The AMETEK RTCt-157 is a professional reference temperature calibrator designed for highly accurate temperature sensor calibration in laboratories, industrial facilities and field applications.
With a temperature range from −45 °C to +155 °C, excellent temperature stability of ±0.005 °C and accuracy down to ±0.040 °C with an external reference sensor, the AMETEK RTCt-157 provides outstanding performance for demanding temperature calibration applications.
The instrument combines advanced temperature control technology with an intuitive touchscreen interface, intelligent reference sensors and patented Dynamic Load Compensation technology.
The AMETEK RTCt-157 is particularly suitable for calibrating resistance temperature detectors, Pt100 sensors, thermocouples, temperature transmitters and temperature switches.
Its innovative dual-zone temperature control system ensures excellent temperature uniformity, even when calibrating multiple sensors simultaneously.
The integrated Wi-Fi connectivity, Ethernet and USB interfaces provide flexible communication options for automated calibration procedures and remote operation.
The AMETEK RTCt-157 is ideal for calibration laboratories, pharmaceutical manufacturing, food processing, biotechnology and industrial quality assurance.
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Your Benefits at a Glance
The AMETEK RTCt-157 combines exceptional temperature accuracy with advanced calibration functions and intuitive operation.
Its main advantages include:
- Temperature range from −45 °C to +155 °C
- Internal reference accuracy of ±0.11 °C
- Accuracy of ±0.040 °C with the specified external reference sensor
- Total system accuracy of ±0.065 °C with accredited system calibration
- Excellent temperature stability of ±0.005 °C
- Patented Dynamic Load Compensation technology
- Active dual-zone temperature control
- Advanced touchscreen interface
- Automatic graphical stability monitoring
- Intelligent external reference sensors
- Two sensor-under-test inputs in the appropriate configuration
- Integrated Wi-Fi connectivity
- Ethernet and USB communication
- Browser-based remote monitoring and control
- Automatic temperature stepping
- Temperature switch testing
- Interchangeable calibration inserts
- Calibration well depth of 160 mm
- Fast heating and cooling
- Portable construction weighing approximately 10.3 kg
- Suitable for laboratory and industrial calibration
Ideal for Demanding Calibration Applications
The AMETEK RTCt-157 is designed for professional temperature calibration applications requiring excellent accuracy, stability and temperature uniformity.
Typical applications include the calibration of industrial resistance thermometers, thermocouples, temperature transmitters and temperature switches.
The instrument is particularly suitable for applications where temperature sensors must be calibrated at temperatures below ambient conditions.
Examples include refrigeration systems, environmental monitoring, pharmaceutical manufacturing and temperature-controlled production processes.
Its high measurement performance also makes the AMETEK RTCt-157 suitable for calibration laboratories working with demanding measurement uncertainty requirements.
The combination of touchscreen operation and automated calibration functions helps reduce manual work and improve calibration efficiency.
Temperature Range from −45 °C to +155 °C
The AMETEK RTCt-157 provides a temperature calibration range of:
−45 °C to +155 °C
This specification applies at an ambient temperature of 23 °C.
The achievable minimum temperature depends on the ambient conditions.
| Ambient Temperature | Calibration Range |
|---|---|
| 0 °C | −57 °C to +155 °C |
| 23 °C | −45 °C to +155 °C |
| 40 °C | −31 °C to +155 °C |
This wide operating range makes the AMETEK RTCt-157 suitable for many industrial and laboratory applications.
Typical calibration points include −40 °C, −20 °C, 0 °C, 25 °C, 50 °C, 100 °C and 150 °C.
The ability to generate temperatures significantly below ambient temperature is particularly useful for calibrating sensors used in refrigeration and environmental monitoring.
High Temperature Accuracy
The AMETEK RTCt-157 provides excellent temperature accuracy.
The manufacturer specifies different accuracy values depending on the reference configuration.
Accuracy with Internal Reference
When using the internal temperature reference, the manufacturer specifies:
±0.11 °C
This specification applies to the A, B and C configurations.
