Thermalert 4.0 Series Pyrometers
Rugged, smart and easy-to-install
- Improve process control with wide choice of spectral ranges and focus distances designed specifically for your application
- Reduce setup time with plug-and-play technology and integrated laser sighting
- Protect your process and employees with intrinsically safe ATEX/IECEx/CCC-IS certification
- Choose from options of analogue and digital communication protocols
Designed for harsh environments, Thermalert 4.0 Series Pyrometers provide accurate, real-time temperature measurements for process control applications spanning metals, plastics, glass, oil and gas, food and more. This robust solution comes in a compact, integrated package that is easy to install and operate, so you can take your process control to the next level.
The Thermalert 4.0 Series Pyrometers from Fluke Process Instruments include numerous integrated infrared temperature sensors with our widest selection of spectral ranges that can be used for a wide variety of process control applications.
Each pyrometer conforms to Industry 4.0 standards, combines innovative digital technology with standard two-wire installations for all setups and can be ordered with ATEX and IECEx certification. With multiple communication options, this smart infrared measurement sensor provides the features you need to understand your temperature data and control your unique process in a compact, integrated package that is easy to install and operate.
Thermalert 4.0 Pyrometers
With the ability to withstand ambient temperatures up to 85°C (185°F) without extra cooling, as well as multiple wavelength options to support a broad range of applications, Thermalert 4.0 Series Pyrometers can provide a complete picture of even the harshest environments.
Each pyrometer is designed with best-in-class optical resolution, which varies based on the application, and multiple communication options to meet your process requirements – including 2-wire loops powered by RS485, digital outputs (Ethernet, EthernetIP, ProfinetIO) and analog outputs.
Laser sighting, ATEX/IECEx certification and a broad range of accessories (including high temperature enclosures) are also available for all models.
Key Features:
- Durable stainless steel IP65 / NEMA4 enclosures
- Read temperature ranges from -40 °C to 2300 °C (-40 ºF to 4172 °F)
- Withstands ambient temperatures from -20 °C to 85 °C (-4 °F to 185°F)
- Intrinsically safe models (ATEX/IECEx/CCC-IS certification)
- Integrated laser sighting
- Galvanic isolated outputs
- Plastic lens option for food applications
- Analog input for ambient compensation and adjusting emissivity setting
- Multiple communication interfaces:
- 2-wire loop powered for analog communication
- 2-wire loop options specifically for HART protocols
- 4-wire (Fieldbus Support – Ethernet, EthernetIP, ProfinetIO)
- 12-wire M16 and 6-pin terminal block for digital communication (RS485)
- Advanced signal processing
- Wide choice of focus distances
DataTemp® Multidrop Software
Thermalert 4.0 infrared sensors can be integrated with your process control system with the DataTemp® Multidrop Software. Each software solution provides you with the tools you need to “plug and play,” by quickly configuring your sensors and then monitoring temperatures with a real-time graphical display.
The software’s bar graph feature shows temperature profiles at various spots across your process. The program can also record and archive process temperatures, as well as show high- and low-alarms, making it easy to identify when conditions are beyond your set parameters.
