Multistep asher

06/01/1997

Mass flow controllers

These new gas flow controllers, with the convenience of local setpoint adjustment, have flow rates from 0-50 liters/min. They provide a 0-50 VDC and a 4-20 mA signal for datalogging, and very low temperature and pressure coefficients make them suitable for use with changing stream temperatures and pressures. Units come fully calibrated for specific gases and include a calibration certificate to NIST-traceable standards. Cole-Palmer Instrument Co., Vernon Hills, IL; ph 800/323-4340.