FP4, FP4W
34
ANALOGUE INPUTS (FP4, FP4W)
Number of inputs
2 (input type (0/4-20mA/RTD/U) configurable by
jumpers inside the device)
Update rate
0.5 s/display every 1 s
Low-pass digital filter (damping filter)
(3)
A time constant programmed in the range 2 .. 60 s
Galvanic isolation between inputs
None
Galvanic isolation from the other circuits
Functional, 250 VAC
Maximum input voltage
±30 VDC between terminals A(I+), B(I-)
(3)
Device has two low-pass filters. Notch filter designed to reject 50/60 Hz interference set automatically
depending on the measurement update rate. Digital low-pass filter with time constant is programmable by
the user.
Configuration: 0/4-20mA input
(4)
Measurement range
0 .. 22 mA
Input resistance
<100 Ω
Initial accuracy (T
a
=+25 °C)
±0.1% of range (typically
0.05% of range)
Conversion characteristic
Linear or User
Transducers powered from recorder
24 VDC (+10/-20%), 24 mA (current-limited
polymer fuse)
(4)
The device is delivered in the 0/4-20mA configuration.
Configuration: R/RTD input
Sensor type
Resistive (refer the table below)
Linear resistance
Sensor connection type
2-wire
Sensor current
420 μA
Wire resistance compensation in the 2-wire connection User programmed in the range of -
99 .. +99 Ω
Resistance of wires (to the sensor)
max 50 Ω
Transducer resistance range
0 .. 2700 Ω
Initial accuracy (T
a
=+25 °C)
±0.5 Ω (typically ±0.3 Ω)
Conversion characteristic for R
Linear, User or sensors
RTD sensor type, range and accuracy
Refer the table below
Configuration: U (±10 V) input
Voltage range
-10 .. +10 V
Input resistance
>10 kΩ
Conversion characteristic (for U)
Linear or User
Initial accuracy (T
a
=+25 °C)
±0.5% of range
PULS TYPE INPUTS (FP4, FP4W)
Number of inputs
2
Measurement range
0.01 Hz .. 10 kHz, additional filter disabled
0.01 Hz .. 1 kHz, additional filter enabled
Minimum pulse width
50 μs, additional filter disabled
0.5 ms, additional filter enabled
Maximum input voltage
±30 VDC (between terminals F+ and F-)
Frequency measurement
Conversion characteristic
Linear or User
Initial accuracy (T
a
=+25 °C)
0.05% * f ±0.1 Hz
Pulse counting
Conversion characteristic
Linear
Measuring range
0 .. 10 kHz
