The DT4240 … AC Voltage Meter enable 0-125 VAC / 0-250 VAC/ 0-450 VAC (rms max.) voltage ranges to be displayed on the control panel. Large 5 digit, 14.2 mm height LED display make process value easily visible at a distance.
The displayed value is proportional to the True RMS value of the input voltage.
The instrument is available with the following output options:
- 2 normally open relay contacts (SPST) for limit switching or for simple control tasks
- 0-20 mA / 4-20 mA galvanic isolated scalable current output *
- RS232 / RS485 galvanic isolated communication output with MODBUS RTU slave protocol *.
(* either analogue or communication option can be implemented at the same time)
Easy on-site configuration through the front panel membrane keypad is a major advantage of the microcontroller-based technology. The configuration parameters: input range, voltage transformer ratio, signal filtering, output scaling, display refresh rate, limit modes, limit values, etc. are stored in EEPROM. The settings are protected by a two-level password against unauthorised manipulation.
The instruments has two power supply versions: 24 VDC ±10% (DT4240 …) or 230 V AC/DC ±10% (DT4240 … PS).
The DT4240 … is housed in a DIN standard 96 × 48 mm ABS case with IP 65 protection from the front and IP 30 protection from the back side, for installation on the control panel.
Analog output option:
RS232 communication interface option:
RS484 communication interface option:
RS485 bus topology: