Witam posiadam taki układ pomiarowy ( załącznik). Niestety na wyjściu wzmacniacza ciągle brak napięcia. Próbowałem na wejście IN- również podawać jakieś niskie napięcia lecz na wyjsciu również nie uzyskałem napięcia. Czy może mi ktoś powiedziec co robię nie tak? http://obrazki.elektroda.pl/7337234600_1476864512_thumb.jpg Dodano po 4 : Dodam jeszcze że złącze ZCO to wyjście z czujnika. Dane w nocie katalogowej.
PRODUCT INFORMATION
TGS 5042 - for the detection of Carbon Monoxide
Features:
Applications:
* Battery operable
* High repeatability/selectivity to CO
* Linear relationship between CO gas
concentration and sensor output
* Simple calibration
* Long life
* UL recognized component
* Meets UL2034, EN50291, and RoHS
requirements
* Residential and commercial CO detectors
* CO monitors for industrial applications
* Ventilation control for indoor parking garages
* Recreational vehicle CO detectors
* Marine CO detectors
* Fire detection
Figaro’s TGS5042 is a battery operable electrochemical sensor which offer several
advantages over traditional electrochemical sensors. Its electrolyte is environmentally
friendly, it poses no risk of electrolyte leakage, can detect concentrations as high
as 1% CO, operates in a range from -40˚ and +70˚C, and it has lower sensitivity to
interferant gases. With a long life, good long term stability, and high accuracy, this
sensor is the ideal choice for CO detectors with digital display. OEM customers will
find individual sensors data printed on each sensor in bar code from, enabling users
to skip the costly gas calibration process and allowing for individual sensor tracking.
TGS5042 utilizes a standard AA battery-sized package.
The figure below represents typical sensitivity characteristics,
all data having been gathered at standard test conditions (see
reverse side of this sheet). The Y-axis shows theoutput current
of the sensor (Iout/µA) in each gas. Output current is linear
to CO concentration, with a deviation of less than ±5% in the
range of 0~500ppm.
The figure below represents typical temperature dependency
characteristics. The Y-axis shows the sensor output ratio (I/Io)
as defined below. The linear relationship between I/Io and CO
concentration is constant regardless of the CO concentration
range.
I = Sensor output current in 400ppm of CO at various
temperatures
Io = Sensor output current in 400ppm at 20˚C/50%RH
Sensitivity Characteristics:
Temperature Dependency:
2.0
2.0
1.5
1.5
CO
H2
Ethanol
CH4
Iso-butane
1.0
Iout(µA)
0.5
1.0
I/Io
0.5
0.0
-0.5
0.0
0
200
400
600
Gas concentration (ppm)
800
1000
-40
-20
0
20
40
60
Temperature (˚C)
IMPORTANT NOTE: OPERATING CONDITIONS IN WHICH FIGARO SENSORS ARE USED WILL VARY WITH EACH CUSTOMER’S SPECIFIC APPLICATIONS. FIGARO STRONGLY
RECOMMENDS CONSULTING OUR TECHNICAL STAFF BEFORE DEPLOYING FIGARO SENSORS IN YOUR APPLICATION AND, IN PARTICULAR, WHEN CUSTOMER’S TARGET
GASES ARE NOT LISTED HEREIN. FIGARO CANNOT ASSUME ANY RESPONSIBILITY FOR ANY USE OF ITS SENSORS IN A PRODUCT OR APPLICATION FOR WHICH SENSOR HAS
NOT BEEN SPECIFICALLY TESTED BY FIGARO.
Basic Measuring Circuit:
C1
The diagram at the right shows the basic measuring circuit of
TGS5042. The sensor generates a minute electric current which is
converted into sensor output voltage (Vout) by an op-amp/resistor
(R1) combination.
R1
1µF
1MΩ
Figaro recommends the following electrical parts:
R1 : 1MΩ
C1 : 1µF
IC : AD708
-
Working
+
IC
TGS5042
NOTE: When voltage is applied to the sensor output terminal, the
sensor may be damaged. Voltage applied to the sensor should be
strictly limited to less than ±10mV. An additional resistor or FET is
required to prevent polarization of the sensor when Vc is off.
Vout
Counter
Basic measuring circuit of TGS5042
Specifications:
Structure and Dimensions:
Specification
0 ~ 10,000ppm
Output current in CO
1.2~2.4nA/ppm
Baseline offset
-10˚C ~ +60˚C (continuous)
-40˚C ~ +70˚C (intermittent)
Working electrode
ø8.5±0.3
within 60 seconds
-10˚C ~ +60˚C (continuous)
-40˚C ~ +70˚C (intermittent)
approx. 12g
20±2˚C, 40±10%RH
Ribbon*1
49.7±1.0
Weight
Standard test conditions
1.25±0.25
5 ~ 99%RH (no condensation)
Storage conditions
90±4˚
50.2±1.5
Operating humidity
Response time (T90)
Top view
4.0±0.1
& lt; ±10ppm equivalent
Operating temperature
4.15±0.8
2.0±1.0
Typical detection range
(*) represents sensor output in air under operating
conditions
(Ribbon thickness:
0.15 mmT)
Side view
49.7±1.0
Carbon monoxide
4.0±1.0
Target gases
3.0±1.5
20.9±0.05
0.20±0.12
TGS5042-A00 (pin version)
TGS5042-B00 (ribbon version)
TGS5042-B00
8.3±0.05
Model number
TGS5042-A00
0.8±0.05
Item
Cutting point
ø14.1±0.6
ø14.1±0.6
Insulation tube
NOTE: When ordering, please be sure to specify the
full model number, includng the suffix.
20.9±0.05
4.0±0.1
0.8±0.05
90±4˚
3.0±1.5
2.0±1.0
4.0±1.0
7.5±0.1
8.3±0.05
0.8±0.05
4.15±0.8
Counter electrode
Bottom view
unit: mm
NOTE 1: When the sensor is shipped, the working electrode and counter electrode are connected
(i.e. short circuited) by mounting on conductive mat (-A00) or a metal ribbon (-B00) in order to avoid
polarization of the electrodes. To measure the sensor output, the sensor should be removed from, the mat
(-A00) or the ribbon should be cut (-B00) and the sensor connected to a measuring circuit (see example
above). The cutting point as indicated can be used to cut the ribbon easily.
For information on warranty, please refer to Standard Terms and Conditions of Sale of
Figaro USA Inc.
REV: 03/13
FIGARO USA INC.
121 S. Wilke Rd. Suite 300
Arlington Heights, IL 60005 USA
Tel: 847-832-1701
Fax: 847-832-1705
email: figarousa@figarosensor.com