Temperature Calibrators
- Technology
- Fibre optic temperature sensors
- Partner
- Advanced Energy
The 940 Series handheld temperature calibrators bring lab-quality thermocouple calibration directly to the factory floor, maintenance area, or field service site. These battery-powered instruments support precise thermocouple sensor calibration and verification without requiring bulky bench equipment. Depending on the model, they support up to 14 thermocouple types plus millivolt capability, helping one device cover many common industrial temperature applications. The range is built for simple one-handed operation, with intuitive controls, preset memory, and fast access to common calibration points. Models are available for standard use, hazardous areas, and wireless datalogging workflows.
The 948A adds Bluetooth connectivity for digital data capture, while the 947A provides intrinsically safe operation for regulated environments. Across the range, users benefit from high accuracy, fine resolution, long battery life, and rugged construction. Each unit is supplied with ISO 17025 calibration documentation, with AMS2750-compliant service available for applications that require additional compliance support.
The 940 Series is designed for technicians and engineers who need dependable thermocouple calibration outside the lab. Typical applications include aerospace, automotive, food processing, plastics, and chemical operations where sensor accuracy directly affects quality, safety, and compliance.
With models for standard, wireless, and hazardous-area use, the range gives you a practical way to match calibrator capability to the job without compromising precision or portability.
Range features
A high level overview of what this range offers
- Broad thermocouple compatibility – Supports up to 14 thermocouple types plus mV capability, allowing one calibrator to cover a wide range of sensor standards and calibration tasks.
- Laboratory-grade accuracy – Delivers high precision of ±0.005% of reading + 5 µV with 0.01 °C resolution for demanding temperature calibration work.
- Long battery life – Runs for approximately 500 hours on 3 AA batteries, reducing downtime during field service and plant maintenance.
- Simultaneous source and measure – Lets users source a thermocouple signal while measuring at the same time, helping speed calibration of transmitters, controllers, and indicators.
- Wireless datalogging option – The 948A adds Bluetooth Low Energy connectivity and internal logging support for easier digital record-keeping and reporting.
- Intrinsically safe model available – The 947A is certified for hazardous environments, making it suitable for use where flammable gases or vapours may be present.
- Rugged handheld construction – Durable industrial design, sealed keypad, and one-handed ergonomics make the series practical for demanding on-site use.
- Traceable calibration included – Every unit is supplied with an ISO 17025 calibration certificate, with AMS2750-compliant calibration service available as an option.
- Preset memory and simple operation – User-programmable preset values, shortcut keys, and a clear display make repetitive calibrations faster and easier.
Downloads
for Temperature Calibrators
What’s in this range?
All the variants in the range and a comparison of what they offer
| Specification | 940A | 945A | 947A | 948A |
|---|---|---|---|---|
Thermocouple types supported | 4 types: J, K, T, E | 14 types: J, K, T, E, N, B, R, S, G, C, D, L, P, U + mV | 14 types: same as 945A + mV | 14 types: same as 945A + mV |
Data logging | No | No | No | Yes, internal memory |
Wireless connectivity | No | No | No | Yes, Bluetooth LE |
Hazardous area certified | No | No | Yes, ATEX / IECEx / UL / CSA | No |
Accuracy | ±0.005% + 5 µV | ±0.005% + 5 µV | ±0.005% + 5 µV | ±0.005% + 5 µV |
Resolution | 0.01 °C; 1 µV | 0.01 °C; 1 µV | 0.01 °C; 1 µV | 0.01 °C; 1 µV |
Operating temperature range | –20 °C to +55 °C | –20 °C to +55 °C | –20 °C to +55 °C | –20 °C to +55 °C |
Battery life | ~500 hours (3 × AA cells) | ~500 hours (3 × AA cells) | ~500 hours (3 × AA cells) | ~500 hours (3 × AA cells) |
Thermocouple connector | Miniature TC connector | Miniature TC connector | Miniature TC connector | Miniature TC connector |
FAQs
for Temperature Calibrators
The 940 Series supports a broad range of thermocouple standards. The 945A, 947A, and 948A support 14 thermocouple types — J, K, T, E, N, B, R, S, G, C, D, L, P, and U — plus millivolt signals. The 940A supports the four most common types: J, K, T, and E. This lets users choose a model that fits either basic or wider multi-sensor calibration needs.
Each model delivers laboratory-grade accuracy of ±0.005% of reading + 5 µV and provides 0.01 °C resolution. This level of precision makes the range suitable for demanding calibration work where confidence, repeatability, and traceability are important.
Yes. The 940 Series is built specifically for portable field and plant use. Each unit operates on 3 AA batteries with an approximate 500-hour battery life, helping reduce interruptions during routine service work, shutdowns, and mobile calibration tasks.
Yes. The 947A is the intrinsically safe version in the range. It is intended for use in hazardous environments and is listed with ATEX, IECEx, UL, and CSA certifications, making it well suited to industries such as chemical processing, oil and gas, and other regulated plant areas.
Simultaneous source and measure allows the calibrator to simulate a thermocouple signal while measuring a device response at the same time. This is especially useful when calibrating transmitters, controllers, and indicators because it reduces the need for multiple instruments and speeds the overall workflow.
The 948A adds Bluetooth Low Energy connectivity and datalogging capability. It is designed for users who want easier digital capture of calibration data, simplified record-keeping, and more efficient reporting. The other models do not include built-in wireless communication or internal data logging.
Yes. Each unit is supplied with an ISO 17025 calibration certificate as standard for traceability and confidence from first use. For applications with stricter compliance requirements, AMS2750-compliant calibration service is also available as an option.
