---
title: QuadraTherm 640i Delivers the Data
description: Achieve unmatched accuracy and revolutionize your process efficiency with QuadraTherm 640i. The highest flow meter accuracy, user-friendly software, and field configurability make it the ultimate thermal flow meter. Download the free guide and make smarter decisions today. Contact us for more information.
---

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# QuadraTherm 640i Delivers The Data

## The Pinnacle of Performance 

#### Everything You Need

For engineers striving to improve process efficiency and reduce costs, accurate flow measurement is critical. QuadraTherm 640i with qMix is like no other thermal flow meter on the market. It delivers the data you need for smarter decisions, with unmatched accuracy.

##### Highest Accuracy

Achieve the highest flow meter accuracy (+/- 0.5% of reading)

##### 100% Field Configurable

Change gases & compositions, add multiple full scales, and adjust pipe size

##### User-Friendly Software

Use qMix™ software to easily create single gases or gas mixes in the field and retain accuracy.  No recalibration needed.

![640i_Quadra_Insert_Master](https://info.sierrainstruments.com/hs-fs/hubfs/Reservation%20blast%202021/640i_Quadra_Insert_Master.png?width=325&height=650&name=640i_Quadra_Insert_Master.png "640i_Quadra_Insert_Master")

![quadratherm_pdf_thumbnail_high](https://info.sierrainstruments.com/hubfs/quadratherm_pdf_thumbnail_high.png "quadratherm_pdf_thumbnail_high")

#### Learn 5 Ways You Can Revolutionize Your Process

Discover how QuadraTherm can help make you smarter and dramatically improve process efficiency.

 DOWNLOAD FREE GUIDE

### Have questions or need a quote? Contact us.

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