HVG-2020B: Choosing the Right Analog Output Signal for You

The HVG-2020B wide range, dual sensor vacuum gauge takes measurement to the next level. With a Piezo based sensor and a thermal based Pirani sensor, it accurately and confidently measures pressures across seven decades. The Piezo sensor is media isolated, gas composition independent, and periodically zeroed by the Pirani sensor. An ambient thermal sensor enables the instrument to adjust for temperature and therefore better accuracy.

The HVG-2020B offers multiple linear and logarithmic analog output signal options.

Why do you think we offer so many logarithmic output options?

The linear output may not always be useful. Remember: the HVG-2020B is a wide range gauge that covers seven (7) decades of vacuum. That’s a huge range to cover with a linear output signal!

For example, if you are using 0 – 10 VDC Linear Output:

• At 1000 Torr, the output will be 10 VDC
• At 760 Torr, output will be 7.60 VDC
• But at 1 mTorr, voltage output will only be: 0.00001 VDC

We offer the logarithmic output options to provide better resolution throughout the curve.

Our default output option (recommended option) is the Logarithmic Option (08): 2 – 9 VDC (1 VDC / decade)

If you read Voltage (V), you can quickly calculate Pressure (P):

P = 10^{(V_out - 6)}

Complete linear and logarithmic output options for the HVG-2020B include:

There are analog output signal options to match most common pirani vacuum gauge outputs as well as a non-linear curve based on convection style vacuum gauges. It is also possible to generate a custom user-defined logarithmic output (see section 5.2.8 of the manual).

In addition, the HVG-2020B offers an optional color touchscreen display, free Windows data acquisition software, and a variety of digital communication paths that make the HVG-2020B flexible and user friendly. Whether you need USB, RS 232, RS 485, linear or log outputs, graphical displays for data acquisition logging, this wide range gauge can perform.

You can request the software from our website. Please find the link here: https://www.teledyne-hi.com/resource-center/software

In addition to the windows software, we also have a certified LabVIEW driver.

HVG-2020B Vacuum Gauge LabVIEW Driver – Click Here

As always, we are here to help. If you have any questions about any of our vacuum or flow products, you can reach out to us by phone (800-950-2468/757-723-6531), email (hastings_instruments@teledyne.com), or via LiveChat on our website (www.teledyne-hi.com).

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