Datasheet

PRODUCT INFORMATION
PRODUCT INFORMATION
ø9.2±0.2
7.8±0.5
10.0
±1.0
3.6±0.1
1
2
3
Sensing
element
4
3.6±0.1
ø8.1
±0.2
ø0.55
±0.05
ø5.1
90˚
1.6
1.
6
ø0.5 x 6
0.9
0.9
Structure and Dimensions:
FIGARO USA, INC.
121 S. Wilke Rd. Suite 300
Arlington Heights, IL 60005
Phone: [phone]
Fax: [phone]
e-mail: figarousa@figarosensor.com
Basic Measuring Circuit:
REV: 01/05
The sensor requires two voltage inputs:
heater voltage (VH) and circuit voltage
(VC). The heater voltage (VH) is applied
to the integrated heater in order to main-
tain the sensing element at a specific
temperature which is optimal for sensing.
Circuit voltage (VC) is applied to allow
measurement of voltage (Vout) across
a load resistor (RL) which is connected
in series with the sensor.
DC voltage is required for the circuit
voltage since the sensor has a polarity.
A common power supply circuit can be
used for both VC and VH to fulfill the
sensor's electrical requirements. The
value of the load resistor (RL) should be
chosen to optimize the alarm threshold
value, keeping power consumption (PS)
of the semiconductor below a limit of
15mW. Power consumption (PS) will be
highest when the value of Rs is equal
to RL on exposure to gas.
The value of power consumption (PS)
can be calculated by utilizing the follow-
ing formula:
PS =
Sensor resistance (Rs) is calculated with
a measured value of Vout by using the
following formula:
RS = - RL
Specifications:
Bottom view
Top view
Side view
VC x RL
Vout
(VC - Vout)
2
RS
rebmunledoM 00B-0062SGT
epyttnemelegnisneS 1D
egakcapdradnatS naclatem5-OT
sesagtegraT stnanimatnocriA
egnarnoitcetedlacipyT Hfompp03~1
2
tiucricdradnatS
snoitidnoc
egatlovretaeH
V H 0.5 ± CA/CDV2.0
egatlovtiucriC
V
C
0.5 ± CDV2.0 sP ≤ Wm51
ecnatsiserdaoL
R L elbairaV k54.0
Ω
.nim
lacirtcelE
scitsiretcarahc
tsetdradnatsrednu
snoitidnoc
ecnatsiserretaeH
R H
38.xorppa
Ω
.pmetmoorta
)lacipyt(
tnerrucretaeH
I
H
24
±
Am4
rewopretaeH
noitpmusnoc
P H Wm012 V H CDV0.5=
ecnatsiserrosneS
sR k09~k01 Ω riani
ytivitisneS
)sRfooitaregnahc(
6.0~3.0
Hfompp01(sR 2 )
)ria(sR
tsetdradnatS
snoitidnoc
snoitidnocsagtseT
rialamron
02ta ± 56,C˚2 ± HR%5
snoitidnoctiucriC
V C 0.5= ± CDV10.0
V H 0.5= ± CDV50.0
doirepgninoitidnoC
tseterofeb
syad7
Pin connection:
1: Heater
2: Sensor electrode (-)
3: Sensor electrode (+)
4: Heater
For information on warranty, please refer to Standard Terms and Conditions of Sale of
Figaro USA Inc. All sensor characteristics shown in this brochure represent typical
characteristics. Actual characteristics vary from sensor to sensor. The only characteristics
warranted are those in the Specification table above.
u/m: mm