GSGG-5089
Industrial Silicate Monitor Overview:
GSGG-5089 Online Silicate Monitor is a high-precision on-line automatic instrument with functions of automatic chemical reaction, optical detection, graphic display, control output and data storage. The instrument uses unique air stirring and The photoelectric detection technology has excellent characteristics such as fast chemical reaction speed and high measurement accuracy; the instrument uses a color liquid crystal display to display measurement results, system information, and full Chinese menu operations with rich colors, texts, charts, and curves. Interface; full integration of humanized design concept and high technology, highlights the superiority of the instrument and product competitiveness.
Second, characteristics:
1. Low detection limit is very suitable for silicon content detection and control of power plant feed water, saturated steam and superheated steam;
2. An on-line silicon watch that really uses a monochromatic cold light source, the light source has a long service life;
3. The instrument has a history curve recording function and can store 30 days of data;
4. The instrument has automatic calibration function, and the cycle can be set arbitrarily;
5. Support the measurement of multiple water samples (optional 1 - 6 channels);
6. In addition to the addition of reagents and standards, the instrument has no workload and is truly maintenance-free.
Third, the technical parameters of the measurement range: 0 ~ 200ug / l, 0 ~ 2000ug / l optional precision: ± 1% FS
Reproducibility: ±1%FS
Stability: Drift ≤±1% FS/24 hours Response time: Initial response 12 minutes Sampling period: 10 minutes/channel Water condition: Flow rate: >100 ml/min
Temperature: 10~45°C
Pressure: 10kPa~100kPa
Environmental conditions: Temperature: 5~45°C
Humidity: <85% RH
Reagent consumption: Three reagents each about 3 liters/month Current output: 0~20mA (any setting in this range, independent output of each channel of multichannel instrument)
Alarm output: relay normally open contact (220V/1A)
Power supply: AC220V±10%50HZ
Power consumption: ≈50VA
Overall dimensions: 720mm (height) × 460mm (width) × 300mm (deep)
Opening size: 665mm×405mm
Fourth, the instrument structure and working principle The chemical principle In the determination of acidity, silicate and molybdate react to form molybdenum yellow molybdate, and then use reducing agent to reduce to molybdenum blue, and then measured by spectrophotometry.
Phosphate also undergoes a similar reaction under this condition, which interferes with the measurement and masks the interference of phosphate ions by adding oxalic acid.
The large absorption of the above-mentioned chromogenic product is around 810 nm, and this instrument uses an 810 nm special refrigeration light source for measurement.
2. Analyze the flow path measurement process using quantitative injection, display reaction, colorimetric analysis, flow path as shown in the figure below.
Fifth, the instrument installation Installation requirements and precautions:
1 The location of the analytical instrument should be as close to the sampling point as possible, and the sample taken should be representative;
2 The measured water sample and ambient temperature should be between 5 and 45 °C, otherwise it will affect the chemical analysis process and affect the measurement accuracy;
3 Ensure that the water sample is free from impurities and dirt. If the water quality fails due to maintenance or other reasons, the water sample should be disconnected and the instrument must be stopped;
4 There should be no strong electromagnetic field and strong vibration source around the working environment where the instrument is installed;
5 The instrument should be installed in a dry, dust-free, non-corrosive gas environment;
2. Installation and fixing methods:
The instrument can be mounted on a variety of dashboards or mounting brackets. When mounted on the dial, open the hole as shown in the figure. The opening size is (665×405mm);
VI. Preparation of reagents and standard solutions Reagent preparation reagents must be formulated with silicone-free water to ensure the accuracy of the instrument measurement, the required chemicals (analysis of pure):
Ammonium molybdate: (NH4)6MO7O24·4H2O
Oxalic acid: C2H2O4·2H2O
Concentrated sulfuric acid: H2SO4
Ammonium Ferrous Sulfate: Fe(NH4)2·(SO4)2·6H2O
Preparation method:
1 Reagent 0 (R0):
Take 84ml of 98% concentrated sulfuric acid, slowly pour 800ml of silicon-free water, cool to room temperature, and then set the volume to 1L.
2 Reagent 1 (R1):
100 g of ammonium molybdate was weighed, dissolved in 800 ml of silicon-free water, and then set to 1 L.
3 Reagent 2 (R2):
80 g of oxalic acid was weighed and dissolved in 800 ml of silicon-free water, and then the volume was set to 1 L and loaded into the reagent tank R2.
4 Reagent 3 (R3):
First take 12ml of 98% concentrated sulfuric acid, slowly poured into 800ml silicon-free water, cooled to room temperature, and then weighed 12g of ferrous ammonium sulfate, dissolved in the above water, after the volume to 1L, into the reagent drum R3.
5 When using, mix R0 and R1 in a 1:1 ratio and put them into the reagent tank R1.
2. The preparation standard solution of the standard solution must be formulated with silicon-free water. The chemical used is (analytical):
Sodium Fluorosilicate (Na2SiF6) or Sodium Silicate (Na2SiO3.9H2O)
Preparation of 11000mg/L SiO2 stock solution:
Accurately weigh 3.130 g of sodium fluorosilicate (Na2SiF6) or 4.730 g of sodium silicate (Na2SiO3.9H2O), dissolve in a small amount of silicon-free water, and set the volume to 1L.
Preparation of 2100mg/L SiO2 working fluid:
A suitable amount of 1000 mg/L SiO2 stock solution was weighed and diluted 10 times with silicon-free water.
3 According to the measurement range, the user selects the target concentration 1 and target 2 and dilutes the working fluid with silicon-free water to the corresponding concentration.
