Frequently Asked Questions

Yes, Ashcroft offers many options for custom pressure gauge dials. Please view this article or this product information page to learn more.

Proof pressure is the maximum pressure a gauge can withstand without evidence of change in accuracy. Burst pressure is the maximum pressure above which the pressure assembly may no longer hold pressure.

Please refer to our Product Configurator on our website.

A 3-2-3% of span designation stands for 3% in the first quarter of the scale, 2% in the middle half of the scale, and 3% in the last quarter of the scale. This accuracy is typically associated with commercial grade pressure gauges.

You can read this article: How To Identify Your Pressure Gauge and Get the Proper Replacement or use our Product Configurator on our website. You can also reach out to us at [email protected] or by calling 1-800-328-8258.

Ashcroft does not offer a spare parts list; it is recommended that the user stock one complete Ashcroft instrument for every 10 of that instrument type in service.

No. The only difference is that the response time is similar to liquid filled gauges.

The range of the instrument should be approximately twice the maximum operating pressure. Too low a range may result in low life due to fatigue of the elastic element due to high operating stress and susceptibility to overpressure set due to pressure transients that exceed the normal operating pressure. Too high a range may yield insufficient resolution for the application.

This is quite subjective and depends upon the severity of the indicated pressure. The environmental limitations for the pressure gauge series should be observed in all cases. Gauges used in situations outside these requirements may result in inaccuracies, premature wear and/or failure of the gauge and would require additional maintenance. The frequency of calibration, therefore, is best left to the user to determine.

Pressure pulsation can be dampened by several mechanisms; our patented PLUS!^™ Performance gauge will handle the vast majority of applications. One exception to this is high frequency pulsation which is difficult to detect. The only indication may be an upscale zero shift due to movement wear. These applications should be addressed with a liquid filled gauge, or in extreme cases, a remotely mounted liquid filled gauge connected with a line of capillary. The small diameter of the capillary provides excellent dampening, but can get plugged. Pulsation dampeners and snubbers are alternative auxiliary devises which dampen pulsation with fewer tendencies to plug. Also throttle plugs or throttle screws inserted in the pressure connection of the pressure gauge may help solve this problem.

Yes, there are a number of Ashcroft pressure gauges, diaphragm seals, switches, transducers and thermowells that are NACE compliant. See the whole list of compliant products here.

Duralife^® 2½”/3½”1009, 63 mm/100 mm 1008S, and 63 mm 2008S gauges can be liquid filled in the field or at an authorized distributor. Learn more here.

Ashcroft mechanical sanitary gauges, 1032, are available with “free from oil” cleaning requirements to ASME B40.100. The X6B option will allow a 1032 to be cleaned for

gaseous Oxygen service. Learn more here.

We recommend that rebuilding and repairing movements should be not considered and the complete movement and linkage should be replaced with a new Ashcroft movement. Learn more here.

Ashcroft^® 1279 and 1379 liquid filled Duragauge^® pressure gauges with 4 1⁄2” or 6” dial sizes have been tested to measure pressure underwater to depths to 2,250 feet. To order a gauge for this application, the customer must specify the working depth of the gauge so that the pointer can be offset upscale. Learn more here.

Ashcroft gauges should be stored indoors in a clean, dry, well-ventilated area protected from physical damage and shock. Storage temperature should not exceed the temperature limits shown below:

If the instruments are determined to fit and the storage recommendations have been adhered to, Ashcroft® will honor its warranty as detailed in the Ashcroft^® Terms of Sale.

The combination of low pressure and high displacement volume results in a very slow response

time if a flexible line assembly or a capillary line is used between the instrument and the seal. We have, therefore, limited the sale of a diaphragm seal and Types 1187, 1188 and 1189 gauges to only directly connected assemblies. Learn more here.

The standard PLUS!^™ Performance cannot be used in silicone-free applications. However, PLUS!^™ Performance is available in a silicone-free version. Order as XNZ for no silicone.

Yes. You must specify the silicone-free option XNZ along with the XLL PLUS!^™ Performance option. Our process cleans the system to meet ASME B40.100 Level IV.

The product variation “XLL” designates PLUS!™ Performance in all Duragauge^®, 1279, 1377, 1379, 2462, and Duralife^®, 1009, 1008S pressure gauges.

No. Throttle plugs are designed to only fight pressure pulsation. Vibration requires either a liquid filled gauge or a PLUS!™ Performance gauge.

The only acceptable wetted parts material for pressure gauges used in ammonia applications are stainless steel or steel. A gauge with bronze/brass wetted parts is not suitable since ammonia may cause the bronze/brass wetted parts to stress-crack and cause a gauge failure. Ashcroft offers a variety of gauges suitable for ammonia applications. Learn more here.

Yes, but under no conditions will we accept an order for a receiver gauge or a false reading dial without indicating maximum input pressure. Learn more on this PI page.

At times, users may attempt to repair or recondition used pressure gauges. This PI Page highlights the potential dangers to personnel and facilities if a repaired/reconditioned gauge is put into service.

Depends on the product family. Precision: no. Industrial: maybe. DG25: Yes. If range isn’t already set up, there will be a set-up fee for a new range.

Calibration certificates are standard on the model 2089. All other models require the XC4 option at the time of order.

No. The units are too sensitive to encourage anyone other than Ashcroft production to fix. In addition, they may require calibration as part of the repair.

By re-scaling the graph, the 4-20mA can also be re-scaled. Accuracy of the gauge is based on full scale range. Re-scaling the graph does not change the full scale range. Instructions to alter the graph are in the Installation and Maintenance manual – see page 12.

Please reference the Installation and Maintenance guide for your model.

No. The unit is likely in “tare mode”. A short press of the tare button will return the unit to standard measurement mode and read the current pressure.

The unit has most likely been exposed to over or under pressures. As they are not field resettable, they will need to be returned to Ashcroft for evaluation and possible recalibration.

The 2174 is powered by the 4-20mA signal, while the 2274 is powered using a separate power supply. If the model 2274 includes the optional 4-20mA output or switch(s) the output signal and switches will have separate contacts from the power supply.

No, you cannot.

See our instrument assembly guide to learn how to configure/code the products when attached.

Yes, you can. For all digital gauges, pre-programmed units can be accessed through the MENU function. The Model DG25 (only) can also read customer-defined units.

Depends on the software version, it is 1-2-0-4-5 or 1-2-*-4-5.

No. Ashcroft’s^® model 1490 is for gas applications and cannot be attached to diaphragm seals.