ASME B40.100 PDF

Must be ASME B compliant. 9. The manufacturer is to provide a 5 year product warranty. Pressure gauges to be Winters P3S Series or approved. Buy ASME B Pressure Gauges and Gauge Attachments (B – ) from SAI Global. Buy ASME B (R) PRESSURE GAUGES AND GAUGE ATTACHMENTS from SAI Global.

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This housing is used on diaphragm seals with replaceable diaphragms. It should not be assumed that every test or safety procedure or method, precaution, equipment, or n40.100 is contained in this Appendix, or that abnormal or unusual circumstances may not warrant suggesting further requirements or additional b04.100. The first installation may involve pressure pulsation that has expended most of the gauge life, resulting in early fatigue in the second installation.

The gauge shall then be placed in a temperature test chamber at a lower temperature [e. Numerals shall be sufficient in number to enable the operator to accurately and quickly identify any pressure on the scale. The lower housing includes a threaded connection for attachment to the process line see Fig.

A device that minimizes the possibility amse an instrument turning after installation on the diaphragm seal.

The diaphragm should be flexed gently using a finger or pencil eraser on the process side to asmee the air bubbles.

Installation of the gauge should be accomplished by tightening the pressure connection using the wrench flats if provided. DO NOT interchange gauges from one gas application to another. The result could be immediate failure, or a large upscale error.

ASME B Archives – Impact Industrial Sales

When expressed as a percentage of span, the error shall not exceed the limits in Table assme for the applicable grade of accuracy. In many instances, requirements for b40.1000, construction, and use of gauges for these applications are specified by state or federal agencies or Underwriters Laboratories, Inc.

This error is caused by internal case pressure changes and depends on fill media, extent of fill, and other factors. The frequency of such testing will depend on their demonstrated ability to retain accuracy 21 5. C-2 and C-3 shall be supplied unless otherwise specified and shall include the threaded end, union nut, tail piece, and O-ring.


The need to recalibrate the instrument with the seal attached will depend on the range, and also the desired accuracy. The three basic classifications are as follows: The test gauge has an accuracy significantly better than the device being tested.

Repeatability does not include hysteresis or friction error.

This device is intended to keep the medium out of the pressure b40100 assembly. The consequences of incompatibility can range from contamination to explosive failure. Several methods may be employed to fasten the upper, mid, and lower housing together. DO NOT install a low pressure gauge into adme high pressure port on a regulator. The maximum outside diameter of the flush mounting rings shall overlap the panel hole by no more than 0.

These fluids must be avoided where strong oxidizing agents are involved including, but not limited to, oxygen, chlorine, nitric acid, and hydrogen peroxide. One example of the many different types in common use is asne in Fig. For countrywe recommend our corporate website. Upon installation, the diaphragm seal is sandwiched between the process flange and a standard blind flange. A snubber restrictor may reduce the magnitude of the pressure transmitted to the elastic element.

1082 Test Gauge

This sag may be prevented by attaching a low pressure source to the process side of the seal to support the diaphragm. Under these conditions the air expands, over-filling the limited volume within the sealed system, causing inaccurate pressure measurements and frequently distorting metal diaphragms.

Receiver gauge dials shall indicate the input pressure range of the gauge. May 15, The next edition of this Standard is scheduled for publication in The following is a list of positive gauge pressure: Neither ASME nor the B40 Committee assumes responsibility for the effects of observance or nonobservance of recommendations made herein.

Ranges Vacuum 30″ Hg Pressure from 15 psi 1 bar to 20, psi 1, bar all ranges not available in 0. To do this, select the desired language using the flag symbol. Asmme accuracy for the compressed portion of the scale may be substantially different. Release pressure and allow gauge to stabilize. By continuing to use it, you agree to their use. Temperature-compensated gauges shall be tested at several ambient temperatures within the compensated range.


No leakage is permitted. A positive error denotes that the indicated value is greater asmee the true value see also correction. Corrosion of the diaphragm, lower and mid-housings, gaskets, and other parts wetted by the medium in the first installation may be sufficient to cause early failure in the second installation.

Bourdon Tube Pressure Gauge

Table C-2 shows the ranges and range designators for negative vacuum pressure gauges. It is generally accepted that a solid front case per para. Test for accuracy in accordance with para.

The index pointer shall be a nonreflective red and shall be set off-scale prior to delivery. Participation by federal agency representative s or person s affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard. It is the difference between any two readings taken after tapping, at the same pressure, approached from the same direction, and in the two pressure cycles, expressed in percentage of span. These assemblies can be filled as a unit using the procedures described in para.

Specific applications for pressure gauges exist where hazards are known. Peak-to-Peak Exploratory Test 0. Safety considerations are discussed in section 4.

The purpose of this device is to prevent damage from corrosion or clogging, to maintain sanitary requirements of the medium or to reduce the process temperature to which the pressure element assembly is exposed.