Connect the correct thermal probe to your Field Gauge

Detachable thermal probes are not interchangeable with other Field Gauges. Each temperature probe is calibrated precisely to the Field Gauge it ships with at Ralston Instruments' ISO/IEC 17025:2017 Accredited lab. 

To log temperature data to the highest possible accuracy, you must reconnect each thermal probe to the gauge it was lab-calibrated & certified with.

At the end of the job, it is common practice to disassemble equipment and pack it safely for storage and transport, including removing thermal probes from Field Gauges. Having multiple Field Gauges with temperature probes in your team's tool arsenal is also common. Because they all look identical, re-pairing probes with the correct gauges can quickly get confusing.

How to match a temperature probe to the Field Gauge it was calibrated and shipped with

Find the serial number of the probe that matches your gauge.

Power on the Field Gauge.

Press and hold the Menu/Up-Arrow button until the word MENU appears.

Tap the Backlight/Right-Arrow button to scroll through the menu options until the text PROBE SN appears.

Press the Zero/Checkmark button to select that menu item.

The bottom row of digits is the serial number for the corresponding temperature probe.

Identify the matching serial number on the temperature probe.

It is the seven-digit number listed below the product number.

Connect the probe displaying the etched serial number that matches the s.n. displayed on the Field Gauge screen to the temperature sensor port on that device.

• Related Articles

• Pair a new temperature probe

  How to pair a replacement temperature probe with a Ralston Gauge Note: These instructions apply only to replacement temperature probes manufactured by Ralston Instruments. Temperature Probe product information page: PT100 IEC Class A RTD Probe with ...

• Quick-Start Guide and User Manual for Field Gauge LC10

  Download in PDF format below.

• Calibrate the pressure sensor on a Field Gauge and Process Meter

  Do-it-yourself instructions for calibrating a Ralston digital gauge with the free FieldLab Desktop software. At the end of this process, FieldLab Desktop will automatically make any necessary adjustments to bring your Ralston gauge to acceptable ...

• Overview Video Field Gauge LC20

  Field Gauge LC20 basic operation and features overview.

• Replace Batteries in a Field Gauge LC20

  Power off the gauge. Remove the four screws from the back of the gauge with a 2mm hex key/Allen wrench or Phillips-head screwdriver. Older models shipped with hexagonal sockets, newer models ship with Phillips-head screws. Remove the back panel. ...

• Recent Articles

• Look Up Lead Time and Pricing for a Ralston Product

  Go to ralstoninst.com Sign in to your Ralston account Select "Look Up Pricing and Lead Time by Model Number" Enter the model number of the Ralston product View the search results For each model number in your search results, info will be provided ...

• Download Current Price List

  Get current pricing for all Ralston products Price lists are available in PDF, XLS, and CSV formats. All file formats include the following fields: Product Family (e.g. "NPT Male Quick-test Adapters) Part Number (e.g. "QTHA-2MS1") Description MSRP ...

• View Invoices

  Go to ralstoninst.com Sign in to your Ralston account Select "Invoices" from the navigation list on the left side of the page View Invoices Search or Sort Invoices Make a Payment Learn how to make a credit card or ACH payment

• Make an ACH Payment on your Ralston Account

  Go to ralstoninst.com Sign in to your Ralston account Select the Make Payment button Select invoices to pay 1. Select one or more invoices. 2. Select the Continue button. Select Payment Method 1. Select an existing payment method OR 2. Add a new ...

• Install Quick-test Hose on a Ralston Hose Reel