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PT100 with junction box，PT100 RTD suitable for harsh environments

RTD with connection box and process fittings

The PT100-3 is a widely used probe-type Platinum Resistance Thermometer (PT100 RTD) engineered for reliable and accurate temperature measurement in harsh industrial environments. The sensor integrates a rugged Form B connection box that protects internal wiring from dust, moisture, and mechanical damage, making it especially well suited for outdoor installations, chemical plants, and other demanding process environments.

Compliant with EN 60751, the PT100-3 delivers a broad measurement range of −70 °C to +300 °C with high stability and repeatability. The sensor is compatible with a variety of standard process fittings — including 1/2 NPT, 1/2 BSP, 3/4 NPT, and M16 — enabling straightforward integration into existing pipelines and equipment. Probe diameter and length are fully customisable, allowing the PT100-3 to be tailored to virtually any installation requirement.

Brand:
PIDMaxWell
Item no.:
PT100-3
Payment:
T.T, Credit Card, Paypal etc, to be negotiate
Market price:
$10
Price:
$5
Product origin:
Made in China
Color:
Orange, silver, white
Min order:
10 PCS
Product weight:
0.35kg
Lead Time:
14 days after payment confirmed

Inquiry now

Technical Specifications

Parameter	Specification
Sensor Type	PT100 RTD (Platinum Resistance Thermometer)
Compliance Standard	EN 60751
Temperature Range	−70 °C to +300 °C
Probe Diameter	4 mm / 5 mm / 6 mm (customisable)
Probe Length	50 mm / 100 mm / 150 mm (customisable)
Process Fittings	1/2 NPT, 1/2 BSP, 3/4 NPT, M16 (customisable)
Connection Box	Form B (aluminium alloy housing)
Lead Wire	No lead wire (terminal block inside connection box) / optional
Probe Material	Stainless steel

The PT100-3 ordering code is structured as follows:

PT100-3 — [Probe Diameter] — [Probe Length] — [Process Fitting] — [Lead Wire] — [Connection Box] — [Temperature Range]

Field Definitions

Field	Code	Description
Series	PT100-3	Probe-type RTD with connection box
Probe Diameter	4 5 6	4mm 5mm 6mm
Probe Length	50 100 150	50mm 100mm 150mm
Process Fitting	1/2NPT 1/2BSP 3/4NPT M16	1/2 NPT thread 1/2 BSP thread 3/4 NPT thread M16 metric thread
Lead Wire	N	No lead wire
Connection Box	CB	Form B connection box
Temperature Range	100 200 300	Up to 100 °C Up to 200 °C Up to 300 °C

Ordering Example

PT100-3-5-100-1/2NPT-N-CB-300

Probe-type PT100 RTD, 5 mm probe diameter × 100 mm probe length, 1/2 NPT process fitting, no lead wire, Form B connection box, temperature range up to 300 °C.

Click on below link to download catalog, user manual for PT100-3

PT100-3 Catalog

The PT100-3 is a versatile temperature sensing solution suited to a broad range of industries and processes where robust construction and accurate measurement are essential.

Industrial Process Control. The sensor’s stainless steel probe and sealed connection box make it ideal for monitoring temperatures in pipelines, pressure vessels, and manufacturing machinery, where vibration and exposure to process media are common.
Chemical and Petrochemical Processing. The PT100-3 withstands the corrosive atmospheres and elevated temperatures found in reactors, distillation columns, heat exchangers, and storage tanks, providing stable readings critical to process safety and product quality.
Oil and Gas. With NPT-compatible fittings and a wide operating range, the sensor integrates seamlessly into upstream, midstream, and downstream equipment, including wellheads, separators, and transmission pipelines.
Power Generation. The sensor is well suited for temperature monitoring in boilers, steam turbines, cooling systems, and transformer oil, where continuous and reliable measurement is essential for plant efficiency and safety.
HVAC and Building Automation. The PT100-3 can be installed in large commercial and industrial HVAC systems, chilled-water loops, and district heating networks to provide accurate temperature feedback for energy management.
Food and Beverage Processing. The hygienic stainless steel probe and sealed head allow the sensor to be used in pasteurisation, sterilisation, and storage applications, where cleanliness and measurement accuracy are equally important.
Pharmaceutical Manufacturing. Precise temperature control during synthesis, fermentation, and lyophilisation processes is supported by the sensor’s high accuracy and EN 60751 compliance.

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