Temperature Sensors & Transmitters

Four industrial temperature sensing assemblies including a coiled thermocouple probe with junction box, duct-mounted temperature sensor with insertion probe, explosion-proof RTD temperature sensor with cast aluminum connection head, and wall-mounted room temperature sensor with remote probe for HVAC and process control applications.

Temperature sensors and transmitters are essential for accurate temperature monitoring, measurement, and control in industrial environments. These devices work together to detect temperature changes and convert them into electrical signals that can be displayed, recorded, or used for automated control. They are widely used in applications where temperature directly affects system performance, safety, and product quality.

A temperature sensor serves as the sensing element, detecting temperature through physical changes such as resistance or voltage. Temperature transmitters process the sensor signal and convert it into standardized outputs such as 4–20 mA, 0–10 V, or digital communication formats. This allows temperature data to be reliably transmitted over long distances and integrated into PLCs, SCADA systems, and industrial control platforms.

RSP Supply offers temperature sensors and transmitters in a variety of technologies and configurations to match different operating conditions. Options range from highly accurate RTDs to rugged thermocouples designed for extreme temperatures, as well as non-contact and digital sensing solutions. These devices provide dependable performance across a wide range of industries and environmental conditions.

Found 156 items
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Dwyer TS-8T NTC Sensor
Free U.S Ground shipping
$28.90
$24.08
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Dwyer TS-2 PTC Sensor
Free U.S Ground shipping
$28.90
$24.08
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Dwyer O-45 Outside Air Temperature Sensor
Free U.S Ground shipping
$18.85
$15.71
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Dwyer O-4A Outside Air Temperature Sensor
Free U.S Ground shipping
$18.85
$15.71
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Dwyer O-4B Outside Air Temperature Sensor
Free U.S Ground shipping
$18.85
$15.71
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Dwyer TS-21 PTC Sensor
Free U.S Ground shipping
$37.72
$31.43
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Dwyer TS-81T NTC Sensor
Free U.S Ground shipping
$37.26
$31.05
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Dwyer S2-10B Surface Mount Temperature Sensor
Free U.S Ground shipping
$112.84
$94.03
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Dwyer S2-1A Surface Mount Temperature Sensor
Free U.S Ground shipping
$81.08
$67.57
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Dwyer S2-1B Surface Mount Temperature Sensor
Free U.S Ground shipping
$81.08
$67.57
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Dwyer S2-1C Surface Mount Temperature Sensor
Free U.S Ground shipping
$69.29
$57.74
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Dwyer I2-21062 General Purpose Immersion Temperature Sensor
Free U.S Ground shipping
$131.74
$109.78
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Dwyer I2-22062 General Purpose Immersion Temperature Sensor
Free U.S Ground shipping
$131.74
$109.78
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Dwyer I2-23042 General Purpose Immersion Temperature Sensor
Free U.S Ground shipping
$131.74
$109.78
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Dwyer I2-23062 General Purpose Immersion Temperature Sensor
Free U.S Ground shipping
$131.74
$109.78
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Dwyer I2-25062 General Purpose Immersion Temperature Sensor
Free U.S Ground shipping
$91.56
$76.30
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Dwyer I2-26062 General Purpose Immersion Temperature Sensor
Free U.S Ground shipping
$91.56
$76.30
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Dwyer I2-2A062 General Purpose Immersion Temperature Sensor
Free U.S Ground shipping
$91.56
$76.30
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Dwyer TS-7 NTC Sensor
Free U.S Ground shipping
$12.90
$10.75
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Dwyer TS-71 NTC Sensor
Free U.S Ground shipping
$18.28
$15.23
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Dwyer S2-1D Surface Mount Temperature Sensor
Free U.S Ground shipping
$98.93
$82.44
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Dwyer S2-1E Surface Mount Temperature Sensor
Free U.S Ground shipping
$98.93
$82.44
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Dwyer S2-1F Surface Mount Temperature Sensor
Free U.S Ground shipping
$81.08
$67.57
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Dwyer S2-21 Surface Mount Temperature Sensor
Free U.S Ground shipping
$124.09
$103.41
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Dwyer S2-22 Surface Mount Temperature Sensor
Free U.S Ground shipping
$126.20
$105.17
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Dwyer S2-23 Surface Mount Temperature Sensor
Free U.S Ground shipping
$122.52
$102.10
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Dwyer AVG-26241 Averaging temperature sensor
Free U.S Ground shipping
$266.62
$222.18
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Dwyer S2-6A Surface Mount Temperature Sensor
Free U.S Ground shipping
$97.14
$80.95
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ABB TSP341-N-021 - Temperature Sensor, TSP341-N Temperature Sensor NI
Free U.S Ground shipping
$2163.67
$1803.06
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Dwyer S2-24 Surface Mount Temperature Sensor
Free U.S Ground shipping
$125.63
$104.69
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Dwyer S2-43 Surface Mount Temperature Sensor
Free U.S Ground shipping
$159.47
$132.89
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Dwyer S2-44 Surface Mount Temperature Sensor
Free U.S Ground shipping
$159.47
$132.89
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Dwyer S2-45 Surface Mount Temperature Sensor
Free U.S Ground shipping
$141.22
$117.68
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Dwyer S2-46 Surface Mount Temperature Sensor
Free U.S Ground shipping
$139.79
$116.49
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Dwyer S2-47 Surface Mount Temperature Sensor
Free U.S Ground shipping
$139.79
$116.49
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Dwyer S2-48 Surface Mount Temperature Sensor
Free U.S Ground shipping
$139.79
$116.49
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Dwyer S2-49 Surface Mount Temperature Sensor
Free U.S Ground shipping
$139.79
$116.49
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Dwyer S2-4B Surface Mount Temperature Sensor
Free U.S Ground shipping
$141.53
$117.94
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Dwyer I2-43042 Weatherproof Immersion Temperature Sensor
Free U.S Ground shipping
$88.67
$73.89
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Dwyer I2-43062 Weatherproof Immersion Temperature Sensor
Free U.S Ground shipping
$88.67
$73.89
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Dwyer I2-44042 Weatherproof Immersion Temperature Sensor
Free U.S Ground shipping
$88.67
$73.89
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Dwyer I2-44062 Weatherproof Immersion Temperature Sensor
Free U.S Ground shipping
$100.57
$83.81
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Dwyer I2-45062 Weatherproof Immersion Temperature Sensor
Free U.S Ground shipping
$63.65
$53.04
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Dwyer I2-46042 Weatherproof Immersion Temperature Sensor
Free U.S Ground shipping
$103.99
$86.66
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Dwyer I2-48062 Weatherproof Immersion Temperature Sensor
Free U.S Ground shipping
$63.65
$53.04
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Dwyer I2-49042 Weatherproof Immersion Temperature Sensor
Free U.S Ground shipping
$63.65
$53.04
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Dwyer I2-49062 Weatherproof Immersion Temperature Sensor
Free U.S Ground shipping
$63.65
$53.04
Normally In Stock
Dwyer I2-4A042 Weatherproof Immersion Temperature Sensor
Free U.S Ground shipping
$63.65
$53.04