Industrial Silicate Monitor Overview:
GSGG-5089 Online Silicate Monitor is a high-precision on-line automatic instrument with functions of automatic chemical reaction, optical detection, graphic display, control output and data storage. The instrument uses unique air stirring and The photoelectric detection technology has excellent characteristics such as fast chemical reaction speed and high measurement accuracy; the instrument uses a color liquid crystal display to display measurement results, system information, and full Chinese menu operations with rich colors, texts, charts, and curves. Interface; full integration of humanized design concept and high technology, highlights the superiority of the instrument and product competitiveness.
Second, characteristics:
1. Low detection limit is very suitable for silicon content detection and control of power plant feed water, saturated steam and superheated steam;
2. An on-line silicon watch that really uses a monochromatic cold light source, the light source has a long service life;
3. The instrument has a history curve recording function and can store 30 days of data;
4. The instrument has automatic calibration function, and the cycle can be set arbitrarily;
5. Support the measurement of multiple water samples (optional 1 - 6 channels);
6. In addition to the addition of reagents and standards, the instrument has no workload and is truly maintenance-free.
Third, the technical parameters of the measurement range: 0 ~ 200ug / l, 0 ~ 2000ug / l optional precision: ± 1% FS
Reproducibility: ±1%FS
Stability: Drift ≤±1% FS/24 hours Response time: Initial response 12 minutes Sampling period: 10 minutes/channel Water condition: Flow rate: >100 ml/min
Temperature: 10~45°C
Pressure: 10kPa~100kPa
Environmental conditions: Temperature: 5~45°C
Humidity: <85% RH
Reagent consumption: Three reagents each about 3 liters/month Current output: 0~20mA (any setting in this range, independent output of each channel of multichannel instrument)
Alarm output: relay normally open contact (220V/1A)
Power supply: AC220V±10%50HZ
Power consumption: ≈50VA
Overall dimensions: 720mm (height) × 460mm (width) × 300mm (deep)
Opening size: 665mm×405mm
Fourth, the instrument structure and working principle The chemical principle In the determination of acidity, silicate and molybdate react to form molybdenum yellow molybdate, and then use reducing agent to reduce to molybdenum blue, and then measured by spectrophotometry.
Phosphate also undergoes a similar reaction under this condition, which interferes with the measurement and masks the interference of phosphate ions by adding oxalic acid.
The large absorption of the above-mentioned chromogenic product is around 810 nm, and this instrument uses an 810 nm special refrigeration light source for measurement.
2. Analyze the flow path measurement process using quantitative injection, display reaction, colorimetric analysis, flow path as shown in the figure below.
Fifth, the instrument installation Installation requirements and precautions:
1 The location of the analytical instrument should be as close to the sampling point as possible, and the sample taken should be representative;
2 The measured water sample and ambient temperature should be between 5 and 45 °C, otherwise it will affect the chemical analysis process and affect the measurement accuracy;
3 Ensure that the water sample is free from impurities and dirt. If the water quality fails due to maintenance or other reasons, the water sample should be disconnected and the instrument must be stopped;
4 There should be no strong electromagnetic field and strong vibration source around the working environment where the instrument is installed;
5 The instrument should be installed in a dry, dust-free, non-corrosive gas environment;
2. Installation and fixing methods:
The instrument can be mounted on a variety of dashboards or mounting brackets. When mounted on the dial, open the hole as shown in the figure. The opening size is (665×405mm);
VI. Preparation of reagents and standard solutions Reagent preparation reagents must be formulated with silicone-free water to ensure the accuracy of the instrument measurement, the required chemicals (analysis of pure):
Ammonium molybdate: (NH4)6MO7O24·4H2O
Oxalic acid: C2H2O4·2H2O
Concentrated sulfuric acid: H2SO4
Ammonium Ferrous Sulfate: Fe(NH4)2·(SO4)2·6H2O
Preparation method:
1 Reagent 0 (R0):
Take 84ml of 98% concentrated sulfuric acid, slowly pour 800ml of silicon-free water, cool to room temperature, and then set the volume to 1L.
2 Reagent 1 (R1):
100 g of ammonium molybdate was weighed, dissolved in 800 ml of silicon-free water, and then set to 1 L.
3 Reagent 2 (R2):
80 g of oxalic acid was weighed and dissolved in 800 ml of silicon-free water, and then the volume was set to 1 L and loaded into the reagent tank R2.
4 Reagent 3 (R3):
First take 12ml of 98% concentrated sulfuric acid, slowly poured into 800ml silicon-free water, cooled to room temperature, and then weighed 12g of ferrous ammonium sulfate, dissolved in the above water, after the volume to 1L, into the reagent drum R3.
5 When using, mix R0 and R1 in a 1:1 ratio and put them into the reagent tank R1.
2. The preparation standard solution of the standard solution must be formulated with silicon-free water. The chemical used is (analytical):
Sodium Fluorosilicate (Na2SiF6) or Sodium Silicate (Na2SiO3.9H2O)
Preparation of 11000mg/L SiO2 stock solution:
Accurately weigh 3.130 g of sodium fluorosilicate (Na2SiF6) or 4.730 g of sodium silicate (Na2SiO3.9H2O), dissolve in a small amount of silicon-free water, and set the volume to 1L.
Preparation of 2100mg/L SiO2 working fluid:
A suitable amount of 1000 mg/L SiO2 stock solution was weighed and diluted 10 times with silicon-free water.
3 According to the measurement range, the user selects the target concentration 1 and target 2 and dilutes the working fluid with silicon-free water to the corresponding concentration.
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XI'AN TAIMA BIOLOGICAL ENGINEERING CO.LTD , https://www.taimabio.com