Product Overview
The TOSHIBA TBU31A is a precision industrial temperature sensor module engineered by Toshiba—a trusted leader in industrial automation components—designed to deliver accurate, real-time temperature monitoring for critical processes in sectors like food & beverage processing, pharmaceutical manufacturing, and industrial machinery. As a key component in temperature control loops, this module excels in converting thermal data into reliable electrical signals, enabling systems to maintain optimal temperatures and prevent costly process deviations. Core features of the TOSHIBA TBU31A include a wide measurement range of -50°C to +150°C, high accuracy of ±0.3°C (at 25°C), and a 4-20mA analog output for seamless integration with PLCs, DCS, and HMIs. With its rugged stainless steel probe (316L) and IP67 protection rating, the TOSHIBA TBU31A withstands harsh conditions such as washdowns (in food plants), chemical exposure (in pharmaceutical reactors), and vibration (in manufacturing machinery). Additionally, the TOSHIBA TBU31A features a compact design and flexible mounting options (threaded or flange), making it easy to install in space-constrained areas—ideal for both new automation setups and retrofits of legacy temperature monitoring systems.
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Technical Specifications
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Value
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Product Model
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TOSHIBA TBU31A
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Manufacturer
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Toshiba (industrial automation components leader)
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Product Type
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Industrial Temperature Sensor Module (analog output)
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Measurement Range
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-50°C to +150°C (-58°F to +302°F); optional extended range: -80°C to +200°C
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Accuracy
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±0.3°C (at 25°C); ±0.5°C (over -20°C to +100°C); ±1.0°C (full range)
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Output Signal
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4-20mA analog (2-wire); 4mA = -50°C, 20mA = +150°C (configurable via calibration)
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Sensor Element
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PT1000 RTD (Platinum Resistance Temperature Detector) – high stability, low drift
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Probe Material
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Stainless Steel 316L (wetted parts); PEEK insulation (internal)
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Probe Dimensions
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6mm diameter × 50mm length (standard); custom lengths (30mm-200mm) available
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Protection Rating
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IP67 (dust-tight, water-resistant to 1m depth for 30 minutes)
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Operating Voltage
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12-30V DC (2-wire loop power); power consumption: <10mA
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Response Time (T90)
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<5 seconds (in flowing water at 2m/s); <15 seconds (in still air)
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Noise Immunity
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EN 61000-6-2 (industrial environment); ±2kV ESD protection (contact)
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Mounting Type
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M12 threaded probe (standard); optional flange mount (for tank/vessel installation)
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Certifications
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CE, UL 508, RoHS compliant; FDA 21 CFR Part 177 (for food contact applications)
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Long-Term Stability
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±0.1°C/year (at 25°C, no thermal cycling)
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Cable Length
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2m PVC cable (standard); optional 5m/10m cables or armored cables (for harsh environments)
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Key Features and Benefits
Precision Measurement & High Stability
At the core of the
TOSHIBA TBU31A is a PT1000 RTD sensor element—renowned for its exceptional stability and low drift—ensuring consistent temperature readings over time. With an accuracy of ±0.3°C at 25°C, the module meets the strict requirements of industries like pharmaceuticals (where temperature variations of ±0.5°C can compromise drug efficacy) and semiconductor manufacturing (where precise thermal control of process chambers is critical). The wide measurement range (-50°C to +150°C) further expands its usability: it can monitor cold-storage warehouses (-20°C) and high-temperature industrial ovens (+120°C) with equal reliability. Unlike thermocouples that require cold-junction compensation, the PT1000 RTD in the
TOSHIBA TBU31A eliminates additional calibration steps, reducing setup complexity and minimizing potential errors.
Industrial-Grade Durability & Harsh-Environment Compatibility
The TOSHIBA TBU31A is built to withstand the toughest industrial conditions. Its stainless steel 316L probe resists corrosion from chemicals (e.g., cleaning agents in dairy plants, acidic solutions in chemical processing) and mechanical wear (e.g., vibration from mixing equipment), extending its lifespan to over 5 years in typical applications. The IP67 protection rating ensures the module remains functional even after repeated washdowns (common in food & beverage facilities) or temporary water immersion (e.g., accidental spills in manufacturing plants). For extreme environments, optional armored cables protect against rodent damage or mechanical impact, while an extended temperature range variant (-80°C to +200°C) suits applications like freeze-drying processes (-50°C) or plastic extrusion machines (+180°C). This durability reduces maintenance frequency and replacement costs, making the TOSHIBA TBU31A a cost-effective long-term solution.
