The AMETEK CTC-320B is a compact dry block temperature calibrator designed for fast, reliable and efficient temperature sensor calibration in industrial environments, calibration laboratories and field service applications.
With a temperature range from 33 °C to 320 °C, an accuracy of ±0.5 °C and temperature stability of ±0.1 °C, the AMETEK CTC-320B provides reliable performance for routine temperature calibration.
The instrument combines efficient heating technology with a user-friendly design to simplify temperature sensor testing and calibration.
Its interchangeable calibration inserts allow temperature sensors with different diameters to be calibrated using the same instrument.
The AMETEK CTC-320B is particularly suitable for calibrating resistance temperature detectors, Pt100 sensors, thermocouples, temperature switches and industrial thermometers.
With a weight of approximately 7 kg, the instrument is suitable for both laboratory and field applications.
The integrated RS-232 communication interface also allows the calibrator to be connected to compatible computer-assisted calibration systems.
For professional temperature calibration equipment and metrological traceability, visit the europascal Calibration Service.
Your Benefits at a Glance
The AMETEK CTC-320B combines compact construction with reliable temperature calibration performance.
Its main advantages include:
- Temperature range from 33 °C to 320 °C
- Temperature accuracy of ±0.5 °C
- Temperature stability of ±0.1 °C
- Heating from 23 °C to 320 °C in approximately 20 minutes
- Cooling from 320 °C to 100 °C in approximately 22 minutes
- Typical stabilization time of 8 minutes
- Calibration well diameter of 26 mm
- Immersion depth of 190 mm
- Interchangeable calibration inserts
- Suitable for different temperature sensor diameters
- Integrated temperature switch testing
- Automatic temperature stepping
- RS-232 communication interface
- Mains Voltage Immunity technology
- Compact and portable construction
- Weight of approximately 7 kg
- Suitable for laboratory and field calibration
- No calibration liquid required
- Professional calibration support from europascal
Temperature Range from 33 °C to 320 °C
The AMETEK CTC-320B provides a temperature calibration range of:
33 °C to 320 °C
This range covers numerous industrial temperature measurement applications.
Typical calibration temperatures include:
- 50 °C
- 75 °C
- 100 °C
- 150 °C
- 200 °C
- 250 °C
- 300 °C
- 320 °C
The specified temperature range applies at an ambient temperature of 23 °C.
The AMETEK CTC-320B is particularly suitable for checking temperature sensors used in industrial heating systems, process instrumentation, manufacturing equipment and maintenance applications.
The instrument generates controlled temperatures using a metal calibration block.
Temperature sensors are inserted into suitable calibration inserts and allowed to reach thermal equilibrium.
The sensor indication can then be compared with the calibration temperature.
Reliable Temperature Accuracy
The AMETEK CTC-320B provides a manufacturer-specified temperature accuracy of:
±0.5 °C
This specification applies when using the internal reference temperature sensor under the manufacturer’s defined conditions.
The accuracy specification describes the difference between the actual calibration temperature and the temperature indicated by the calibrator.
For applications requiring lower measurement uncertainty, an external calibrated reference thermometer can be inserted into the calibration block.
The reference thermometer provides an independent measurement of the calibration temperature.
This allows comparison calibration of the device under test.
The overall measurement uncertainty depends on the complete calibration arrangement and must be evaluated separately.
Excellent Temperature Stability
The AMETEK CTC-320B provides temperature stability of:
±0.1 °C
Temperature stability describes the variation of the calibration block temperature over time under defined conditions.
According to the manufacturer, stability is evaluated after the stability indicator has been active for ten minutes.
The subsequent measurement period is 30 minutes.
Stable temperature conditions are important for reliable temperature sensor calibration.
They help reduce measurement variations and improve the repeatability of calibration results.
Fast Heating Performance
The AMETEK CTC-320B features an efficient heating system.
The manufacturer specifies a typical heating time of:
20 minutes from 23 °C to 320 °C
This allows the instrument to reach its maximum operating temperature within a relatively short period.
Fast heating is particularly useful when performing multi-point temperature calibration procedures.
Technicians can move between calibration points without unnecessary waiting periods.
Actual heating times depend on ambient conditions, sensor loading and the selected calibration insert.
Efficient Cooling Performance
The AMETEK CTC-320B also provides controlled cooling performance.
The manufacturer specifies a typical cooling time of:
22 minutes from 320 °C to 100 °C
This allows calibration procedures to be performed with increasing and decreasing temperature sequences.
Cooling performance is particularly important when investigating the hysteresis of temperature sensors.
The actual cooling time depends on operating conditions and thermal loading.
