Piezo-Pirani Vacuum Gauge HVG-2020B
The HVG-2020B vacuum gauge features two sensors, a piezo-based transducer and a thermal-based Pirani sensor, in a single small package. The Piezo is used at higher pressures, above 10 Torr, is media-isolated and is also gas composition independent.
The Pirani sensor is a precision welded hot-wire thermal sensor that measures pressures below 1 Torr. An ambient thermal sensor enables the instrument to make adjustments for temperature which in turn enables better accuracy throughout the pressure range of the instrument (0.1 mTorr to 1000 Torr). Between 1 and 10 Torr, a weighted average between the two sensors is used to determine the pressure. The HVG-2020B also features cross-calibration. In short, the low pressure Pirani is able to periodically zero the piezo sensor which gives the user superior accuracy performance.
The HVG-2020B is easy to install, and the optional display provides the user with several different views, or modes of operation. It is very flexible and can provide both analog and digital output to easily integrate into process control. A wide variety of analog output signals may be selected. This makes the HVG-2020B an excellent choice to replace more expensive capacitance manometers.
Free Windows data acquisition software for data logging is available for the HVG-2020B.
Piezo Vacuum Gauge HVG-2020A
The HVG-2020A vacuum gauge is a media-isolated, gas composition independent, piezo-resistive instrument that provides accurate pressure measurement throughout the rough vacuum region. Unlike thermal based vacuum gauges, the HVG-2020A directly measures the pressure in the system. It does not infer the pressure by measuring the thermal conductivity of the gas. This means that the readings do not depend on the type of gas being used.
The HVG-2020A is easy to install, and the optional display provides the user with several different views, or modes of operation. The “Pressure versus Time” Mode allows the user to monitor the pump-down (or vent) of their vacuum system. Rate-of-rise can be viewed and may help to identify the presence of a chamber leak. For users who want another method to see system pressure changes, we provide the “Bar Graph” Mode.
The HVG-2020A is very flexible and can provide both analog and digital output to easily integrate into process control. A wide variety of analog output signals may be selected. Digital output can include RS232 and RS485 via a small jack on the top of the instrument. A USB connection is also available on many models which makes connection and operation very easy.
Free Windows data acquisition software for data logging is available for the HVG-2020A.
Thermocouple Vacuum Gauge Tubes/Sensors
The industry standard for cost-effective vacuum gauges
From refrigeration to vacuum furnaces, from freeze drying to pharmaceutical production, the DV-Series thermocouple gauge tubes operate under the most demanding conditions or rugged environments and are the economical solutions to most low and medium vacuum pressure measurements and control needs.
HPM 4/5/6 Portable Vacuum Meter
The Teledyne Hastings Instruments’ HPM 4/5/6 is a hand-held, battery-operated digital vacuum gauge. Its reputation has been built on exceptional stability, accuracy, and reliability under the most demanding conditions.
The HPM 4/5/6 features a precision A/D converter along with a microprocessor to measure the thermocouple vacuum gauge tube’s signal output. The microprocessor converts the measurement to a pressure reading by employing the gauge tube’s well-defined output/pressure relationship. The result is displayed using a bright, easy-to-read graphical display.
The HPM 4/5/6 works with three of THI’s most popular gauge tube families: DV-4 (0.1 – 20 Torr), DV-5 (0.1 – 100 mTorr) and DV-6 (1 – 1000 mTorr). Tubes are matched and interchangeable without calibration adjustments.
Gauge Tubes and Reference Tubes are sold separately.
DAVC Digital Active Vacuum Controller with Linear Output
The Digital AVC (DAVC) is a microprocessor controlled vacuum gauge meter without readout. It works with Hastings DV-4, (0.1 – 20 Torr), DV‐5 (0.1 – 100 mTorr), and DV‐6 (1 – 1000 mTorr) Series Vacuum Gauge Tubes.
The instrument is packaged in a small aluminum case with controls and electrical 9 Pin D-sub connector mounted on the top cover.
The DAVC includes several enhanced features which makes it an attractive solution for many vacuum control automation applications. It can provide linear analog output (voltage or current) for integration of vacuum measurement with a PLC or other data acquisition system. In addition, the DAVC provides RS232 communication for direct connection of the instrument to a computer. Digital readings can be provided in either Torr, mbar, or Pascal units.
The device is easy to use and installs anywhere.
Applications and Industries
- Semiconductor Process
- Cryogenic Tank
- Plasma Coating
- Load Lock
- Vacuum Furnaces
- Refrigeration / HVAC
- Transformer Oil Processing
- Cryogenics/Vacuum Insulation
- Freeze Drying
- Pharmaceutical Production
- Glove Boxes
- Appliance Manufacturing
- Lighting Manufacturing
- Particle Accelerators
- Laser Systems
- Chemical Research
- Air Sampling
- Central Vacuum Monitoring
- Medical Research
- Vacuum Metallurgy
- Thin Film Coating
- Refrigeration & Air-Conditioning