Accuracy with External Reference
When using the specified STS-200 external reference sensor, the manufacturer specifies:
±0.040 °C
This value describes the accuracy relative to the reference standard over a 12-month period.
Total System Accuracy
With the specified external reference sensor and accredited system calibration, the manufacturer specifies:
±0.065 °C
This specification includes the reference sensor and calibration uncertainty under the defined conditions.
The distinction between internal accuracy, external reference accuracy and total system accuracy is particularly important when evaluating the uncertainty of a calibration procedure.
Excellent Temperature Stability of ±0.005 °C
The AMETEK RTCt-157 provides outstanding temperature stability.
The manufacturer specifies:
±0.005 °C
Temperature stability describes the temperature variation over time under defined operating conditions.
The manufacturer evaluates stability after the stability indicator has been active for 15 minutes, followed by a 30-minute measurement period.
Excellent temperature stability is essential for accurate comparison calibrations.
It helps minimize measurement variations when calibrating precision resistance thermometers and industrial temperature sensors.
The temperature display resolution can be selected down to 0.001 °C.
Patented Dynamic Load Compensation
One of the most important features of the AMETEK RTCt-157 is its patented Dynamic Load Compensation technology.
Dynamic Load Compensation, or DLC, is designed to compensate for temperature differences caused by sensor loading.
When several temperature sensors are inserted into a calibration block, their thermal characteristics can influence the temperature distribution.
Large sensors and sensors with different diameters may introduce additional thermal loads.
The DLC system helps compensate for these effects and improves temperature uniformity within the calibration insert.
This is particularly useful when calibrating several sensors simultaneously.
The AMETEK RTCt-157 also provides graphical information about DLC performance.
This allows users to monitor the compensation process during calibration.
Active Dual-Zone Temperature Control
The AMETEK RTCt-157 features active dual-zone temperature control.
The system uses two independently controlled temperature zones.
The lower zone provides precise temperature control within the calibration area.
The upper zone compensates for heat losses caused by the open top of the calibration block and the inserted temperature sensors.
This technology helps reduce axial temperature gradients.
Combined with Dynamic Load Compensation, the dual-zone system provides excellent temperature uniformity.
This is particularly important for calibration procedures involving multiple sensors or sensors with different dimensions.
Advanced Touchscreen Interface
The AMETEK RTCt-157 features a modern touchscreen interface.
The display provides intuitive access to temperature settings, calibration functions and measurement information.
Users can navigate directly between operating modes and configure calibration procedures.
The touchscreen interface simplifies everyday operation and reduces the number of manual steps required during calibration.
The display can present temperature values, stability information and graphical measurement data.
This makes the instrument suitable for both experienced calibration technicians and industrial maintenance personnel.
Automatic Graphical Stability Monitoring
The AMETEK RTCt-157 includes an advanced graphical monitoring system.
The instrument displays temperature changes in real time.
During heating or cooling, the graph provides an overview of the temperature approaching the selected setpoint.
Once the calibration block reaches the required stability, the display automatically switches to a more detailed graphical representation.
This allows small temperature deviations to be identified more easily.
The graphical display helps users evaluate temperature stability before recording calibration results.
This feature is particularly useful for demanding calibration procedures requiring stable temperature conditions.
Wi-Fi, Ethernet and USB Communication
The AMETEK RTCt-157 provides flexible communication options.
The instrument supports:
- Wi-Fi
- Ethernet
- USB
Integrated Wi-Fi allows remote access through a compatible web browser.
Users can monitor temperature values and control supported functions without standing directly in front of the calibrator.
This is particularly useful when the instrument is installed in a laboratory, cleanroom or production environment.
Ethernet and USB communication support integration into suitable calibration systems.
Remote operation can help improve efficiency when performing automated or repetitive calibration procedures.
Two Sensor-Under-Test Inputs
The AMETEK RTCt-157B provides two sensor-under-test inputs.
These allow two compatible sensors to be measured during the
