PFG-2085 Online Fluorine Ion Analyzer User's Manual Chapter Fluoride Ion Features 1.1 All-intelligent Basic Functions 1. High-intelligence: On-line fluoride ion meter uses high-accuracy AD conversion and single-chip microcomputer processing technology to complete the fluoride ion concentration And temperature measurement, automatic temperature compensation, instrument self-test and other functions.
2, high reliability: components integrated into the block circuit board, there is no complicated function switch and adjustment knob.
3, strong anti-interference ability: the use of new devices, current output using optocoupler isolation technology, anti-interference ability to achieve remote transmission. Has good electromagnetic compatibility.
4, waterproof and dustproof design: protection and other IP65, suitable for outdoor use.
5, automatic timing calibration: to ensure that the instrument measurement stability and reliability.
6, RS485 communication interface: can be easily connected to the computer for monitoring and communications.
7. Solution grounding: Eliminate ground loop interference.
1.2 Convenient Chinese menu operation 1. Chinese liquid crystal display, Chinese operation menu, Chinese note: using the menu structure, similar to the microcomputer operation, the operation is simple, the operation steps throughout the Chinese tips, can be done without instructions, you can easily complete.
2. Simultaneous display of multiple parameters: Displays the concentration value, temperature, time, and status on the same screen.
1.3 Abundant practical functions 1. Notepad function The notepad records the operating conditions of the instrument and the time when the alarm occurred. It is easy to manage.
2. Each calibration mode, time, and result of the monitoring electrical function are recorded to facilitate the query and analysis of electrical variation.
3. The digital clock function provides a time reference for various functions.
4. The excellent display mode uses a 192×64 dot matrix graphic LCD display with backlight to achieve graphic and Chinese display. Adjustable uniform background light, clear observation in dark outdoor conditions.
5, instrument stability does not crash Watchdog program to ensure that the instrument will not work in a continuous crash.
6. Output current setting and check function The manual current source function can check and arbitrarily set the output current value to facilitate the detection of the recorder and the lower computer.
7. Software setting Current output mode The software selection is 0~10mA or 4~20mA output without the user having to dial any switch.
10. There are two types of calibration methods: manual input zero E0 and slope S to meet the customer's use in various situations.
1.4 Excellent Network Function The series meter retains the traditional isolated current output function. With the RS485 communication interface, the meter can be easily connected to the computer for monitoring and communication. With two pairs of twisted pairs, up to 254 tables can be directly connected to the computer to form a monitoring network to realize multi-variable remote transmission (within 10 km) of digital transmission and instrument remote control and remote operation.
Chapter II Fluoride Ion Specifications 1. Measurement Range: Fluoride Ion Concentration 0.2 ug/L to 2300 mg/L
Temperature 0～99.9°C
2, resolution: fluoride concentration 0.1ug/L
Temperature 0.1°C
3, automatic temperature compensation range: 0 ~ 99.9 °C, 25 °C as the benchmark 4, accuracy: ± 2.5% of reading, ± 0.3 °C
5, measured water samples: 0 ~ 45 °C, <0.1MPa
6, electronic unit automatic temperature compensation error: ± 1.5%
7. Electronic unit repeatability error: ±2.5% of reading
8, stability: ± 1.5% / 24h
9, response speed: 32 seconds @ 25 °C, 50 seconds @ 15 °C
10, clock accuracy: ± 1 minute / month 11, galvanically isolated output: 4 ~ 20mA (load <750Ω)
12, the output current error: ≤ ± 1% FS
13. Data storage quantity: 1 month (1/5 minutes)
14, high and low alarm relay: AC220V, 3A
15, RS485 communication interface (optional) with "√" indicate the output mode 16, power supply: AC220V ± 22V, 50Hz ± 1Hz
17, protection, etc.: IP65
18, external dimensions: 146 (long) × 146 (width) × 200 (deep) mm
Opening size: 138×138mm
19, weight: 1.0kg
20, working conditions: ambient temperature 0 ~ 60 °C, relative humidity <85%
Note: The temperature corresponding to 4 ~ 20mA current output is optional, must be specified when ordering. If not specified, the output signal is the current output of the measured value of fluoride ion.
