The Teledyne Hastings Instruments’ DAVC (Digital AVC) is a microprocessorbased vacuum gauge. In addition to the linear analog outputs (0-1 VDC, 0-5 VDC, 0-10 VDC, 4-20 mA, or 0-20 mA), pressure measurements can be accessed via the RS232 digital output. Digital readings can be provided in either Torr, mbar, or Pascal units. A precision A/D converter, along with the microprocessor, measures the thermocouple vacuum gauge tube’s output and converts the measurement to a pressure reading employing the gauge tube’s well-defined output/ pressure function. The DAVC is a continuous-reading instrument for vacuum measurement and process control applications. The instrument is packaged in a small aluminum case with controls and electrical “D” connector located on the top. For Complete instructions on how to use this Digital AVC Controller see .pdf's to the left at Downloads.

Teledyne-Hastings DV-6 gauge tubes use a rugged, but sensitive noble metal thermocouple and corrosion resistant stainless steel and nickel plated components. They are temperature and temperature change-rate compensated, making them well suited for ambient installations. Standard DV-6 gauge tubes are rated for a maximum temperature of 100° C. Ruggedized gauge tubes are rated for 150° C.

Thermocouple sensors (thermal conductivity gauges) rely on the fact that the ability of a gas to conduct heat decreases with pressure. In this type of gauge, a wire filament is heated by running current through it. A thermocouple or Resistance Temperature Detector (RTD) can then be used to measure the temperature of the filament. This temperature is dependent on the rate at which the filament loses heat to the surrounding gas, and therefore on the thermal conductivity.

The Teledyne Hastings Instruments DV-6 thermocouple gauges have a reputation built upon exceptional stability, accuracy, and reliability under the most demanding conditions. DV-6 thermocouple gauge tube sensors are used in a wide variety of applications such as glove boxes, cryogenics, vacuum furnaces, pharmaceutical production, freeze drying, agricultural processes, air conditioning, thermal food containers, plasma coating, refrigeration (HVAC), accelerators, appliance manufacturing and many others.