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Dwyer Mark II Model 25 Inclined Manometer, 3" WC

Dwyer  |   Mfr# MARK II 25  |   Item# EW-68062-58

$36.00 USD/EACH

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  • Pressure measurement for stationary and portable applications
  • ±3% accuracy
  • Gauge fluid included
Inclined liquid manometers are capable of pressure measurements above and below atmospheric as well as differential pressure measurements, and are economically priced, compact and available in both stationary and portable configurations. Construction is simple with virtually indestructible molded white styrene-acrylonitrile housing, indicating tube and fluid wells, molded ABS knobs and zero adjust plunger, shock mounted glass level vial and leak proof 'O' ring seals. These manometers are very easy to use - simply fill the reservoir, adjust fluid level to zero, connect the tubing, and the gauge is ready for operation.


Curved inclined-vertical tube of model 68062-58 provides higher ranges with more easily read increments at low readings and is excellent for general purpose use.
What's Included:
Red gauge oil

This item is considered a hazardous material.Please note: there may be additional shipping restrictions like freight collect or no priority air service, extra freight charges may apply. This item(s) may be restricted from shipping to a residential address, sold to private individuals or exported from the United States. For additional information or questions please call us at 1-800-323-4340 (US) or 847-549-7600 (International).
Product Type Manometer
Media compatibility air and non-combustible gases
Range 0 to 3.0" H2O
Max pressure (psi) 10
Process connection 3/16" barb
Liquid fill red oil, 0.826 specific gravity
Accuracy ±3% full-scale
Model MARK II 25
Brand Dwyer
Manufacturer number MARK II 25

Accessories
Qty/Price
Availability

at $15.00 USD/EACH

In stock.

at $47.00 USD/EACH

Usually ships in 6 days.
Calibrations
Qty/Price
Availability

at $145.00 USD/EACH
Usually ships in 6 days.




Technical Resources
  • Instruction Manual
  • Virtual Catalog (PDFs)
  • Catalog - Spanish
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    Questions and Answers

    Do you have questions about this product?

    get answers from real customers and in-house experts with AnswerBox.

    9 Questions | 10 Answers
    Displaying questions 1-9
    • Q:

      Where do I get the 1/8" connection for the ends of the supplied plastic tubing?
      Asked on 10/21/2011 by Anonymous

      1 answer

      • STAFF EXPERT

        A:

        The replacement brass fitting can be ordered as 00284EK. They are sold as each, so you will want to order two to fully replace the fittings on the manometer.

        Answered on 10/25/2011 by Jack from Technical Support
    • Q:

      Is there any chance the liquid can get drawn into the air stream, if the suction pressure goes too high, or is there something built in to prevent this?
      Asked on 5/24/2011 by Dave from Toronto ON

      1 answer

      • STAFF EXPERT

        A:

        In order to help you more efficiently, please contact our technical application specialists for additional assistance (contact information can be found on the product web page).

        Answered on 5/27/2011 by Chris from Technical Support
    • Q:

      I find the instruction very vauge to say the least, could you please explain better as to how the hose ends are supposed to be situated, do I need some 1/8 pipe ends ???
      Asked on 4/22/2011 by lost in instal from mankato MN

      1 answer

      • STAFF EXPERT

        A:

        At the HVAC ductwork you do need bulkhead adapters to connect to both sides of the air filter in question. At the manometer you connect the two pieces of tubing to the appropriate fitting on the back side of the unit.

        Answered on 4/25/2011 by Jon from Technical Support
    • Q:

      Is there an installation instructions for this product? Can you install this in a drywall to moniter negative airflow? If so do you have a illustration of that installation.
      Asked on 3/29/2011 by Anonymous

      1 answer

      • STAFF EXPERT

        A:

        Complete installation instructions are provided with each manometer; it can be mounted on any vertical surface including drywall.

        Answered on 3/30/2011 by Jon from Technical Support
    • Q:

      Is the mark 2 model 25 capable of reading in. of vacuum . I want to use it to sync.my two TBI's on my corvette.
      Asked on 2/4/2011 by maddy from CA

      2 answers

      • STAFF EXPERT

        A:

        No, this unit will only read in inches of water.

        Answered on 2/8/2011 by Mike from Tech Support
      • A:

        The answer provided by Mike is hilarious!
        If it is a differential manometer it can measure pressure or vacuum, in inches of water, of course.
        The Model 25 might have enough sensitivity for the purpose you suggest.
        MeanRoy

        Answered on 7/13/2011 by MeanRoy from Santa Clara Ca.
    • Q:

      How do I dispose of a Dwyer Manometer Model 25?
      Asked on 1/14/2011 by Anonymous

      1 answer

      • STAFF EXPERT

        A:

        This unit does not contain any hazardous materials and can be disposed of in the normal garbage.

