Temperature Sensors

Thermocouples

PTC Metrology™ calibrates thermocouples against a standard platinum resistance thermometer (SPRT) using primarily Hart Scientific baths, comparators and calibrators. We use several different techniques to minimize uncertainties while maximizing efficiency to keep the costs as low as possible without compromising quality. PTC Metrology^® is the laboratory of choice for many of our customers because they know that they can depend on us for correct, complete, and on-time calibrations at reasonable prices.

PTC^® uses different temperature sources over a wide range to provide the highest quality and reliability on all of its calibration certificates. The temperature sources for calibration are listed in the table below.

 

Temperature Source	Comparator Hart 9150	Liquid Baths	Hart Furnace 9112	Hart 3125 Surface Calibrator
Temperature °C	100°C to 1200°C	-75°C to 300°C	250°C to 1100°C	20°C to 400°C
Temperature °F	212F to 2192°F	-103°F to 572°F	482°F to 2012°F	68°F to 750°F
Probe Length	6" minimum	no minimum	8" minimum	surface probe
k=2 uncertainty	±700mK	±10mK typical	±1000mK	20°C to 190°C ±500mK 191°C to 400°C ±1000mK

 

PTC Metrology™ is Accredited by A2LA to ISO/IEC 17025 ANSI/NCSL Z540-1 NIST Traceable

• A2LA Scope of Accredited (cert no.1896.01)
• Individual Probe Calibration
• Sensors and Sensors with Readouts
• Selecting Temperature Points
• Notification Calibration Due Date
• THERMOCOUPLE TECHNICAL REFERENCE DATA
  
• Temperature Basics