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The Vacuum Research Diaphragm Manometers are compact vacuum measurement and control instruments. The sensors are available with either 316 SS or pure silicon diaphragms and any sensor can measure liquid or gas pressure as well as vacuum.

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Response time is less than 400 milliseconds for full scale and sensors are available with a variety of flanges including 15 mm, VCR, and KF-16. With any sensor, these instruments offer the precision and high resolution of digital electronics at the same price as analog instruments. Both indicator and controllers are provided in 1/4 DIN or standard cylindrical enclosures.

The 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 the set point pressures. Relays have 3 Amp contacts, SPDT, and have screw terminal connectors on the rear of the instruments.

For applications that require maximum resolution a special display unit is available with a 4 1/2 place LED display. To specify this feature add to the part number "HI-RES" suffix and add $192.00 to the price.

Features:

• 1 to 1500 Torr Range; ± 1 Torr Resolution
• ± 0.1 Torr Resolution Available as Option
• Available in 1 to 2000 mbar & 0.1 to 200 kPa
• 316 S.S. Diaphragm Measures Gas Or Liquid
• Dual Set Point Controller With 2 Relays
• Easy To Read Large Backlit Digital Display
• Linear 0 to 1.5 VDC Output; 4-20 mA Optional
• Fast Response; Less Than 400 mSec. Full Scale

Specifications:

• Pressure Range: 1 to 1500 Torr; ± 1 Torr (± 0.1 Torr optional).
• Calibration: Any gas, liquid or vacuum compatible with sensor materials.
• Accuracy: 1% of reading or 2 Torr.
• Response Time: Less than 400 msec. for response to a step change.
• Linearity: ± 0.15% Full Scale. Sensitivity: ± 1 Torr.
• Analog Output: 0 to 1.500 Volt 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 1.500 Volt D.C. available for instruments in 1/4 DIN enclosure.
• Transducer: See "ordering Information" below for list of transducers.
• Materials: All parts in contact with process are 316 or 304 SS, or silicon.
• Set Point Range: Full Scale, 1 to 1500 Torr. Repeatability: ± 2 Torr.
• Sensor Internal Volume: 1.25 ml for SS; 0.5 ml for Silicon.
• Line Regulation: ± 20% change in line voltage produces less than 1% change in reading.
• Line Power: 115 VAC, 50/60 Hz; 230 VAC optional at no additional cost.
• Wattage: Less than 1 Watt for indicator; 2 Watts for controller.
• Temperature Effects: When changes occur in ambient temperature between 0 oC and 50 oC, reading will change no more than ±0.02% per oC.
• Bakeout Temperature: Gauge tube can be baked to 100 oC (212 oF) in air or vacuum.
• Dimensions: DIN enclosure: 92X92 mm panel cutout, 122 mm F to B.
• Standard enclosure: 2.75 in. diameter panel cutout, 4.8 in. F to B.
• Mounting: Panel mounting hardware is standard. Bench mount and portable cabinets are also available, see page 43.
• Transducer Cables: 10 ft. (3m) attached.
• Extension Cables: Change sensor cable length without recalibration. Extensions to 500 ft. (150m) can be used. See page 42.
• Line Cord: 3 wire, 65 inch (170 cm) attached.
• Net Weight: Indicator 1 lb., 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. (1.3 kg)

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