Water level gauge series
Pluviometer series
Gate level gauge series
Evaporation station series
Display instrument series
Flow velocity series
Flood warning series
Groundwater monitoring equipment
Gate control system
Pumping station control system
Geological disaster prevention
Dam monitoring system
Water regime measuring and reporting system
Telemetry terminal products
Soil moisture monitoring system
Agricultural well irrigation control system
Groundwater level automatic monitoring system
Evaporation station series
FFZ-01P digital platform system equipment for water surface evaporation observation
1. introduction:
The platform system of water surface evaporation t≥ype FZ-01P digital observation (hereinafter referred↔ to as the "digital platform system" or "system") is a kind of suitable for both 20m2, 5m2 an d 1m2 used as evaporation ponds, water evaporation equipment, complete sys≈tem of automatic observation includes: water evaporati→on type FFZ-01 digital meter, JFZ-01 digital gauge, NC, NC overflow a water supply tank, acquisition control box, matching circuit, computer system and otheφr water facilities.
The digital observation platform technical performance parameters all reached €the People''s Republic of China Ministry of water conserva©ncy and electric power "evaporation observation standards" SD265-88 and Chinese Meteorologi®cal Bureau in 2003 edition of "meteorological observation standard" requirements, the Ωresolution, the measuring accuracy of the highest degree of autom↓ation, the highest evaporation digital observation platform.
2. system composition, working principle
The working principle of the system: the water evaporation observation syst∞em based on digital platform, atmometer ombrometer, overflow bucket for↓ basic observation instruments, the collector automatic acquisition, processing and display of ♦evaporation and precipitation, the overflow process information, automatic control o£f evaporation pool, overflow well fill and drainage process. The collector through the §RS485/232 communication interface with the host computer system, data εcommunication machine (RTU) connection, remote monitoring can be achieved by the water evπaporation process information by using the application software syst★em supporting the data processing and storage.
The water level of the evaporation pool should be kept on the water marλk line in the digital platform system for water surface evaporation observation.> In the absence of precipitation day, the collector automatically collects the change of water® surface height in the evaporation tank, and calculates the evapo§ration amount. When the height of the water evaporation ponds to the agreed value (water mark line 10mm), collector in the observation on the boundary (boundary for 8:00 γmoment hydrological, meteorological demarcation foπr 20:00) B3 to control water pump, automatic water evaporation pool, the pool water level recoveφry to the water mark line height, then, to as the height of water after the measur∏ing points, measuring evaporation of the next time.
In rainy days, when the water level rises to the agreed↑ value of evaporation pool (water mark line above 10 mm), B1 drive pump overflow coΩllector, the evaporation tank flows into the overflow , overflow when the water level reached the agreed value when the overflow end >of the process, calculation of flow data acquisition after the start of the overflo"w drain pump B2, the overflow buckets of water discharged to the p♠rescribed height of bottom water.
According to the "water surface evaporation observation standard" and <the "surface meteorological observation specification" stipulated by the State Met≠eorological Administration, the calculation formulaπ of evaporation amount is as follows:
Evaporation amount = (evaporation water level measurement value of evapo®ration pool water level initial value) + precipitation overflow flow
The upper form can be simplified as:
QF = (Wt-W0) +Qj-Qy
Formula: QF: represents evaporation of water surfa↑ce, unit: mm
Wt: the evaporation pool water level indicating the measurement ti≠me (T), unit: mm
W0: the evaporation pool water level at the initial mome nt. Unit: mm
The Wt and W0 values are automatically measured by FFZ-01 digital water surface evaporati♦on meter.
Qj said: the precipitation period is measured, the Qj value from the JFZ-01 digital gauge, unit: ≥mm
Qy: to indicate the overflow in the tested period, and the Qy val'ue is automatically measured by the numerical control overflow well. Unit: mm
3 main performance parameters:
3.1 water level variation of evaporation pool:
The water level standard line is base: 20mm
3.2 resolution:
Resolution of A. evaporation measurement: 0.1mm
B. precipitation resolution: 0.1mm
C. flow measurement resolution: 0.01mm
3.3 measurement accuracy:
System measurement error (F a.) without precipitation:
Delta F= delta f
In 8 F said the measurement error of digital atmometer, less than 3% of F.
B. has no overflow when precipitation occurs:
Delta F= delta f + delta J
In the delta J as the measuring error of JFZ-01 type dig≠ital gauge
8 J less than 0.2mm (precipitation is less than 10mm∑, when)
Delta j + 0.2mm + 1%*FS (precipitation is not less than 10mm)
C. has precipitation and produces overflow:
Delta F=, F + L, j
In the delta f less than 0.02mm*N where N is the number of αoverflow drain
The 3.4 collector clock accuracy: 4 minutes / month
3.5 PC function:
Data table form:
(1) water surface evaporation, precipitation, overflow information display (≠monthly report, annual report)
(2) the curve of water surface evaporation, precipitation and over£flow discharge (monthly curve and annual curve)
(3) histogram of water surface evaporation, precipitation and overflowλ discharge (monthly histogram and annual histogram)
(4) histogram of water surface evaporation, precipitation and overflow discharge (monthly $histogram and annual histogram)
(5) alarm information: equipment status (leakage) alarm, p>ower supply voltage alarm
4. equipment installation (omitted)
4.1 infrastructure
4.2 installation of instrument and equipment
The use and maintenance of 5. system equipment
5.1 commissioning and inspection before operation
5.2 trial run record
5.3 use and maintenance
6. troubleshooting
1. introduction:
The platform system of water surface evaporation t≥ype FZ-01P digital observation (hereinafter referred↔ to as the "digital platform system" or "system") is a kind of suitable for both 20m2, 5m2 an d 1m2 used as evaporation ponds, water evaporation equipment, complete sys≈tem of automatic observation includes: water evaporati→on type FFZ-01 digital meter, JFZ-01 digital gauge, NC, NC overflow a water supply tank, acquisition control box, matching circuit, computer system and otheφr water facilities.