Seamless Integration & Flexible Installation
The TOSHIBA TBU31A is designed for hassle-free integration into existing control systems. Its 4-20mA 2-wire loop output is compatible with nearly all PLCs (e.g., Siemens S7-1200, Mitsubishi FX5U), DCS (e.g., ABB 800xA), and HMIs—no custom adapters or software required. The 2-wire design also simplifies wiring: power and signal are transmitted over a single pair of cables, reducing installation time and material costs compared to 4-wire sensors. Flexible mounting options add to its versatility: the standard M12 threaded probe easily screws into pipe fittings or machine housings, while the optional flange mount secures the module to tanks or vessels (e.g., monitoring the temperature of liquid ingredients in a food mixer). The module’s fast response time (T90 <5 seconds in flowing water) ensures control systems receive real-time data, enabling quick adjustments to prevent process deviations—critical for high-speed production lines.
Related Models
- TOSHIBA TBU31B – Digital-output variant of the TOSHIBA TBU31A, featuring Modbus RTU (RS-485) communication for remote monitoring and configuration (ideal for large-scale systems like warehouse temperature networks).
- TOSHIBA TBU31C – High-temperature upgrade of the TOSHIBA TBU31A, with a measurement range of -50°C to +250°C and a K-type thermocouple element (suited for industrial furnaces or heat-treating processes).
- TOSHIBA TBU30A – Entry-level predecessor to the TOSHIBA TBU31A, with ±0.5°C accuracy (cost-effective for non-critical applications like HVAC duct temperature monitoring).
- TOSHIBA TBU31A-EX – Explosion-proof version of the TOSHIBA TBU31A, certified ATEX Zone 2/22 and IECEx Zone 2 (for hazardous areas like chemical storage tanks or oil refinery process units).
- TOSHIBA TBU31A-F – Food-grade specialized model of the TOSHIBA TBU31A, with a smooth, crevice-free probe design and EHEDG certification (compliant with strict food safety standards for dairy, beverage, or meat processing).
- TOSHIBA TBU31A-W – Submersible variant of the TOSHIBA TBU31A, with IP68 protection (for underwater temperature monitoring in tanks, boilers, or wastewater treatment basins).
- TOSHIBA TBU32A – Dual-sensor model of the TOSHIBA TBU31A, with two PT1000 elements and dual 4-20mA outputs (for redundant temperature monitoring in safety-critical applications like nuclear power plant cooling systems).
Company & Service Highlights
As a certified distributor of Toshiba industrial automation products, we provide the TOSHIBA TBU31A and other Toshiba temperature sensors with specialized technical support. Our pre-sales team can assist with sensor selection (e.g., choosing between standard, explosion-proof, or food-grade variants based on your application) and calibration verification (ensuring the module meets your accuracy requirements). Every TOSHIBA TBU31A comes with a one-year warranty covering manufacturing defects, and our after-sales team offers on-site installation guidance and remote troubleshooting (e.g., diagnosing signal noise or output drift issues) to minimize downtime for your temperature control system.
If you need other Toshiba products (e.g., logic modules, PLCs) or complementary components like temperature transmitters or calibration tools, contact us immediately for personalized solutions.
Contact Information
Typical Application Areas
- Food & Beverage Processing: Monitoring the temperature of liquid ingredients in mixing tanks (the TOSHIBA TBU31A’s FDA-compliant probe ensures food safety, while IP67 withstands daily washdowns).
- Pharmaceutical Manufacturing: Controlling the temperature of vaccine storage freezers (-20°C) and fermentation reactors (+37°C) (high accuracy prevents batch failures and ensures regulatory compliance).
- Industrial Machinery: Tracking the temperature of motor bearings in manufacturing equipment (early detection of overheating via the module’s fast response time prevents costly motor failures).
- Chemical Processing: Measuring the temperature of exothermic reactions in closed vessels (stainless steel 316L probe resists chemical corrosion, while the 4-20mA output feeds data to DCS for process control).
- Building Automation & HVAC: Monitoring air temperature in data centers (+20°C to +24°C) and cold-storage facilities (-18°C) (reliable readings ensure optimal equipment performance and energy efficiency).
