The Additel AccuMac AM 1660 is a high-precision industrial platinum resistance thermometer (PRT) designed for accurate temperature measurement and calibration in laboratories, industrial facilities and demanding metrology applications.
With a temperature range from −200 °C to +670 °C, an accuracy better than 0.035 °C at 0 °C and excellent short-term stability of less than 0.01 °C, the Additel AccuMac AM 1660 provides reliable performance for precision temperature measurement.
The thermometer combines a specially designed wire-wound platinum sensing element with a robust Inconel sheath. This construction offers excellent mechanical durability, resistance to thermal shock and long-term measurement stability.
Each Additel AccuMac AM 1660 is supplied with an ISO/IEC 17025 accredited calibration, making it particularly suitable for professional calibration laboratories and industrial quality assurance.
The sensor is designed for applications requiring a reliable reference thermometer with excellent repeatability and low measurement drift.
For professional temperature calibration equipment and metrological traceability, visit the europascal Calibration Service.
Your Benefits at a Glance
The Additel AccuMac AM 1660 combines high measurement accuracy with robust industrial construction.
Its main advantages include:
- Wide temperature range from −200 °C to +670 °C
- Accuracy better than 0.035 °C at 0 °C
- Short-term stability better than 0.01 °C
- Long-term drift below 0.03 °C under specified conditions
- Nominal resistance of 100 Ω at 0 °C
- Temperature coefficient of 0.00385 Ω/Ω/°C
- High-quality wire-wound platinum sensing element
- Robust Inconel protective sheath
- Excellent resistance to mechanical shock
- Excellent resistance to thermal shock
- Low temperature hysteresis
- Four-wire resistance measurement
- Suitable for measurement currents of 0.5 mA and 1 mA
- Fast thermal response
- ISO/IEC 17025 accredited calibration included
- Suitable for industrial and laboratory applications
- Compatible with precision resistance thermometer readouts
- Professional calibration support from europascal
Wide Temperature Range from −200 °C to +670 °C
The Additel AccuMac AM 1660 provides a temperature measurement range of:
−200 °C to +670 °C
This wide operating range makes the thermometer suitable for numerous industrial and laboratory applications.
Typical measurement and calibration temperatures include:
- −196 °C
- −80 °C
- −40 °C
- 0 °C
- 50 °C
- 100 °C
- 200 °C
- 300 °C
- 400 °C
- 500 °C
- 600 °C
- 670 °C
The thermometer can be used in temperature calibration baths, dry block calibrators and other suitable temperature sources.
Its wide measurement range allows one reference thermometer to cover many calibration applications.
For accurate measurements, sufficient immersion depth and appropriate thermal contact must be ensured.
High Measurement Accuracy
The Additel AccuMac AM 1660 provides excellent temperature measurement accuracy.
The manufacturer specifies:
Accuracy: <0.035 °C at 0 °C
This accuracy makes the thermometer suitable for precision temperature measurement and comparison calibration.
The accuracy specification applies at the stated reference temperature and must not be interpreted as a constant accuracy across the entire operating range.
For applications requiring the lowest possible measurement uncertainty, the individual calibration certificate should be used to determine the thermometer’s calibration corrections.
The complete measurement uncertainty also depends on the connected resistance thermometer readout and the measurement conditions.
Excellent Short-Term Stability
The Additel AccuMac AM 1660 provides excellent short-term stability.
The manufacturer specifies:
Short-term stability: <0.01 °C
High short-term stability is essential for precision temperature measurements.
It helps ensure repeatable results during calibration procedures and temperature comparison measurements.
The thermometer is particularly suitable for applications requiring stable measurements over repeated temperature cycles.
Low Long-Term Drift
The Additel AccuMac AM 1660 is designed for excellent long-term measurement stability.
The manufacturer specifies:
Long-term drift: <0.03 °C
This value refers to the change measured at 0 °C after 100 hours of exposure to the maximum operating temperature.
Actual long-term drift depends on operating conditions, handling and maintenance.
Regular recalibration is recommended to monitor changes in thermometer characteristics.
The individual calibration history can be used to determine an appropriate recalibration interval.
Wire-Wound Platinum Sensing Element
The Additel AccuMac AM 1660 uses a specially designed wire-wound platinum sensing element.
