PT100 low cost probe, class A, 1 m

The Pico SE019 PT100 Low-Cost Probe, Class A, 1 m is designed for laboratories, engineers, educational institutions and general test applications that require reliable PT100 temperature measurement at an economical price.

Pico Technology describes the SE019 as a low-cost, Class A accuracy platinum resistance thermometer probe for general applications.

Its key manufacturer specifications include:

• Order Code: SE019
• Sensor Type: PT100 platinum resistance thermometer
• Accuracy: Class A
• Accuracy at 0 °C: ±0.15 °C
• Temperature Range: −75 °C to +260 °C
• Probe Length: 120 mm
• Probe Diameter: 3 mm
• Cable: 1 m coiled
• Probe Material: Stainless steel
• Cable Material: PVC
• Connector: 4-pin mini-DIN
• Number of Wires: 4
• Handle: Yes

Class A PT100 Temperature Measurement

The SE019 meets Class A accuracy, with Pico specifying:

• ±0.15 °C at 0 °C

This makes the probe suitable for general temperature-monitoring applications where better accuracy is required than a standard Class B PT100 sensor.

PT100 platinum resistance thermometers are widely used because their resistance changes predictably with temperature. When connected to a compatible precision temperature logger, this allows stable and repeatable temperature measurements across laboratory and engineering applications.

−75 °C to +260 °C Temperature Range

The Pico SE019 has an official operating measurement range of:

• Minimum: −75 °C
• Maximum: +260 °C

This provides useful coverage for both below-ambient and elevated-temperature measurements.

Typical measurement applications can include:

• Laboratory temperature monitoring
• Environmental testing
• Electronics thermal measurements
• Equipment temperature monitoring
• Research experiments
• Product testing
• Engineering development
• Educational laboratory work
• General industrial temperature measurement

The complete application should always remain within the probe's specified temperature range and physical construction limits.

120 mm Stainless-Steel Probe

The SE019 uses a stainless-steel probe with manufacturer-specified dimensions of:

• Length: 120 mm
• Diameter: 3 mm

The narrow 3 mm diameter provides a relatively compact sensing probe for general temperature-monitoring applications.

The stainless-steel construction forms the physical probe body, while the sensing element is connected through the four-wire cable to the measurement instrument.

1 m Coiled PVC Cable

Pico specifies the SE019 with a:

• 1 metre coiled cable
• PVC cable construction

The coiled cable provides useful reach between the sensing point and the connected temperature data logger while helping keep the cable compact when its full length is not required.

This can be useful on:

• Laboratory benches
• Educational test stations
• Product-development setups
• Equipment monitoring systems
• General temperature logging installations

Four-Wire PT100 Connection

The SE019 uses a 4-wire measurement configuration.

Four-wire PRT measurement is important because it allows a compatible measurement instrument to compensate for resistance introduced by the sensor leads.

Without lead-resistance compensation, cable resistance can become part of the measured resistance and introduce additional temperature error.

The four-wire configuration therefore makes the SE019 well suited to compatible precision PRT data loggers such as the Pico PT-104.

4-Pin Mini-DIN Connector

The SE019 is terminated with a:

• 4-pin mini-DIN connector

This allows straightforward connection to compatible Pico PRT data-logging equipment.

The connector should not be described as “Tenth DIN.” DIN accuracy classifications and the physical mini-DIN connector are different specifications.

For the SE019:

• Accuracy classification: Class A
• Physical connector: 4-pin mini-DIN

Integrated Probe Handle

Unlike some fixed-installation PT100 probes, the SE019 includes a:

• Handle: Yes

The handle provides a convenient physical form for positioning and handling the probe during general laboratory and engineering temperature measurements.

This distinguishes the SE019 from Pico models such as the high-accuracy SE012, which Pico specifies without a handle.

Recommended for Pico PT-104

Pico Technology currently lists the SE019 as a recommended PT100 accessory for the PT-104 High-Accuracy Temperature Data Logger.

The PT-104 supports standard PT100 and PT1000 PRT sensors and provides four temperature measurement channels.

Using the SE019 with the PT-104 provides a suitable system for:

• General-purpose PT100 temperature logging
• Multi-point temperature measurement
• Research and development
• Laboratory experiments
• Environmental monitoring
• Product thermal testing
• Engineering measurements

Multiple SE019 probes can be connected to available PT-104 channels when several temperature points need to be recorded.

Probe Accuracy vs Complete System Accuracy

The ±0.15 °C at 0 °C specification applies to the SE019 probe itself.

The overall temperature-measurement uncertainty of a complete system also depends on factors such as:

• Data logger accuracy
• Sensor tolerance away from 0 °C
• Installation conditions
• Thermal contact
• Environmental effects
• Calibration status

For applications requiring traceable measurement uncertainty, the complete probe-and-logger system should therefore be evaluated rather than relying only on the probe's Class A specification.

General-Purpose PT100 Probe

Pico specifically positions the SE019 as a low-cost PT100 probe for general applications.

It is therefore suited to applications where:

• Class A accuracy is sufficient
• A high-precision 1/10 DIN probe is not required
• A 1 m cable is suitable
• A handled probe is preferred
• Temperatures remain within −75 °C to +260 °C

For measurements requiring substantially tighter accuracy, Pico's SE012 1/10 DIN probe is a higher-accuracy alternative.

Typical Applications

The Pico SE019 is suitable for:

• General temperature data logging
• PT100 temperature measurement
• Laboratory testing
• Engineering experiments
• Electronics thermal monitoring
• Product development
• Equipment temperature checks
• Environmental testing
• Educational laboratories
• Research and development
• Industrial test setups
• Multi-channel PT-104 temperature logging
• Quality-control measurements
• General-purpose temperature monitoring