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
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