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参数资料
| 型号： | X111-11 |
| 厂商： | POSITEK LTD |
| 元件分类： | Position, Linear, Inductive Sensor |
| 英文描述： | POSITION, LINEAR SENSOR-INDUCTIVE |
| 文件页数： | 3/4页 |
| 文件大小： | 243K |
| 代理商： | X111-11 |
For further information please contact:
www.positek.com sales@positek.com
Tel: +44(0)1242 820027 fax: +44(0)1242 820615
Positek Ltd, Andoversford Industrial Estate, Cheltenham GL54 4LB U.K.
Intrinsic safety means limiting the electrical energy in a
system to a level incapable of causing ignition in any
normal or fault condition.
This can only be
accomplished by installing an energy-limiting interface
in the wiring between hazardous and non-hazardous
areas.
Limiting the discharge of energy-stored devices in
electrical equipment such as capacitors and inductors
virtually eliminates the possibility of generating a spark
and thus a source of ignition.
The BX002 (0.5 to 9.5V) and BX003 (4 to 20mA)
Isolated Galvanic Barriers are the best choice for use
with Positek Intrinsically Safe Position Sensors. The
hazardous area circuits are certified intrinsically safe
[EEx ia] IIC. Connections between hazardous and non-
hazardous areas are transformer isolated, eliminating
the requirement for a high-integrity intrinsically safe
earth.
Choosing either a BX002 or BX003 barrier not only
provides signal isolation but allows sensors to be
calibrated to a specific barrier type before shipping,
ensuring the respective barrier output corresponds to
the sensor position over the calibrated range.
The
isolated power circuit limits the energy supply to the
sensor to ensure the maximum safety parameters
required for Positek sensors are not exceeded.
ATEX approved
Tri-port isolated
DIN rail mounted
Voltage and current output versions
SPECIFICATION
POWER SUPPLY
Power rail terminals 11 and 12
Voltage
20-35V dc
Power consumption
ca. 0.7W for voltage output, 1.4W
current output
INPUT CIRCUIT (terminals 1,2,3,4,5)
Transformer isolated
Intrinsically Safe [EEx ia] IIC
BAS00ATEX7171
Umax out = 10.4V
Imax out = 46mA
Voltage across sensor
ca. 4.8 volts
Lead resistance for 15mA
12Ω maximum (all connections)
Input resistance terminal 3
17MΩ min
OUTPUT CIRCUIT (terminals 7/8)
Output options
Voltage
BX002 0.5 to 9.5V
Output resistance
< 30Ω
Current loop
BX003 4 to 20mA
Load resistance
0 - 1kΩ
TRANSFER CHARACTERISTICS
Non-linearity:
< ± 5mV for voltage outputs
< ± 10 A for current outputs
Temperature drift:
< 0.5mV/°C for voltage outputs
< 1A/°C for current outputs
Settling time to 1% of span:
< 25ms for 10-90% step change
Rise time:
< 8ms 10-90% of step change
Bandwidth
dc to 100Hz (-3dB)
Isolation:
2500V between safe area terminals and
hazardous area terminals, 50V between
power rail terminals and output
terminals (7 and 8)
ELECTROMAGNETIC COMPATIBILITY
Emissions:
to EN50081-2
Immunity:
to EN50082-2
Ambient temperature range:
-20° to 60°C working, -40°C to +100°C
storage
Protection class
IP20
How
it works; a 20-35V dc external power supply is
connected to the dc/dc converter D1 which provides
isolation. The output from D1 is regulated by A1 and
TR1 to provide a nominal 5V supply for the sensor. The
barrier and sensor can be connected by three wires; 5-
wire connection capability is available to compensate for
volts drop in long cable runs.
D2 provides isolation between the sensors output and
the barriers 0.5-9.5V or 4-20mA current loop output.
INTRINSICALLY SAFE
BX002 and BX003 Sensor Barrier
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