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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 1. Measuring range: 0 ~ 200ug / l, 0 ~ 2000ug / l Optional 2. Accuracy: ± 1% FS
3 reproducibility: ± 1% FS
4. Stability: Drift ≤ ± 1% FS/24 hours 5. Response time: Initial response 12 minutes 6. Sampling period: 10 minutes / channel 7. Water sample conditions: Flow rate:> 100ml/min
Temperature: 10~45°C
Pressure: 10kPa~100kPa
1. Environmental conditions: Temperature: 5~45°C
Humidity: <85% RH
2. Reagent consumption: about 3 liters per month for each of the three reagents 3. Current output: 0 to 20 mA (any setting in this range, independent output for each channel of the multi-channel instrument)
4 alarm output: relay normally open contact (220V/1A)
5. Power Supply: AC220V±10%50HZ
6. Power consumption: ≈50VA
7. Overall dimensions: 720mm (height) × 460mm (width) × 300mm (deep)
8. 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. Analytical flow path measurement using quantitative injection, display reaction, colorimetric analysis 3. Electrical principle The electrical system of the instrument consists of two main parts.
Detection and driving part: driving the measuring instrument's various execution components (solenoid valve, air pump) and light source; and digitally processing the voltage signal of the photocell in the detector to realize the automatic operation of the instrument and signal conversion from electricity to light to electricity. And the digitization of electrical signals. This part consists of a detector, A/D microcontroller board, solenoid valve, and air pump.
Display output part: store and display the detected data; output switch (road alarm output) and analog (six current output 0～22mA) signals, suitable for controlling various automation equipments; calibrate the instrument and test by keyboard Instrument and query history measurement data. This part consists of a display, a keyboard, a host (CPU), and an output module.
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);
GSGG-5089 Online Silicate Monitor Operation Manual, Overview: