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These compact vacuum measurement and control instruments offer the precision and high resolution of digital electronics at the same price as analog instruments. Our extremely rugged sensor is constructed with a solid, inert, noble metal that maintains its calibration over long periods. Because no gold is used, these gauges are compatible with both mercury and oil pumps. The low 125 oC operating temperatures in our Pirani type gauge tube (half that of thermopile gauges), enhances stability as does a unique temperature compensation network. Gauge tubes are matched and can be replaced without recalibration, and they can withstand working pressures to 300 psi, tested to 1200 psi.

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Features:

• 1 to 2000 mTorr Range (~ 0 to 2 mm Hg)
• Available in .001 to 2.000 mbar or .1 to 200.0 Pa
• ± 1 mT Resolution Over Entire Range
• Easy To Read 3 1/2 Digit Liquid Crystal Display
• Dual Set Point Controller With 2 Relays
• Linear 0 to 2.0 VDC Output; 4-20 mA Optional
• Change Cable Length Without Re-calibrating
• Fits Hastings, Varian, TeleVac Panel Cut-Outs

The Vacuum Research Dual Set Point Controller operates two control relays. Set point values are adjusted from the front panel and displayed on the meter. Push-to-set switches simplify display of set point pressures. Relays have 3 Amp contacts, form C, and have screw terminal connectors on the rear of the instruments.

Both the indicator and the controller instruments are available in either 1/4 DIN or 2.75 inch diameter standard enclosures. The 2.75 inch diameter standard enclosure fits the same panel cut out as Hastings, Varian, Televac and other analog meters. Mounting hardware is included with both styles.

Specifications:

• Pressure Range: 1 to 2000 milliTorr (~ 0 to 2 mmHg.)
• Calibration: Air or Nitrogen.
• Accuracy: Better than 5% of value or ± 3 mTorr, whichever is larger.
• Response Time: 0.3 second time constant.
• Display: 3 1/2 Digit Liquid Crystal Display
• Analog Output: 0 to 2.000 Volts into 2000 Ohm load or higher. 2 pin connector
• included. 4 to 20 mA and 0 to 10 VDC output in addition to 0 to
• 2.000 Volt D.C. available for instruments in 1/4 DIN enclosure.
• Gauge Tube: Standard gauge tubes have a 1/8 NPT male thread or fit
• into quick connects sized for 1/8 inch pipe (0.405" dia.) KF, VCR and Mini
• Conflat® available.
• Set Point Range: Full Scale, 1 to 2000 mTorr; Repeatability: ± 2 mTorr.
• Line Power: 115 VAC, 50/60 Hz; 230 VAC optional at no additional cost.
• Line Regulation: ± 20% change in line voltage produces less than 1%
• change in reading.
• Wattage: Less than 1 Watt for indicator, 2 Watts for controller.
• Temperature Effects: Changes in ambient temperature between 0 oC
• and 50 oC change the reading less than 0.2 mT per oC at 50 mT; less
• than 4 mT per oC at 900 mT.
• Bakeout Temperature: Standard gauge tube can be baked to 100 oC
• (212 oF) in air or vacuum. For 250 oC (482 oF) bakeout see facing page.
• Dimensions: See page 44.
• Mounting: Panel mounting is standard. Bench mount and portable cabinets
• are also available, see page 43 for complete specifications.
• Gauge Tube Cables: 10 ft. (3 m) attached.
• Extension Cables: Change gauge tube cable length without recalibration.
• Extensions to 500 ft. (150 m) can be used. See page 42.
• Line Cord: 3 wire, 65 inch (170 cm) attached.
• Net Weight: Indicator: 1 lbs., 2 oz. (0.5 kg); Controller: 1 lb, 6 oz. (0.6 kg)
• Shipping Wt.: Indicator: 2 lbs., 8 oz. (1.1 kg); Controller: 3 lbs. (1.4 kg)

Please click on the links to the right, request a quote or contact Vacuum Research today for more information!