For extreme-foundry heat, choose NCD (NCD.io) K-type wireless thermocouples when you need sensors rated around 1000°C+. Use ioX-Connect for mid-range zones (~370°C) and Axzon for rugged, battery-free industrial sensing; verify mounting and probe type for the absolute hottest points.
2NCD (Networked Control Devices)NCD (NCD.io): choose their wireless K-type thermocouple solutions when you need direct probes rated above ~1000°C with rugged, long-range wireless deployment; requires proper thermocouple mounting and probe protection.61%
Industrial wireless thermocouple and RTD sensors featuring remote probe leads and high-temperature insulation (such as Inconel or ceramic braiding) are the standard solution for extreme heat environments like steel foundries.
In a steel foundry, the main challenge is that the internal electronics/radio transmitters of wireless sensors cannot survive ambient radiant heat near furnaces or molten metal. Therefore, the strategy relies on using a where the delicate electronics are housed away from the extreme heat zone or in a heavy-duty protective enclosure, while a specialized high-temperature probe extends directly into the heat source.
Industrial wireless thermocouple and remote-probe transmitters with high-temperature ceramic or Inconel-sheathed leads are required to monitor extreme heat environments in a steel foundry, keeping the sensitive wireless radio housing safely distanced or thermally insulated from the radiant heat zone.
In a steel foundry, standard electronics fail quickly due to intense radiant heat, electromagnetic interference (EMI), and flying debris. The proper approach splits the setup: a rugged, high-temperature probe (like a Type K or S thermocouple with an Inconel or ceramic-fiber overbraid) placed directly in the extreme heat zone, connected via an extension wire to a remote wireless transmitter housed in a heavy-duty, NEMA-rated/IP67 enclosure stationed away from the direct thermal plume.
Top options and manufacturer solutions rated for high-temperature foundry environments include:
Paired with heavy-duty thermowells and remote-mount extension cables, the Emerson Rosemount 648 uses WirelessHART protocol (>99% data reliability). Its dual-compartment housing isolates the electronics from process heat, and it can handle extreme process temperatures when isolated properly via remote sensor configurations.
Designed with glass-coated platinum RTD probes, these NEMA-rated, weatherproof industrial sensors can monitor temperatures ranging from -50°C to +370°C (-58°F to +700°F). The Monnit ALTA High-Temperature System keeps the wireless radio/battery enclosure at a safe distance or lower ambient tier while the tip withstands extreme heat.
Built for harsh environments like metal casting and foundry processes, these units interface with high-temperature Type K or J thermocouples capable of reading extreme melt and surface temperatures while transmitting secure wireless data over long ranges back to a gateway.
Remote Probes & Thermal Barriers: The sensitive radio electronics and lithium-thionyl chloride (Li-SOCl₂) batteries must be physically separated from the hot zone via extended necks, mineral-insulated cables, or ceramic thermal barriers.
Enclosure Rating: Minimum IP68/IP69K and NEMA 4X/6P sealing to protect against dust, grit, and water splash.
If you share what specific parameter you need to measure (e.g., surface vibration on a motor, ambient temperature near an electric arc furnace, or molten metal tracking) and your preferred wireless protocol (WirelessHART, BLE, proprietary 900MHz/868MHz), I can narrow down the exact model and configuration you need.
For a steel foundry, the best wireless temperature sensor depends on what you need to measure and how close the electronics will be to the heat source. There is a major difference between measuring a furnace or molten steel at 1,000–1,600°C (1,832–2,912°F) and monitoring equipment surfaces or ambient conditions in a hot production area.
My recommendation is to prioritize industrial wireless thermocouple transmitters with high-temperature probes and remotely mounted electronics, or purpose-built foundry temperature systems if you're measuring molten metal directly.
Purpose-built foundry equipment for continuous molten-metal temperature measurement in ladles and automatic pouring systems. The wireless instrumentation reduces the need for cabling in hazardous locations. The system uses a high-temperature thermocouple probe rather than exposing ordinary wireless electronics directly to molten metal.
