Siemens Solutions Partner - Comtherm are proud to be a solutions partner for Siemens UK

Looking for Econex Parts? - Comtherm are sole UK distributors of Econex Parts, we offer full technical support.

Images for representative purposes only - see description for exact details

Siemens QGO21.000D27 Oxygen Sensor

Siemens  |  SKU: SPA1262  |  Barcode: BPZ:QGO21.000D27
1.0 kg
£3,998.52 £4,862.35
Shipping & appropriate taxes calculated at checkout.

Unsure if this is the right choice for your equipment or project? Our technical team can verify compatibility, check supporting parts, and provide recommendations before you purchase.

📋 This message will include the product details and SKU you are currently viewing so we can discuss the exact parts with you.

We regularly support complex conversions and high-value equipment packages. If anything looks like it won't fit or is incomplete, we'll highlight it and suggest alternatives.

Delivery and Shipping

Dispatch Time
Dispatch within 2–5 days depending on supplier availability.
Express Delivery
Next Business Day (UK Mainland)
Free Shipping
Orders Over £100 (UK Mainland)
Tracking
Real-time Updates
  • Secure packaging for industrial components
  • Same day shipping available (on request)

Technical Support On Hand

Response Time
Within 2 Hours
Support Hours
Mon-Thurs: 8:30-17:00 GMT
Fri: 8:30-15:00 GMT
Live Chat
Support Available Online
Expert Engineers
Siemens Certified
  • Obsolete replacement part assistance
  • Comprehensive documentation library
  • Commissioning Support
  • Priority parts replacement service
Usually 14 Days 1

Description

QGO21.000D27 - O2 sensor

For combustion optimisation

Voltage: 120v

The QGO20... is an oxygen sensor designed for acquiring the residual oxygen content of flue gases in heat generation plant burning natural gas or light fuel oil. Together with the control unit, the QGO20... monitors and controls the combustion process.