Constant Current Sensor supply (hol496)
The device contains a temperature-compensated, extremely stable current source.
This current source supplies a constant current of 1mA at the output, which is 99.2% of the output signal immediately after switching on.
This output signal is monitored by a measuring voltage which is directly proportional to the detuning but also proportional to the supply current and visualized by two LEDs on the front panel.
In a voltage range below 0.5V or above 8V the red LED lights up and signals a possible short circuit or an interruption.
In the voltage range between 0.5V and 8V the green LED lights up and indicates normal operation.
The output is permanently short-circuit proof, but there is no galvanic isolation between supply voltage and current output.
The device has been developed for sensor supply with a constant current source of 1mA.
The constant current source must be extremely stable for this purpose.
In addition, the constant current source for supplying a sensor element is temperature compensated.
Immediately after switching on, the supply current at the output is 99.2% of the maximum output current.
After one minute, 99.5% of the maximum sensor supply current is already available at the device output.
Operating voltage:
24V DC ±10%
Constant Current:
max. 30mA
Temperature range:
0°C - 70°C
Degree of protection:
IP20
Housing:
Kunststoff-Schnappschienengehäuse
Housing dimensions:
25 x 79,2 x 74mm (B x H x T), without terminals and control units
weight:
appr. 90g
Fuse:
Glass fuse 1A (5x20mm)
Output signal:
Constant Current, 1mA
Measuring circuit Monitoring:
Cable break and Short circuit