The Ultimate Guide to E+H PT100 Platinum Resistance Thermometer Transmitters: Selection & Specs

Executive Summary: Looking for reliable temperature measurement in harsh or hazardous industrial environments? This comprehensive technical guide covers E+H PT100 platinum resistance thermometer transmitters, detailing their working principles, operating conditions, thermowell specifications, and key selection criteria for industrial automation.

Table of Contents

1. What is an E+H PT100 Transmitter?

2. How Does a PT100 RTD Work?

3. Why Engineers Choose PT100 for Industrial Applications

4. Key Technical Specifications & Operating Conditions

5. Thermowell & Process Connection Options

6. Certifications & Compliance

7. Need Assistance? Request a Quick Quote

1. What is an E+H PT100 Transmitter?

The E+H PT100 Platinum Resistance Thermometer Transmitter (also referred to as EH PT100 or PT-E100) is a high-precision industrial device designed to measure temperature by monitoring changes in the electrical resistance of platinum. The “100” designates a standard resistance of 100 ohms at 0°C.

Known for exceptional accuracy, long-term stability, and repeatability, the PT100 sensor is widely trusted in process control and laboratory applications. Available in single or dual Pt100 configurations with accuracy classes A, B, or AA, it fully complies with international RTD standards such as IEC 60751.

2. How Does a PT100 RTD Work?

A PT100 detects temperature shifts through the predictable change in electrical resistance of a platinum wire or thin-film element. As the temperature increases, the resistance rises linearly, allowing for precise and repeatable temperature calculation.

This measurement principle ensures:

• Fast response times ($t_{50} = 1\text{s}$, $t_{90} = 2\text{s}$)

• High linearity across a broad operational temperature range

• Stable, continuous signal transmission via a 4–20 mA output or 4-wire configuration

3. Why Engineers Choose PT100 for Industrial Applications

Engineers and system integrators specify the PT100 in demanding industrial environments due to platinum's superior chemical resistance, stability, and linearity. Key deployment advantages include:

• Harsh & Hazardous Environments: Built to withstand extreme conditions, including certified safety-relevant and explosive areas.

• Compact & Vibration-Resistant: Series like the TMR31 feature vibration-resistant membrane sensors, ensuring maximum safety in dynamic process flows.

• Smart Configuration: Configurable and visualizable via ReadWin® 2000 PC software with NAMUR NE43 fault diagnostics.

4. Key Technical Specifications & Operating Conditions

5. Thermowell & Process Connection Options

Thermowell Specifications

To protect against aggressive process conditions, RTD assemblies can be integrated into thermowells:

• Material: 1.4404 (316L stainless steel)

• Outer Diameter: 4.00 mm or 6.00 mm

• Max Insertion Depth: Up to 600 mm (23.62")

• Design: Straight tube end with a fine surface finish (Ra 0.8 μm / 32 μin.)

Process Connection Options

Flexible threading options to fit diverse piping and vessel setups:

• Thread Types: G1/4", G1/2", NPT1/4", NPT1/2", M14x1.5, M18x1.5, BSPT R1/2"

6. Certifications & Compliance

To meet stringent international maritime and industrial standards, E+H PT100 transmitters carry major global certifications:

• German Lloyd (GL)

• UL 3111-1

• EAC Certified

• Marine Application Approvals

7. Need Assistance? Request a Quick Quote

Sourcing reliable, factory-sealed industrial automation and instrumentation is critical to avoiding costly plant downtime. At Xiamen ZYM Automation & Control Co., Ltd. (A Division of Xiamen Zhenyoumei Display Products Co., Ltd.), we supply 100% authentic E+H measurement instrumentation, level transmitters (such as FMR52 and FMP53 series), and temperature components backed by expert technical support.

  Ready to source your E+H parts?

• Email us directly: [email protected]

• Need specific model verification or datasheets? Visit our Contact Us Page to speak with our engineering sales team.

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