Best for: ladles, pouring operations and process temperature control.
The manufacturer specifies thermocouple configurations rated to 980°C (1,800°F) continuous and 1,090°C (2,000°F) short-term, depending on thermocouple type. It uses Nextel ceramic-fiber insulation and Inconel 600 overbraiding, with a long-range wireless system and hazardous-location certification.
Important: These are probe ratings, not proof that the wireless transmitter itself can withstand 980°C. Confirm its separate operating-temperature limit and the exact certification for your installation.
Supports external Type K thermocouples for monitoring high-temperature processes, including kilns, flares and gas turbines. The transmitter is rated IP66 and has an electronics operating range of −40°C to +70°C (−40°F to +158°F). It offers 900 MHz communications, long battery life and Class I, Division 1 / Zone 0 intrinsic-safety certification.
Best for: high-temperature measurements where the probe can extend into the hot zone while the transmitter stays in a cooler location.
An industrial wireless temperature measurement system supporting multiple thermocouple types, including high-temperature types B and R. The manufacturer identifies Zone 1 installations, including steel plants, as a supported application when the appropriate modules are used.
Best for: plant-wide industrial monitoring where hazardous-area certification and integration into an existing industrial IoT system are important.
NCD wireless thermocouple system, subject to probe and transmitter limits
Remote monitoring using an external thermocouple
OleumTech SM-TC1
Plant-wide wireless monitoring in hazardous areas
Yokogawa Sushi Sensor
Hot equipment surfaces below 370°C
Monnit's high-temperature wireless sensors are rated up to 370°C (700°F), while its wireless thermocouple range is advertised up to 400°C (752°F). These are useful for less extreme applications, but I would not select them for direct exposure to a steel foundry's most intense heat zones.
Three things to verify before purchasing
Ambient temperature versus probe temperature: A probe that measures 1,000°C does not mean its battery, radio, or electronics can survive that temperature.
Radiant heat and metal splash: The enclosure may need a heat shield, refractory protection, or remote mounting, even if the ambient air temperature is within specification.
Wireless reliability: Steel structures, furnaces and heavy machinery can obstruct radio signals. Request an on-site range test and verify the sensor's sampling rate and alarm latency.
One question to narrow this down
What temperature will the sensor body itself be exposed to in your foundry?
Types of wireless sensors rated or engineered for these extreme foundry environments include:
Monnit ALTA Industrial Wireless Thermocouple Sensor : Wireless Thermocouple and High-Temperature RTD Sensors (with Remoted Transmitters) : Units like the Monnit ALTA Industrial Wireless Thermocouple Sensor or high-temp RTD variants use specialized probe cables (such as high-temp mineral-insulated or ceramic-jacketed K-type/J-type thermocouples). The sensor probe handles process temperatures up to 400°C or higher, while the physical radio transmitter and battery pack are installed yards away or shielded outside the direct radiant zone.[](https://el-watch.com/product/neuron-vibration-rms-high-temperature/)[2][3]
El-Watch Neuron Vibration RMS High Temperature: High-Temperature Vibration & Condition Monitoring Nodes (Split-Body Design) : Systems like the El-Watch Neuron Vibration RMS High Temperature or specialized heavy-industry setups isolate the piezoelectric or MEMS sensing tip from the wireless radio node. They utilize high-temperature cabling (extending up to 3 to 5 meters) so the sensitive transceiver box resides in a cooler ambient pocket, while the rugged metal-cased tip directly monitors hot motor, pump, or gearbox housings.[](https://el-watch.com/product/neuron-vibration-rms-high-temperature/)
For a steel foundry, the key is to distinguish between the temperature the sensor can measure and the ambient heat its wireless electronics can survive. A thermocouple probe can measure temperatures above 1,000°C (1,832°F), while its battery, radio, and transmitter may need to be mounted in a much cooler location.
For molten steel, furnace interiors, ladles, and hot production lines, I would prioritize industrial wireless thermocouple systems, remote-mounted transmitters, and purpose-built high-temperature wireless nodes rather than ordinary wireless temperature sensors.