        Answered on 1/17/2011 by Mike from Tech Support
    • Q:

      Wold this unit be suitable for measuring the restriction in a furnace air filter to determine when it should be changed?
      Asked on 1/13/2011 by Anonymous from Jefferson, Ohio

      1 answer

      • STAFF EXPERT

        A:

        Yes, this unit is commonly used for air filter gauge applications.

        Answered on 1/17/2011 by Mike from Tech Support
    • Q:

      I am looking for a device that will monitor air pressure in a clothes dryer duct to provide an indication of when duct cleaning is needed.
      Is the Dwyer Mark II Model 25 suitable for this use?
      Do you have any other suggestions?
      Asked on 11/17/2010 by Ken from Toronto, ON

      1 answer

      • Staff Reviewer

        A:

        I suggest using this unit. I am not familiar with another unit that would be more appropriate for your application. Each Mark II manometer includes two tubing connectors for 1/8˝ pipe or sheet metal ducts, two mounting screws, 3/4 oz. bottle of indicating fluid, red and green pointer flags, 8´ of double column tubing and instructions.

        Answered on 11/19/2010 by Jen from Technical Support
    • Q:

      #1 Does the indicating oil come with it ?
      #2 Does this device need re calibrated with each use ?
      #3 How does the user re-calibrate the device ?
      Asked on 12/8/2009 by smokeyCityTeacher from Pittsburgh

      1 answer

      • STAFF EXPERT

        A:

        Each Mark II manometer includes two tubing connectors for 1/8˝ pipe or sheet metal ducts, two mounting screws, 3/4 oz. bottle
        of indicating fluid, red and green pointer flags, 8´ of double column tubing and instructions.
        There is not a regular calibration done after each use. However the following is recommended for maintenance: check oil level regularly and adjust zero with zero adjust knob. Be sure tubing connections are disconnected and gauge is open to atmosphere before adjusting zero. Clean with mild soap and water. Avoid any cleaning fluids which may result in damaging the gauge.

        Answered on 12/11/2009 by Jaime from Technical Support
    Displaying questions 1-9

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    Product Reviews

    REVIEW SNAPSHOT®

    by PowerReviews
    Dwyer Mark II Model 25 Inclined Manometer, 3" WC
     
    4.6

    (based on 5 reviews)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Easy to use (5)
    • Accurate (4)
    • Well calibrated (4)
    • Works properly (4)
    • Durable (3)

    Cons

      Best Uses

      • In the field (3)

      Reviewed by 5 customers

      Sort by

      Displaying reviews 1-5

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      5.0

      I would buy this product again

      By tom the farmer

      from Cooperstown new york

      Pros

      • Accurate
      • Durable
      • Easy To Use
      • Well Calibrated
      • Works Properly

      Cons

        Best Uses

          Comments about Dwyer Mark II Model 25 Inclined Manometer, 3" WC:

          The gage is simple to install.and easey to use

           
          4.0

          Good wood/coal draft meter.

          By Mcgills443

          from Chateaugay, NY

          Verified Buyer

          Pros

          • Accurate
          • Durable
          • Easy To Use
          • Well Calibrated
          • Works Properly

          Cons

            Best Uses

            • Adjusting chimney draft
            • In The Field

            Comments about Dwyer Mark II Model 25 Inclined Manometer, 3" WC:

            I use the Dwyer Mark II Model 25 to adjust the chimney draft for burning wood,and coal. I own a Harman Trident sf-260 coal,wood boiler with a vogelzang 6" baro metric damper.Works very well.

             
            5.0

            Nice gauge for checking draft

            By Mike

            from Connecticut

            Verified Buyer

            Pros

            • Easy To Use

            Cons

            • None yet

            Best Uses

            • Inline with my coal stove

            Comments about Dwyer Mark II Model 25 Inclined Manometer, 3" WC:

            Use it inline with a barometric damper to set the draft

            (1 of 1 customers found this review helpful)

             
            4.0

            Exactly what I expected

            By Gene the Machine

            from Glenmoore, PA

            Verified Buyer

            Pros

            • Accurate
            • Durable
            • Easy To Use
            • Well Calibrated
            • Works Properly

            Cons

              Best Uses

              • In The Field

              Comments about Dwyer Mark II Model 25 Inclined Manometer, 3" WC:

              Exactly what I expected at a reasonable price. Only suggestion is to make it clear that indicating oil comes with the model. I was unsure by the item description.

              (3 of 3 customers found this review helpful)

               
              5.0

              Set up goes well

              By Grizzly

              from Chaumont, NY

              Verified Buyer

              Pros

              • Accurate
              • Easy To Use
              • Instructions are clear
              • Well Calibrated
              • Works Properly

              Cons

                Best Uses

                • Home heating
                • In The Field

                Comments about Dwyer Mark II Model 25 Inclined Manometer, 3" WC:

                Using manometer to adjust and monitor barometric damper on coal stove chimney.

                Displaying reviews 1-5

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