Trafag Industrial Pressure Transmitter

 

Manufacturer: Trafag Sensors & Controls (Switzerland)

Pressure Range: 0 … 1 bar (Gauge)

Serial No: 521465

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1. General Description

 

This is a robust industrial pressure transmitter from Trafag, designed for the precise measurement of fluids and gases. Based on the visual design and the 2009 manufacturing date, this likely belongs to the ECT or NAT series.

It features a compact stainless steel housing and a ceramic or thin-film-on-steel sensor cell, offering excellent long-term stability. The “bar g” marking indicates it measures relative (gauge) pressure, meaning it measures pressure relative to the atmospheric pressure.

Key Features 🎯

 

• Low Pressure Range: Specifically calibrated for 0 … 1 bar.

• Robust Construction: Full stainless steel housing for high durability.

• Temperature Compensated: Electronics are compensated for accuracy between 0…70°C.

• Standard Connection: Equipped with a widely used DIN 43650-A (GDM) connector for easy installation and maintenance.

• Swiss Quality: Manufactured by Trafag, known for high-precision hydraulics and engine monitoring sensors.

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2. Technical Specifications

 

Performance Data (from label)

 

Parameter	Value
Pressure Range (p)	0 … 1 bar g (Gauge / Relative)
Compensated Temp. (Tcomp)	0 … +70 °C
Max. Overpressure	Typically 2 bar or higher (for 1 bar range)
Date of Manufacture	05 / 2009

Electrical Data (Typical for this housing)

 

Note: The output signal code is usually on the top or side label, not visible here. Standard variations include:

Parameter	Specification
Output Signal	4 … 20 mA (2-wire) – Most Common
	Or 0 … 10 V DC (3-wire)
Supply Voltage	Typically 9 … 30 V DC
Electrical Connection	DIN 43650-A (Large cubic connector)
Protection Class	IP65 (when connector is secured)

Mechanical Data

 

Parameter	Value
Housing Material	Stainless Steel (1.4301 / 304 or 1.4435 / 316L)
Process Connection	Threaded Male, likely G 1/4″ (Standard European)
Seal	FKM / Viton (Standard)

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3. Wiring (Standard DIN 43650-A)

 

For the most common 2-wire 4-20mA configuration:

• Pin 1: Supply Voltage (+ VDC)

• Pin 2: Output Signal (4-20 mA)

• Pin 3: Not Used (or 0V for 3-wire voltage versions)

• Ground Symbol: Earth / Shield