digital flow indicator( total flow indicator; flow indicator )

Detailed Product Description

Digital flow indicator

INPUT SIGNALS

     Analog input: Resistance PT100

                 Voltage 05V,15V or mV

                 Current 010mA,420mA or 020mA

                 ThermocoupleK,E

     Pulse input: Waverectangular, sine or triangle wave

                 Amplitudemore than 4V(or specified by user).

                 Range05KHz.

     Switch input: Start, stop, reset

                  Anplitudeinput isolated by photoelectricity more than 4V

                                    (or specified by user)

OUTPUT SIGNALS

       Analog input:010mA(≤750Ω)    420Ma(≤500Ω)

                    05  V(≤250Ω)    15  V(≤250Ω)

       Switch input: Relay controlling output (AC220V/3A,DC24V/5A,resistance load)

                   SCR(silicon controlled)output 400V/0.5A

                   SCR(solid relay)output 69V/50mA

                   Feed output:  DC24V/30mA..

      Communicating: bi-wiring, trio-wiring or quad-wiring systems, baud rate is changeable.

PRECISION

      Display precision for measuring:0.2%FS±1 digit or 5%FS±1 digit

      Transforming precision for frequency:±1pulse (LMS),better than 0.2%

DISPLAY METHOD

      09999 display transient flow measured value

      09999999999 display accumulated flow value

      19999999 display measured value of temperature compensation

      19999999 display measured value of pressure compensation

      19999999 display measured value of flow(differential pressure of frequency)

      display current time

      display working state of luminescent tube(high-light LED digital display or LED Chinese digital display with backlight)

CONTROLLING METHOD    ON/OFF with back-difference

PRINT CONTROLLING     Directly connect with various types of serial micro-printer.

                      Communicating method is RS-232.

PRINT PRECISION       The same as the measuring precision of instrument.

ALARMING METHOD

Can select the alarm output of relay high limit and low limit with LED indicating alarm.

QUANTITATIVE CONTROLLING METHOD

Can select relay controlling with LED indicating output when the getting the set flow value.

Can select relay controlling quantitative flow process with LED indicating output.

ALARM PRECISION   ±1digit

COMMUNICATING METHOD

Bi-directional serial communicating, such as RS-422,RS-485 and so on.

The baud rate(3009600bps)can be arbitrarily set by setting internal parameter.

The system adopts principal and subordinate communicating method as to realize communicating of multi GZ instruments with microcomputers.

SETTING METHOD

Faceplate key touching setting digits.Keep set values permanently if power is broken.

Lock set parameters by password.

PROTECTING METHOD

Auto reset by programming if the voltage is too low.

Auto reset by programming if the operation is abnormal (Watch Dog)

Since power is broken keep the accumulated flow value for more than two years and keep set parameters permanently.

USING ENVIRONMENT

Ambient temperature:050

Relative humidity:≤85%RH

Power supply:   AC  220V+10-15%(50Hz±2Hz)

AC  90260Vswitch power

DC  24V±2Vswitch power

Get rid of strong corrosive gas

POWER CONSUMPTION:

·≤ 5W(AC 220V power supply)

·≤ 4W(AC 90260V switch power supply)

·≤ 4W(DC 24V power supply)

STRUCTURE    Standard Inserting Type

WEIGHT       500g(AC 220V power supply)

             300g(Switching power supply)......