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Technical

Datasheet

Performance Vapour Pressure andGas Filled Temperature Switches

721/2/3, 731/2/3/4,771/2/3/4 & 781Issue G

700 Series

Precision stainless steel mechanism for arduousatmospheres and high humidity. Set point adjustable over whole range against calibratedscale with tamperproof adjuster. Weatherproof and Flameproof models. Models for fixed switching differential,adjustable differential and HI-LO operation. Hermetically sealed microswitch option. ATEX and IECEx

Product applications Performance characteristics

The 721 is suitable for a wide range ofapplications in many Industry sectors: Enclosure Oil & Gas IP66 Protection Chemical Petrochemical System options Refining Stainless Steel capillary system and Brass Bellows(standard) Power Food Industry Stainless Steel capillary system and Bellows Rigid stem. The choice of models available ensuresthat the 721 is suitable for use in: Standard Electrical ratings Corrosive atmospheres Refer to table 6 Resistant to chemical attack Process connection 3/8 NPT External Sliding Gland, ½ NPT External Direct mounting.

How can we help you?

Delta Controls’ range of reliablepressure and temperaturemeasurement instruments can be customised to meet individualrequirements. For technical advice or todiscuss your application please contact us on +44 (0) 20 8939 3500 Unit weight Between 2.2kg – 8.7kg (4.8lb – 19.1lb) Accuracy Set point repeatability ± 0.5% of span at 20 °C / 68 °F ambient. Scale accuracy ± 2% of full scale.

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TDS. 721. 0805 ISSUE G