SGM70XX Datasheet, PDF (1/9 Pages) List of Unclassifed Manufacturers – Pressure independent & temperature compensated

Datasheet – SGM7001, SGM7002, SGM7004, SGM7006
Sensirion CMOSens^® G1.6, G2.5, G4 and G6 Gas Flow Meter Modules
 Pressure independent & temperature compensated
 Automatic compensation for gas quality
 Accuracy ±1.5% – 3% m.v.
 Long-term reliability
 Low power consumption
 Zero offset, no drift
Product Summary
The SGM70xx sensors are Sensirion’s digital gas flow
meter modules designed for residential natural gas smart
metering applications. They measure the standard
volume flow of natural gas independent of
temperature and pressure.
Gas meters with SGM70xx as core metrological unit can
fulfill international accuracy and reliability standards
defined in EN14236. The patented design of the flow
channel and the patented pulsed measurement scheme
ensure robust and reliable flow measurements under
demanding working conditions and under low power
consumption.
The automatic gas quality compensation mechanism
assures accurate measurements even with varying
natural gas composition.
Applications
 Residential Smart Gas Metering
The sensor chip
The SGM70xx gas flow meter modules feature Sensirion’s
state-of-the-art CMOSens® flow chip. CMOSens® flow
chips are qualified and produced by Sensirion to stringent
automotive and medical standards.
The CMOSens® chip not only contains a thermal mass
flow sensor element, but also the amplifier, A/D converter,
calibration memory, digital signal processing circuitry, and
interface. Due to seamless integration of signal acquisition
and processing on the single silicon die, significant
performance, reliability and cost benefits are achieved.
The standard volume flow (“mass flow”) output and I²C
digital interface make this sensor highly suitable for smart
gas metering applications.
The outstanding performance of these sensors is based
on Sensirion’s patented CMOSens^® Technology, which
combines the sensor element, signal processing and
digital calibration on a single microchip.
The well-proven CMOSens® Technology, with several
hundred thousand gas flow meters modules in the field, is
perfectly suited for high-quality mass production and is an
ideal choice for high-volume residential smart gas
metering applications.
SGM70xx integration into a gas meter
Sensirion provides the SGM70xx module only. It is the
responsibility of the customer to:
 Design and build the gas meter housing
 Ensure correct mounting of SGM70xx module in
the gas meter housing
 Implement communication between SGM70xx
module and gas meter electronics
 Fine-tune calibration of the gas meter in air only
 Test gas meter in air only
Every SGM70xx sensor is individually pre-calibrated,
linearized and temperature compensated with air and a
surrogate gas of methane. The automatic gas quality
compensation can either be configured for measurements
in H-gas or L-gas (configuration for L-gas under
development).
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