Short Stabilization Time
The AMETEK CTC-320B features a typical stabilization time of:
8 minutes
This specification describes the time required for the calibration block to stabilize under the manufacturer’s defined conditions.
The temperature sensor being calibrated may require additional time to reach thermal equilibrium.
The necessary waiting time depends on sensor construction, immersion depth and thermal response.
For demanding calibration applications, the stability of the complete measurement arrangement should be verified before recording results.
Interchangeable Calibration Inserts
The AMETEK CTC-320B uses interchangeable calibration inserts.
These allow temperature sensors with different diameters to be calibrated using the same instrument.
The manufacturer specifies the following dimensions:
| Specification | Value |
|---|---|
| Calibration well diameter | 26 mm |
| Insert diameter | 25.7 mm |
| Insert length | 200 mm |
| Immersion depth | 190 mm |
Different insert configurations are available.
Single-hole and multi-hole inserts allow the instrument to accommodate different sensor dimensions.
The appropriate insert should be selected according to the diameter of the temperature sensor.
Good thermal contact between the sensor and insert helps minimize measurement errors.
Excessive clearance can increase temperature differences between the calibration block and the sensing element.
Deep Calibration Well
The AMETEK CTC-320B provides an immersion depth of:
190 mm
The relatively deep calibration well is particularly useful for industrial temperature sensors with longer sensing elements.
Sufficient immersion depth helps reduce heat conduction errors along the sensor stem.
The actual required immersion depth depends on sensor geometry, sensing element position and the required measurement uncertainty.
For high-accuracy applications, immersion effects should be evaluated as part of the calibration procedure.
Temperature Switch Testing
The AMETEK CTC-320B includes an electrical input for testing temperature switches.
Temperature switches are commonly used in industrial control systems.
They activate or deactivate an electrical contact when a defined temperature is reached.
The calibrator can generate controlled temperature changes while monitoring the switch contact.
This allows switching points to be determined.
The switch input is designed for potential-free contacts.
The manufacturer specifies:
| Specification | Value |
|---|---|
| Switch input | Dry contact |
| Maximum test voltage | 5 V DC |
| Maximum test current | 2.5 mA |
The function is particularly useful for checking thermostats and temperature switches during maintenance.
Automatic Temperature Stepping
The AMETEK CTC-320B supports automatic temperature stepping.
This function allows predefined temperature sequences to be performed without continuously adjusting the setpoint manually.
Automatic temperature stepping is useful for routine calibration procedures.
For example, a technician can perform calibration measurements at several temperature points.
The instrument changes the calibration temperature according to the programmed sequence.
This reduces manual intervention and helps improve efficiency.
RS-232 Communication Interface
The AMETEK CTC-320B includes an RS-232 communication interface.
The manufacturer specifies a nine-pin male connector.
The interface allows communication with compatible external equipment.
It can be used to integrate the calibrator into computer-assisted calibration procedures.
This is particularly useful for calibration laboratories and industrial users performing repetitive temperature calibration tasks.
The communication interface can also support calibration documentation when used with compatible software.
Mains Voltage Immunity
The AMETEK CTC-320B incorporates Mains Voltage Immunity technology.
This technology is designed to reduce the influence of mains voltage fluctuations on temperature control.
Stable electrical operating conditions help maintain consistent calibration performance.
This is particularly useful for field applications where the electrical supply may vary.
The instrument is available in different mains voltage configurations.
Compact and Portable Construction
The AMETEK CTC-320B combines professional temperature calibration performance with portable construction.
The manufacturer specifies a weight of approximately:
7 kg
The instrument dimensions are:
241 × 139 × 408 mm
Its compact design makes the calibrator suitable for transportation between different measurement locations.
The instrument can be used in calibration laboratories, maintenance workshops and industrial production facilities.
Unlike liquid calibration baths, the dry block design does not require calibration fluids.
This simplifies transportation, setup and cleaning.
Calibration of Pt100 and RTD Sensors
The AMETEK CTC-320B is suitable for calibrating resistance temperature detectors.
Typical applications include:
- Pt100 calibration
- Pt1000 calibration
- Industrial RTD calibration
- Temperature probe verification
- Temperature indicator testing
The sensor is inserted into a suitable calibration insert.
The dry block generates a controlled temperature.
The temperature indicated by the device under test can then be compared with the reference temperature.
The AMETEK CTC-320B provides the temperature source.
Electrical resistance measurement requires a suitable external measuring instrument.
Calibration of Thermocouples
The AMETEK CTC-320B can also be used for thermocouple calibration.
Thermocouples are widely used in industrial temperature measurement.
