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  • Home
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  • Stationary
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    Calibration Services
    1. DEMO 1
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    5. DEMO 5
    Pressure
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    3. DEMO 3
    4. DEMO 4
    5. DEMO 5
    Air Quality
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    Air Velocity
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    3. DEMO 3
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    5. DEMO 5
    Flow
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    3. DEMO 3
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    5. DEMO 5
    Level
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    3. DEMO 3
    4. DEMO 4
    5. DEMO 5
    Temperature
    1. DEMO 1
    2. DEMO 2
    3. DEMO 3
    4. DEMO 4
    5. DEMO 5
    Test Equipment
    1. DEMO 1
    2. DEMO 2
    3. DEMO 3
    4. DEMO 4
    5. DEMO 5
    Valves
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    2. DEMO 2
    3. DEMO 3
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    5. DEMO 5
    Miscellaneous
    1. DEMO 1
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    Hazardous Rated
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    Series 200 & 300
    Suitable for Total Pressures Up to 100 psig, Temperatures Up to 150°F, Accuracy ±2% of Full Scale (1% on Models 215, 244, 246 Only) Durablock® Solid Plastic Stationary Gage offered in inclined and vertical styles for highly accurate laboratory.
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    Series 1230/1235
    No Moving Parts, Suitable for Laboratory or General Industry Flex-Tube® Well-Type Manometers as a wall mount or a panel mount. Accurately reads high pressure readings. Applications include laboratory and industrial service applications.
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    Series 1227
    0.2" Minor Scale Divisions, Low-Cost Pressure Indication Dual Range Flex-Tube® U-Inclined Manometer where no spirit level is required, the manometer is versatile, and it is useful low-cost. Applications include fan status and filter monitoring.
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    Series 1211/1212
    Safety Traps to Prevent Loss of Fluid Slack Tube® Manometer/Gas Pressure Kit that reads with inch or CM scale. Applications include filter monitoring and duct static pressure.
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    Series 250-AF
    Precision Machined, Solid Acrylic Plastic Gages, Accurate To ±1% Of Full Scale Inclined Manometer Air Filter Gages are virtually unbreakable and free of distortion. Applications include air filter gage.
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    Series Mark II
    3% Accuracy for Stationary and Portable Applications Molded Plastic Manometers are of the inclined and inclined-vertical type. Applications include paint booths, air filter gage, and air velocity measurement.
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    Series 100
    Suitable for Total Pressures Up to 100 psig, Temperatures Up to 150°F, Accuracy ±2% of Full Scale (1% on Model 115 Only) Durablock® Solid Plastic Portable Gage is a precision instrument in inclined and vertical styles. Used for the measurement of static pressure, vacuum or differential pressure.
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    Series 420
    Accuracy to ±0.25% Durablock® Inclined-Vertical Manometer is an inclined-vertical manometer which is applied to low pressure laboratory and test applications.
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    Series 1221/1222/1223
    Suitable for Pressures up to 100 psi, Better Precision Flex-Tube® U-Tube Manometer read in inches or mm. Scales are high impact polystyrene plastic. Applications include duct static pressure, calibration, and filter monitoring.
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    • Most Popular
    • Questions

    Most Popular

    Series Mark II
    Series 1221/1222/1223
    Series 1211/1212
    Series 1227

    Questions

    Question
    Why doesn't 1 inch on the scale of a 1223-12-D manometer equal 1 inch on a ruler?
    Answer
    The calibration scale on the manometer has been compensated for the specific gravity of red gage fluid which is less than water.
    Related
    Series 1221/1222/1223
    Question
    Since water will not mix with oil, why can't a D-style manometer be used to measure water pressures?
    Answer
    The weight of the water itself is also being measured which results in erroneous readings.
    Related
    Series 1221/1222/1223
    Question
    What are the principle advantages of red gage fluid over water for use in manometers?
    Answer
    Red gage fluid is slow to evaporate, won't freeze, is more readable and produces slightly expanded scales for better reading resolution.
    Related
    Series 420
    Series 100 AV
    Series 1227
    Series 100
    Series 1221/1222/1223
    Question
    Will the water manometers freeze?
    Answer
    Yes, if the temperature drops below 32 degrees Fahrenheit, the fluid in the manometer will freeze. The fluid used in "W/M" style manometers is water-based with a small amount of fluorescent green fluid to enhance the meniscus. The other gage fluids have a lower freezing point, however, it is recommended that the manometers be stored above 32 degrees Fahrenheit.
    Related
    Series 1227
    Series 1230/1235
    Series 1221/1222/1223
    Question
    Is routine maintenance required for a Dwyer red gage fluid type manometer?
    Answer
    Yes. The zero point should be checked periodically as well as the fluid level. After a year of service, particularly with dirty air, the fluid should be replaced to assure that specific gravity changes are not affecting the accuracy of the reading.
    Related
    Series 1227
    Series Mark II
    Series 1230/1235
    Series 100
    Series 250-AF
    Series 420
    Series 200 & 300
    Series 1221/1222/1223
    Series 100 AV
    Series 400
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