Technical Specs for Thermalert Models: LT, G5, G7, P7, P3
| Model Number | LT | G5 | G7 | P7 | P3 |
|---|---|---|---|---|---|
| Temperature Range | LTD-04 | G5-30 | G7-70 | P7-30 | P3-20 |
| Spectral Response | 8 to 14 µm | 5 µm | 7.9 µm | 7.9 µm | 3.43 µm |
| System Accuracy | for Tmeas > 0°C (32°F): ±1% of reading or ±1.0°C (2.0°F) | for Tmeas > 75°C (167°F): ±(3°C + 1% of reading) | |||
| Repeatability | ±0.3°C (0.6°F) or 0.3% of reading | ±1°C (2°F) or 0.5% of reading | |||
| Response Time | LT-07, LT-15, LTD-04: 150ms LT-30, LTB-30: 30ms LT-50, LT-70: 130ms | G5-30, G5-70: 60ms | G7-70: 130ms | P7-30: 130ms | P3-20: 130ms |
| Optical Resolution (D:S) | LTD-04: 4:1 LT-07: 7:1 LT-15: 15:1 LT-30, LTB-30: 33:1 LT-50: 50:1 LT-70: 70:1 | G5-30: 33:1 G5-70: 70:1 | G7-70: 70:1 | P7-30: 33:1 | P3-20: 20:1 |
| Focus Distance | LT-07: CFO 50mm (2in) LT-15, LTD-04: SFO 1520mm (60in) LT-30, LTB-30: SFO 1520mm (60in) CF1 76mm (3in) CF2 200mm (7.9in) LT-50: SFO 1520mm (60in) CF2 200mm (7.9in) LT-70: SF2 1250mm (49in) CF2 200mm (7.9in) | G5-30: | G7-70: | P7-30: | P3-20: |
| Smallest Measurement Spot | LT-07: CF 7.1mm (0.28in) LT-30, LTB-30: CF1 2.3mm (0.09in) CF2 6.1mm (0.24in) LT-50: CF2 4mm (0.16in) LT-70: SF2 17.9mm (0.7in) CF2 2.9mm (0.11in) | G5-70: | G7-70: |
| |
| Standards and Compliance | EC – Directive 2014/30/EU – EMC EC – Directive 2011/65/EU – RoHS Compliance amended by Directive (EU) 2015/863 EC – Directive 2014/34/EU – ATEX valid for models: T40-xx-xx-xxx-x-IS EC – Directive Nr. 1907/2006 – REACH amended by Directive (EU) 2020/2096 EN 61326-1: 2013 - Electrical measurement, control and laboratory devices - Electromagnetic susceptibility (EMC) EN 50581: 2012 - Technical documentation for the evaluation of electrical products with respect to restriction of hazardous substances (RoHS) EN 60079-0: 2019 Risk of explosion – part 0: general requirements (ATEX) EN 60079-11: 2012 Risk of explosion – part 11: device protection by intrinsic safety “I” (ATEX) UKCA - Conforms to UK Conformity. Except for units with intrinsically-safe rating. KCC - Electromagnetic Compatibility Applies to use in Korea only. Class A Equipment (Industrial Broadcasting & Communication Equipment) | ||||
Technical Specs for Thermalert Models: MT, HT, 3M, 2M, 1M, CO2, CO, NOX
| Model Number | MT | HT | 3M | 2M | 1M | CO2 | CO | NOX |
|---|---|---|---|---|---|---|---|---|
| Temperature Range | MT-30 | 500 to 2000 °C | 3M-70 | 2M-150 | 1ML-150 | C02-30 | C0-30 | NOX-30 |
| Spectral Response | 3.9 µm | 2.2 µm | 2.3 µm | 1.6 µm | 1 µm | 4.24 μm | 4.64 μm | 4.47 μm |
| System Accuracy | for Tmeas > 0°C (32°F): ±1% of reading or ±1.0°C (2.0°F) | ±(2°C + 0.5% of reading) | ± 1.0% of reading for temperature > 700°C | ± 1.0% of reading or ± 5 K | ± 1.0% of reading + 2°C | |||
| Repeatability | ±0.3°C (0.6°F) or 0.3% of reading | ±1°C (2°F) or 0.25% of reading | ± 0.5% of reading for Tmeas > 700°C | ± 0.5% of reading or ± 2.5°C | ± 0.5% of reading | |||
| Response Time | MT-30, MT-70: | HT-60: | 3M-70: | 2M-150, 1ML-150, 1MH-150: | C02-30, C0-30, NOX-30: | |||
| Optical Resolution (D:S) | MT-30: | HT-60: | 3M-70: | 2M-150, 1ML-150, 1MH-150: | C02-30, C0-30, NOX-30: | |||
| Focus Distance | MT-30: SF0 1520mm (60in) CF1 76mm (3in) CF2 200mm (7.9in) MT-70: SF2 1250mm (49in) CF1 76mm (3in) CF2 200mm (7.9in) | HT-60: SF0 1520mm (60in) CF1 76mm (3in) CF2 200mm (7.9in) | 3M-70: SF0 1520mm (60in) CF2 200mm (7.9in) | 2M-150, 1ML-150, 1MH-150: | C02-30, C0-30, NOX-30: | |||
| Smallest Measurement Spot | MT-30: | HT-60: | 3M-70: CF2 2.9mm (0.11in) | 2M-150, 1ML-150, 1MH-150: | ||||
| Standards and Compliance | EC – Directive 2014/30/EU – EMC EC – Directive 2011/65/EU – RoHS Compliance amended by Directive (EU) 2015/863 EC – Directive 2014/34/EU – ATEX valid for models: T40-xx-xx-xxx-x-IS EC – Directive Nr. 1907/2006 – REACH amended by Directive (EU) 2020/2096 EN 61326-1: 2013 - Electrical measurement, control and laboratory devices - Electromagnetic susceptibility (EMC) EN 50581: 2012 - Technical documentation for the evaluation of electrical products with respect to restriction of hazardous substances (RoHS) EN 60079-0: 2019 Risk of explosion – part 0: general requirements (ATEX) EN 60079-11: 2012 Risk of explosion – part 11: device protection by intrinsic safety “I” (ATEX) UKCA - Conforms to UK Conformity. Except for units with intrinsically-safe rating. KCC - Electromagnetic Compatibility Applies to use in Korea only. Class A Equipment (Industrial Broadcasting & Communication Equipment) | |||||||
Laser: laser available per standard (except LT-07, LT-15, LTB-30, LTD-04, P3, C02, CO and NOX models). 2-wire devices require an additional power supply via USB.
