Conspec's Combination Controller and PID Module offers extremely accurate continuous analysis of VOC's and low level toxics in ppm and sub ppm levels. The PID uses a UV light source; detection chamber and internal sample pump with adjustable flow rate from 40-400 lpm. Response time for the sensor is less than 3 seconds for T90, and 5 seconds for full response to gas concentrations with supplied 5" lead. Hundreds of gases can be measured such as Benzene and chlorinated hydrocarbons utilizing the EPA approved method. A calibration curve is provided to allow calibration to readily available gas standards and using factors to ensure readout on the 2065 controller equal to the desired measured gas. A 4/20mA output or 0-5VDC is standard and additional conditioning on the controller ensures maximum stability, performance and long-term reliability. Perfect for HAZMAT, soil remediation, municipal and petrochemical applications, the CONSPEC PID controller is the most accurate and cost effective PID available on the market today.