Chapter 3 Selection and Maintenance of Fluoride Ionization 3.1 Selection of Electricity The use of relatively insoluble inorganic salts in solid-state electrical films. Solid-state electricity exists in similar and heterogeneous ways. Both types form a potential on the membrane due to the ion exchange process. Such electricity includes silver/sulfide, lead, copper, fluoride, thiofluoride, chloride, and fluoride ion selective electricity.
The accuracy and stability of electricity is a key factor in determining the quality of ion meters. Especially low-conductivity water quality requires more electricity. If you use ordinary electricity to measure, the stability is poor, and the service life is short and cannot meet the requirements.
Ion-selective electricity (ISEs) is an electrochemical sensor based on a sensitive membrane, which is the element that enables the selective response of electricity to specific ions.
According to the different materials of the membrane, ion selective electricity can be divided into 4 types:
• Glass film (such as Na+ or)
Solid film (eg Pb2+)
• Polymer film (eg K+)
• Gas permeable membrane (eg CO2)
When the electricity is placed in the solution, a potential difference forms on the membrane. When the concentration of the ion to be measured in the sample changes, the change in the potential difference can be detected using ion-selective electricity and internal or external reference electrodes. In principle, the entire setup can be described as follows:
The relationship between the measured potential E and the ion activity ai in the sample can be expressed in the Nernst mathematical manner as follows:
E=E. +slope.loga
The slope is equal to 2.3RT/ZiF, where R is the gas constant, 8.314JK-1mol-1
T is the temperature K
F is Faraday equivalent, 9.6487×104 Cmol-1
Zi is the charge of the measured ion. The slope is 59.16 mV/Zi at 25oC. If the measured ion is a monovalent ion such as potassium ion (Zi = +1), a potential change of 59.16 mV can be observed at 25oC when a decimal change occurs in the concentration. Similarly, a potential change of 59.16 mV/2=29.58 mV can be observed at 25oC for a divalent ion such as calcium ion (Zi=+2).
Eo is the constant potential difference when each ion is selectively charged in combination with a specific reference. Ai is the ion activity, but only in the more diluted solution and the ion concentration is equal. The activity of ions depends on the ionic strength in the sample solution determined by the content of the ions.
The concentration of the measured ions will be linearly offset at both the high and low ends, and this offset determines the limits of the high and low ends of the measurement. Ionization can accurately measure a sample solution with a concentration of 10-6M. The high linearity (usually higher than 0.1M) linear offset is due to the action of oppositely charged ions.
???7~??|Grounding: Eliminating ground loop interference.
1.2 Convenient Chinese menu operation 1. Chinese liquid crystal display, Chinese operation menu, Chinese note: using the menu structure, similar to the microcomputer operation, the operation is simple, the operation steps throughout the Chinese tips, can be done without instructions, you can easily complete.
2. Simultaneous display of multiple parameters: Displays the concentration value, temperature, time, and status on the same screen.
1.3 Abundant practical functions 1. Notepad function The notepad records the operating conditions of the instrument and the time when the alarm occurred. It is easy to manage.
2. Each calibration mode, time, and result of the monitoring electrical function are recorded to facilitate the query and analysis of electrical variation.
3. The digital clock function provides a time reference for various functions.
Chapter IV Installation of Fluoride Ion Instrument 4.1 Unpacking Industry On-line Fluoride Ion Concentration Meter consists of four parts: secondary meter, fluoride ion battery, measuring cell and connecting cable.
After unpacking, please check the quantity, specifications and accessories of the instrument according to the packing list, including the following parts:
1. If the fluoride ion concentration meter secondary table 2, fluoride ion branch 3, power cord root 4, manual book 5, certificate card are damaged, the quantity is wrong or the specifications do not match, please contact the company or the distributor.
