The Ametek Jofra RTCt-157 is an advanced dry-block reference temperature calibrator that provides exceptional precision, stability and speed in the field or laboratory:

• -45 to 155°C (-49 to 311°F) temperature range
• 0.04°C accuracy with external reference sensor
• 0.005°C stability
• Heats from 23°C ambient to 155°C maximum in 17 minutes
  
• Cools from 155°C maximum to -45°C minimum in 52 minutes
• Dynamic load compensation for reliable temperature uniformity
• Real-time high resolution adaptive graphing for precision accuracy and deviation detection
• Touchscreen interface for clear, intuitive, graphical navigation
• Wi-fi connectivity for remote control, monitoring, live data access and sharing

Key Features & Specifications

Flexible Temperature Range:
Operates between -45 and 155°C

Fast Heating, Cooling and Stabilisation Times:
Heats from -45 to 23°C in 7 minutes
Heats from 23 to 155°C in 17 minutes
Cools from 155 to 100°C in 5 minutes
Cools from 100 to 23°C in 10 minutes
Cools from 23 to -30°C in 17 minutes
Cools from -30 to -45°C in 20 minutes
Reaches stability in 10 minutes

Precision Accuracy, Stability and Resolution:
Accurate to 0.04°C with external reference sensor
Accurate to 0.11°C with internal reference sensor
Stability of 0.005°C
Adjustable resolution of 1 / 0.1 / 0.01 / 0.001°C / °F / K

Graphical Touchscreen User Interface:
An advanced touchscreen display provides fast, intuitive navigation with all the relevant information right at your fingertips.
Live data, setpoints, stability details, precise numerical values, finely-detailed graphical trending and step-by-step instructions simplify and enhance your calibration process.

Active Dual-Zone Heating Control:
Two independently controlled heating zones within the calibration block ensure precisely regulated temperature consistency throughout the well for uniform heating of large or multiple sensors.

Dual Sensor Input for Parallel Calibration:
The ability to simultaneously calibrate two separate sensors under test efficiently doubles calibration capacity and halves calibration times, streamlining workflows and reducing downtime.

Dynamic Load Compensation:
A dynamic load compensation (DLC) sensor system adjusts for any thermal inconsistencies, providing temperature stability in the insert and compensating for the effects of mass loading to preserve accuracy when testing large or multiple sensors.

Versatile Immersion Depth & Insert Width:
A 160mm (6.3") well supports diameters up to 16mm (5/8") for flexible calibration options across a wide range of sensor sizes.

Intelligent Reference Sensors for Plug & Play Connectivity:
Smart reference sensors store individual calibration data for reduced set-up time, error-free operation and traceability compliance.

Mains Variance Immunity for Secure Stability:
Internal mains variance immunity (MVI) circuitry converts the incoming power supply to a steady DC voltage, ensuring a consistent energy flow to the heating elements to maintain critical stability and calibration accuracy during unstable power fluctuations.

Advanced Graphical Switch Testing:
A highly-detailed switch test display provides simultaneous graph and test data, plotting activation points over time alongside open / close temperatures and hysteresis for instant clarity, precision and documenting.

Wireless, USB and Ethernet Connectivity:
Wi-fi capabilities allow you to remotely monitor and analyse real-time calibration data through a web interface.
USB and ethernet connectivity ensure seamless integration with existing systems.

Time-Saving Automation and User-Friendly Features:
Auto-stepping with adjustable hold times enables consistent, repeatable and efficient complex multi-step calibrations.
Direct reading functionality measures resistance, thermocouple, mA and voltage from the sensor under test for immediate feedback.
Up to six custom temperature points can be preset and stored to match sensor requirements.

Fully Configurable for Your Application:
RTCt-157 models provide a choice of basic or advanced functionality, with optional dual sensor under test inputs, dynamic load compensation sensor input, external sensor input and custom-built smart reference sensors for increased accuracy.
An integrated support rod kit protects cables, provides stable mounting and ensures a fixed immersion depth for delicate, long or heavy sensors.
A custom-built hard carry case with trolley offers increased protection, security and storage for the full range of accessories.

Lightweight, Portable and Rugged:
Weighing only 10.3kg, the RTCt-157 is designed for easy transporting and positioning.
A wide operating temperature range of 0 to 40°C allows operation in harsh conditions.

Delivered Ready for Immediate Operation:
Every Jofra RTCt-157 is delivered as standard with:
JofraCal calibration software
Wi-fi dongle
USB cable
2 x red and 2 x black test leads (standard and advanced models only)
Insert removal tool
Insulation plugs
Mains power cable
Calibration certification
Manuals

Designed for Critical Industrial Temperature Calibration
Suited to:
Oil, gas and resources sectors
Energy and power generation
Pharmaceutical and biotechnology manufacturing
Aerospace component testing
Automotive and EV development
Industrial automation and quality control

Why Choose Transtek for Your Test and Calibration Needs?
At Transtek, we provide top-tier testing and calibration equipment from the world's most trusted brands to meet demanding requirements and ensure reliability and accuracy in the field.
Dedicated to providing expert service and support beyond the inital purchase, we can also organise recalibration of the RTCt-157 and any external reference sensors to Australian NATA standards once the included manufacturer's calibration certificates expire.
Find out more about our comprehensive NATA calibration services here.