Product Patent
Utility model patent certificate
①ZL200820028605.1 《Buttons and LCD display of digital instrument》
②ZL200920062360.9 《Constant current driving circuit with micro power consumption low voltage drop sensor》
Appearance design patent certificate
①ZL200830019531.0 《Instrument （Pressure Testing Gauge）》
Application
- For the level measure of well, pond, water tower, etc；
- For the level measure and monitoring of water conservancy and hydropower；
- Water level measurement of urban water supply and sewage treatment;
- Liquid level measurement and control in industrial field;
- Liquid level measuring for all kinds of open tank, water tank and liquid tank;
Product Characteristics
- Support liquid density modification, can be directly measured in different media；
- Acquisition speed （0.25～10）S/A (S=second, A=acquisition )， settable freely；
- Its development design of battery power supply, is convenient to replace the battery at any time；
- Buttons pressed with magnetic induction pen, exempt from interference, not easy to damage；
- Super Power Management Technology, battery life can be in service for 5~8 years；
- Broad 5 digits LCD display, very clear for eye-catching；
- Display the liquid level with percentage bar chart, easy to understand；
- Automatic temperature compensation technology, to reduce the error in harsh environment；
- Zero Self-Stability technology, with temperature compensation automatically, stability reliable；
-AES-128 encryption algorithm, network authentication and network authorization, high data security and reliability;
- automatic frequency hopping technology, has a unique ability to resist interference;
Product Parameters
Measure Range
0~1mH2O~200mH2O ( any scope within it )
Accuracy
0.05%F.S 、 0.1%F.S 、 0.2%F.S 、 0.5%F.S
Power Supply
One pc of built-in 3.6V high volume lithium battery
Acquisition Speed
（1～60）S/A ( S=second , A=acquisition )，default is 5S/A，time is settable
Stability
Superior to 0.1%FS/Year
Battery Service Life
One Built-in 3.6V high volume lithium battery, reference with environment temperature（16～25）℃
Acquisition Speed
1 A/S 1A/2S 1A/3S 1A/4S 1A/5S 1A/6S 1A/（7～60）S
Battery Life
3 years
Environmental Temperature
（-30～70）℃
Relative Humidity
＜90%
Atmospheric Pressure
（86～106）kPa
Others
Correction reference environment temperature: ：20℃±2℃
When 0.05%F.S , the gauge environment temperature ：（0～50）℃
The Medium temperature
Normal （-40～120）℃
Wide Temperature（-60～150）℃
Display
5 digits LCD display + percentage bar chart
Protection Grade
IP65
Explosion proof Grade
ExiaIICT4 Ga
Overload Pressure
(1.5～3）times of the range, depends on the measure range .
Wireless Technology
Wireless Spectrum
ISM（2.4~2.5）GHz（IEEE 802.15.4 DSSS）
Wireless authentication
a、Zigbee：FCC ID: MCQ-XBS2C，IC: 1846A-XBS2C
b、Wireless HART：IEC 62591 HART，GB/T 29910.1～6-2013 HART
Wireless Protocol
a、Zigbee：Zigbee 2007（compatible with CNPC ‘s 11-GRM Communication Protocol）
b、WirelessHART：IEC62591
Receive Sensitivity
a、ZigBee：-100dBm
b、WirelessHART：-95dBm
Transmit Power
8dBm（6.3mW）
Communication Distance
300m、800m
Network Security
AES-128 encryption algorithm, network authentication and network authorization
Anti-interference Ability
Automatic frequency hopping
Lectotype