4.2 Size and Installation of Secondary Meter The meter can be installed in the monitoring room away from the site, or it can be installed on site with the measuring tank. The required connection leads from the terminal behind the secondary table.
2, high reliability: components integrated into the block circuit board, there is no complicated function switch and adjustment knob.
3, strong anti-interference ability: the use of new devices, current output using optocoupler isolation technology, anti-interference ability to achieve remote transmission. Has good electromagnetic compatibility.
4, waterproof and dustproof design: protection and other IP65, suitable for outdoor use.
5, automatic timing calibration: to ensure that the instrument measurement stability and reliability.
6, RS485 communication interface: can be easily connected to the computer for monitoring and communications.
7. Solution grounding: Eliminate ground loop interference.
1.2 Convenient Chinese menu operation 1. Chinese liquid crystal display, Chinese operation menu, Chinese note: using the menu structure, similar to the microcomputer operation, the operation is simple, the operation steps throughout the Chinese tips, can be done without instructions, you can easily complete.
2. Simultaneous display of multiple parameters: Displays the concentration value, temperature, time, and status on the same screen.
1.3 Abundant practical functions 1. Notepad function The notepad records the operating conditions of the instrument and the time when the alarm occurred. It is easy to manage.
2. Each calibration mode, time, and result of the monitoring electrical function are recorded to facilitate the query and analysis of electrical variation.
3. The digital clock function provides a time reference for various functions.
4. The excellent display mode uses a 192×64 dot matrix graphic LCD display with backlight to achieve graphic and Chinese display. Adjustable uniform background light, clear observation in dark outdoor conditions.
5, instrument stability does not crash Watchdog program to ensure that the instrument will not work in a continuous crash.
6. Output current setting and check function The manual current source function can check and arbitrarily set the output current value to facilitate the detection of the recorder and the lower computer.
7. Software setting Current output mode The software selection is 0~10mA or 4~20mA output without the user having to dial any switch.
10. There are two types of calibration methods: manual input zero E0 and slope S to meet the customer's use in various situations.
1.4 Excellent Network Function The series meter retains the traditional isolated current output function. With the RS485 communication interface, the meter can be easily connected to the computer for monitoring and communication. With two pairs of twisted pairs, up to 254 tables can be directly connected to the computer to form a monitoring network to realize multi-variable remote transmission (within 10 km) of digital transmission and instrument remote control and remote operation.
Chapter II Fluoride Ion Specifications 1. Measurement Range: Fluoride Ion Concentration 0.2 ug/L to 2300 mg/L
Temperature 0～99.9°C
2, resolution: fluoride concentration 0.1ug/L
Temperature 0.1°C
3, automatic temperature compensation range: 0 ~ 99.9 °C, 25 °C as the benchmark 4, accuracy: ± 2.5% of reading, ± 0.3 °C
5, measured water samples: 0 ~ 45 °C, <0.1MPa
6, electronic unit automatic temperature compensation error: ± 1.5%
7. Electronic unit repeatability error: ±2.5% of reading
8, stability: ± 1.5% / 24h
9, response speed: 32 seconds @ 25 °C, 50 seconds @ 15 °C
10, clock accuracy: ± 1 minute / month 11, galvanically isolated output: 4 ~ 20mA (load <750Ω)
12, the output current error: ≤ ± 1% FS
13. Data storage quantity: 1 month (1/5 minutes)
14, high and low alarm relay: AC220V, 3A
15, RS485 communication interface (optional) with "√" indicate the output mode 16, power supply: AC220V ± 22V, 50Hz ± 1Hz
17, protection, etc.: IP65
18, external dimensions: 146 (long) × 146 (width) × 200 (deep) mm
Opening size: 138×138mm
19, weight: 1.0kg
20, working conditions: ambient temperature 0 ~ 60 °C, relative humidity <85%
Note: The temperature corresponding to 4 ~ 20mA current output is optional, must be specified when ordering. If not specified, the output signal is the current output of the measured value of fluoride ion.
