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The CANNON DVR 1000 Series Digital Vacuum Regulators are designed for precise measurement and control of vacuum at 300 mm Hg below atmospheric pressure. Unlike other vacuum regulators, the solid-state DVR-1000 and DVR-1500 models use no mercury.
The DVR meter displays the amount of vacuum in mm/Hg or one of nine other units of measurement selected using a keypad on the meter.
In asphalt laboratories the Digital Vacuum Regulator (DVR) may be used in conjunction with Cannon-Manning, Asphalt Institute, and Modified Koppers vacuum viscometers for measurement of highly viscous materials such as asphalt cement at 60°C (140°F) according to ASTM D 2171. The DVR is also useful in other laboratory systems where accurate measurement and control of vacuum is required.
Two basic versions of the DVR are available. The DVR-1500 is equipped with an internal vacuum pump and does not require an external vacuum source. The DVR-1000 uses the customer’s in-house vacuum system.
The internal set points for the instrument gauge are preset at CANNON to regulate vacuum at 300 ± 0.5 mm Hg below atmospheric pressure (the vacuum required by ASTM D 2171). These set points may be altered to fit the user’s specific needs within the DVR’s operating range of 28 to 410 mm Hg below atmospheric pressure.
Both the DVR-1000 and DVR-1500 are available in either horizontal or vertical configurations (the horizontal version will support the weight of a constant temperature bath like the CANNON CT-1000 or CT-2000).
The instrument housing is made of durable enameled steel and is supported on non-slip rubber feet.
DVR 1000 Series Specifications
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Dimensions:
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470 mm wide x 458 mm deep x
172 mm high (18.5 x 18 x 6.75 inches)
[in the horizontal position] |
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Weight:
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20 kg (45 lbs) |
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Range:
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Preset at 300 mm Hg below atmospheric pressure, but may be adjusted to accurately control from 28 mm to 410 mm Hg below atmospheric pressure |
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Reading Accuracy:
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± 0.05% of reading ± the least significant digit (includes combined effects of linearity, repeatability, hysteresis, and temperature) [NIST certification is supplied] |
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Vacuum Regulation
Accuracy:
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± 0.5 mm Hg (as required by
ASTM D 2171) |
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Operating Temperature:
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0 to 40°C (32 to 104°F) |
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Upper/Lower Safety Limit:
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746 mm Hg below atmospheric pressure |
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DVR 1000 Series Order Information
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Catalog # |
Item Description |
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9726-T20 |
DVR-1000H (DVR without vacuum pump, horizontal orientation, 120V, 100 watts) |
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9726-T23 |
DVR-1000HF (DVR without vacuum pump, horizontal orientation, 240V, 100 watts) |
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9726-T25 |
DVR-1000V (DVR without vacuum pump, vertical orientation, 120V, 100 watts) |
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9726-T27 |
DVR-1000VF (DVR without vacuum pump, vertical orientation, 240V, 100 watts) |
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9726-T60 |
DVR-1500H (DVR with vacuum pump, horizontal orientation, 120V, 175 watts) |
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9726-T63 |
DVR-1500HF (DVR with vacuum pump, horizontal orientation, 240V, 175 watts) |
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9726-T65 |
DVR-1500V (DVR with vacuum pump, vertical orientation, 120V, 175 watts) |
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9726-T67 |
DVR-1500VF (DVR with vacuum pump, vertical orientation, 240V, 175 watts) |
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