Online hardness tester model: BDZ3CA3201
The transmitter is based on a single-chip microcomputer to achieve analog test, data processing, and output signal. Self-contained analysis system. The work is very reliable. Applicable to environmental protection, civil water, industrial water and treatment, boiler water quality, sewage discharge testing, production process and other places water quality testing, including mining industry, steel, smelting, coking, gas, oil field, petrochemical, chemical synthesis, pesticides, medicine, Leather and paper, food and beverage, textile printing and dyeing and other industries.
Features
* Output 1 channel 0-2.5 / 5V, 0 / 4-20mA linear standard signal. It can be directly used for display and recorder, and can be enhanced as PID closed-loop control.
* Alarm limit can be set, sound and light alarm, switch output 1 0 / 5V signal, and 1 photoelectric isolation thyristor trigger (400V, current 1A)
* CPT1 and other models can be equipped with LCD display data on site;
* Please refer to "Introduction to BD4 / 5 Smart Transmitter / Measurement and Control" Ref: BD4IntC
Features:
* Automatic temperature software compensation (ATC)
* Test data processing provides calculation and correction methods based on electrochemical theory, including NERNST, NERNST + Debye-HucKel + Henderson. The user chooses to activate.
* The calibration function allows users to choose the standard addition method (SA), the two-point standard addition method (DKA), and the three-point standard addition method (3KA);
* Single sample calibration method (SS), double sample calibration method (TKS), three sample calibration method (3KS)
* After operation, single point zero adjustment can be irregular.
performance
* Circuit test accuracy 0.05% FS
* The test type and accuracy are determined by the equipped electrodes. The general electrode theoretical accuracy is 1.5%. Due to drift, the interference of water pollution components and other factors, the relative accuracy of actual normal use can only reach 1.5-10%.
* External power supply DC 12-24V, power: <1.40 W, basic test power consumption <500mW.
* Waterproof design: CPT1: NEMA 4x / IP66; CPT2: NEMA6 / 6p (IP67)
maintain:
* It is recommended to clean the electrode once a week, regularly replace the electrode membrane or salt box for 1-6 months and replace the electrode for 1-2 years. It depends on the selected electrode and usage.
* When the water quality is harsh or the dynamic range is large, two-point calibration is performed regularly. When necessary, use more than two concentration samples to calibrate the basic calibration table to overcome the effects of electrode drift, aging, and scaling. The use of this technology can multiply the service life of the electrode.
* After electrode replacement, it is best to perform DKA calibration and at least zero calibration. Easy to operate, it only takes a few minutes.
Electrode Selection
Industrial / replaceable electrodes are generally used. Flat-head solid electrodes have less maintenance for samples with higher solid content. You can also choose round bubble electrode, the advantage is that the reflection time is faster.
The reference electrode uses AgCl solid state when the situation permits, this type is generally a composite electrode. But the electrode configuration is mainly determined according to the test technical requirements. When single electrode and reference electrode are used, CPT4 auxiliary parts are required.
During the calibration and "zero adjustment" operation, the instrument will check the performance of the electrode. If the electrode resolution is not enough, the electrode is considered to be invalid and prompts to replace the electrode.
Main technical parameter measurement range: 0.2-40000ppm
Repeat accuracy: 10% R
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