Intelligent quantitative control instrument
  • Intelligent quantitative control instrument

Intelligent quantitative control instrument

Input various flow sensor signals (such as vortex street, turbine, electromagnetic, Roots, elliptical gear, dual rotor, orifice plate, V-cone, Annubar, mass flow, and other flow meters);

summary

The main features of the intelligent flow quantitative controller (hereinafter referred to as the controller) are:

Suitable for flow display, accumulation, and quantitative control functions of various liquid media;

Input various flow sensor signals (such as vortex street, turbine, electromagnetic, Roots, elliptical gear, dual rotor, orifice plate, V-cone, Annubar, mass flow, and other flow meters);

Flow input channel: capable of receiving frequency signals and various analog current signals;

Temperature input channel: can receive various analog current signals;

Can provide transmitter+24V DC,+12V DC power supply with short-circuit protection function, simplify the system, and save investment;

Fault tolerance function: When the temperature/density compensation measurement signal is abnormal, use the corresponding manual set value for compensation calculation;

Flow resend function, output current signal of flow, update cycle of 1 second, to meet the needs of automatic control;

The instrument clock and timed automatic meter reading and printing functions provide convenience for measurement management;

Rich self inspection and self diagnosis functions make the instrument easier to use and maintain;

The three-level password setting can prevent unauthorized personnel from changing the set data;

There are no adjustable devices such as potentiometers or coding switches installed inside the instrument, thereby improving its shock resistance, stability, and reliability;

Communication function: It can communicate data with the upper computer through various communication methods to form an energy metering network system:

RS-485;

RS-232;

The main technical indicators of the instrument

Input signal

Analog quantity:

Thermocouple: Standard thermocouple - K E、B、J、N、T、S;

Resistance: Standard thermistor - Pt100;

Current: 0-10mA, 4-20mA - input impedance ≤ 250 Ω;

Pulse quantity:

Waveform: rectangular, sinusoidal, and triangular waves;

Amplitude: greater than 4V;

Frequency: 0-10KHz (or according to user requirements).

output signal

Analog output:

DC 0-10mA (load resistance ≤ 750 Ω);

DC 4-20mA (load resistance ≤ 500 Ω);

Switching output

Relay output - return differential, AC220V/3A; DC24V/6A (resistive load).

Communication output

Interface method - Standard serial communication interface: RS-232C, RS-485;

Baud rate -6001200240048009600Kbps, set internally in the instrument.

Feed output

DC24V, Load ≤ 100mA;

DC12V, Load ≤ 200mA

Characteristics

Measurement accuracy: ± 0.2% FS ± 1 word or ± 0.5% FS ± 1 word

Frequency conversion accuracy: ± 1 pulse (LMS) is generally better than 0.2%

Measurement range: -999999 to 999999 words (instantaneous value, compensation value);

0-99999999.9999 words (cumulative value)

Resolution: ± 1 word

Display method

·128 × 64 dot matrix LCD graphic display with backlight large screen;

·Historical cumulative flow rate, instantaneous flow rate, medium temperature, medium density, flow rate (differential pressure current, frequency) value, clock, alarm status;

·Instantaneous flow rate value from 0 to 999999

·Accumulated value from 0 to 99999999.9999

·-9999-9999 temperature compensation

·-Flow (differential pressure, frequency) values from 99999 to 999999