Technical Document
Specifications
Brand
RS ProSensor Type
PT100
Probe Length
35mm
Probe Diameter
6mm
Minimum Temperature Sensed
-50°C
Maximum Temperature Sensed
+250°C
Termination Type
Cable
Cable Length
2m
Probe Material
Stainless Steel
Process Connection
Probe
Number Of Wires
3
Accuracy
Class A
Country of Origin
France
Product details
RS Pro General Purpose 3 Wire Pt100 Bayonet Style PRT Probe
From RS Pro a high-quality and reliable Pt100 PRT (Platinum Resistance Thermometer) or RTD (Resistance Temperature Detector) sensing probe. This RTD probe has a robust construction with the sensing element encased in a rigid 316 stainless steel sheath and a bayonet fitting feature. The leads have a durable fibreglass insulation and are covered with a rugged stainless steel overbraid. This platinum resistance thermometer provides accurate and reliable temperature measurement for a wide range of applications.
What is an RTD?
An RTD is a type of temperature sensor based on the correlation between metals and temperature. As the temperature of a metal increases so does its resistance to the flow of electricity. This resistance can be measured and converted to a temperature reading. In a Pt100 RTD, the Pt stands for platinum (platinum wire or film) and 100 means that the temperature sensor has a resistance of 100 Ohms at 0°C. Platinum is the most reliable metal due to its linear resistance to temperature relationship over a large temperature range.
What is a Bayonet Style Platinum Resistance Thermometer?
The probes of these Pt100 sensors have an adjustable screw threaded stainless steel spring 250 mm long with a slotted bayonet fixing cap. The bayonet cap screws along this spring and allows the immersion length of the sensor probe to be adjusted. Once in place, the bayonet cap is secured to a bayonet adapter (which must be purchased separately allowing the temperature sensor to be firmly held in place within the recess. The other end of the probe is terminated by 3 insulated wire tails which are connected to the temperature measuring equipment.
Features and Benefits
High stability sensing element with a precision output
IEC 60751 Class B accuracy/tolerance
Adjustable bayonet fitting
Rigid 316 corrosion resistant stainless 6mm diameter steel sheath for protection of sensing element
Leads with durable fibreglass insulation and a rugged stainless steel overbraid
3 lead wires for an accurate reading
Applications
These bayonet style PRT sensors are designed for direct installation into the process. The bayonet fitting makes them suited for applications where the probe tip is fitted directly into a drilled hole or recess in machinery.
Air conditioning and refrigeration
Chemical industry
Plastics processing
Stoves and grills
Air, gas and liquid temperature measurement
Exhaust gas temperature measurement
Food processing
Laboratories
Frequently Asked Questions
How Does a PRT Temperature Sensor Work?
The PRT temperature sensor works by placing the sensor element (or process end) into the equipment or process that requires temperature measurement. As the temperature of the platinum resistance thermometer increases its resistance to the flow of electricity increases. For every increase per degree of temperature the electrical resistance also changes by a set ratio, this is called the temperature coefficient. For platinum, this ratio is .00385 ohm/ohm/°C which means for a Pt100 with a 100 ohm resistance the increase in resistance per degree of temperature would be 0.385 ohms. The total resistance reading can, therefore, be measured and converted into temperature.
How is the Resistance Measured?
The resistance generated by the temperature sensor is measured by passing current through one of the wires to produce a voltage. This voltage is then measured using a suitable bridge or voltmeter and the resistance calculated in ohms using Ohms Law (R=V/I). Once the resistance is known you can convert it to a temperature reading using a calibration equation or a Pt100 table. A temperature measurement device or calibrator can also be connected to the leads of the probe that will automatically convert the measured resistance into a temperature reading.
