Temperature Uniformity Survey (TUS) Services
Consistent temperature distribution is critical to the safety, reliability, and quality of thermally processed parts. Our national network of local calibration providers delivers the documented uniformity data you rely on—supporting process control, preventing out-of-spec results, and reducing costly liability risks.
Our Temperature Uniformity Services
Temperature Uniformity Surveys support any operation relying on furnaces, ovens, and thermal processing equipment where consistent temperature directly affects product quality and process control
Furnaces, ovens, and other thermal processing equipment rarely heat with perfect uniformity—hot spots and cold spots can develop throughout the chamber, putting parts at risk of under- or over-processing even when the control system reads an accurate setpoint. Temperature Uniformity Surveys verify how consistently a furnace or oven maintains temperature across its entire working volume, providing the data manufacturers need to demonstrate process control, meet customer specifications, and produce consistent, reliable results.
Our Process
A Temperature Uniformity Survey (TUS) is a systematic process of placing multiple calibrated thermocouples throughout a furnace or oven's working chamber to measure and document temperature consistency across the entire load volume. Rather than verifying accuracy at a single control point, a TUS captures the real temperature distribution parts actually experience during processing, identifying any variation between the hottest and coldest zones within the chamber.
During a survey, technicians position thermocouples according to the required grid pattern and chamber size, then monitor and record temperature readings across all sensor locations as the equipment stabilizes at the specified setpoint. This data is compiled into a comprehensive report showing the temperature at each test location, the spread between the highest and lowest readings, and whether the equipment falls within the required uniformity classification. Results are typically supported by System Accuracy Tests, along with calibration of the associated temperature controllers, control thermocouples, and temperature recorders that make up the complete thermal control system.
Our Temperature Uniformity Services
Our technicians provide comprehensive testing of thermal processing equipment and its associated control instrumentation:
-
Temperature Uniformity Surveys (TUS): Multi-point thermocouple testing throughout the working chamber to document temperature distribution and identify hot or cold zones across the load volume.
-
System Accuracy Tests (SAT): Verification that the equipment's control and monitoring instrumentation accurately reflects actual chamber temperature, confirming the reliability of the readings used to control the process.
-
Temperature Controller Calibration: Calibration of the instruments that regulate furnace and oven temperature, ensuring the control system maintains the correct setpoint.
-
Control TC Calibration: Calibration of the control thermocouples that provide feedback to the temperature controller, verifying the accuracy of the signal driving process control.
-
Temperature Recorder Calibration: Calibration of the instruments used to document process temperatures over time, ensuring your process records are accurate and defensible.
Find Temperature Uniformity Survey Services
-
Accutek Lab
Accutek Lab has been providing reliable and cost-effective pipette calibration services across the United States since 1996.
Calibration ServicesPipette Calibration -
Aldinger
Since 1972, Aldinger has been providing top-quality calibration services for test and measurement equipment in Texas and beyond.
Calibration ServicesDimensional Calibration Flow Calibration Force Calibration Grain Moisture Tester Calibration Mass Calibration +7 more -
Cal-Cert
Cal-Cert is committed to providing the highest level of calibrations and certification service to our customers.
Calibration ServicesDimensional Calibration Construction Materials Testing Equipment Calibration Electrical Calibration Force Calibration Humidity Calibration +6 more -
Cal-Labs
Cal-Labs has provided quality calibration in Southern California since 1977. We are A2LA accredited to ISO 17025.
Calibration ServicesDimensional Calibration -
Calibration Services Inc.
Calibration Services, Inc. (CSI) is an on-site and in-house calibration firm specializing in calibration and service of mechanical testing devices.
Calibration ServicesConstruction Materials Testing Equipment Calibration Dimensional Calibration Force Calibration Mass Calibration Pressure Calibration +3 more -
Cal Tec Process Management
The calibration specialists at CTPM have been providing precision calibration and quality assurance since 1987.
Calibration ServicesConstruction Materials Testing Equipment Calibration Dimensional Calibration Electrical Calibration Flow Calibration Force Calibration +14 more -
Calser Calibrations
Since 1979, Calser Calibrations has delivered trusted, precision calibration services backed by a commitment to quality and reliability.
Calibration ServicesConstruction Materials Testing Equipment Calibration Dimensional Calibration Force Calibration Mass Calibration Pressure Calibration +3 more -
CMG Sales, Inc.
CMG Sales, Inc. is a leading manufacturer sales representative and ISO 17025 accredited calibration laboratory providing services to manufacturers nationwide.
Calibration ServicesCoating Thickness Calibration Color Calibration -
Color Calibration Group
Color Calibration Group has been providing professional calibration services for all your color, light, and viscosity calibration needs for over 25 years.
Calibration ServicesCoating Thickness Calibration Color Calibration -
ETI Precision
ETI has been a leader in the calibration, repair, and sale of test and measurement equipment since 1994, and covers all 50 states.
Calibration ServicesDimensional Calibration Electrical Calibration Force Calibration Humidity Calibration IR Temperature Calibration +7 more -
Holts Precision, Inc.
For over 60 years Holts Precision, Inc. has performed calibrations & repairs on all major brands of gaging equipment.
Calibration ServicesDimensional Calibration Electrical Calibration Force Calibration Mass Calibration Pressure Calibration +2 more -
Huston-DePue
Established in 1960, HDCL is staffed by experienced professionals who understand the critical role accurate measurement plays in quality control and regulatory compliance.
Calibration ServicesDimensional Calibration Flow Calibration Force Calibration Humidity Calibration Mass Calibration +5 more -
Instrument Technologies, Inc.
For over three decades, Instrument Technologies, Inc. (ITI) has been a trusted partner for regulated industries seeking precision, compliance, and operational reliability.