FAQs

Q: What is the difference between a temperature sensor and a temperature transmitter?
A temperature sensor detects temperature and converts it into a raw electrical signal, such as resistance or voltage. A temperature transmitter conditions the signal and converts it into a standardized output, enabling reliable communication with control systems over long distances.

Q: What applications commonly use temperature sensors and transmitters?
They are commonly used in industrial manufacturing, HVAC systems, water and wastewater treatment, food and beverage processing, pharmaceuticals, chemical processing, oil and gas, and power generation. These devices support process control, safety, energy efficiency, and regulatory compliance.

Q: What types of temperature sensors are available?
Common temperature sensor types include resistance temperature detectors (RTDs), thermocouples, thermistors, infrared temperature sensors, and digital temperature sensors. Each type is selected based on temperature range, accuracy requirements, response time, and environmental conditions.

Q: How accurate are temperature sensors and transmitters?
Accuracy varies by technology and model, with many industrial devices offering accuracy from ±0.1°C to ±1°C or better. Installation practices, wiring quality, ambient conditions, and calibration frequency can influence long-term accuracy.

Q: Do temperature sensors and transmitters require calibration and maintenance?
Yes, periodic calibration and inspection are recommended to maintain accuracy and reliable performance. Calibration intervals depend on application criticality and operating conditions, and routine maintenance helps identify sensor drift or installation issues early.

Why Buy Temperature Sensors and Transmitters from RSP Supply

RSP Supply provides a wide selection of temperature sensors and transmitters designed for reliable performance in industrial applications. Our products support accurate measurement, consistent signal output, and seamless integration with automation and control systems. Customers rely on RSP Supply for technical expertise, dependable components, and solutions that support safe, efficient, and well-controlled temperature monitoring.