Two-channel large-size display AR751

Product Description

• control of temperature and other physical parameters (humidity, pressure, level, speed, etc.) processed into a standard electric signal (0/4÷20mA, 0÷10V, 0÷60mV, 0÷2,5kΩ)
• 2 universal measuring inputs (thermoresistance, thermocouple and analogue) with additional features:
  • mathematical (difference, sum and average of measurements from two inputs)
  • with measured minimum and maximum value saved in the memory
  • remote data display (via MODBUS-RTU, slave)

• real-time clock displayed alternately with measurements
• LED display: 4 digits, height 57 mm, 4 colours (red, orange, yellow, green)
• programmable display colours for measurement channels, clock, LED indicators and alarms
• 2 independent on/off alarm outputs (ON-OFF, heating, cooling, relative alarms, manual mode) with LED indication and a colour display
• BIN digital input for switching the operating mode: start/stop for outputs, manual/automatic mode for outputs, two-position switching of the set value (day/night) for alarms, display "Hold" feature for measurements, changing or stopping the switching of displayed channels, direct display of measured value inputs (for mathematical functions), etc.
• analogue output 0/4÷20mA or 0/2÷10V (alarm, retransmission)
• option of converting an input signal into a standard analogue output
• selecting control value outputs (input, difference, sum, average from measurements)
• manual mode (open control loop) available for binary and analogue outputs, setting the value of the output signal in the range of 0 ÷ 100%, option of auto-activation due to sensor failure
• built-in 24Vdc/50mA power supply adapter for supplying on-site transducers
• RS485 serial interface, galvanically isolated, MODBUS-RTU, slave
• compensation of line resistance for resistance sensors
• temperature compensation of thermocouple cold ends
• programmable display values (measurements, mathematical or remote functions), input types, indication ranges (for analogue inputs), alarm options, communication, access, display and other parameters
• option of protecting access to the configuration of parameters with user password
• methods for configuring parameters:
  • via membrane keyboard (IP65), located on the front panel of the device       
  • via RS485 or PRG (programmer AR956/955) and freeware ARsoft-LOG (Windows 7/8/10), MODBUS-RTU

• software and programmer allow you to view the measured value and quickly configure single or few sets of parameters previously saved in the computer for re-use, e.g. in other devices of the same type (duplicate configuration)
• high accuracy, long-term stability and immunity to interference
• optionally (when ordered): 24V ac/dc power supply adapter, SSR alarm outputs, analogue output 0/2÷10V and RS485 interface
• power supply: 230Vac (85÷260 Vac) / 5VA, 24Vac/dc (18÷72Vdc/5W,15÷50Vac/5VA)
• operating temperature range: 0÷50 °C
• relative humidity range: 0÷90 % (no condensation)
• wall-mounted housing 300x106x55 mm, made of aluminium profile, IP51