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H70650a

Product catalog summary

Overview
The SF6 Gas Density Monitor by Trafag AG is a mechanical, self-acting device designed for precise monitoring of SF6 gas density using a reference gas comparison principle. This device is maintenance-free and does not require temperature compensation, making it suitable for a wide range of applications, including extreme temperatures and altitudes.

Key Features

High accuracy over a wide temperature range without false alarms at low temperatures.
Resistant to vibration and shock, ensuring reliability over decades.
Equipped with up to four galvanically isolated micro switches for different alarm signals.
Maintenance-free with no need for recalibration of switchpoints.
Capable of monitoring other gases such as CF4.

Operating Principle
The monitor uses a bellows system to compare the SF6 gas density with a reference gas chamber. Changes in gas density actuate micro switches, while temperature-induced pressure changes do not trigger false alarms. An optional SF6 indicator provides visual inspection of gas density.

Technical Specifications

Measurement Principle: Reference gas measurement.
Material: Sensor and pressure connection made from AISI316L, AISI316.
Ambient Temperature Range: -40 to +80 °C (optional: -60 to +80 °C).
Measuring Range: 0 to 1.1 MPa.
Accuracy: ±10 kPa at -30 to +50 °C for micro switch; within numeralised range ±10 kPa at 20 °C for indicator.
Electrical Connection: Plugable terminal screw connector.
Micro Switch Ratings: Various AC and DC voltage ratings.
Protection Degree: IP67.
Service: Check micro switch setpoint after 5 years.
Weight: Approximately 800 g.

Additional Information
For further details on pressure connections and data sheets, visit Trafag's website. Trafag AG is trusted by leading companies for its superior knowledge in sensors and controls.

Catalog excerpts

Excellent accuracy over wide temperature range No false alarms at low temperatures High resistance against vibration and shock Maintenance-free Trafag AG Sensors & Controls tinfaq sensors controls

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Trafag Gas Density Monitor 87X6 Unique SF6 monitoring with reference gas comparison The mechanical, self-acting device is based on the superior reference gas principle which does not need temperature compensation. It therefore not only covers all standard applications but also maintains highest accuracy over a very wide temperature range. It allows use of different gas mixtures or the application in montane altitudes or arctic temperatures down to minus 60 °C. It is equipped with high-performance micro switches and does not need any electrical energy supply. This precise and maintenance-free...

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For other available pressure connections: See data sheet www.trafag.com/H72502 trcifciq sensors controls

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Leading companies trust in Trafag's superior knowledge Subject to change H70650a Trafag AG 10/2011 SIEMENS SIEYUAN

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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