Differential pressure monitors
Accustat and Accustat P-1 room-to-room differential pressure monitors are suited for applications that require negative or positive monitoring in controlled environments. The stationary Accustat features an on/off key switch with an optional negative/positive key switch. The portable Accustat P-1 has built-in NiCad rechargeable batteries, which provide 10 hours of monitoring from a single charge, according to the manufacturer. Both units offer LCD readout and positive or negative pressure readings to 0.001 inch WG.