The instrument provides a controlled temperature environment for checking thermocouple measurement systems.
The thermocouple is inserted into the calibration block and allowed to stabilize.
Its indicated temperature can then be compared with the reference temperature.
For accurate thermocouple calibration, reference junction compensation and the uncertainty of the measuring instrument must be considered.
Calibration of Industrial Thermometers
The AMETEK CTC-320B is suitable for checking different types of industrial thermometers.
These include digital thermometers and suitable mechanical temperature indicators.
The thermometer sensor is inserted into the calibration well.
After stabilization, the displayed temperature is compared with the reference temperature.
This allows users to verify thermometer performance at several temperature points.
Regular calibration helps maintain reliable industrial temperature measurements.
Technical Highlights
| Specification | AMETEK CTC-320B |
|---|---|
| Manufacturer | AMETEK |
| Model | CTC-320B |
| Product type | Compact Dry Block Temperature Calibrator |
| Temperature range | 33 °C to 320 °C |
| Reference ambient temperature | 23 °C |
| Temperature accuracy | ±0.5 °C |
| Temperature stability | ±0.1 °C |
| Temperature resolution | 1 °C or 0.1 °C |
| Heating time, 23 °C to 320 °C | 20 minutes |
| Cooling time, 320 °C to 100 °C | 22 minutes |
| Typical stabilization time | 8 minutes |
| Calibration well diameter | 26 mm |
| Immersion depth | 190 mm |
| Insert diameter | 25.7 mm |
| Insert length | 200 mm |
| Calibration inserts | Interchangeable |
| Temperature switch input | Dry contact |
| Maximum switch test voltage | 5 V DC |
| Maximum switch test current | 2.5 mA |
| Communication interface | RS-232 |
| Operating temperature | 0 °C to 40 °C |
| Storage temperature | −20 °C to 50 °C |
| Relative humidity | 0–90% RH, non-condensing |
| Power supply | 115 V or 230 V AC version |
| Maximum power consumption | 600 VA |
| Protection rating | IP10 |
| Dimensions | 241 × 139 × 408 mm |
| Weight | Approx. 7 kg |
Calibration Service by europascal
Regular calibration is essential for maintaining reliable and traceable temperature measurements.
europascal provides professional calibration services for temperature measuring instruments and calibration equipment.
When the AMETEK CTC-320B is used for temperature sensor calibration, the measurement uncertainty must be evaluated according to the complete calibration procedure.
Relevant uncertainty contributions may include:
- Calibration of the temperature reference
- Temperature stability
- Axial temperature distribution
- Radial temperature distribution
- Sensor immersion depth
- Thermal contact between sensor and insert
- Loading effects
- Reference thermometer uncertainty
- Measurement repeatability
The uncertainty evaluation should follow the applicable calibration procedure and relevant metrological guidelines.
For professional calibration services and metrological traceability, visit the europascal Calibration Service.
Why Choose the AMETEK CTC-320B?
The AMETEK CTC-320B combines reliable temperature calibration with compact construction and straightforward operation.
Its temperature range from 33 °C to 320 °C covers numerous industrial applications.
Temperature accuracy of ±0.5 °C and stability of ±0.1 °C provide suitable conditions for routine temperature sensor calibration.
The efficient heating system allows the instrument to reach 320 °C in approximately 20 minutes.
Interchangeable calibration inserts accommodate sensors with different diameters.
The 190 mm immersion depth is particularly useful for industrial temperature probes.
Integrated temperature switch testing and automatic temperature stepping simplify routine calibration procedures.
The RS-232 communication interface supports integration into computer-assisted calibration systems.
With a weight of approximately 7 kg, the instrument is suitable for both laboratory and field applications.
For industrial users requiring a compact and reliable temperature calibrator, the AMETEK CTC-320B provides an excellent combination of functionality, efficiency and portability.
europascal supports customers with professional temperature calibration equipment, technical advice and calibration services.
Typical Applications for the AMETEK CTC-320B
Typical applications include:
- Pt100 calibration
- Pt1000 calibration
- RTD calibration
- Thermocouple calibration
- Digital thermometer verification
- Industrial thermometer calibration
- Temperature switch testing
- Industrial heating systems
- Process instrumentation
- Preventive maintenance
- Commissioning
- Manufacturing quality assurance
- Calibration laboratories
- Temperature metrology
- Field calibration
The combination of reliable temperature accuracy, efficient heating, interchangeable inserts and portable construction makes the AMETEK CTC-320B a practical solution for professional temperature calibration.
Find more AMETEK temperature calibration equipment at europascal.
Manufacturer information for the AMETEK CTC-320B can be found on the official AMETEK website.
