A SCADA device - perfect to build a flow meter system
 


SCADA Devices for Analog and Digital Signals

SCADA Devices for Analog and Digital Signals

GDA8M1 is a data acquisition module for voltage and current analog signals but also for digital signals and frequencies. The module powers all inputs, conditions their signals and measures them with very high accuracy. The module accumulates a total number of pulses for each digital input. Those totals can be cleared at any time independently or all at exactly the same time. GDA8M1 provides the difference of any combination of total pulses, the ratio of any two frequencies, the difference of any two frequencies and other information. Each pulse input can work synchronously with the stop watch being independently programmable from other inputs. All totals can be read independently or at exactly the same time. GDA8M1 has a RS485 MODBUS RTU port and can be read by a MODBUS master many times a second. The port represents 1/8 of a standard load which allows up to 256 devices to be connected to the same 2 wires of the RS485 network. With its very high accuracy and many features GDA8M1 can be an excellent addition to any control loop, PLC or a SCADA system.

Features
  • POWERS AND MEASURES THE SIGNAL OF TWO LOOP POWER 4-20 mA SENSORS
  • POWERS AND MEASURES THE SIGNAL OF THREE ANALOG SENSORS, UNIVERSAL INPUT 0-20mA, 4-20mA, 0-5V OR 0-10V, PROGRAMMABLE
  • POWERS AND MEASURES THREE PULSE/FREQUENCY SENSORS, UP TO 10 kHz, UNIVERSAL INPUT OPEN DRAIN / COLLECTOR, NPN, PNP, REED SWITCH, DRY CONTACT, WAVES, LOGICAL SIGNALS, COILS
  • NO NEED OF PREAMPLIFIERS FOR THE COILS
  • PROVIDES TOTAL PULSES FOR EACH PULSE INPUT, THE DIFFERENCE OF THE TOTALS, FREQUENCY, FREQUENCY RATIO AND FREQUENCY DIFFERENCE
  • ALL ANALOG INPUTS ARE MEASURED 100 TIMES PER SECOND
  • TYPICAL ERROR ON ALL ANALOG INPUTS IS 0.01% FS
  • ALL INPUTS ARE HIGHLY PROTECTED
  • WORKS WITH 7-40 VDC POWER, REVERSE POLARITY AND SURGE PROTECTED
  • STOP WATCH WITH ERROR LOWER THAN 1 ms
  • SYNCHRONOUS WORK OF ALL PULSE INPUTS AND THE STOP WATCH, INDEPENDENTLY PROGRAMMABLE FOR EACH INPUT
  • VERY HIGH PROTECTION ON THE RS485 PORT
  • BUILT-IN TERMINATION RESISTOR, JUMPER SELECTABLE
  • MODBUS RTU COMPLIANT
  • HIGH EFFICIENCY, LOW POWER CONSUMPTION
  • SMALL SIZE


Our GpH140 series transmitters offer up to two pH inputs, up to two mV inputs that can be programmed to also accept 11 types of thermocouples, one Pt1000 RTD input and one 4-20 mA input. All with typical error of 0.03% FS and a great flexibility. Always available is also the built-in cold junction compensation with an absolute error of 0.2 oC.


pH + dissolved oxygen transmitter

GpH140-11 has two inputs with an extremely high impedance, specially designed to measure pH and / or REDOX / ORP.

GpH140-12 has one input for pH / REDOX / ORP and one for mV / thermocouples.

GpH140-22 has two inputs for mV / thermocouples.

All of them have as a standard one Pt1000 RTD input, the built-in cold junction compensation and one 4-20 mA two wire loop power input.

 
A SCADA device - perfect to build a flow meter system