Platinum resistance thermometers are widely used in precision temperature measurement because of their predictable resistance-temperature characteristics.
The nominal resistance of the sensor is:
100 Ω at 0 °C
The temperature coefficient is:
0.00385 Ω/Ω/°C
This corresponds to the commonly used industrial platinum resistance thermometer characteristic.
The sensing element is designed to minimize contamination effects at elevated temperatures.
A specially developed supporting structure helps protect the platinum wire against mechanical stress and thermal shock.
This contributes to excellent stability and repeatability.
Robust Inconel Protective Sheath
The Additel AccuMac AM 1660 features a protective sheath manufactured from Inconel.
Inconel is a nickel-based alloy known for its high-temperature strength and corrosion resistance.
The sheath provides mechanical protection for the sensitive platinum measuring element.
This makes the thermometer suitable for demanding industrial environments.
The robust construction also helps protect the sensing element against mechanical shock and temperature cycling.
Excellent Thermal Shock Resistance
The Additel AccuMac AM 1660 is designed to withstand repeated temperature changes.
The manufacturer specifies a thermal shock effect of:
<0.007 °C
This value applies after ten temperature cycles between the minimum and maximum operating temperatures under the manufacturer’s defined test conditions.
Excellent thermal shock resistance is particularly important when the thermometer is frequently transferred between different calibration temperatures.
The robust sensor construction helps maintain stable measurement characteristics during repeated use.
Low Temperature Hysteresis
The Additel AccuMac AM 1660 provides low temperature hysteresis.
The manufacturer specifies:
Hysteresis: ≤0.01 °C
Temperature hysteresis describes differences in thermometer indication depending on the previous temperature history.
Low hysteresis contributes to reliable and repeatable temperature measurements.
This characteristic is particularly important during calibration procedures involving both increasing and decreasing temperature sequences.
Four-Wire Resistance Measurement
The Additel AccuMac AM 1660 uses a four-wire electrical connection.
Four-wire resistance measurement minimizes the influence of lead resistance on the measurement result.
This is particularly important for precision platinum resistance thermometers.
The thermometer is equipped with four external copper leads insulated with PTFE.
The cable length is approximately:
2 meters
The recommended measurement currents are:
0.5 mA or 1 mA
The appropriate measurement current should be selected according to the required measurement uncertainty and the characteristics of the connected readout.
Fast Thermal Response
The Additel AccuMac AM 1660 provides a fast thermal response.
The manufacturer specifies a response time of:
5 seconds
This value describes the time required to reach 63% of a temperature step change in moving water at a flow velocity of 1 m/s.
Actual response times depend on the measurement medium, flow conditions, immersion depth and thermal contact.
The fast response makes the thermometer suitable for applications requiring efficient temperature measurement.
Sensor Dimensions
The Additel AccuMac AM 1660 is available as the AM1660-12 configuration.
The probe dimensions are:
| Specification | Value |
|---|---|
| Probe diameter | 6.35 mm |
| Probe length | 305 mm |
| Sensing element length | 32 mm |
| Sensing element position | 5 mm from the probe tip |
| Handle diameter | 15 mm |
| Handle length | 65 mm |
| Cable length | 2 m |
The 305 mm probe length provides flexibility when measuring temperatures in calibration baths and dry block calibrators.
The sensor must be immersed sufficiently to minimize heat conduction errors along the probe stem.
The required immersion depth depends on the calibration temperature, measurement medium and required uncertainty.
Technical Highlights
| Specification | Additel AccuMac AM 1660 |
|---|---|
| Manufacturer | Additel |
| Product series | AccuMac |
| Model | AM1660-12 |
| Product type | Precision Industrial PRT |
| Temperature range | −200 °C to +670 °C |
| Nominal resistance at 0 °C | 100 Ω |
| Temperature coefficient | 0.00385 Ω/Ω/°C |
| Accuracy at 0 °C | <0.035 °C |
| Short-term stability | <0.01 °C |
| Long-term drift | <0.03 °C |
| Thermal shock effect | <0.007 °C |
| Hysteresis | ≤0.01 °C |
| Measurement current | 0.5 mA or 1 mA |
| Response time | 5 seconds |
| Sensing element | Wire-wound platinum |
| Sensing element length | 32 mm |
| Sensing element position | 5 mm from tip |
| Sheath material | Inconel |
| Probe diameter | 6.35 mm |
| Probe length | 305 mm |
| Electrical connection | Four-wire |
| Cable length | 2 m |
| Insulation resistance | >1000 MΩ at room temperature |
| Handle temperature range | −50 °C to +180 °C |
| Calibration | ISO/IEC 17025 accredited calibration included |
Calibration with Precision Thermometer Readouts
The Additel AccuMac AM 1660 can be connected to compatible precision resistance thermometer readouts.
