Dwyer Instruments Inc 
Series 3000MR 
Photohelic Differential Pressure Switch/Gage




Range: 0-5 Inches of water 
Series: 3000MR




Using solid state technology, the Series 3000MR Photohelic switch/gage combines 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 413⁄16˝ (122 mm)
hole or surface mounted with hardware supplied. 3000MR models employ versatile electromechanical relays with 
gold over silver contacts ideal for dry circuits. All models provide both low and high limit control and include 18-inch 
(45 cm) cable assemblies for electrical connections.



Power Supply: 24VDC Regulated
Contact Rating: 1A @ 30 VDC, 0.3A @ 110 VDC, 0.5A @ 125 VAC 


SPECIFICATIONS

GAGE SPECIFICATIONS
Service: Air and non-combustible, compatible gases.
Wetted Materials: Consult Factory.
Accuracy: ±2% of full scale (3000-0 ±3% of full scale).
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).
Temperature Limits: 20 to 120°F. (-6.67 to 48.9°C).
Process Connections: 1/8 female NPT (duplicated side and back).
Size: 4˝ (101.6 mm) dial face, 5˝ (127mm) O.D. x 3-1/8˝ (79.38 mm).
Weight: 1.8 Ib., (816 g).

SWITCH SPECIFICATIONS 3000MR
Switch Type: Each setpoint has 1 Form C relay (SPDT).
Relay Contacts: (resistive load) 1 Form C rated 1.0 amp @ 30 VDC, 0.3 amp @ 110 VDC or 0.5 amp @ 125 VAC. Gold over clad silver - suitable for dry circuits.
Electrical Connections: 18˝ (46 cm) cable assembly with 8 conductors. Optional lengths to 100´ (30.5 m).
Power Requirements: 24 VDC, regulated ± 10%.
Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations.
Set Point Adjustment: Adjustable knobs on face


Semiconductor Store Spare. 



Pull from: 
CS Clean System CS195DC 
CLEANSORB Dry Bed Absorber
Specialized for the safe handling and neutralization of hazardous gases
in semiconductor manufacturing and industrial processes.



WE BUY AND SALE SURPLUS store spares / liquidation / store clearance / dead stock etc, commonly 
SEMICONDUCTOR AND WAFER MANUFACTURING PARTS of Ebara / VARIAN / LAM Research / Tokyo Electron 
/ Applied Materials / ASM, Etch / CMP, CVD, IMP.


Have some marks and scratches due to old stock. 


© All the pictures are Organic and this part is physically in our stock.





Condition and Details:

This is a used item in good condition.
Not In the Original Packing
No Accessories / Cables or probe (only what showing in actually given pictures and in the description).




Old Stock.






Shipping:
Usually, we ship same business day, subject to clear funds into our account 
Standard order processing time is 2 business days 
Item will be packed as per International Standard, 
International Orders: DHL / SingPost / EMS 
 

* Expedited shipping is available for an extra fee.
* International buyers pay all custom, duties, taxes & brokerage fees at their end
 
Warranty and Returns:
Warranty:

30 DAYS Money Back or Replacement, buyer pays return shipping


Product Returns:

Returns:
Return 
to Base Warranty, Any type of power failure/burn / physical damage / tempered seal will void the warranty.
 







Payment:
Payment Methods:

PayPal
Credit Cards  
Wire-transfer: Kindly contact us for payment instructions

International buyers without PayPal: Kindly contact us before bidding
                          
About Us:
We deal in Semiconductor & Wafer Handling Parts/Components/machinery and types of equipment. A Verity of Industrial Automation Equipment and Parts.

Industrial PCs, PLCs, HMI, Controllers, and Sensors.
Industrial robotics, Data Acquisition, and Test & Measurement.  
Industrial Single Board Computers.
Marine Parts / Equipments.
Oil & Gas and offshore station.
Lab and Research Equipments.

We Source, We Refurbish, We Service and We also Repair …please contact for any further detailed inquiries.