---
title: Ashcroft's Blog | Oil & Gas
description: Oil & Gas | The Ashcroft blog provides helpful information about pressure and temperature instruments. Gain the knowledge you need to keep your business running!
---

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 Temperature Instruments

- [Thermometers](https://www.ashcroft.com/products/temperature/thermometers)
- [Thermowells](https://www.ashcroft.com/products/temperature/thermowells)
- [Temperature Switches](https://www.ashcroft.com/products/temperature/temperature-switches)
- [RTDs](https://www.ashcroft.com/products/temperature/rtds)
- [Thermocouples](https://www.ashcroft.com/products/temperature/thermocouples)
- [Temperature Transmitters](https://www.ashcroft.com/products/temperature/temperature-transmitters/)
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 Test Instruments

- [Calibrators](https://www.ashcroft.com/products/test-instruments/calibrators/)
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 Products

[Pressure Instruments](https://www.ashcroft.com)

 Pressure Instruments

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[Pressure Sensors (Transducers/Transmitters)](https://www.ashcroft.com/products/pressure/pressure-sensors)

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[Accessories](https://www.ashcroft.com/products/pressure/accessories)

[SMART Transmitter Assemblies](https://www.ashcroft.com/products/pressure/smart-transmitter-assemblies)

[Temperature Instruments](https://www.ashcroft.com)

 Temperature Instruments

[Thermometers](https://www.ashcroft.com/products/temperature/thermometers)

[Thermowells](https://www.ashcroft.com/products/temperature/thermowells)

[Temperature Switches](https://www.ashcroft.com/products/temperature/temperature-switches)

[RTDs](https://www.ashcroft.com/products/temperature/rtds)

[Thermocouples](https://www.ashcroft.com/products/temperature/thermocouples)

[Temperature Transmitters](https://www.ashcroft.com/products/temperature/temperature-transmitters/)

[MultiPoint Temperature Sensors](https://www.ashcroft.com/products/temperature/multipoint-temperature-sensors/)

[OEM Temperature Sensors](https://www.ashcroft.com/products/temperature/oem-temperature-sensors)

[Test Instruments](https://www.impactplus.com)

 Test Instruments

[Calibrators](https://www.ashcroft.com/products/test-instruments/calibrators/)

[Hand Pumps-Controllers](https://www.ashcroft.com/products/test-instruments/hand-pumps-and-controllers/)

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 Helpful Tools

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 Industries

 Industries

[Process Industry Overview](https://www.impactplus.com)

 Process Industry Overview

[Solutions for the Process Industry](https://www.ashcroft.com/solutions/process-industry-instrumentation)

[Large Projects/EPC](https://www.ashcroft.com/solutions/process-industry-instrumentation/engineering-procurement-construction-large-projects/)

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 Process Industry Solutions

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[Oil & Gas](https://www.ashcroft.com/solutions/process-industry-instrumentation/oil-gas-instrumentation/)

[Pharmaceutical & Biotech](https://www.ashcroft.com/solutions/process-industry-instrumentation/pharmaceutical-and-biotechnology-application-solutions/)

[Power](https://www.ashcroft.com/solutions/process-industry-instrumentation/power-plant-instrumentation/)

[Water & Wastewater](https://www.ashcroft.com/solutions/process-industry-instrumentation/instruments-used-in-water-treatment-plant/)

[Industrial/OEM Markets Overview](https://www.impactplus.com)

 Industrial/OEM Markets Overview

[Solutions for Industrial OEM](https://www.ashcroft.com/solutions/industrial-oem/)

[Custom Engineered Solutions (CES)](https://www.ashcroft.com/solutions/industrial-oem-custom-engineered-solutions/)

[Industrial/OEM Markets](https://www.impactplus.com)

 Industrial/OEM Markets

[HVAC/R](https://www.ashcroft.com/solutions/industrial-oem/hvac-refrigeration-equipment/)

