Datasheet

GMS-10 RVS Series
Oxygen Sensors
DESCRIPTION
The GMS-10 is a high accuracy, zirconia-based oxygen
sensor. The ability of the sensor to operate without any
reference gas makes it ideal for potential applications such as
combustion control or aircraft oxygen generation systems.
The sensor employs two ZrO
2
discs with a small hermetically
sealed chamber in between. One of the discs functions as a
reversible oxygen pump, which is used to successively fill and
empty the chamber. The second disc measures the ratio of the
partial pressure difference and generates a corresponding
sense voltage.
A heat element produces the 700 °C [1292 °F] required for the
ZrO
2
to operate as an O
2
pump. The time taken for the pump to
achieve specific minimum and maximum pressures within this
chamber is a measure of the partial oxygen pressure of the
environment.
The GMS-10 must be operated by an electronic measuring
circuit that controls the sensor operation and signal processing.
This circuit can either be incorporated into the customer’s own
electronics, or be purchased as a separate interface board
from Honeywell.
FEATURES
High-accuracy measurement
Low power consumption
No reference gas required
Linear output signal
No need for temperature stabilization
Function testing and calibration in ambient air
Long life
POTENTIAL APPLICATIONS
Boiler combustion controls
Aircraft oxygen generation systems