For accurate temperature measurements, a readout with suitable resistance measurement accuracy and four-wire measurement capability is recommended.
The thermometer can be used with compatible Additel reference thermometer readouts, including the Additel 282 and Additel 286.
These instruments support professional temperature measurement and calibration applications.
The measurement uncertainty of the complete system depends on the thermometer, the readout and the calibration conditions.
For demanding applications, the thermometer’s individual calibration coefficients should be used whenever supported by the connected instrument.
Applications in Temperature Calibration Laboratories
The Additel AccuMac AM 1660 is particularly suitable for professional temperature calibration laboratories.
Typical applications include comparison calibration of industrial resistance thermometers and verification of temperature calibration equipment.
The thermometer can be used as a reference sensor in suitable temperature baths and dry block calibrators.
Its wide temperature range allows calibration procedures to be performed across numerous temperature points.
The accredited calibration certificate provides the traceability required for professional metrology applications.
Industrial Temperature Measurement
The Additel AccuMac AM 1660 is also suitable for industrial temperature measurement.
Its robust Inconel sheath provides protection against demanding operating conditions.
Typical applications include industrial heating systems, thermal processing, temperature monitoring and quality assurance.
The thermometer is particularly useful when standard industrial temperature sensors do not provide sufficient measurement accuracy.
Calibration Service by europascal
Regular calibration is essential for maintaining accurate and traceable temperature measurements.
europascal provides professional calibration services for temperature measuring instruments and calibration equipment.
The Additel AccuMac AM 1660 is supplied with an ISO/IEC 17025 accredited manufacturer calibration.
For long-term measurement reliability, periodic recalibration is recommended.
When the thermometer is used as a reference standard, the measurement uncertainty should consider:
- Calibration uncertainty of the thermometer
- Resistance measurement uncertainty of the readout
- Long-term drift
- Short-term stability
- Temperature hysteresis
- Self-heating effects
- Immersion depth
- Heat conduction along the probe stem
- Measurement repeatability
These contributions should be evaluated according to the applicable calibration procedure.
For professional calibration services and metrological traceability, visit the europascal Calibration Service.
Why Choose the Additel AccuMac AM 1660?
The Additel AccuMac AM 1660 combines precision temperature measurement with robust industrial construction.
Its temperature range from −200 °C to +670 °C makes it suitable for a wide variety of calibration and measurement applications.
An accuracy better than 0.035 °C at 0 °C and excellent short-term stability provide reliable measurement performance.
The specially designed wire-wound platinum sensing element helps minimize contamination effects and maintain stable resistance characteristics.
The Inconel protective sheath provides excellent mechanical durability.
Four-wire resistance measurement minimizes errors caused by lead resistance.
The included ISO/IEC 17025 accredited calibration provides metrological traceability.
For calibration laboratories and industrial users requiring a reliable precision platinum resistance thermometer, the Additel AccuMac AM 1660 provides an excellent combination of accuracy, stability and durability.
europascal supports customers with professional temperature calibration equipment, technical advice and calibration services.
Typical Applications for the Additel AccuMac AM 1660
The Additel AccuMac AM 1660 is suitable for numerous temperature measurement and calibration applications.
Typical applications include:
- Precision temperature measurement
- Industrial temperature calibration
- Pt100 calibration
- RTD calibration
- Comparison calibration
- Reference temperature measurement
- Calibration bath measurements
- Dry block calibrator measurements
- Industrial quality assurance
- Temperature metrology
- Thermal processing
- Laboratory temperature measurement
- Industrial maintenance
- Calibration laboratories
- Field calibration
The combination of excellent accuracy, wide temperature range, low drift and robust construction makes the Additel AccuMac AM 1660 a professional solution for demanding temperature measurement applications.
Find more Additel products at europascal.
Manufacturer information for the Additel AccuMac AM 1660 can be found on the official Additel website.
