Ammeters / Voltmeters
EPV 741A
AC/DC Voltmeter
The EPV741A is a 4-digit digital voltage indicator. It offers a multi-function alarm output for lower and upper limits and a wide programmable scale. Optionally, it can communicate via the ModBus RTU protocol over isolated RS-485.
Technical Specifications
Display and Keypad
- Voltage Display
- 3 digits, 14.2 mm, 7-segment red LED
- Keypad
- Micro switch
Housing
- Weight
- Approx. 250 g (with packaging)
- Dimensions
- G72xY72xD97 mm
- Housing Type
- Flush panel mounting with clamps
Electrical Characteristics
- Supply Voltage
- 230 Vac +10% -20%, 50/60 Hz; 24 Vac ±10%, 50/60 Hz; 9-30 Vdc / 7-24 Vac ±10% SMPS module
- Connection
- 2.5 mm² terminal block
- Accuracy
- AC: ±1% of full scale (±2% for square wave); DC: ±1% of full scale; RMS: ±1% of full scale (±2% for square wave)
- Power Consumption
- 5VA
- Data Retention
- EEPROM (minimum 10 years)
- Sensitivity
- 0.01 V (if 50 is selected); 0.1 V (if 500 is selected, for input values above -100 V and below 100 V); 1 V (if 500 is selected, for input values below -100 V or above 100 V)
- Frequency Range
- DC, 10 Hz-200 Hz (10 Hz-70 Hz for square wave)
- Operating Temperature °C
- 0...50 ºC
Outputs
- Alarm Output
- 1 relay: 250 Vac, 8 A (resistive load), NO+NC
Inputs
- Input Range
- -500 V…500 V (if 500 is selected; voltages above ±1250 V DC will damage the device); -50 V…50 V (if 50 is selected; voltages above ±125 V DC will damage the device)
- Input Impedance
- 870 kΩ
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