Combines Differential Pressure Gage with Low/High Set-points
Using solid state technology, the Series 3000MR and 3000MRS
Photohelic® switch/gages
combine the functions of a precise, highly repeatable differential
pressure switch with a large easy-to-read analog pressure gage employing
the durable,
time-proven Magnehelic® gage design. Switch setting is easy
to adjust with large external knobs on the gage face. Gage reading
is unaffected by switch operation - will indicate accurately even if
power is interrupted. Solid state design now results in greatly reduced
size
and weight. Units can be flush mounted in 4-13/16" (122 mm) hole or surface
mounted with hardware supplied. 3000MR models employ versatile electromechanical
relays with gold over silver contacts - ideal for dry circuits. For
applications requiring high cycle rates, choose 3000MRS models with
SPST (N.O.) solid
state relays. All models provide both low and high limit control and
include 18-inch (45 cm) cable assemblies for electrical connections.
Gage accuracy is ±2% of full scale and switch repeatability
is ±1%. Switch deadband is one pointer width - less than 1%
of full scale. Compatible with air and other non-combustible, non-corrosive
gases, they can be used in systems with pressures to 25 psig (1.725
bar). Optional construction is available for use to either 35 psig
(2.42 bar) or 80 psig (5.51 bar).
Included Accessories: mounting ring, snap ring; 18" (45 cm) cable assembly; (2) 3/16" tubing to 1/8" NPT adapters; (2) 1/8" NPT pipe plugs; (4) 6-32 x 1-1/4" RH machine screws (panel mounting); and (3) 6-32 x 5/16" RH machine screws (surface mounting).