英国 Delta-controls 700系列 温度开关/781

781 TEMPERATURE SWITCH

Performance Series

Hi-Lo Switching

The model 781 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
•  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
•  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.
•  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.

1. DOCUMENTATION

2. Operational instructions

3. IOM-700.pdf
4. ATEX Ex d
5. IECEx Ex d
6. GPN Permit (Belarus)

7. Approvals

   Technical datasheet

8. TDS-700.pdf
9. SUPPORT
10.  
11. Technical advice 
12. Installation support 
13. Recalibration 
14. Local support 
15. Instrumentation repairs 
16. Spare parts

17. 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.

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

• This is the introduction of the Delta-controls  model 781  Pressure Switch  ,if you are interesting in it ,please contact us.