The WP-8000-EX series detection end isolation safety barrier (with power distribution) provides isolated intrinsic safety power voltage to transmitters in hazardous areas on site, and isolates and converts the (4-20) mA signal generated by the transmitter before transmitting it to the safety zone control system or other unit combination instruments.
This isolated safety barrier requires independent power supply, with electromagnetic isolation between the power supply input circuit output circuit.
◆ Characteristics
Provide the transmitter with a distribution voltage of ≥ 16VDC (power supply of 22 ≥ VDC).
Isolate and transmit the transmitter (4-20) mA signal.
● Optional (4-20) mA or (1-5) V signal output, or other required DC signals.
Modular core design, no need for zero and full adjustment.
Equipped with a working power indicator light.
● Intrinsic safety input circuit [Exia] IIC, input circuit overcurrent protection.
● Plug and unplug terminal block, DIN rail card installation.
● Working power supply
Power wiring: independent wiring terminals 13-, 14+, can be plugged and unplugged with power on
Power supply voltage: (20-30) VDC
Current loss:<50mA at 24VDC (one in one out)
< 60mA (one in and two out)
< 110mA (two in, two out)
Power indicator: Power on LED light on: green
● Input signal (Exia IIC hazardous area)
Transmitter signal input: (4-20) mA
Distribution voltage for driving the transmitter: ≥ 16VDC (power supply ≥ 22VDC)
Input impedance: 50 Ω (one in one out, one in two out);
100 Ω (two in, two out)
● Output signal (safe zone)
Output current: (4-20) mA
Allowable load for current output: 0~350 Ω (4mA~20mA, 0~20mA output)
Output voltage: (1-5) V
Voltage output impedance: ≤ 500 Ω
Ripple (Vp-p): < 10mV
● Performance indicators
Standard accuracy: ± 0.5% FS, ± 0.2% FS
Temperature drift: ± 0.015%/℃
Response time: ≤ 1s (10% → 90%)
Stability time: ≤ 3s
Impact of power supply voltage variation: ± 0.1% (allowable voltage range)
Influence of load resistance change: ± 0.1%/250 Ω
Channel isolation: isolation between input output power supply
Insulation resistance: ≥ 100M Ω/500VDC (AC)
Isolation capability: 2500VAC/1 minute 50Hz
Maximum explosion-proof voltage: 250VAC
Electromagnetic compatibility: Complies with relevant electromagnetic standards of IEC 61000
● Environmental parameters
Working temperature: (-20~+60) ℃
Storage temperature: (-40~+80) ℃
Environmental humidity: (5~+95)% RH (non condensing)
● Structure
Card mounted type; Modular watch core; ABS material casing; Plug in terminal
Whole machine weight: approximately 110g
● Safety and Explosion proof Certification Parameters
The whole machine meets the requirements of GB3836.1-2000 and GB3836.4-2000
Standard related requirements
Explosion proof grade mark: [Exia] IIC
Security authentication parameters:
Um: 250V Uo: 28V Io: 93mA
Po: 0.65W Lo: 2.4 mH Co: 0.03 μ F
◆ External dimensions
Dimensions: Width x Height x Depth=16 x 116 x 110 (mm)