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BD 46.550
Each (Exc. Vat)
BD 51.205
Each (inc. VAT)
1
BD 46.550
Each (Exc. Vat)
BD 51.205
Each (inc. VAT)
1
Buy in bulk
quantity | Unit price |
---|---|
1 - 4 | BD 46.550 |
5 - 9 | BD 44.225 |
10+ | BD 42.185 |
Technical Document
Specifications
Brand
RS ProSensor Type
PT100
Probe Length
35mm
Probe Diameter
6mm
Minimum Temperature Sensed
-50°C
Maximum Temperature Sensed
+250°C
Termination Type
Cable
Cable Length
2m
Probe Material
Stainless Steel
Process Connection
Probe
Number Of Wires
3
Accuracy
Class A
Country of Origin
France
Product details
RS Pro General Purpose 3 Wire Pt100 Bayonet Style PRT Probe
From RS Pro a high-quality and reliable Pt100 PRT (Platinum Resistance Thermometer) or RTD (Resistance Temperature Detector) sensing probe. This RTD probe has a robust construction with the sensing element encased in a rigid 316 stainless steel sheath and a bayonet fitting feature. The leads have a durable fibreglass insulation and are covered with a rugged stainless steel overbraid. This platinum resistance thermometer provides accurate and reliable temperature measurement for a wide range of applications.
What is an RTD?
An RTD is a type of temperature sensor based on the correlation between metals and temperature. As the temperature of a metal increases so does its resistance to the flow of electricity. This resistance can be measured and converted to a temperature reading. In a Pt100 RTD, the Pt stands for platinum (platinum wire or film) and 100 means that the temperature sensor has a resistance of 100 Ohms at 0°C. Platinum is the most reliable metal due to its linear resistance to temperature relationship over a large temperature range.
What is a Bayonet Style Platinum Resistance Thermometer?
The probes of these Pt100 sensors have an adjustable screw threaded stainless steel spring 250 mm long with a slotted bayonet fixing cap. The bayonet cap screws along this spring and allows the immersion length of the sensor probe to be adjusted. Once in place, the bayonet cap is secured to a bayonet adapter (which must be purchased separately allowing the temperature sensor to be firmly held in place within the recess. The other end of the probe is terminated by 3 insulated wire tails which are connected to the temperature measuring equipment.
Features and Benefits
High stability sensing element with a precision output
IEC 60751 Class B accuracy/tolerance
Adjustable bayonet fitting
Rigid 316 corrosion resistant stainless 6mm diameter steel sheath for protection of sensing element
Leads with durable fibreglass insulation and a rugged stainless steel overbraid
3 lead wires for an accurate reading
Applications
These bayonet style PRT sensors are designed for direct installation into the process. The bayonet fitting makes them suited for applications where the probe tip is fitted directly into a drilled hole or recess in machinery.
Air conditioning and refrigeration
Chemical industry
Plastics processing
Stoves and grills
Air, gas and liquid temperature measurement
Exhaust gas temperature measurement
Food processing
Laboratories
Frequently Asked Questions
How Does a PRT Temperature Sensor Work?
The PRT temperature sensor works by placing the sensor element (or process end) into the equipment or process that requires temperature measurement. As the temperature of the platinum resistance thermometer increases its resistance to the flow of electricity increases. For every increase per degree of temperature the electrical resistance also changes by a set ratio, this is called the temperature coefficient. For platinum, this ratio is .00385 ohm/ohm/°C which means for a Pt100 with a 100 ohm resistance the increase in resistance per degree of temperature would be 0.385 ohms. The total resistance reading can, therefore, be measured and converted into temperature.
How is the Resistance Measured?
The resistance generated by the temperature sensor is measured by passing current through one of the wires to produce a voltage. This voltage is then measured using a suitable bridge or voltmeter and the resistance calculated in ohms using Ohms Law (R=V/I). Once the resistance is known you can convert it to a temperature reading using a calibration equation or a Pt100 table. A temperature measurement device or calibrator can also be connected to the leads of the probe that will automatically convert the measured resistance into a temperature reading.