Calibration ServicesDimensional Calibration Electrical Calibration Flow Calibration Humidity Calibration Mass Calibration +4 more -
IPM, Inc.
Industrial Process Measurement, Inc. has been in the instrument supply, service and calibration business for over 30 years.
Calibration ServicesConstruction Materials Testing Equipment Calibration Dimensional Calibration Electrical Calibration Flow Calibration Force Calibration +8 more -
J & J Calibration Service
J&J Calibration Service, an ISO-17025 accredited company, offers unmatched mobile calibration capabilities and laboratory calibration services.
Calibration ServicesConstruction Materials Testing Equipment Calibration Dimensional Calibration Electrical Calibration Force Calibration IR Temperature Calibration +4 more -
OCS Technologies
Founded in 1930, OCS Technologies is a trusted multi-discipline calibration service provider as well as leading product distributor.
Calibration ServicesDimensional Calibration Force Calibration Humidity Calibration IR Temperature Calibration Mass Calibration +7 more -
OnCal
With over 23 years of experience in pipette calibration in the Pacific Northwest, the OnCal Corporation guarantees seamless and dependable metrology services.
Calibration ServicesPipette Calibration -
Polymer Testing Instruments
Since 1996 Polymer Testing Instruments Inc. has provided high quality service and calibration of equipment for the rubber, plastics, and energy industries.
Calibration ServicesDimensional Calibration Electrical Calibration Force Calibration Pressure Calibration Temperature Calibration +1 more -
Precision Calibration Systems
PCS is a full-service ISO 17025 Accredited calibration laboratory, founded with the goal of providing reliable and accurate instrument calibration service.
Calibration ServicesConstruction Materials Testing Equipment Calibration Dimensional Calibration Electrical Calibration Flow Calibration Force Calibration +10 more -
Quality Control Services
Quality Control Services is an established, accredited calibration services and laboratory equipment company with over 40 years of experience.
Calibration ServicesForce Calibration Mass Calibration Pipette Calibration Temperature Calibration Scale Calibration -
Quality Surveillance, Inc.
QSI has been providing Los Angeles, Ventura, Santa Barbara and Santa Clarita Counties with reliable and cost effective metrology services since 1992.
Calibration ServicesDimensional Calibration Electrical Calibration Force Calibration Mass Calibration Pipette Calibration +5 more -
Scale Service & Supply
From laboratory balances to truck scales, Scale Service & Supply has been providing precision calibration for weighing systems since 1987.
Calibration ServicesScale Calibration -
Servo Innovations
Servo Innovations, founded in 2005, has earned industry-wide trust for its accredited calibration, repair, and technical services.
Calibration ServicesConstruction Materials Testing Equipment Calibration Dimensional Calibration Electrical Calibration Flow Calibration Force Calibration +3 more -
Tescom Calibration Services
Tescom Calibration Services has provided sales, repair, and calibration of telecom test equipment since 1982.
Calibration ServicesDimensional Calibration Electrical Calibration Flow Calibration Force Calibration GPS/GNSS Calibration +10 more -
Trident Calibration Labs
Serving the greater Phoenix area, Trident Calibration Labs has more than 100 years of combined calibration experience.
Calibration ServicesDimensional Calibration Electrical Calibration Force Calibration Humidity Calibration IR Temperature Calibration +7 more -
Tru Cal International
Serving as an asset to countless businesses in a variety of industries, Tru Cal International has specialized in test equipment calibration since 1992.
Calibration ServicesDimensional Calibration Electrical Calibration Force Calibration GPS/GNSS Calibration IR Temperature Calibration +6 more -
Utah Scale Center
Utah Scale Center offers servicing and calibrating of industrial scales across the Rocky Mountain Region, with 70+ years of experience.
Calibration ServicesScale Calibration -
Washington Calibration
Washington Calibration has been providing customers with quality gage repair services for all their inspection measuring instruments for more than 34 years.
Calibration ServicesDimensional Calibration Force Calibration Mass Calibration Pressure Calibration Temperature Calibration +1 more
No companies found
Try adjusting your filters to see more results.
Request a Calibration Service from the Accredited Labs Network
Audit-Ready Calibration in 3 Simple Steps
Submit Your Equipment List
Send us a list of the equipment you need calibrated, and we’ll provide a tailored quote with clear pricing—no hidden fees.
Schedule Your Calibration
Choose a convenient time for a mobile or on-site equipment calibration. Our certified technicians ensure precision and compliance with ISO/IEC 17025 standards.
Stay Compliant & Audit-Ready
Receive detailed calibration reports and certification, giving you peace of mind for audits and operational excellence.
Frequently Asked Questions
-
What is a Temperature Uniformity Survey (TUS)?
A TUS measures how consistently a furnace or oven maintains temperature throughout its entire working chamber. Multiple calibrated thermocouples are placed at various locations within the equipment to identify any hot or cold spots and document the temperature spread across the load volume.
-
How often should a TUS be performed?
Survey frequency typically depends on your industry specification, quality system requirements, and equipment usage. Many operations schedule surveys on a recurring basis (such as quarterly or annually), while others align frequency with customer or regulatory requirements. We can help determine an appropriate interval for your equipment.
-
What's the difference between a TUS and a System Accuracy Test (SAT)?
A TUS measures temperature distribution across the chamber to identify variation between locations, while a SAT verifies that your equipment's control and monitoring instruments accurately reflect the actual chamber temperature. Both are typically performed together to fully validate a thermal system's performance.
-
What happens if my equipment doesn't pass uniformity requirements?
If testing identifies temperature variation outside your required tolerance, we'll provide detailed data showing where the inconsistencies occur. This helps you determine whether adjustments to the equipment, load configuration, or usable working zone are needed to bring the system back into compliance.
