The Ametek Jofra RTCt-159 ultra cooler is an advanced dry-block reference temperature calibrator.

The RTCt-159 combines exceptional accuracy, stability and speed with extreme cooling capabilities across an extended operating range:

• -100 to 155°C (-148 to 311°F) temperature range
• 0.06°C accuracy with external reference sensor
• 0.02°C stability
• Heats from -100°C minimum to 155°C maximum in 26 minutes
  
• Cools from 155°C maximum to -100°C minimum in 145 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 -100 and 155°C

Fast Heating, Cooling and Stabilisation Times:
Heats from -100 to 23°C in 12 minutes
Heats from 23 to 155°C in 14 minutes
Cools from 155 to 90°C in 15 minutes
Cools from 90 to 23°C in 25 minutes
Cools from 23 to -100°C in 105 minutes
Reaches stability in 10 minutes

Precision Accuracy, Stability and Resolution:
Accurate to 0.06°C with external reference sensor
Accurate to 0.25°C with internal reference sensor
Stability of 0.02°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.

Regulated Mains Power for Secure Stability:
A regulated DC power supply ensures stable and consistent temperature control in laboratory or industrial environments.

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-159 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 is included as standard for increased protection, security and storage for the full range of accessories.

Lightweight, Portable and Rugged:
Weighing only 14.2kg, the RTCt-159 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-159 is delivered as standard with:
Protective hard carry case with trolley
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:
Pharmaceutical production, storage and transport
Food production, storage and transport
Healthcare freezer monitoring
Aviation fuel monitoring
Marine and transport logistics operations
Laboratory cooling, freezing and storage applications

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-159 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.