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Series 3000SGT
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Photohelic® Pressure
Switch/Gage
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With Integral Transmitter
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Indicating Gage, Low
and High Limit Control, 4-20 mA Transmitter
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The Series 3000SGT Photohelic® Switch/Gage/Transmitter combines several
critical control
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functions into a single, easy-to-install package. This
versatile instrument starts with the universally
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accepted standard for reliable low air pressure
measurement, the Dwyer®
Magnehelic®
Gage. It
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measures positive, negative or differential pressures
within +/-2% of full scale accuracy. This time-
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proven
component provides highly reliable analog indication of air or compatible gas
pressure on a
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4”,
80๐ scale. Gage operation is completely
independent-functions normally even if power is interrupted
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to electrical elements of the control.
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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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Temperature Limits: 20 to 120๐F (-6.67 to 48.9๐C).
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Process Connections: 1/8” female NPT.
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Size: 4” (101.6 mm) dial face, 5” (127
mm) O.D. x 8-1/4” (209.55 mm).
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Weight: 3 lb, 14.5 oz (1.77
kg).
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SWITCH SPECIFICATIONS
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Switch Type: Each set point has 2
Form C relays (DPDT).
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Repeatability: +/-1% of full scale.
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Electrical Rating: 10A @ 24 VDC or 120 VAC, 6A @ 240 VAC.
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Electrical Connections: Screw terminals.
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Power Requirements: 120 VAC, +/-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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TRANSMITTER SPECIFICATIONS
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Temperature Limits: 20 to 120๐F (-6.67 to 48.9๐C).
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Thermal Effects: +/-0.025% F.S./ ๐F (0.045% F.S./ ๐C).
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Power Requirements: 10.0 to 35 VDC
(2-wire).
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Output Signal: 4-20 mA DC.
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Zero & Span Adjustment: Multi-tum potentiometers, internally accessible.
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Response Time: 250 mSec.
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Loop Resistance: 0- 1250 ohms.
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Current Consumption: 38 mA DC, maximum.
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Electrical Connections: Terminal block.
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Warm-up Time: 10 minutes.
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Model
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Range
In. w.c.
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Maximum
Pressure
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Electrical
Accuracy +/-%
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Mechanical
Accuracy +/-%
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3000SGT-0
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0-0.5
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25
psi (1.7 bar)
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2
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3
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3001SGT
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0-1.0
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25
psi (1.7 bar)
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2
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2
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3002SGT
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0-2.0
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5
psi (34.5 kPa)
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0.5
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2
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3003SGT
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0-3.0
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5
psi (34.5 kPa)
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0.5
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2
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3006SGT
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0-6.0
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5
psi (34.5 kPa)
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0.5
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2
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3010SGT
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0-10
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5
psi (34.5 kPa)
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0.5
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2
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3020SGT
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0-20
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10
psi (69 kPa)
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0.5
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2
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3030SGT
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0-30
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10
psi (69 kPa)
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0.5
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2
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3000SGT-250PA
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0-250
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25
psi (1.7 bar)
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2
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2
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3000SGT-500PA
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0-500
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5
psi (34.5 kPa)
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0.5
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2
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Model
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Range,
Kilopascal
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3000SGT-1.5KPA
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0-1.5
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5
psi (34.5 kPa)
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0.5
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2
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