SFM4100 datasheet(5/9 Pages) ETC2

5 / 9 page

www.sensirion.com

Version 1.3 – January 2013

5/9

5. Conversion to Physical Values

5.1

Signal scaling and physical unit

The calibrated signal read from the sensor is a signed

INTEGER number (two's complement number). The

INTEGER value can be converted to the physical value by

dividing it by the scale factor (mass flow = sensor output



scale factor). The scale factor is specified in Section 2.2.

5.2

Temperature compensation

The SFM4100 sensor series features digital temperature

compensation. The temperature is measured on the

CMOSens® chip by an on-chip temperature sensor. This

data is fed to a compensation circuit that is also integrated

on the CMOSens® sensor chip. No external temperature

compensation is necessary.

6. OEM Options

A variety of custom options can potentially be

implemented for high-volume OEM applications. None of

these options is available with the standard sensors.

Contact Sensirion for more information.

6.1

Switch function

A switch version with a programmable trigger level and

programmable hysteresis can be realized.

6.2

Temperature measurement

The sensor temperature can be read out via the digital

interface.

6.3

Minimized power consumption

For low-power applications, the current consumption can

be reduced to approximately 3.5mA.

6.4

Broken sensor element detection

Breakage of the sensor element can be detected by a

sensor chip self-test.

6.5

Plausibility checks

An OEM version of the sensor can be configured to provide

certain plausibility checks triggered by a microprocessor. This

can be used to create a combined sensor/microprocessor

system that can be certified as fail-safe.

6.6

Multigas / Multirange Option

The Sensor can be calibrated for the use with multiple

Gases and/or for multiple flow ranges.

6.7

Gas Mixture Detection

In combination with a external microprocessor the Sensor

can be used to also asses the concentration of many two

gas mixtures. This feature can be made available for high

volume applications. Please contact Sensirion for details.

6.8

Customer-specific interface

For analog voltage output, please contact Sensirion.

SFM4100 Datasheet(PDF) 5 Page - List of Unclassifed Manufacturers

SFM4100 Datasheet(HTML) 5 Page - List of Unclassifed Manufacturers

Html Pages

1 2 3 4 5 6 7 8 9

Datasheet Download

Link URL