[Hydrogen & Alternative Energu](https://www.ashcroft.com/solutions/industrial-oem/hydrogen-alternative-energy/)

[Industrial Equipment Manufacturer](https://www.ashcroft.com/solutions/industrial-oem/industrial-equipment-manufacturer-supplier/)

[Medical Health & Safety](https://www.ashcroft.com/solutions/industrial-oem/medical-biotechnology-instruments/)

[Process Equipment Manufacturer](https://www.ashcroft.com/solutions/industrial-oem/process-equipment-manufacturer/)

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 About

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[Resource Center](https://www.ashcroft.com/learn/resource-center/)/[Ashcroft's Blog](https://blog.ashcroft.com)/Oil & Gas

# Oil & Gas Ashcroft's Blog

<https://blog.ashcroft.com/what-certifications-are-available-for-diaphragm-seal-assemblies>

[water & wastewater](https://blog.ashcroft.com/topic/water-wastewater) | [diaphragm seals](https://blog.ashcroft.com/topic/diaphragm-seals) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas) | [certification](https://blog.ashcroft.com/topic/certification)

## What Certifications are Available for Diaphragm Seal Assemblies?

 January 5th, 2026|5 min read

<https://blog.ashcroft.com/why-material-compatibility-matters-when-replacing-pressure-instrumentation>

[pressure gauge](https://blog.ashcroft.com/topic/pressure-gauge) | [water & wastewater](https://blog.ashcroft.com/topic/water-wastewater) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas) | [Galvanic](https://blog.ashcroft.com/topic/galvanic) | [refineries](https://blog.ashcroft.com/topic/refineries) | [corrosion](https://blog.ashcroft.com/topic/corrosion)

## Why Material Compatibility Matters When Replacing Pressure Instrumentation

 December 15th, 2025|4 min read

<https://blog.ashcroft.com/using-gas-actuated-thermometers>

[thermometer](https://blog.ashcroft.com/topic/thermometer) | [gas-actuated thermometer](https://blog.ashcroft.com/topic/gas-actuated-thermometer) | [Chemical/Petrochemical](https://blog.ashcroft.com/topic/chemical-petrochemical) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas) | [refineries](https://blog.ashcroft.com/topic/refineries)

## When to Use Gas-Actuated Thermometers

 October 8th, 2025|3 min read

<https://blog.ashcroft.com/when-to-use-straight-tapered-or-stepped-thermowells>

[Thermowells](https://blog.ashcroft.com/topic/thermowells) | [Chemical/Petrochemical](https://blog.ashcroft.com/topic/chemical-petrochemical) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas) | [temperature measurement](https://blog.ashcroft.com/topic/temperature-measurement)

## When to Use Straight, Tapered or Stepped Thermowells

 August 18th, 2025|4 min read

<https://blog.ashcroft.com/solid-front-open-front-gauges>

[pressure gauge](https://blog.ashcroft.com/topic/pressure-gauge) | [safety features](https://blog.ashcroft.com/topic/safety-features) | [overpressure](https://blog.ashcroft.com/topic/overpressure) | [Chemical/Petrochemical](https://blog.ashcroft.com/topic/chemical-petrochemical) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas)

## Solid-Front Pressure Gauges vs. Open-Front Pressure Gauges

 July 30th, 2025|3 min read

<https://blog.ashcroft.com/thermocouple-and-rtd-extensions-what-you-need-to-know>

[RTD](https://blog.ashcroft.com/topic/rtd) | [thermocouple](https://blog.ashcroft.com/topic/thermocouple) | [Chemical/Petrochemical](https://blog.ashcroft.com/topic/chemical-petrochemical) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas) | [Industrial Equipment Manufacturer](https://blog.ashcroft.com/topic/industrial-equipment-manufacturer)

## Thermocouple and RTD Lead Wire Extensions: What You Need To Know

 July 21st, 2025|3 min read

<https://blog.ashcroft.com/blog/best-pressure-gauges-for-overpressure-protection>

