SX-DD-1100The type of industrial conductivity instrument is the advantages of our company according to the needs of domestic users, drawing on the advantages of similar instruments in the country, internal and external, and adopting a new type of digital industrial conductivity instrument developed by advanced foreign technology. The instrument is beautiful, the structure is simple, the operation is convenient, the operation is clear, the display is strong, the function is strong, the stability is good, the reliability is high.20.00 ms/cmIt is widely suitable for online continuous monitoring of solution conductivity values in the fields of electronics, chemistry, pharmaceuticals, beverages, papermaking, electricity and other fields.
1、SX-DD-1100Type industrial conductivity instrumentCharacteristic
Ø 128×64The dot -matrix LCD display (or resistivity) and temperature, current, etc.
Ø Automatic conversion range.
Ø Automatic temperature compensation, when measured pure water, combines two temperature coefficients to achieve the best temperature compensation for the guidance rate of pure water and electricity; in non -pure water, the temperature compensation coefficient can be set arbitrarily, which can meet various different water to meet various different water. Sample measurement requirements.
Ø The advanced amplifier zero -position automatic software correction technology is used to compensate for the measuring value drift caused by various factors.
Ø The setting parameter has the function of power loss and does not require battery support.
Ø Provide all the way4-20mACurrent output.
Ø RS485Live bus, loading standardModbus RTUAgreement can remotely read measurement data and modify each parameter.
Ø Set up the upper and lower limit alarm points, and display the alarm prompt information on the LCD screen.
2、SX-DD-1100Type industrial conductivity instrumentThe main technical parameters
Ø Measuring range0-20mS/cm 0-200mS/cm 0-2000mS/cm 0-20.00ms/cm
Ø measurement accuracy Directive rate: ±1.0％FS±1Dig, Temperature: ±0.5℃;
Ø Stability: ±0.2％FS±1dig/24H；
Ø Automatic temperature compensation range:5-60℃;
Ø Create reading time: ≤30second;
Ø Isolation output signal:4-20mA (RL <500W)或RS485-MODBUScommunication;
Ø Alarm contact capacity: frequently open contactsAC220V/3A，DC24V/5A Alarm return difference: ±2% (Optional);
Ø Normal working conditions of the instrument: Environmental temperature:0-45℃, relative humidity: not greater than90%, Measured solution temperature:5-60℃, pressure: ≤0.3MPa
Ø Power supply:AC220V±22V 50Hz±1Hzpower:10W；
Ø Instrument shape size:144×144×148mm Hole Size:139×139mm。
3、SX-DD-1100Type industrial conductivity instrumentworking principle
Ø 由MCUThe sine wavega generated through the software on the conducting battery, the current flowing through the conductor battery is appropriately enlarged by the amplifier (the amplifier is automatically switched) and the voltage signal is converted to the voltage signal. Microprocessor samples and conducts temperature signals and conductivity signals, respectivelyA/DThe conversion, the measured solution was calculated by the microprocessor25The conductivity value when the benchmark temperature. The conductivity of the solution is affected by temperature,The change law of the general electrolyte solution isGt = g25 [1+α(T -25)],,inGT为tThe conductivity of the solution during ℃,G25为25The conductivity of the solution during ℃, α is the temperature compensation coefficient of the solution,tThe temperature of the solution. becauseGT和tTesting from the instrument, so just determine the temperature compensation coefficient α, the instrument can automatically calculateG25。
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