Chapter 3 Selection and Maintenance of Fluoride Ionization 3.1 Selection of Electricity The use of relatively insoluble inorganic salts in solid-state electrical films. Solid-state electricity exists in similar and heterogeneous ways. Both types form a potential on the membrane due to the ion exchange process. Such electricity includes silver/sulfide, lead, copper, fluoride, thiofluoride, chloride, and fluoride ion selective electricity.
The accuracy and stability of electricity is a key factor in determining the quality of ion meters. Especially low-conductivity water quality requires more electricity. If you use ordinary electricity to measure, the stability is poor, and the service life is short and cannot meet the requirements.
Ion-selective electricity (ISEs) is an electrochemical sensor based on a sensitive membrane, which is the element that enables the selective response of electricity to specific ions.
According to the different materials of the membrane, ion selective electricity can be divided into 4 types:
• Glass film (such as Na+ or)
Solid film (eg Pb2+)
• Polymer film (eg K+)
• Gas permeable membrane (eg CO2)
When the electricity is placed in the solution, a potential difference forms on the membrane. When the concentration of the ion to be measured in the sample changes, the change in the potential difference can be detected using ion-selective electricity and internal or external reference electrodes. In principle, the entire setup can be described as follows:
The relationship between the measured potential E and the ion activity ai in the sample can be expressed in the Nernst mathematical manner as follows:
E=E. +slope.loga
The slope is equal to 2.3RT/ZiF, where R is the gas constant, 8.314JK-1mol-1
T is the temperature K
F is Faraday equivalent, 9.6487×104 Cmol-1
Zi is the charge of the measured ion. The slope is 59.16 mV/Zi at 25oC. If the measured ion is a monovalent ion such as potassium ion (Zi = +1), a potential change of 59.16 mV can be observed at 25oC when a decimal change occurs in the concentration. Similarly, a potential change of 59.16 mV/2=29.58 mV can be observed at 25oC for a divalent ion such as calcium ion (Zi=+2).
Eo is the constant potential difference when each ion is selectively charged in combination with a specific reference. Ai is the ion activity, but only in the more diluted solution and the ion concentration is equal. The activity of ions depends on the ionic strength in the sample solution determined by the content of the ions.
The concentration of the measured ions will be linearly offset at both the high and low ends, and this offset determines the limits of the high and low ends of the measurement. Ionization can accurately measure a sample solution with a concentration of 10-6M. The high linearity (usually higher than 0.1M) linear offset is due to the action of oppositely charged ions.
???7~??|Grounding: Eliminating ground loop interference.
1.2 Convenient Chinese menu operation 1. Chinese liquid crystal display, Chinese operation menu, Chinese note: using the menu structure, similar to the microcomputer operation, the operation is simple, the operation steps throughout the Chinese tips, can be done without instructions, you can easily complete.
2. Simultaneous display of multiple parameters: Displays the concentration value, temperature, time, and status on the same screen.
1.3 Abundant practical functions 1. Notepad function The notepad records the operating conditions of the instrument and the time when the alarm occurred. It is easy to manage.
2. Each calibration mode, time, and result of the monitoring electrical function are recorded to facilitate the query and analysis of electrical variation.
3. The digital clock function provides a time reference for various functions.
Chapter IV Installation of Fluoride Ion Instrument 4.1 Unpacking Industry On-line Fluoride Ion Concentration Meter consists of four parts: secondary meter, fluoride ion battery, measuring cell and connecting cable.
After unpacking, please check the quantity, specifications and accessories of the instrument according to the packing list, including the following parts:
1. If the fluoride ion concentration meter secondary table 2, fluoride ion branch 3, power cord root 4, manual book 5, certificate card are damaged, the quantity is wrong or the specifications do not match, please contact the company or the distributor.
4.2 Size and Installation of Secondary Meter The meter can be installed in the monitoring room away from the site, or it can be installed on site with the measuring tank. The required connection leads from the terminal behind the secondary table.
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