# O2 sensor for testo combustion analyzers, model 327-1 / 330-1 LO2

**URL:** https://aio.lv/en/product--testo-0390-0047--4307088
**Data updated:** 2026-01-07 08:59 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** testo
**Manufacturer code:** 0390 0047
**EAN:** 4016138713961
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 159.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 132.22 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--testo-0390-0047--4307088

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.99 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

O2 sensor compatible with testo combustion analyzers, designed for models 327-1 and 330-1 (LO2). Provides accurate oxygen measurement in flue gases for combustion analysis, burner tuning and emissions checks. Intended as a replacement or spare part to restore analyzer functionality and ensure reliable gas measurement during maintenance and inspections.

## Long description

Testo O2 sensor Type LO2, compatible with Testo 327-1 and 330-1 models (MPN 0390 0047, EAN 4016138713961). This replacement oxygen sensor is designed for use in testo flue gas and combustion analyzers to measure oxygen concentration accurately during combustion analysis and emissions testing.
Advantages
The sensor offers direct compatibility with Testo 327-1 and 330-1 analyzers and is supplied under the original manufacturer part number to ensure correct fit and function. It provides reliable oxygen measurement performance and is intended as an exact replacement to maintain analyzer accuracy.
Suitable for
Replacement oxygen sensor for Testo 327-1
Replacement oxygen sensor for Testo 330-1
Combustion analysis and flue gas measurement tasks
Key specifications
Brand: testo
Model compatibility: Testo 327-1, Testo 330-1
Type: LO2 oxygen sensor
Manufacturer part number (MPN): 0390 0047
EAN: 4016138713961
How to use
Turn off the analyzer and follow the manufacturer’s instructions to remove the old sensor. Install the Testo LO2 sensor into the sensor port, ensuring a secure connection. Power on the analyzer and allow any required warm-up or calibration procedure as described in the analyzer user manual before taking measurements.
Usage recommendations
Store the sensor in a dry, dust-free environment when not in use, and replace it according to the analyzer manual or when measurement drift or sensor warnings occur. Use original testo parts to ensure measurement reliability and safety.

## FAQ

### How much does the O2 sensor testo 327-1 / 330-1 LO2 cost, and is it available for purchase?

The price is 159.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 28 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 15.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All testo products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized testo service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/4307088/68660331_large.webp