General arithmetic/signal processor unit with two inputs and two outputs with flexible input signal choices. Mains and DC powered options.

Also included is some analogue signal conditioning to be able to detect signal zero crossing and signal shifting so that periodic signals can be analysed on a cycle by cycle basis as fast as possible. Applications using these features include Peak/Valley Processing.

The unit is designed to be able to have one or two isolated inputs which can be from mV up to 250 VAC or current from mA to 10 A. The plug-in PCB part can be modified for special inputs (up to four terminals) such as a loadcell or other types of sensors.

Provision is made for isolated Modbus communications. An optional USB interface for configuration and communications.

Specifications:

• Standard inputs (DIP switch selectable): 
• Current: 4-20 mA, 0-20 mA, (options up to 0-15A DC).
• Voltage: 0-100 mV, 0-1 V, 0-10 V, 0-100 V, ±1 V, ±10 V, ±100 V.
• Loop powered inputs – from transducer (loop power 15V @ 22mA) - internal jumper selection.
• Standard outputs (DIP switch selectable): 4-20 mA, 0-20 mA, 0-5 V, 0-10 V, ±10 V, ±5 V.
• One or two inputs, one or two outputs.
• 24 VDC supply internal for loop powered transmitter inputs.
• Isolation >500 V DC – six-way isolation between input, all outputs, auxiliary power supply and communications (if installed).
• Response time approximately <0.1 Sec (depending upon the processing time required).
• Input signal status using single LED to indicate input “normal”, high or low input levels.
• Trimpot adjustment of outputs – zero and span which can be locked using DIP switch. Normal and wide trimpot adjustments selectable using DIP switch.
• Power-On (and Status) LED indication.
• Smart input and output calibration (re-ranging) using push button switch and LEDs.
• Linearity better than 0.1% of full scale, basic 12 bit accuracy (0.05%).
• Auxiliary supplies 90-260 VAC.
• Operating temperature -10°C to 70°C.
• Input impedance > 100 kΩ for voltage input versions, 50 Ω for current inputs.
• Maximum output load resistance 390 Ω for current outputs.
• Up to four plug-in screw terminal connections for wire diameter 2.5 mm².
• DIN rail mounting with flame proof, high quality enclosure - 22.5 x 100 x 113 mm (width x length top to bottom x height off DIN rail).
• Future options which are already provided for are: one relay output for alarms, PC configuration, Modbus communications.

Please contact us with your specific requirements to see how we can adapt this instrument to suit your application. Email Mike....