Frequently Asked Questions

Working with Ashcroft

Are you new to working with Ashcroft or considering working with us? If so, you may have some questions or concerns. Here are the most frequently asked questions so you can learn how Ashcroft can help you.

Why should I choose Ashcroft over a lower-priced option?

I’m overwhelmed by the options; how do I find the right product for my application?

Will I receive application assistance regardless of my project’s size?

Does Ashcroft provide custom solutions if a standard product doesn’t fit my requirements?

Ashcroft is well known for pressure gauges, but are the other products of the same quality?

Pressure Gauge

Does Ashcroft offer custom dials on gauges?

What is the difference between the proof pressure and burst pressure?

What types of accuracy does Ashcroft offer for pressure gauges?

Please explain 3-2-3% accuracy.

I’m looking for a pressure gauge, but all I know is the dial size, range, and connection size. How can I find the gauge I need?

Do you offer a spare parts list?

Does PLUS!™ Performance affect accuracy?

How do you select the pressure range of a gauge?

How often does a gauge need to be calibrated?

What if my application sees severe pressure fluctuation or pulsation?

Does Ashcroft have NACE compliant instruments?

Can Ashcroft’s® 2.5/3.5″ 1009 and 63/100mm 1008S gauges be liquid filled in the field?

What are the available cleaning options for Ashcroft® 1032 Sanitary Pressure gauge?

Are Ashcroft Duragauge® movements repairable/replaceable?

Does Ashcroft offer any pressure gauges that can be used to measure pressure underwater?

What is the gauge storage and shelf life for Ashcroft® gauges?

Can Ashcroft attach a diaphragm seal to models 1187, 1188, and 1189 low pressure bellows gauges?

Can PLUS!™ Performance be used in paint applications or other applications where no silicone is indicated?

Can PLUS!™ Performance gauges be oxygen cleaned?

How do I order PLUS!™ Performance?

Does the throttle plug do all the work with a PLUS!™ Performance gauge?

Does Ashcroft have gauges suitable for ammonia applications?

Does Ashcroft offer Receiver and False Reading gauges?

Does Ashcroft recommend user repair/reconditioning gauges?

Can I order non-standard ranges for digital gauges?

Do Ashcroft digital gauges come with a calibration certificate?

Do you sell digital gauge field replacement parts?

On my digital gauge can I rescale my 4-20mA output for these units?

How do I wire my current or voltage output Digital Gauge?

My Model DG25 digits are flashing. Is it broken?

My digital gauge is flashing, won’t zero and may/may not be reading pressure. (OVER, UNDER, O/P, U/P)

What is the difference between a loop powered digital gauge model 2174, and a line powered digital gauge model 2274?

Can I move the decimal point on my digital gauge?

How is coding of manifold and gauge affected when attaching?

I want my digital gauge to read in another engineering unit other than PSI. Can I do that?

How do I reset my password on my digital gauge?

Can a diaphragm seal be used on Ashcroft’s® model 1490?

Pressure Sensor

Does Ashcroft have a two-wire pressure transmitter?

Can my transducer be recalibrated?

How do I determine which model Ashcroft® transducer to purchase with so many models to choose from?

Do you offer anything that could read/display the pressure of the transducer?

My transducer is hooked up and not providing any signal. What do I do?

Can the display be rotated on the GC51 for mounting the gauge on its side or upside down?

The transducer is labeled as Ashcroft, but I cannot locate the model number printed on the label on either the Ashcroft website or through an internet search?

The Installation and Maintenance manual says that I need to hook up two or three wires, so why did my transducer come with four wires?

I need a transducer with a non-standard (positive pressure) calibration. Is that something Ashcroft can do?

Can Ashcroft non-standard calibrate in the vacuum scale?

Do the GC30 or GC31 products replace any current Ashcroft® products?

Can I buy connectors and cable harnesses for my transducers?

How does the user adjust the pressure switch settings, analog output scaling, range, etc. of the GC30/31?

The GC30/31 pressure sensors are 3-in-1 products (Digital pressure gauge, pressure transducer, pressure switch). Does the customer have to use all three in order for the product to operate?

Does Ashcroft offer a freeze-proof remedy for Ashcroft® pressure transducers?

Can the GC30/31 be ordered with a NIST Calibration Cert?

Is the XRH option available on the 0.25% accuracy CXLdp?

What types of electrical terminations does Ashcroft offer for their transducer products?

Pressure Switch

Does Ashcroft offer a pressure switch with a DPDT switch?

Where within the operating pressure range can I set the setpoint of my pressure switch?

What is deadband (Hysteresis) in regards to a pressure switch?

What is the difference between proof and burst pressure?

What is the accuracy or repeatability of a pressure switch?

Can Ashcroft® switches be cleaned for Gaseous Oxygen Service?

What does explosion proof mean?

What does static pressure mean?

What is a setpoint?

Does Ashcroft offer a UL Listed and FM approved medium pressure Gas and Oil Limit Control Switch?

Does Ashcroft offer a UL Listed Steam Limit Control Switch?

Does Ashcroft offer a sanitary pressure switch option?

Can a diaphragm seal be used on a switch?

Are Ashcroft pressure and temperature switches intrinsically safe?

Diaphragm Seal

Can a diaphragm seal be used on a switch?

Can I reuse a diaphragm seal if the instrument goes bad and needs replacing? What do I have to do to do this?

What are the flange rating conversions to PSI ratings?

Can you use Teflon® diaphragm material with Bromine, Chlorine, and Fluorine?

What fill fluid must be used on diaphragm seals to be used on chlorine applications?

What type of diaphragm seal fill fluids does Ashcroft offer for high temperatures?

What Ashcroft® instruments are not available with diaphragm seals?

When do you use a diaphragm seal vs. an isolation ring?

When is a diaphragm seal used?

Can a diaphragm seal be used on Ashcroft’s® model 1490?

Does Ashcroft recommend using a dampening device with a diaphragm seal?


Are there other scales and dial options for the HPX pressure gauges?

Are there other pressure connections available on the ZT/ZX pressure transmitters?

How are the Ashcroft high purity products packaged?


What is the purpose of dampening devices, and what are the types?

When should a siphon be used?


Can you do custom lengths on thermometers and thermowells?

What Information is needed to run a Wake Frequency calculation of a thermowell?

What is the difference between NPSM and NPT instrument connection threads?

What is a lag on a thermowell?

Thermowells, what are they?


Can you do custom lengths on thermometers and thermowells?

What is the difference between NPSM and NPT instrument connection threads?

What is the IP rating for a Duratemp® Thermometer?

Can custom line lengths be obtained on remote mounted thermometers?

What cable lengths are available for the electric contacts?

Can safety glass be used on a liquid filled Bimetal Thermometer?

Do Ashcroft® Bimetal Thermometers contain mercury?

Are CRN numbers available for Bimetal Thermometers?

General Product Information

Why is manufacturing/packing high-purity instruments in a cleanroom important?

Can I have a VCR connection on (insert instrument/accessory here)

How do I identify what product I have? Customers sometimes call with serial numbers. What do serial numbers tell you?

Contact Ashcroft

Ashcroft is a trusted source for pressure, temperature, and test instruments around the world. Learn more about how we can help you protect your people, processes, and profits.

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