[Product Selection](https://blog.ashcroft.com/topic/product-selection) | [pressure gauge](https://blog.ashcroft.com/topic/pressure-gauge) | [water & wastewater](https://blog.ashcroft.com/topic/water-wastewater) | [overpressure](https://blog.ashcroft.com/topic/overpressure) | [Chemical/Petrochemical](https://blog.ashcroft.com/topic/chemical-petrochemical) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas)

## Best Pressure Gauges with Overpressure Protection

 July 16th, 2025|3 min read

<https://blog.ashcroft.com/rtd-vs-thermocouple-temperature-sensor>

[RTD](https://blog.ashcroft.com/topic/rtd) | [thermocouple](https://blog.ashcroft.com/topic/thermocouple) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas)

## When to Use an RTD vs. a Thermocouple Temperature Sensor

 July 7th, 2025|3 min read

<https://blog.ashcroft.com/reasons-to-use-diaphragm-seal-isolation-ring>

[water & wastewater](https://blog.ashcroft.com/topic/water-wastewater) | [Pressure Instruments](https://blog.ashcroft.com/topic/pressure-instruments) | [diaphragm seals](https://blog.ashcroft.com/topic/diaphragm-seals) | [Chemical/Petrochemical](https://blog.ashcroft.com/topic/chemical-petrochemical) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas)

## Why Should You Use a Diaphragm Seal or Isolation Ring?

 November 18th, 2024|6 min read

<https://blog.ashcroft.com/grounded-vs-ungrounded-thermocouple-junctions>

[thermocouple](https://blog.ashcroft.com/topic/thermocouple) | [Chemical/Petrochemical](https://blog.ashcroft.com/topic/chemical-petrochemical) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas)

## Grounded vs. Ungrounded Thermocouple Junctions: Why Select One over the Other?

 September 26th, 2024|4 min read

<https://blog.ashcroft.com/why-and-when-is-rtd-calibration-necessary>

[Industries and applications](https://blog.ashcroft.com/topic/industries-and-applications) | [RTD](https://blog.ashcroft.com/topic/rtd) | [temperature sensor](https://blog.ashcroft.com/topic/temperature-sensor) | [accuracy](https://blog.ashcroft.com/topic/accuracy) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas)

## Why and When is RTD Calibration Necessary?

 August 19th, 2024|5 min read

<https://blog.ashcroft.com/gas-actuated-vs-bi-metal-thermometers>

[Bimetal Thermometers](https://blog.ashcroft.com/topic/bimetal-thermometers) | [pharmaceutical and biotechnology](https://blog.ashcroft.com/topic/pharmaceutical-and-biotechnology) | [thermometer](https://blog.ashcroft.com/topic/thermometer) | [gas-actuated thermometer](https://blog.ashcroft.com/topic/gas-actuated-thermometer) | [Chemical/Petrochemical](https://blog.ashcroft.com/topic/chemical-petrochemical) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas) | [Food and Beverage](https://blog.ashcroft.com/topic/food-and-beverage)

## Gas Actuated Thermometer vs. Bimetal Thermometer

 August 12th, 2024|4 min read

## Ready to solve your pressure and temperature challenges?

 Reach out to learn how Ashcroft solutions can keep your business protected and efficient. 

[Contact Us](https://www.ashcroft.com/contact)

<https://blog.ashcroft.com/protecting-instruments-from-corrosion>

[Corrosive](https://blog.ashcroft.com/topic/corrosive) | [water & wastewater](https://blog.ashcroft.com/topic/water-wastewater) | [diaphragm seals](https://blog.ashcroft.com/topic/diaphragm-seals) | [Chemical/Petrochemical](https://blog.ashcroft.com/topic/chemical-petrochemical) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas) | [isolators](https://blog.ashcroft.com/topic/isolators)

