PTC® Metrology an A2LA Accredited Laboratory for Calibration in temperature, pressure, humidity, infrared and durometers, Cert no. 1896.01 NIST traceable standards ISO 17025 compliant

Specializing in Pressure Calibration NIST Traceable Standards

PTC Metrology Home I PTC Instruments Home I Pressure Calibrators I Pressure Gauges I Pressure Loggers

PTC Metrology® is accredited by A2LA to ISO/IEC 17025 (NIST Traceable) Our lab offers pressure calibration from 6 to12140 psig with an uncertainty of 50 parts in 10⁶ with a Ruska 2400 HL Deadweight Tester. 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 offers pressure gauges, pressure data loggers and multi function pressure calibrators. The portable and bench top models are available in Pneumatic or Hydraulic. The calibrators have been upgraded with ranges from 0 to 2500 bar. Contact our sales department for complete specifications.

***Pressure Calibration Services***
.	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