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Pressure Calibration with NIST Traceable Standards

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PTC Metrology® peforms NIST Tarceable calibartions accredited by A2LA to ISO/IEC 17025.

Primary Standards

  • Ruska 2400 HL Deadweight Tester from 0.2 to12140 psig with an uncertainty of ±50 parts in 106 .
    Ruska 2465 Pneumantic Deadweight Tester 0.2 to 1000 psia ±10 parts in 106.
    Ruska 2470 Pnuematic Deadweight Tester 0.2 to 3000 psig ±25 parts in 106.

Secondary Standards

  • Vacuum/ Low Pressure GP 275 Thermocouple Gage 0.01 to 1 Torr ±5% I.V.
  • Barometric Pressure Wallace and Teirnan 600 ±5mm Hg.

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Our laboratory has the capabilities to calibrate general purpose gauges, utility, industrial and process gauges, test gauges, pressure recorders and data loggers.

Our certificate number 1896.01 from A2LA also covers calibration of durometers, temperature, *pressure, *relative humidity, and *infrared black body thermometers. Click on the link to view our scope of our accreditation. The ILAC (International Laboratory Accreditation Cooperation) arrangement provides a technical basis to international trade by promoting global member and customer confidence and acceptance of accredited laboratory data.

PTC Instruments offers pressure gauges and pressure data loggers. Contact our sales department for complete specifications.

 
Pressure Calibration Services
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Level 1
Level 2
Level 3
Device Accuracy
(% of Reading)
.05% to <.25%
.25% to 0.5%
0.5% to 4%
Data Points
including as found
Provided
21 points
5 points
Price per gauge
By Quote
$200.00
$75.00
Customer specified
additional points
Selected
Selected
$25.00
Calibration Points
% of full scale
Selected
0%10,20,30,40,50,60,70,80,90,100,
90,80,70,60,50,40,30,20,10,0%
10%,25,50,75 100%
NIST Traceable
A2LA Accredited

 

Relative or Gauge Pressure

Pressure is usually measured, either as absolute pressure (psia), or relative to atmospheric pressure(psig) such measurements are called gauge pressure. An example of this is the air pressure in a car tire, which might be said to be "35 psi," but is actually 35 psi above atmospheric pressure. Since atmospheric pressure at sea level is about 14.7 psia, the absolute pressure in the tire is therefore about 49.7psi.

Atmospheric Pressure

Atmospheric pressure is the pressure exerted by the air around us. The pressure varies both with altitude, and weather patterns. Standard atmospheric pressure at sea level is defined as 1 atmosphere equal to 760 millimeters of mercury (760 Torr) and 101,325 Pascals. 29 117/127 inches of mercury 29.92 inHg 14.6959 psia or 0 psig (pounds-force per square inch, absolute or gauge lbf/in 2

Absolute Pressure

The total pressure exerted on a system, equal to the gauge pressure plus atmospheric pressure. psia

Gauge Pressure

The pressure of a system measured by a gauge, which excludes atmospheric pressure. psig

 
Pressure Loggers
Pressure Gauges
Pressure Conversions
Pressure Calibration & Certification

Recall Notification

PTC Metrology® will notify you by email when your instrument is due for recalibration, in accordance with the period of validity that your quality system specifies. Please register your instrument today.

A2LA Scope of Accreditation PTC Metrology Laboratory Test Equipment
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PTC Instruments 2301 Federal Avenue Los Angeles Ca. 90064-1482
310-478-1134 / 877-782-2329 / Fax 310-312-0826 www.ptc1.com sales @ptc1.com
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