chemical sensor,instant concentration of H2S is  measured .The air flow is measured and controlled by the digital quality  flow meter.When the H2S in the sample is fully released, the instrument  will automatically calculate the cumulative concentration of H2S.  

ASTM D7621 ISO 8217 IP 570 

Measuring range:0-250mg/kg H2S  

Working temperature:15-30℃，RH80%  

Viscosity range:up to 3000mm2 /s  

Detection method:electro-chemical sensor  

Testing time:15min  

Sample Volume:1ml, 2ml, 5ml  (determined by H2S concentration)  

Diluent Volume:20mL  

Voltage:AC220V±10V 50Hz  

Power:300W  

Communication interface:USB  

Size:580×350×280mm (L×W×H)