Structure and Dimensions:
Standard Circuit Conditions:
Pin Connection and Basic Measuring Circuit:
The numbers shown around the sensor symbol in the circuit diagram at the right
correspond with the pin numbers shown in the sensor's structure drawing (
above).
When the sensor is connected as shown in the basic circuit, output across the Load
Resistor (VRL) increases as the sensor's resistance (Rs) decreases, depending on
gas concentration.
Sensor Resistance (Rs) is calculated by
the following formula:
Rs = (
-1) x RL
VC
VRL
Power dissipation across sensor electrodes (Ps)
is calculated by the following formula:
Ps =
VC2 x Rs
(Rs + RL)2
Standard Test Conditions:
TGS 813 complies with the above electrical characteristics
when the sensor is tested in standard conditions as specified
below:
Test Gas Conditions:
20
°±2°C, 65±5%R.H.
Circuit Conditions:
VC = 10.0
±0.1V (AC or DC),
VH = 5.0
±0.05V (AC or DC),
RL = 4.0k
Ω±1%
Preheating period before testing: More than 7 days
Electrical Characteristics:
Basic Measuring Circuit:
REV: 9/02
1 Sensing Element:
SnO2 is sintered to form a thick film on
the surface of an alumina ceramic tube
which contains an internal heater.
2 Cap:
Nylon 66
3 Sensor Base:
Nylon 66
4 Flame Arrestor:
100 mesh SUS 316 double gauze
FIGARO USA, INC.
3703 West Lake Ave. Suite 203
Glenview, Illinois 60025
Phone:
(847)-832-1701
Fax:
(847)-832-1705
email: figarousa@figarosensor.com
For information on warranty, please refer to Standard Terms and
Conditions of Sale of Figaro USA Inc.
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