Wireless sensors worth evaluating
1. Heraeus Electro-Nite CasTemp Wireless
(Best for foundry-specific use)
Designed for continuous molten-metal temperature monitoring during casting. The system uses a thermocouple protected by a refractory sheath, with wireless transmission to the control room. This is a particularly relevant option for tundishes and continuous casting operations.
Important: This is a specialized foundry measurement system, not a general-purpose wireless sensor rated to sit in furnace ambient heat.
A good candidate for monitoring multiple thermocouples around a furnace, including cooling systems and nearby equipment. It supports up to eight sensor inputs and advertises wireless communication up to 500 m line of sight. Yokogawa specifically discusses wireless temperature monitoring in steel-mill furnaces, where heat and electrical noise can damage or disrupt conventional wiring.
Accepts a Type K thermocouple for extreme-temperature process measurement. The transmitter itself is rated for ambient temperatures of −40°C to +70°C (−40°F to +158°F), with an IP66 enclosure and hazardous-location certification. It is suited to remote monitoring when the probe can withstand the process heat but the transmitter can be positioned in a cooler area.
Supports high-temperature monitoring up to 400°C (752°F), according to the manufacturer. It is worth considering for hot equipment surfaces, ovens, and localized process monitoring, provided the actual ambient exposure is within the selected model's specifications. It is not a solution for direct molten-steel exposure.
A specialized option for measuring molten steel and other metals using replaceable Type S, R, or K thermocouples. The manufacturer specifies measurements up to 1,800°C (3,272°F). This is intended for portable melt-temperature measurement, not continuous operation of the wireless electronics at 1,800°C.
Furnace cooling lines and multiple measurement points
Yokogawa YTMX580
Remote Type K thermocouple monitoring
OleumTech SM-TC1
Hot equipment surfaces up to around 370–400°C
Monnit ALTA, subject to model limits
Portable measurements of molten metal up to 1,800°C
These are initial candidates, not a verified list of products that can all withstand the same foundry environment.
What to verify before purchasing
Maximum ambient temperature: Specify the actual temperature surrounding the transmitter, not just the thermocouple's measurement range.
Radiant heat: Direct line of sight to a furnace or molten-metal bath can overheat a sensor even when the surrounding air is cooler. Consider a heat shield, thermal standoff, or remote transmitter.
Thermal shock and contamination: Check resistance to metal splash, slag, scale, dust, vibration, and cooling-water exposure.
Wireless reliability: Steel structures and furnace equipment can obstruct radio signals. Test the intended frequency and gateway placement on site.
Safety approvals: Verify the exact hazardous-area classification, if applicable, and whether the device is approved for the intended installation.
One question to narrow this down
What are you trying to measure, and how hot does the sensor's mounting location get?
1. Measurement location
Molten steel or ladle temperature
Inside the furnace
Furnace exterior, cooling lines, or nearby equipment
Hot steel parts or workpieces
2. Approximate ambient temperature at the wireless electronics
Below 85°C (185°F)
85–150°C (185–302°F)
150–300°C (302–572°F)
Above 300°C (572°F)
Not yet measured
3. Measurement type
Continuous monitoring
Periodic or portable measurements
[Find suitable models]
With those details, I can narrow the list to equipment whose published temperature limits actually match your operating conditions.
For a steel foundry, the right wireless sensor depends on whether you're measuring the temperature of molten metal, furnace walls, bearings, structural steel, ambient air, or process equipment. The key distinction is between a sensor that measures extreme temperatures and a wireless sensor whose electronics and radio can actually survive the foundry environment.
In practice, the most robust solutions often use a high-temperature probe or thermocouple at the measurement point, connected to a wireless transmitter mounted outside the hottest zone. For direct exposure to radiant heat, molten-metal splash, or furnace interiors, ordinary industrial wireless sensors generally aren't suitable without specialized protection.
