Dwyer Instruments MP Mini-Photohelic Installation And Operating Instrictions

LOW PRESSURE
PORT
HIGH PRESSURE
PORT
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The Series MP Mini-Photohelic
sure switch/gage combines the time proven
Minihelic ® II differential pressure gage with two
SPDT switching setpoints. The Mini-Photohelic
designed to measure and control positive, negative,
or differential pressures consisting of non-com-
bustible and non-corrosive gases. Gage reading is
independent of switch operation. Switching status is
visible by LED indicators located on the front and
rear of the gage.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.
Series MP Mini-Photohelic
Differential Pressure Switch/Gage
Specifications - Installation and Operating Instructions
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SPECIFICATIONS
GAGE SPECIFICATIONS
Service: Air and non-combustible, compatible gases.
Wetted Materials: Consult factory.
Accuracy: +/- 5% of full scale @ 70°F (21.1°C). Gage
face mounted in vertical position.
Pressure Limits: 30 psig (2.067 bar).
Temperature Limits: 20 to 120ºF (-6.7 to 49°C).
Process Connections: Barbed for 3/16˝ I.D. tubing
(STD); 1/8˝ male NPT (optional).
Size: 4-1/8˝ (104.78 mm) depth x 3-1/16˝ (77.79 mm)
diameter.
Weight: 23 oz (652 g).
SWITCH SPECIFICATIONS
Switch Type: (2) SPDT relays.
Electrical Rating: 5A @ 120/240 VAC Resistive; 5A @
®
is
30 VDC.
Electrical Connections: Screw Type Terminal Block.
Accepts 22-12 AWG wire.
Power Requirements: 24 VDC / 24 VAC 50/60 Hz 4
watts.
Mounting Orientation: Gage face in vertical position.
Set Point Adjustment: Push Buttons.
Standard Accessories: (2) mounting screws, (1) .050˝
hex allen wrench.
Agency Approvals: UL, cUL.
Phone: 219/879-8000
Fax: 219/872-9057
Bulletin B-37-A
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www.dwyer-inst.com
1.800.868.7495
.ca
e-mail: info@dwyer-inst.com