Advantages
Description
The USOM-200 ultrasonic oxygen sensor is a new type of gas sensor. It can be used to measure the concentration of the PSA oxygen generator. It uses UART digital output, LED lights to indicative test results.
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Range of concentration |
21%-95.6% |
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Resolution |
0.1% |
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Accuracy |
±1.8% FS @（5 - 55）℃ |
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Sample gas requirements |
Arefaction (No condensation) ; Dust filtration (<1um) |
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The spacing time of UART data |
500ms |
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Warm-up Time |
Sensor works as soon as power on; 10 seconds to within specified accuracy; |
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Digital Output |
9600bps UART 5V TTL / 3.3V CMOS |
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LED Output |
GREEN:Concentration >82% YELOW: 82%>Concentration>50% RED:50%> Concentration (Settings are adjustable according to customer’s requirement) |
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Direction |
Any side is ok |
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Working temperature |
10~50℃ |
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Storage temperature |
-5~65℃ |
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Working humidity |
5～85%RH |
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Maximum Pressure |
150 kPa |
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Power Supply |
DC 6.5-12VDC，50mA |
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Dimensions |
78mm x 24mm x 24mm ( L x W x H) |
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Weight |
20g |
Socket And Size（J2、J3 are 4P*2.0mm，J1、J5 is 3P*2.0mm）
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Socket number |
Function |
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J2 |
Power and Communication（UART） |
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J3 |
LED Output |
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J5 |
Power Supply |
Power and Communication Socket J2
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Pin1 |
+5V/10mA power output，or +12V power input |
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Pin2 |
RXD |
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Pin3 |
TXD |
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Pin4 |
GND |
Attention：The pin1 of J2 could either be the +12VDC power input, or the +5VDC power output. When there is external +12VDC applied to pin1, this pin acts as the power input. When there is no external voltage applied to pin1, it acts as the +5VDC output. The exchange is completed automatically. The customer can use just one connector to fulfill both power supply and digital output functions.
LED Output Socket J3
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Pin1 |
COM |
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Pin2 |
Green LED: O2>=82% |
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Pin3 |
Yellow LED: 82%>O2>=50% |
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Pin4 |
Red LED: 50%>O2 |
Power Supply Socket J5
|
Pin1 |
+12V Power |
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Pin2 |
NC |
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Pin3 |
GND |
UART communication parameters
Connect sensor pin Vin-RXD-TXD-GND with 12V-TXD-RXD-GND. （ Customers must use
3.3v/5vTTL level. RS232 level needs conversion）。
BaudRate: 19200
DataBits: 8
StopBits: 1
Parity(check bits): NO
Query Mode
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Host sends |
55 AA 7E 02 4F 43 94 0E 0D |
9 BYTE |
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The sensor answers |
55 AA 7E 04 4F 43 (Concentration -High) (Concentration -Low) (SUM)( XOR) 0D |
11 BYTE |
The Seventh and Eighth byte is concentration value.
The Ninth byte is Checksum from Fourth byte to Eighth byte.
The Tenth byte is XOR from Fourth byte to Eighth byte.
Concentration value% = (Concentration -High*256+ Concentration -Low)/10 .
Note: Query mode needs customization, if you need this mode, please communicate in advanc