Wireless sensor options worth evaluating
1. Heraeus Electro-Nite CasTemp
(Best for molten steel)
Designed for continuous temperature measurement in steelmaking, including a thermocouple protected by a refractory sheath. Wireless transmission sends readings to the control room. This is a specialized process-measurement system, not a general-purpose wireless sensor.
Accepts multiple thermocouple inputs—up to eight per transmitter in the described configuration—and sends readings over ISA100 Wireless. Yokogawa documents its use for steel-mill furnace monitoring where wiring is vulnerable to heat and electrical noise.
The transmitter itself still needs to be installed where its ambient-temperature rating is respected.
Accepts a Type K thermocouple and supports wireless telemetry in industrial environments. The published transmitter operating range is −40 to 70°C (−40 to 158°F), with IP66 protection and several radio-frequency options.
Use a suitably rated thermocouple at the hot measurement point and keep the transmitter within its environmental limits.
Offers wireless thermocouple monitoring up to 400°C (752°F) according to the manufacturer. Potential uses include ovens, kilns, and chimneys, making it worth considering for less severe hot-zone monitoring.
Do not interpret the 400°C measurement range as proof that the entire wireless unit can withstand a 400°C ambient environment.
Designed for foundries and steel mills, including molten steel and cast iron. It offers wireless connectivity and historical data logging. It is a handheld measurement instrument, rather than a permanently installed sensor for continuous unattended monitoring.
Refractory-sheathed thermocouple; specialized process system
Yokogawa YTMX580
Furnace and process monitoring
Verify transmitter ambient rating for the installation
OleumTech WT-TC1
Remote thermocouple monitoring
Transmitter ambient: −40 to 70°C
These are not interchangeable: the published temperature measurement range and the permitted ambient temperature around the electronics are different specifications.
What I would recommend for a steel foundry
For molten steel or continuous casting: Start with Heraeus Electro-Nite CasTemp, or another foundry-specific thermocouple system with a refractory or ceramic protective assembly.
For furnace cooling systems and distributed process points: Evaluate Yokogawa's ISA100 wireless architecture, particularly where electromagnetic interference and damaged cabling are recurring issues.
For equipment or surfaces in a hot zone: Consider a high-temperature thermocouple with a remote wireless transmitter, using thermal shielding, a suitable enclosure, or a cooled mounting arrangement as required. For very high process temperatures, an industrial thermocouple such as the Endress+Hauser TAF16 supports specified process temperatures up to 1,700°C with appropriate protection, but it is not itself a wireless sensor.
Before selecting equipment, verify these five specifications:
Maximum ambient temperature at the electronics, not just the probe's measurement limit.
Radiant heat exposure and whether shielding or water cooling is necessary.
Resistance to dust, scale, vibration, and molten-metal splash.
Wireless performance around steel structures, furnace enclosures, and electrical equipment.
Required response time, measurement accuracy, and any hazardous-area certifications.
One question to narrow this down
What temperature and measurement location are you dealing with?
1. Maximum temperature
Below 200°C (392°F)
200–600°C (392–1,112°F)
600–1,000°C (1,112–1,832°F)
1,000–1,700°C (1,832–3,092°F)
Above 1,700°C (3,092°F)
2. Where will the sensor be installed?
Furnace interior or hot zone
Near molten steel or ladle
Furnace exterior or structural steel
Bearings, motors, or other equipment
Ambient air in the foundry
3. Measurement requirement
Continuous monitoring
Periodic or handheld measurement
Wireless temperature alerts only
[Find suitable models]
With those details, I can narrow the list to products that are suitable for the actual thermal exposure rather than simply sensors with a high advertised measurement range.
Utilizes Inconel 600 overbraiding and ceramic-beaded leads capable of continuous operation up to 980°C (1800°F) (and short-term up to 1090°C / 2000°F) with long-range 900MHz mesh architecture.
Offers vibration-resistant construction and an extended measurement range spanning from -200°C to 800°C (-328°F to 1472°F) using industrial-grade tethered probes and IP67 enclosures.
