Four-channel meter I4

Four-channel meter I4 is designed to measure and control from 1 to 4 physical quantities and display the measured values on the built-in digital indicator.
I4 has four independent measuring channels, alarm output (optosimistor (OS), opto-switch (OK) or relay (P)), RS-485 interface with ModBus RTU protocol. The meter has two versions in terms of supply voltage: AC voltage 90..240V (IPI) or DC voltage source 12..24V (IP24).

Appointment

I4 is designed to control temperature, pressure, humidity, flow rate or other physical quantity in several zones at the same time (up to 4) and alarm signaling of any of the monitored parameters going beyond the specified limits (one emergency exit).
I4 is used as an alarm device in ovens, drying chambers in the food, metallurgical and other industries.

General functions and operating modes

• measurement of temperature (or other physical quantities) of objects using resistance thermocouples (temperature sensors) ТСМ (50М, 100М) and ТСП (50П, 100П, Pt100, Pt500, Pt1000), thermocouples (ТХК, ТХА, ТЖК, etc.), sensors with unified output signal of current АТ (0..5 mA, 0..20 mA, 4..20 mA) and voltage АН (0..1 V, 0..5 V, 0..10 V);

• formation of the "Emergency" signal (with the possibility of issuing a control signal to the output stage) when the measured physical quantity is outside the specified alarm range, as well as when the input sensor is open or short-circuited;

• the function of calculating and indicating the square root of the measured value (for example, for measuring the instantaneous flow rate from the sensors АН and АТ);

• scaling of the scale of measurements;

• light indication of operating modes;

• software change of parameters of transformation characteristics (slope, offset);

• digital filtering of measurements (filter depth - up to 10 measurement periods);

• change of indication period of measured values;

• digital calibration of input channels;

• password protection of parameters;

• built-in constant voltage source (24V, 100mA) for powering active sensors or for connecting an alarm relay;

• RS-485 ModBus RTU interface for recording measured values on a PC or for working with a PLC.