flow totalizer - gn

flow totalers

SPECIFICATIONS

INPUT SIGNAL

Analog input: Resistance PT100

Voltage 05V,15V or mV

Current 010mA,420mA or 020mA

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)....