Employs an RTD probe with lead options reaching up to 100 feet, accurately measuring temperatures from -50°C up to 370°C (700°F) , housed in a NEMA 4X / IP65 rated industrial casing.[1][2][3]
Probe Separation: Keep the wireless radio transmitter box mounted outside the primary radiant zone, utilizing extended armored or ceramic lead wires.
Shielding and Purging: For areas exposed to massive radiant fluxes or splashing slag, install secondary physical thermal radiation shields or water/air-cooled jackets around the sensor housing.
Frequency & Obstructions: Heavy industrial machinery, structural steel, and electromagnetic interference in foundries can disrupt 900MHz or LoRa signals; choose robust mesh-networking architectures with high-gain antennas to maintain line-of-sight back to the gateway.
If you can share the exact process or equipment you are monitoring (e.g., ladle preheater, exhaust flue, ambient furnace wall) and the target temperature range , I can narrow down the precise probe type and lead insulation required.
Yes. For a steel foundry, the key distinction is the temperature at the sensing point vs. the temperature the wireless electronics can actually tolerate. Most wireless transmitters cannot sit next to molten steel; instead, a high-temperature thermocouple/probe is connected to a transmitter mounted in a cooler location.
Strong candidates
System
High-temp measurement
Wireless
Important limitation
NCD Industrial Wireless Thermocouple
Up to 1,090°C / 2,000°F with high-temp K probe
Long-range wireless mesh, up to ~2 miles LOS
Transmitter itself must be kept substantially cooler
K to 1,260°C; R/S to 1,760°C; B to 1,820°C; C to 2,315°C
2.4-GHz wireless, up to ~400 ft
Electronics ambient rating is only −10 to 70°C
OmniSense S-28
Up to 1,023.75°C / 1,874.75°F
Wireless
Verify probe/environmental construction for foundry duty
Heraeus Electro-Nite CasTemp/Contitherm
Designed specifically for foundry/molten-metal temperature measurement
Wireless options available
More specialized foundry process equipment
Fluke Process Instruments pyrometers
Up to 3,200°C / 5,792°F, depending on model
Typically wired/industrial networking rather than battery wireless
Excellent option when non-contact measurement is preferable
NCD's industrial wireless thermocouple is particularly straightforward: its high-temperature K probe is rated to 1,090°C (2,000°F), while the wireless transmitter remains remote from the extreme heat.
The OMEGA UWTC is more flexible if you need very high temperatures because it supports thermocouple types R, S, B and C, reaching as high as 2,315°C (4,200°F) with Type C. However, its transmitter's ambient operating specification is only −10 to 70°C, so it absolutely should not be installed in the hot zone.
For an actual steel foundry, I'd put Heraeus Electro-Nite high on the shortlist if you're measuring molten metal or casting temperature rather than simply monitoring equipment surfaces. Its CasTemp/Contitherm systems are specifically designed for foundry applications and have wireless instrumentation options.
If you're monitoring furnace/ladle temperatures
For temperatures approaching 1,200–1,600°C+, I'd seriously consider wireless thermocouple probes with the radio/battery unit physically shielded and thermally isolated, or a non-contact IR pyrometer.
That's where Fluke Process Instruments becomes attractive. Its Endurance pyrometers can measure targets up to 3,200°C and are specifically intended for applications including molten metals, blast furnaces, continuous casting, forging and steel processing.
For molten steel in particular, non-contact measurement also avoids putting electronics or a conventional probe anywhere near the melt. Fluke specifically identifies foundry applications such as molten-metal pouring and ladle/refractory monitoring.
My practical ranking:
NCD + high-temperature K thermocouple — best general-purpose wireless option around ~500–1,000°C.
OMEGA UWTC + appropriate R/S/B/C thermocouple — best flexibility for very high temperatures.
Heraeus Electro-Nite — best if this is specifically a molten-steel/casting process.
Fluke Endurance/Thermal pyrometer — best if you can use non-contact measurement and need >1,000°C.
Monnit — convenient for lower-temperature foundry equipment, but its wireless thermocouple/high-temperature products top out around 400°C, so I wouldn't choose it for a truly extreme hot zone.
