英國 Delta-controls 700系列 溫度開關/721

721 TEMPERATURE SWITCH

Performance Series

Fixed Deadband

The model 721 Gas Filled Temperature Switch has a flexible thermal system and is suitable for setpoints between -50°C and 300°C with maximum working temperatures up to 310°C

• FEATURES & BENEFITS

1.  
2.  Better than 1% set-point repeatability
   Users can expect a set-point repeatability performance better than 1% on all configurations with some configurations being significantly better
3.  Extensive range of options
   The Performance Series switches are available with an extensive range of materials, process connections, switch types, electrical entries, etc and offer customers many millions of different possible configurations.
4.  More than 35 years experience in the field
   Installed in a wide range of applications from nuclear power plants to offshore oil rigs, the Performance Series’ long experience in the field offers customers the reassurance that they can be relied upon to survive the test of time in the harshest environments.
5. DOCUMENTATION

6. Operational instructions

7. IOM-700.pdf
8. ATEX Ex d
9. IECEx Ex d
10. GPN Permit (Belarus)

11. Approvals

    Technical datasheet

12. TDS-700.pdf
13. SUPPORT
14.  
15. Technical advice 
16. Installation support 
17. Recalibration 
18. Local support 
19. Instrumentation repairs 
20. Spare parts
21.  

Designed in the mid-1970s and developed over subsequent years, the Performance Series switch range offers users the broadest range of options, the highest levels of set-point repeatability and the confidence of long term performance that a mature product such as this can prove.

The model 721 Performance Series Gas Filled Temperature switches comprise an armoured capillary attached to the sensing bulb via a semi-rigid extension on which a compression gland slides to enable various depths of thermowell (pocket) to be accomodated. This sensor is coupled to the microswitch via a precision stainless steel mechanism, the combination of which helps deliver the market leading performance customers can expect from the Series.

• Ranges available up to 300°C
• Weatherproof IP66 enclosures in zinc alloy or stainless steel
• ATEX and IECEx Ex d Flameproof models available
• Environmentally and Hermetically sealed switch options
• Set-point adjustable over the full range against a calibrated scale with tamperproof adjuster

• This is the introduction of the Delta-controls  model 721  Pressure Switch  ,if you are interesting in it ,please contact us.