An overview of the

Intelligent flow quantitative controller (hereinafter referred to as the controller) main features:

Suitable for all kinds of liquid medium flow display, calculation, quantitative control function;

Input a variety of flow sensor signals (such as vortex street, turbine, electromagnetic, Roots, elliptic gear, double rotor, orifice plate, V-cone, Amoba, mass flow and other flowmeters);

Flow input channel: can receive frequency signals and a variety of analog current signals;

Temperature input channel: can receive a variety of analog current signals;

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

Fault tolerance function: when the temperature/density compensation measurement signal is abnormal, the corresponding manual set value is used for compensation operation;

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

Meter clock and timing automatic meter reading function, printing function, provide convenience for measurement management;

Rich self-test and self-diagnosis functions make the meter easier to use and maintain;

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

There is no potentiometer, code switch and other adjustable devices inside the instrument, so as to improve the seismic resistance, stability and reliability of the instrument;

Communication function: data communication can be carried out with the upper computer through a variety of communication methods to form an energy metering network system:

RS - 485.

RS - 232.

Main technical index of instrument

The input signal

Mold fitting:

Thermocouple: standard thermocouple -- K, E, B, J, N, T, S;

Resistance: standard thermal resistance -- Pt100;

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

Pulse impact:

Wave shape: rectangle, sine wave and triangle wave;

Amplitude: greater than 4V;

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

The output signal

Analog output:

DC 0 ~ 10mA (load resistance ≤750 ω);

DC 4 ~ 20mA (load resistance ≤500 ω);

Switching output

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

The communication output

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

Baud rate -- 600, 1200, 2400, 480, 9600Kbps, meter internal setting.

Feed output

DC24V, load ≤100mA;

DC12V, load ≤200mA

features

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

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

Measuring range: -999999 ~ 999999 words (instantaneous value, compensation value);

0 to 99999999.9999 words (cumulative value)

Resolution: ±1 word

Display mode

· Large backlit screen 128×64 dot matrix LCD graphic display;

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

·0 ~ 999999 instantaneous flow

·0 to 99999999.9999 Cumulative value

·-9999 ~ 9999 temperature compensation

·-99999 to 999999 Traffic (differential pressure, frequency)