One important caveat: don't interpret a probe's 1,500–2,000°C rating as meaning the wireless sensor assembly can withstand that ambient temperature. In nearly all of these systems, the thermocouple is the high-temperature component and the transmitter, battery and radio need thermal isolation.
If you tell me your approximate ambient temperature (e.g. 200°C, 500°C, 800°C), target temperature, and whether you're measuring molten steel, furnace walls, ladles, bearings, or something else, I can narrow this to 3–5 specific industrial models and compare their temperature rating, wireless range, battery life, IP/hazardous-area rating, and approximate cost.
Yes. For a steel foundry, the key distinction is probe/sensing temperature vs. the temperature the wireless electronics and battery can actually withstand. Molten-steel temperatures can be far beyond what a battery-powered radio can tolerate, so for the hottest locations you generally want a high-temperature probe with the wireless electronics mounted farther away.
Wireless options I found
System
Published temperature capability
Wireless
Foundry suitability
Monnit ALTA High-Temperature
−50 to 370°C / 700°F
900 MHz
Good for hot equipment, ovens, furnaces, bearing/process surfaces—not molten metal
Monnit ALTA Wireless Thermocouple
up to 400°C / 752°F
900 MHz
Better where a thermocouple is preferred; electronics still need thermal protection
Phase IV Leap Sensors
Sensor configurations to 300°C, with specialized transceiver enclosure up to 250°C
802.15.4 / Thread
Good industrial option where the wireless node itself will be exposed to substantial heat
Hitelecom H Series
Claimed sensing range −200 to 800°C
4G LTE / NB-IoT / LoRa
Interesting for very high probe temperatures, but I'd verify the electronics/ambient rating before foundry deployment
Emerson Rosemount 214C + wireless transmitter
Thermocouple sensing up to 1200°C
WirelessHART
Strong industrial/process-instrumentation architecture: keep transmitter away from the hottest point and use a suitable thermocouple/protection assembly
Monnit's current documentation specifically rates its ALTA high-temperature wireless sensors to 370°C and its wireless thermocouple products to 400°C.
I'd divide the application into three temperature zones:
1. <150°C ambient around equipment
Conventional industrial wireless sensors are usually practical. The important specifications become dust, vibration, IP/NEMA rating, RF range and battery life.
2. 150–400°C equipment/surface temperature
Look at Monnit ALTA High-Temp/Thermocouple or Phase IV Leap Sensors. Phase IV is particularly interesting because its high-temperature wireless node is specifically designed for industrial high-heat applications; its specialized enclosure can withstand up to 250°C, although its electronics/battery are separately rated lower and the manufacturer specifies exposure-time limitations.
3. >400°C, especially furnace/melt-zone temperatures
I would not put a normal battery-powered wireless transmitter directly at the hot point. Instead, use a mineral-insulated Type K/N/R/S thermocouple or high-temperature RTD/probe, thermowell or ceramic protection, and locate the wireless transmitter in a cooler zone.
A good example is the Emerson Rosemount 214C thermocouple, which is specified to 1200°C, paired with a WirelessHART transmitter. Emerson specifically offers the 214C/848T combination, with the 214C providing the high-temperature sensing element and the 848T providing wireless communications.
The distinction is important: Emerson's 214C can measure up to 1200°C, but that doesn't mean the wireless electronics can sit at 1200°C. The wireless transmitter needs to be thermally isolated/located away from the extreme heat.
One particularly promising architecture
For a steel foundry, I'd investigate:
High-temperature Type K/N/R/S thermocouple → mineral-insulated/ceramic probe → short high-temperature cable → wireless transmitter located in a cooled/shielded area → WirelessHART/LoRaWAN/900-MHz gateway.
That lets you put the sensing junction where the heat is while keeping the battery, radio and electronics somewhere they can survive.
If you tell me the approximate temperature (e.g. 200°C, 500°C, 800°C, 1,200°C) and what you're measuring (molten steel, furnace wall, ladle, bearing, refractory, flue gas, etc.), I can narrow this to 3–5 specific industrial sensors/transmitters, including their enclosure/ambient ratings, probe temperature ratings, wireless protocol, hazardous-area certifications, and approximate price.