The digital observation platform technical performance parameters all reached €the People''s Republic of China Ministry of water conserva©ncy and electric power "evaporation observation standards" SD265-88 and Chinese Meteorologi®cal Bureau in 2003 edition of "meteorological observation standard" requirements, the Ωresolution, the measuring accuracy of the highest degree of autom↓ation, the highest evaporation digital observation platform.
2. system composition, working principle
The working principle of the system: the water evaporation observation syst∞em based on digital platform, atmometer ombrometer, overflow bucket for↓ basic observation instruments, the collector automatic acquisition, processing and display of ♦evaporation and precipitation, the overflow process information, automatic control o£f evaporation pool, overflow well fill and drainage process. The collector through the §RS485/232 communication interface with the host computer system, data εcommunication machine (RTU) connection, remote monitoring can be achieved by the water evπaporation process information by using the application software syst★em supporting the data processing and storage.
The water level of the evaporation pool should be kept on the water marλk line in the digital platform system for water surface evaporation observation.> In the absence of precipitation day, the collector automatically collects the change of water® surface height in the evaporation tank, and calculates the evapo§ration amount. When the height of the water evaporation ponds to the agreed value (water mark line 10mm), collector in the observation on the boundary (boundary for 8:00 γmoment hydrological, meteorological demarcation foπr 20:00) B3 to control water pump, automatic water evaporation pool, the pool water level recoveφry to the water mark line height, then, to as the height of water after the measur∏ing points, measuring evaporation of the next time.
In rainy days, when the water level rises to the agreed↑ value of evaporation pool (water mark line above 10 mm), B1 drive pump overflow coΩllector, the evaporation tank flows into the overflow , overflow when the water level reached the agreed value when the overflow end >of the process, calculation of flow data acquisition after the start of the overflo"w drain pump B2, the overflow buckets of water discharged to the p♠rescribed height of bottom water.
According to the "water surface evaporation observation standard" and <the "surface meteorological observation specification" stipulated by the State Met≠eorological Administration, the calculation formulaπ of evaporation amount is as follows:
Evaporation amount = (evaporation water level measurement value of evapo®ration pool water level initial value) + precipitation overflow flow
The upper form can be simplified as:
QF = (Wt-W0) +Qj-Qy
Formula: QF: represents evaporation of water surfa↑ce, unit: mm
Wt: the evaporation pool water level indicating the measurement ti≠me (T), unit: mm
W0: the evaporation pool water level at the initial mome nt. Unit: mm
The Wt and W0 values are automatically measured by FFZ-01 digital water surface evaporati♦on meter.
Qj said: the precipitation period is measured, the Qj value from the JFZ-01 digital gauge, unit: ≥mm
Qy: to indicate the overflow in the tested period, and the Qy val'ue is automatically measured by the numerical control overflow well. Unit: mm
3 main performance parameters:
3.1 water level variation of evaporation pool:
The water level standard line is base: 20mm
3.2 resolution:
Resolution of A. evaporation measurement: 0.1mm
B. precipitation resolution: 0.1mm
C. flow measurement resolution: 0.01mm
3.3 measurement accuracy:
System measurement error (F a.) without precipitation:
Delta F= delta f
In 8 F said the measurement error of digital atmometer, less than 3% of F.
B. has no overflow when precipitation occurs:
Delta F= delta f + delta J
In the delta J as the measuring error of JFZ-01 type dig≠ital gauge
8 J less than 0.2mm (precipitation is less than 10mm∑, when)
Delta j + 0.2mm + 1%*FS (precipitation is not less than 10mm)
C. has precipitation and produces overflow:
Delta F=, F + L, j
In the delta f less than 0.02mm*N where N is the number of αoverflow drain
The 3.4 collector clock accuracy: 4 minutes / month
3.5 PC function:
Data table form:
(1) water surface evaporation, precipitation, overflow information display (≠monthly report, annual report)
(2) the curve of water surface evaporation, precipitation and over£flow discharge (monthly curve and annual curve)
(3) histogram of water surface evaporation, precipitation and overflowλ discharge (monthly histogram and annual histogram)
(4) histogram of water surface evaporation, precipitation and overflow discharge (monthly $histogram and annual histogram)
(5) alarm information: equipment status (leakage) alarm, p>ower supply voltage alarm
4. equipment installation (omitted)
4.1 infrastructure
4.2 installation of instrument and equipment
The use and maintenance of 5. system equipment
5.1 commissioning and inspection before operation
5.2 trial run record
5.3 use and maintenance
6. troubleshooting
