User manual - METER SRP-457
- Do not use the unit in areas with significant temperature variations, exposure to
condensation or ice.
- Do not use the unit in areas exposed to direct sunlight.
- Make sure that the ambient temperature (e.g. inside the control box) does not
exceed the recommended values. In such cases forced cooling of the unit must
be considered (e.g. by using a ventilator).
The unit is designed for operation in an industrial environment and must
not be used in a household environment or similar.
2.
GENERAL CHARACTERISTICS
meter is equipped with one current input 0-20 / 4-20mA and one voltage
input 0-5 / 1-5 / 0-10 / 2-10V. Current input has additionally overcurrent protection circuit,
which protects standard resistor. The selection of active input is realised by software, and
selected input can be changed at any time. Additionally the
allows user to select a
conversion characteristic of several kinds: linear, square, square root, user defined (max.20
points length) and volume characteristics of a cylindrical tank in the vertical and horizontal
position. Result is showed on 4-digit LED display. Displayed values range can be selected by
user, from -999 to 9999, plus decimal point.
The device can be equipped with one relay (or OC type) output. Device
is
equipped with RS-485 / Modbus RTU communication interface and sensor supply output. The
meter can be ordered in two power supply versions.
The device has 4 buttons being used for main presets programming. To get high
protection level, the keyboard is mounted under transparent cover. To allow user to change
presets without opening the cover, an IR sensor is mounted. Remote controller keyboard is
equivalent to the device keyboard (Note, that remote controller is not a part of the
set
– it is an additional equipment).
Two waterproof, high IP protection ratings, wall mounted types of housing are available
(T-type and F-type), predispose the device to work in hard environment conditions.
3.
TECHNICAL DATA
Power supply voltage
(depending on version)
External fuse (required)
Power consumption
85...
230
...260V AC/DC; 50 ÷ 60 Hz
(separated)
19...
24
...50V DC and 16...
24
...35V AC (separated)
T - type, max. 2 A
max. 11 VA @ 85 ÷ 260V AC/DC
max. 11 VA @ 16V ÷ 35V AC
max. 8 W @ 19V ÷ 50V DC
Current input
0÷20 mA, 4÷20 mA overload protected,
maximum input current about 40 mA
Current measurement accuracy
± 0,1% @ 25°C; ± one digit (for 0÷20 mA range)
Current input resistance
< 65
Ω
(typical 55
Ω
)
Voltage input
0÷5 V, 1÷5 V, 0÷10 V, 2÷10 V
4
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Summary of Contents for SRP-457
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