PTC Metrology™ Temperature Calibration Laboratory
Accredited by A2LA to ISO 17025 & ANSI/NCSL Z540-1
using NIST Traceable Standards

PTC Metrology™offers several levels of calibration services to conform to your quality system requirements. PTC recommends 3 point calibration as a
minimum on surface thermometers.

Including Thermometers with Probes or Stems, Readouts with Sensors or Sensors Only
PRT's , RTD's, Thermistors, Thermocouples & Probes

Environmental Thermometers, Data Loggers and
Recording Thermometers (without probes

PTC Models 616, 618, 815 and 818 series.

Infrared temperature calibration from 20°C to1000°C Black Body up to1200°C

Including ASTM Liquid In Glass Thermometers

The mean temperature on Mars is −46 °C (-51 °F)

Tech Note on ASTM Thermometers

PTC Metrology™ will examine and calibrate your ASTM Thermometer against NIST traceable standards at temperature points specified by ASTM E1 Table 1. The thermometers will be calibrated at the specified temperature in accordance with Test Method E-77. PTC is accredited by A2LA to ISO/IEC 17025 and ANSI/NCSL Z540-1. Please contact PTC us for pricing .

Selecting Temperature Points

To assist you in choosing test points, please refer to ASTM E-77 and NIST recommendations.

1. A minimum of three temperatures should be calibrated, generally low, medium and high on the scale.

2. There should be no more than 100 graduations between any two calibration temperatures. If a thermometer is calibrated every 100 divisions, the user may interpolate intermediary corrections with a precision of ± 1/2° scale division (ASTME-77) .

3. If the temperatures used by the manufacturer for scale placement are known, the temperatures used for calibration should correspond. This will assure linearity of spacing between the calibrated points, therefore allowing the user to interpolate intermediate values.

A2LA Scope of Accreditation PTC Metrology™