Simex SRT-73, User Manual

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User manual - METER SRT-73
- Do not use the unit in areas threatened with excessive shocks, vibrations, dust,
humidity, corrosive gasses and oils.
- Do not use the unit in areas where there is risk of explosions.
- 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).
2. GENERAL CHARACTERISTICS
The SRT-73 meter is equipped with Pt 100/Pt 500/Pt 1000 type input, with automatic
connection recognition ( three or four wire sensor). The measurement range spans from
-100 °C to +600 °C, and input is fully linearised accordingly to PN-A2:1999
standard. Result is showed on 4-digit LED display.
The device can be equipped with one or two relay (or OC type) outputs. Device
SRT-73
is equipped with RS-485 / Modbus RTU communication interface and sensor supply output.
The meter can be ordered in two power supply versions.
SRT-73 can be used for controlling and regulation of processes need proportional and
threshold control like: temperature processes (heating or cooling), valves controlling or other.
3. TECHNICAL DATA
Power supply voltage
(depending on version)
External fuse (required)
Power consumption
85...
230
...260V AC/DC; 50 ÷ 60 Hz (separated)
or 19...
24
...50V DC and 16...
24
...35V AC (separated)
T - type, max. 2 A
max. 4.5 VA @ 85 ÷ 260V AC/DC
max. 4.5 VA @ 16V ÷ 35V AC
max. 4.5 W @ 19V ÷ 50V DC
Measurement input Pt 100/ Pt 500/Pt 1000 type with automatic connection
recognition ( 3 or 4-wires)
Measurement range -100°C ÷ +600°C
Measurement accuracy ± 0,1% @ 25°C; ± one digit
Measurement wires resistance
max. 20
Ω
(every wire)
Temperature stability 50 ppm / °C
Outputs
relay:
or OC-type:
sensor power supply:
0, 1 or 2 NO, 1A/250V AC (cos
ϕ
= 1)
0, 1 or 2; 30mA / 30VDC / 100mW
24V +5%, -10% / max. 100 mA, stabilized
Communication interface RS 485, 8N1 and 8N2, Modbus RTU, not separated
Baud rate 1200 bit/s ÷ 115200 bit/s
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