User manual - METER SRP-457
Voltage measurement accuracy
± 0,1% @ 25°C; ± one digit (for 0÷10 V range)
Voltage input resistance
> 50 k
Ω
Temperature stability
50 ppm / °C
Display range
-999 ÷ 9999, plus decimal point
Accepted prolonged input overload: 20%
Outputs
relay:
or OC-type:
sensor power supply
U
O
:
0 or 1 NO, 1A/250V AC (cos
ϕ
= 1)
0 or 1; 30mA / 30VDC / 100mW
24V ±5% / max. 100 mA, stabilized
Communication interface
RS 485, 8N1 and 8N2, Modbus RTU,
not separated
Baud rate
1200 bit/s ÷ 115200 bit/s
Display
LED, 4 digit, 57mm height, red
Data memory
non-volatile memory, EEPROM type
Protection level
F-type casing:IP 65
T-type casing:IP 67
Housing type
Housing material
Wall mounted, T-type or F-type
ABS + fibreglass
Housing dimensions
F-type casing: 213 x 185 x 118.2 mm
T-type casing: 230 x 140 x 96.5 mm
Operating temperature
(depending on version)
0°C to +50°C
or -20°C to +50°C
Storage temperature
(depending on version)
-10°C to +70°C
or -20°C to +70°C
Humidity
Altitude
5 to 90% no condensation
up to 2000 meters above sea level
Screws tightening max. torque
0,5 Nm
Max. connection leads diameter
2,5 mm
2
Safety requirements
according to: PN-EN 61010-1
installation category: II
pollution degree: 2
voltage in relation to ground: 300V AC
insulation resistance
: >20M
Ω
insulation strength between power supply and
input/output terminal: 1min. @ 2300V
insulation strength between relays terminal:
1min. @ 1350V
EMC
according to: PN-EN 61326-1
5
Summary of Contents for SRP-457
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