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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Liquid-filled cases may be either open front or solid front types. If no resonance is asm, the test shall be in accordance with Table A The pressure gauge shall be mounted not less than 3 in.
Never allow oil or grease to come into contact with any external or internal part of the threaded fitting or internal portion of the pressure element assembly of oxygen gauges. The supplier should be consulted for assistance if required.
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The elastic element is generally a thin-walled member, which of necessity operates under high stress conditions and must, therefore, be carefully selected for compatibility with the medium being b40.010. Table C-9 lists the four possible connection locations. These test methods may or may not satisfy the requirements of the intended application. For a given temperature condition, correction can be made by calculating the approximate error at each applied pressure value and adding it to or subtracting it from b40.00 indicated value.
The user should consult with the supplier regarding the degree of protection required see aame 4. Scale shown is retarded from 10 to In addition to its effect on the gauge movement and linkage, see para. Numerals shall not extend beyond the calibrated portion of the scale.
Approved revisions will be published periodically. The accuracy classification of a temperature-compensated gauge is established by the magnitude of the largest error encountered when the gauge is tested over its entire rated service temperature range.
The pressure connection shall be sealed to prevent penetration into the elastic element. Open socket hole to 1?
Such failures are usually more critical with compressed gas media than with liquid media. The three basic classifications are as follows: These fluids must be avoided where strong oxidizing agents n40.100, but not limited to, oxygen, chlorine, nitric acid, b400.100 hydrogen peroxide are involved. It does not include diaphragm actuated pressure instruments that employ mechanical linkages to transmit the applied pressure or other separation devices designed to protect the pressure element assembly.
The standards are vehicles by which the Committee as a body can transmit to users the benefits of their combined knowledge and experience as regards the proper and safe use of pressure gauges. The process connections are as follows: For material recommendations see CGA B40.100 At the conclusion of the test, accuracy aame be in accordance with para.
They shall not obscure or crowd graduations or important markings. The change in stiffness of a material with change in temperature is the thermoelastic coefficient TEC of the material. Refer to section 4, Safety.
The gauge shall then be allowed to stabilize at room temperature and then be checked for accuracy, in accordance with para.
This is why we consider ourselves to be not just suppliers of asm components but rather more a competent partner that offers comprehensive solutions in close co-operation with our customers — customised and precisely designed products for the exact requirement. The closing pressure is adjustable and should be set to close above the full scale range of the pressure gauge and below the rated limit of the elastic element.
These drawings are b40.1000 intended to show design detail. A resonance may occur in an internal part of the gauge, with no outward manifestation. Temperature-compensated gauges shall be tested at several ambient temperatures within the compensated range.
The gauge shall then be checked for accuracy at this temperature, in accordance with para.
The user should inform the supplier of all conditions pertinent to the application and environment so that the supplier can recommend the most suitable gauge for the application. DO NOT use the gauge case for wrenching. Normal calibrating position is upright and vertical. Violent effects are also produced when failure occurs due to a hydrogen embrittlement b contamination of a compressed gas c formation of acetylides d weakening of soft solder joints by steam or other heat sources 18 e weakening of soft soldered or silver brazed joints caused by heat sources such as fires f corrosion g fatigue h mechanical shock i excessive vibration Failure in a compressed gas system can be expected to produce violent effects.
A gauge designed to indicate oxygen pressure. This 48 hr cycle shall be repeated four times for a total of five complete cycles. Dials shall be designed to resist damage from corrosion. Failures during pressure testing are unpredictable and may cause parts to be propelled in any direction.
Acceptable performance specifications shall be agreed to by the supplier and user. Wetted parts shall be nickelcopper alloys. Select a reference gauge with a full scale pressure rating above the rupture pressure of the gauge under test to avoid damaging the reference gauge. For gauges used to measure gas pressures of psi 2 kPa and higher and liquid pressures of 1, psi 7 kPa and higher, cases with pressure relief means are recommended. Where application questions arise, these factors should be considered and discussed by the user and supplier.
The ring is mounted between the diaphragm seal and the process flange.
Two gauges of each design, size, range, and elastic element style shall be subjected to the qualification inspection. Is it possible to comply the same pressure gauge’s design and accuracy with above two different codes? The mid-housing cleanout ring is located between the upper and lower housing.