## How to protect pressure instruments from different types of corrosion

 July 15th, 2024|5 min read

<https://blog.ashcroft.com/why-how-to-perform-thermocouple-calibration>

[Calibration](https://blog.ashcroft.com/topic/calibration) | [temperature sensor](https://blog.ashcroft.com/topic/temperature-sensor) | [thermocouple](https://blog.ashcroft.com/topic/thermocouple) | [pharmaceutical and biotechnology](https://blog.ashcroft.com/topic/pharmaceutical-and-biotechnology) | [chemical industry](https://blog.ashcroft.com/topic/chemical-industry) | [Chemical/Petrochemical](https://blog.ashcroft.com/topic/chemical-petrochemical) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas) | [Power/Energy](https://blog.ashcroft.com/topic/power-energy)

## How to Perform a Thermocouple Calibration and Why it Matters

 June 26th, 2024|4 min read

<https://blog.ashcroft.com/nace-compliant-pressure-gauges-for-sour-gas-and-crude-oil>

[pressure gauge](https://blog.ashcroft.com/topic/pressure-gauge) | [Pressure Instruments](https://blog.ashcroft.com/topic/pressure-instruments) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas) | [sour gas](https://blog.ashcroft.com/topic/sour-gas)

## Why are NACE-Compliant Pressure Gauges Important For Sour Gas and Crude Oil Applications?

 May 6th, 2024|4 min read

<https://blog.ashcroft.com/what-is-thermocouple-calibration-benefits>

[Calibration](https://blog.ashcroft.com/topic/calibration) | [temperature sensor](https://blog.ashcroft.com/topic/temperature-sensor) | [thermocouple](https://blog.ashcroft.com/topic/thermocouple) | [pharmaceutical and biotechnology](https://blog.ashcroft.com/topic/pharmaceutical-and-biotechnology) | [chemical industry](https://blog.ashcroft.com/topic/chemical-industry) | [Chemical/Petrochemical](https://blog.ashcroft.com/topic/chemical-petrochemical) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas) | [Power/Energy](https://blog.ashcroft.com/topic/power-energy)

## What is Thermocouple Calibration?

 May 1st, 2024|4 min read

<https://blog.ashcroft.com/temperature-effects-pressure-gauges>

[pressure gauge](https://blog.ashcroft.com/topic/pressure-gauge) | [measurement instrument accessories](https://blog.ashcroft.com/topic/measurement-instrument-accessories) | [diaphragm seals](https://blog.ashcroft.com/topic/diaphragm-seals) | [Chemical/Petrochemical](https://blog.ashcroft.com/topic/chemical-petrochemical) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas)

## How Does Temperature Affect Pressure Gauge Performance?

 April 3rd, 2024|4 min read

<https://blog.ashcroft.com/safe-instrumentation-for-acid-applications>

[chemical industry](https://blog.ashcroft.com/topic/chemical-industry) | [acid leak detection](https://blog.ashcroft.com/topic/acid-leak-detection) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas)

## How Do You Select Safe Pressure Instruments for Acid Applications?

 March 27th, 2024|3 min read

<https://blog.ashcroft.com/how-an-rtd-works>

[RTD](https://blog.ashcroft.com/topic/rtd) | [temperature sensor](https://blog.ashcroft.com/topic/temperature-sensor) | [pharmaceutical and biotechnology](https://blog.ashcroft.com/topic/pharmaceutical-and-biotechnology) | [Chemical/Petrochemical](https://blog.ashcroft.com/topic/chemical-petrochemical) | [Oil & Gas](https://blog.ashcroft.com/topic/oil-gas) | [power plants](https://blog.ashcroft.com/topic/power-plants)

## How Does an RTD Work?

 April 17th, 2023|3 min read

[1](https://blog.ashcroft.com/tag/oil-gas/page/1)

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PROCESS INDUSTRY

- [Overview](https://www.ashcroft.com/solutions/process-industry-instrumentation/)
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