Perform tests from the cab of your truck with the Ralston Field Gauge LC20 with Bluetooth.

Ralston Field Gauge LC20 with Bluetooth is a reference-grade data logging pressure gauge that gives you the freedom to monitor and log pressure from a safe distance, even in dangerous or difficult-to-reach areas. Use the FieldLab Mobile App to initiate pressure logging and monitor readings remotely from your phone or tablet from up to 30 m (100 ft) away.

Accuracy and Efficiency? Precisely.

With ± 0.1% full span accuracy and available working pressure ranges from 5 psi to 30,000 psi, the Bluetooth-equipped Field Gauge LC20 models improve efficiency and accuracy through on-board pressure logging, reducing the risk of human error and eliminating the need for manual data entry. The included FieldLab Mobile App lets you control and monitor multiple gauges at the same time, in real time, and easily share pressure data over email, network drives, or text message.

Works Wherever You Do

Built for the field, the LC20 model has a durable and power-saving design that can log for days on end with common AA batteries. Control the logging interval and duration from the FieldLab Mobile App. Simple units selection of all standard engineering units for pressure as well as custom units with the help of the included FieldLab Desktop Windows software.


  • Pressure calibration, measuring, and monitoring
  • Remote pressure monitoring in dangerous or hard-to-reach places
  • Hydrostatic testing

Ralston Field Gauge LC20 with Bluetooth FAQ

How many gauges can you connect at once?

15 gauges can be connected at once

How do you calibrate the LC20?

FieldLab Desktop Software

What kind of batteries?

AA Batteries

What kind of power can it use?

AC Power, USB cable multiple country standards are included in the box

Can you adjust power settings like Backlight and On Time?

Yes, you can adjust settings with the FieldLab Desktop software.

Backlight time, Damping, Adding and removing engineering units, creating custom engineering units.

How Much Does the FieldLab Desktop Software Cost?

The FieldLab Desktop software is free. You can download it here.

Is it safe for hazardous locations?

The LC20 is not rated for hazardous locations. For a gauge that is rated for hazardous locations, look up the FieldLab Gauge.

How do you control someone unauthorized from stopping a test via Bluetooth?

To stop a test via Bluetooth, you would have to be paired to the gauge before starting the test. You can pair new apps to the gauge while a test is conducted.

Is traceability information on the data set?

Yes. The reference model, serial number, and last calibration date will be on the data set.

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