PT100 probe, high-temperature stainless steel braided cable, 2 m

The Pico SE041 PT100 High-Temperature Probe with 2 m stainless-steel braided cable is designed for engineers, laboratories and industrial test environments that require reliable temperature measurement in high-temperature applications.

Pico Technology describes the SE041 as a general-purpose platinum resistance thermometer probe for high-temperature applications, including ovens and furnaces fitted with suitable entry-hole mounts.

Its key specifications include:

• Order Code: SE041
• Sensor Type: PT100 platinum resistance thermometer
• Probe Type: High-temperature
• Temperature Range: −60 °C to +500 °C
• Accuracy Class: Class B
• Accuracy at 0 °C: ±0.3 °C
• Accuracy at 500 °C: ±2.8 °C
• Probe Length: 150 mm
• Probe Diameter: 6 mm
• Cable Length: 2 m
• Sensor Construction: Wire-wound
• Conductors: Four-core nickel
• Cable Insulation: High-temperature fiberglass
• Cable Protection: Stainless-steel overbraid
• Number of Wires: 4
• Connector: 4-pin mini-DIN
• Handle: No

High-Temperature Measurement up to +500 °C

The SE041 provides a manufacturer-specified temperature range of:

• Minimum: −60 °C
• Maximum: +500 °C

This makes it suitable for temperature measurements beyond the range of many standard PT100 probes.

Typical applications include:

• Industrial ovens
• Furnaces
• High-temperature laboratory testing
• Thermal chambers
• Heated equipment
• Materials testing
• Product thermal validation
• Engineering research
• Process-development experiments
• Long-duration temperature logging

Designed for Ovens and Furnaces

Pico specifically identifies the SE041 for high-temperature applications such as ovens and furnaces with entry-hole mounts.

The 150 mm sensing shaft can be positioned through a suitable opening so that the sensing section reaches the required measurement area while the cable connection remains outside the extreme-temperature zone.

This makes it suitable for applications where a temperature probe needs to pass through:

• Furnace walls
• Oven access ports
• Thermal chamber entry points
• Test fixture openings
• Heated process equipment

Important Mounting Requirement

Pico specifies an important installation limitation for the SE041.

The 150 mm probe shaft is crimped where it joins the cable, and Pico states that:

• The crimp should not be mounted inside an oven
• The cable should not be mounted inside an oven

Only the sensing section should be positioned according to the intended high-temperature measurement arrangement.

This is important because the +500 °C temperature specification should not be interpreted as meaning that every part of the probe assembly can be exposed continuously to +500 °C.

Wire-Wound PT100 Sensor

The SE041 uses a wire-wound PT100 sensing element.

PT100 sensors measure temperature through the predictable change in electrical resistance of platinum.

Wire-wound PRT sensors are widely used for precision and industrial temperature measurement where good stability and repeatability are required.

Class B Accuracy

Pico specifies the SE041 as a Class B PT100 probe.

Published accuracy includes:

• ±0.3 °C at 0 °C
• ±2.8 °C at 500 °C

This gives engineers a more useful indication of sensor performance than quoting only the tolerance at 0 °C.

The probe is therefore suited to general high-temperature measurements where Class B accuracy meets the application requirements.

150 mm × 6 mm Sensing Shaft

The SE041 has a manufacturer-specified sensing shaft measuring:

• Length: 150 mm
• Diameter: 6 mm

The 150 mm shaft provides useful reach through oven, furnace or chamber entry holes.

The 6 mm diameter should be considered when designing:

• Mounting holes
• Compression fittings
• Test fixtures
• Furnace access points
• Thermal chamber feedthroughs

2 m High-Temperature Cable

The SE041 includes a:

• 2 metre cable

The longer cable provides useful separation between the high-temperature sensing area and the connected temperature data logger.

This is particularly valuable where the PT-104 or other measurement equipment must remain outside a hot chamber or furnace area.

High-Temperature Fiberglass Insulation

Pico specifies the cable conductors as being insulated with:

• High-temperature fiberglass

This construction is more appropriate for elevated-temperature measurement environments than conventional PVC-insulated probe cables.

Stainless-Steel Cable Overbraid

The cable includes a:

• Stainless-steel overbraid

Pico states that the braided construction is used to:

• Increase overall ruggedness
• Reduce heat transmission down the cable

This provides a manufacturer-supported reason for using the braided construction rather than relying on generic durability claims.

Four-Core Nickel Conductors

The SE041 uses:

• Four-core nickel conductors

These conductors form part of the probe's high-temperature cable assembly and support the four-wire PT100 measurement configuration.

Four-Wire PT100 Measurement

The SE041 uses a:

• 4-wire connection

Four-wire resistance measurement allows a compatible instrument to compensate for resistance in the sensor leads.

This is particularly useful for PT100 measurements because the logger can separate the resistance of the sensing element from resistance introduced by the cable.

Four-wire construction therefore supports more accurate temperature acquisition when used with a suitable PRT measurement instrument.

4-Pin Mini-DIN Connector

The SE041 is fitted with a:

• 4-pin mini-DIN connector

This enables direct connection to compatible Pico PRT temperature data loggers such as the PT-104.

The connector and logger should remain outside inappropriate high-temperature areas.

Recommended for Pico PT-104

Pico Technology lists the SE041 as a recommended accessory for the PT-104 High-Accuracy Temperature Data Logger.

The PT-104 provides four PRT input channels and supports PT100 temperature measurements.

Using the SE041 with the PT-104 is suitable for:

• High-temperature data logging
• Oven temperature monitoring
• Furnace experiments
• Multi-point thermal measurements
• Laboratory R&D
• Long-duration temperature recording
• Industrial thermal testing

Multiple SE041 probes can be used across available PT-104 channels where several high-temperature measurement points are required.

Temperature Logging in Furnaces and Ovens

When properly installed, the SE041 can support applications such as:

• Monitoring heating profiles
• Comparing temperatures at different locations
• Recording warm-up and cool-down cycles
• Validating process-temperature conditions
• Product heat testing
• Materials research
• Equipment qualification

The probe mounting arrangement should keep the crimp, cable and connector away from locations where their temperature limits could be exceeded.

Probe Accuracy and Complete Measurement Accuracy

The specified sensor accuracy is:

• ±0.3 °C at 0 °C
• ±2.8 °C at 500 °C

The accuracy of the complete measurement system can also depend on:

• PT-104 accuracy
• Probe position
• Temperature gradients
• Thermal radiation
• Sensor immersion or insertion depth
• Calibration status
• Installation geometry
• Heat conduction along the probe

For demanding applications, the total measurement uncertainty should therefore be evaluated for the full probe-and-logger system.

Typical Applications

The Pico SE041 is suitable for:

• High-temperature PT100 measurements
• Industrial oven testing
• Furnace temperature monitoring
• Thermal chamber testing
• Materials research
• High-temperature laboratory experiments
• Industrial process development
• Product thermal validation
• Equipment qualification
• R&D temperature measurement
• Engineering laboratories
• Multi-point temperature logging
• PT-104 measurement systems