NEMA 4, IP67 Loop-Powered Field-Mount Process Meter
1.1" 3½ Digits LCD Display; -1999 to 1999
1 V Drop (4 V Drop with Backlight)
HART® Protocol Transparent
Loop-Powered Backlight Standard
Operates from -40 to 75°C
Coarse and Fine Zero & Span Potentiometer Adjustments for Easy Field Scaling
Plastic NEMA 4, IP67 Enclosure
CSA, ATEX and IECEx Certified as Intrinsically Safe
Certified Under Both Class/Division and Zone Systems
Certified for Location in Div 2 Areas without IS barriers
Conformal Coated PCBs for Dust and Humidity Protection
One ½" Conduit Hole (Rear, Top, Bottom or None)
Pipe & Panel Mounting Kits
Stainless Steel Tag Available
The PD685 is an easy to use, loop-powered indicator, certified by CSA, ATEX and IECEx as intrinsically safe. The PD685 carries international certifications under both the Class/Division System and Zone System, and is thereby suitable for use in gas and dust hazardous areas worldwide.
For Division 2 applications where intrinsically safe interfaces are not needed, the PD685 is able to be installed without barriers! To achieve this ability, the PD685 underwent a special ‘nonarcing assessment’ under the UL 121201 and CSA C22.2 No. 213 standards, and was determined to be a device incapable of causing an ignition on its own.
The PD685 is wellsuited for both indoor and outdoor applications and carries a variety of environmental ratings, including NEMA 4, Type 4X and IP67.