Recommended Wireless Solutions for High-Heat Environments
Sensor Brand / Model
Core Technology & Range
Temperature Limit
Key Advantage / Application
NCD Industrial Wireless Thermocouple Sensor
Long-range 900MHz wireless mesh, up to 2-mile range.
Up to 980°C (1800°F) continuous via Inconel/ceramic probes.
Features C1D2 hazardous certification and heavy-duty probe insulations.
Linovision LoRaWAN Industrial Temperature Sensor
LoRaWAN wireless transmission, IP67 waterproof.
Probe measures -200°C to 800°C (-328°F to 1472°F).
Vibration-resistant construction suited for heavy machinery monitoring.
Monnit ALTA Industrial High Temperature Sensor
900MHz / Wi-Fi industrial-grade wireless radio.
Up to 370°C (700°F) with standard high-temp leads.
Enclosure isolates radio electronics from the direct measurement point.
Best Practices for Steel Foundry Deployments
Isolate the Transmitter: Never mount the wireless radio housing directly onto hot steel surfaces or furnace walls. Use remote-cable probes and mount the transmitter box on a structural pillar using a magnetic or bracket mount further down the thermal gradient.
Choose the Right Thermocouple Type: Use Type K (for general high heat up to 1100°C) or Type S/B (for extreme molten metal/furnace temperatures) with mineral insulation and protective Inconel 600 or ceramic sheathing.
Manage RF Interference: Heavy foundry equipment, large electric arc furnaces, and thick steel structures block or reflect radio signals. Opt for sub-GHz protocols (like LoRaWAN or proprietary 900MHz mesh) rather than standard 2.4GHz Wi-Fi for better penetration through industrial obstacles.[1][2]
If you can share the exact process you are monitoring (e.g., ladle preheater, furnace crown, exhaust duct, or bearing temperature) and the approximate peak temperature , I can help you select the exact thermocouple calibration and mounting hardware needed.
Wireless thermocouple sensors featuring remote transmitters connected via high-temperature ceramic-insulated or Inconel-armored probe leads are engineered to withstand extreme heat in steel foundries.
In a steel foundry, standard wireless electronics cannot be placed directly in radiant heat zones because internal lithium batteries and radio transmitters fail above 70°C to 85°C. Instead, the standard architecture uses a remote-mounted wireless transceiver housed in an IP65/IP67 enclosure placed away from intense radiant heat, wired to a heavy-duty probe (such as a Type K or Type S thermocouple with Inconel or ceramic overbraid) that withstands the extreme measurement point.
Recommended Wireless High-Temperature Systems
National Control Devices (NCD) Industrial Wireless Thermocouple Sensor : Uses a remote enclosure with DigiMesh wireless mesh networking paired with probes rated up to 980°C–1090°C continuous/short-term service using ceramic fiber insulation and Inconel fittings.
Monnit Industrial-Grade Wireless High Temperature Sensor : Supports high-temperature thermocouple leads capable of monitoring extreme environments up to 700°F (371°C) or higher depending on the specific probe configuration selected.
Remote Housing Placement: Mount the radio transmitter box behind structural shields or use extended probe cables (e.g., 6 to 10 feet) to keep the battery and RF module in ambient temperature zones below 60°C.
Sheath Material: Specify Inconel 600 or ceramic-beaded protection tubes for the measuring tip to resist oxidation and thermal shock from molten or semi-molten steel handling.
Transmission Frequency: Prefer robust industrial protocols like LoRaWAN or proprietary 900MHz mesh over standard Wi-Fi, as heavy machinery, thick steel structures, and electromagnetic interference in foundries severely disrupt standard 2.4GHz signals.[1][2]
If you can share the exact process or equipment you are monitoring (e.g., ladle preheaters, furnace crowns, exhaust ducts) and the approximate peak temperature , I can recommend a specific probe length and communication protocol.