Thermalert 4.0 Pyrometers can be used across numerous industries and are ideal for process monitoring and control, product monitoring and more in applications spanning metals, plastics, oil and gas, glass and food. Several examples of where Thermalert 4.0 can be used include, but are not limited to, the following list below.
| Thermalert 4.0 Model Spectral Response | Applications |
|---|---|
LT 8-14 µm | Thick plastics, asphalt, carpeting, coated paper, thermoforming, food, coke, coal, cement |
G5 5 µm | Glass surface temperature for bending, tempering, annealing and sealing |
G7 7.9 µm | Ultra-thin drawn glass |
P3 3.43 µm | Extrusion and converting of thin films: polyethylene, polypropylene, and polystyrene |
P7 7.9 µm | Production and converting of films of polyester (PET), fluoroplastic, Teflon®, acrylic, nylon (polyamide) |
MT 3.9 µm | Furnace refractory, flame hardening and brazing |
HT 2.2 µm | Ferrous and nonferrous metals, induction heating, furnaces, laboratory research |
1M 1 µm | Semiconductor, metals forging, molten glass |
2M 1.6 µm | Non ferrous and unoxidized metals, galvanizing lines and steel annealing |
3M 2.3 µm | Rolling mills, wire coating and annealing, laser welding, plastic tubing extensions |
C02 4.24 μm | Flame or flue gas temperature measurement for incineration plants, boilers or power station |
C0 4.64 μm | Flame or flue gas temperature measurement for incineration plants, boilers or power station |
NOX 4.47 μm | Flame or flue gas temperature measurement for incineration plants, boilers or power station |
Atex certification and related applications
| Industry | Application | Atex Type of Certification |
|---|---|---|
Steel | Galvanizing, annealing, plating and coating with hydrogen atmosphere | Gas II 2G Ex ib IIC T4 Gb |
Solar | Hydrogen reduction | Gas II 2G Ex ib IIC T4 Gb |
Petrochemical | Sulfur recovery, boilers, crackers, reactors, pipes, flare control | Gas II 2G Ex ib IIC T4 Gb |
Chemical | Fertilizer, starch, alcohols, flour, vinyl | Gas II 2G Ex ib IIC T4 Gb |
| Fire detection | Offshore installations, storage areas, indoor coke handling, dust extraction | Dust II 2D Ex ib IIIC T135°C Db IP65 |
| Storage terminals | Storage of coal, wood pellets, sulfur, petroleum coke, starch, fluids | Dust II 2D Ex ib IIIC T135°C Db IP65 |
| Lens Protectors and Air Purge Collars Lens protectors and air purge collars are independent accessories that help ensure dust, moisture and airborne particles are kept away from the pyrometer lens. |
| Water- or Air-Cooled Housing The water- and air-cooled housing options can be specified for use in ambient temperatures up to 175°C (315°F). |
| ThermoJacket For harsher environments, the ThermoJacket can protect the sensor in ambient temperatures of up to 315°C (600°F). It completely encloses the pyrometer, combining thermal and mechanical protection while air purging the lens. Pyrometers can be installed or removed while the ThermoJacket is in its mounted position. |