Series 3000MR
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Photohelic® Switch/Gages
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3000MRS
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Combines Differential Pressure Gage with
Low/High Set-points
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Using solid state technology, the Series 3000MR and
3000MRS Photohelic® switch/gages
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Combine the functions of a precise, highly repeatable
differential pressure switch with a large easy-to-read
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analog pressure gage employing the
durable, time-proven Magnehelic® gage
design. Switch setting is easy
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to adjust with large external knobs
on the gage face. Gage reading is unaffected by switch operation will
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indicate accurately even if power is
interrupted. Solid state design now results in greatly reduced size and
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weight. Units can be flush mounted in
4-13/16 (122 mm) hole or surface mounted with hardware supplied.
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3000MR models employ versatile electromechanical relays
with gold over silver contacts ideal for dry circuits.
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For applications requiring high cycle rates, choose
3000MRS models with SPST (N.O.) solid state relays. All
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models provide both low and high limit control and
include 18-inch (45 cm) cable assemblies for electrical
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connections.
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Gage accuracy is +/-2% of full scale and
switch repeatability is +/-1%. Switch deadband is
one pointer width-
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less than 1% of full
scale. Compatible with air and other non-combustible, non-corrosive gases,
they can be
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used in systems with
pressures to 25 psig (1.725 bar). Optional construction is available for use
to either
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35 psig (2.42 bar) or
80 psig (5.51 bar).
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SPECIFICATIONS
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GAGE
SPECIFICATIONS
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Service: Air and non-combustible, compatible gases.
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Wetted Materials: Consult factory.
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Accuracy: +/-2% of full scale (3000-0 +/-3% of full scale). (3000-00
+/-4% of full scale).
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Pressure Limit: -20 Hg. To 25 psig
(-0.677 bar to 1.72 bar). MP option; 35 psig (2.41 bar),
HP option; 80 psig (5.52 bar).
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Temperature Limits: 20 to 120๐F
(-6.67 to 48.9๐C).
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Process Connections: 1/8 female NPT
(duplicated side and back).
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Size: 4 (101.6 mm) dial face, 5 (127 mm) O.D. x 3-1/8 (79.38 mm).
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Weight: 1.8 lb (816 g).
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SWITCH
SPECIFICATIONS 3000MR
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Switch Type: Each setpoint has 1 form C
relays (SPDT).
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Relay Contacts: (Resistive load) 1
form C rated 1.0A @ 30 VDC, 0.3A @ 110 VDC or 0.5A @ 125 VAC
Gold over clad silver suitable for dry
circuits.
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Electrical Connections: 18 (46 cm) cable assembly with 8 conductors. Optional
lengths to 100´ (30.5 m).
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Power Requirements: 24 VDC, regulated
+/-10%.
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Mounting Orientation: Diaphragm in vertical position. Consult factory
for other position orientations.
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Set Point Adjustment: Adjustable knobs on
face.
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Agency Approvals: CE.
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Series
3000MR, 3000MRS Photohelic®
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Model
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Range, MM W.C.
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Minor Divs.
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3000(MR)(MRS)-6MM*
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0-6
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.20
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3000(MR)(MRS)-10MM
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0-10
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.50
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3000(MR)(MRS)-25MM
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0-25
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.50
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3000(MR)(MRS)-50MM
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0-50
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1.0
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3000(MR)(MRS)-100MM
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0-100
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2.0
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* +/-3% of full scale.
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