Overview
The isolated safety barriers with flame and smoke detectors input signals, which can provide isolation power for flame detectors in hazardous areas. The flame detector generates 0-40mA signals from the hazardous area and transmits them to the safe area, playing a smoke alarm role. This product adopts output loop power supply and is suitable for DCS/PLC systems with loop power supply.
This product does not require independent power supply, and the input and output terminals are isolated.
Specifications
| Input in harzadous area | |
| Input signal | 0~40mA |
| Distribution voltage | Uo≥Ui-(280+RL)I-6,Ui≤24V Uo≥18-(280+RL)l,Ui>24V |
| Short circuit current | ≤65mA (when powered by 24V) |
| Safety side output: | |
| Output signal | 0~40mA |
| Signal power supply | 20-35VDC |
| LED indicator | Green: power indication |
| Transmission accuracy | <0.2F.S |
| Response time | 2ms reaches 90% of the final value. |
| Temperature drift | 0.01%F.S/℃ |
| Temperature parameters | Working temperature: -20℃~+60℃ storage temperature:-40℃~+80℃ |
| Relative humidity | 10%~95% RH no condensation |
| Dielectric strength | Between intrinsically safe side and non-intrinsically safe side (≥ 3000VAC/min); between power supply and non-intrinsically safe terminal (≥ 1500VAC/min) |
| Insulation resistance | ≥100MΩ (between input/output/power supply) |
| Electromagnetic compatibility | According to IEC 61326-1(GB/T 18268), IEC 61326-3-1 |
| MTBF | 100000h |
| Wire requirements | Horizontal cutting surface ≥ 0.5mm2; Insulation strength ≥ 500V |
| Applicable field equipments | Flame and smoke detector |
| Installation place | Installed in a safe zone, it can be connected to intrinsic safety instruments in hazardous areas up to Zone 0, IIC, Zone 20, and IIIC |
| Intrinsically safe certification | |
| Explosion proof mark | [Ex ia Ga]lIC [Ex ia Da]lllC |
| Explosion-proof standard | GB/T3836.1-2021 GB/T3836.4-2021 |
| Terminals5-6, 2-3 | Um:250V AC/DC Uo=25.2V DC lo=93mA Po=586mW Co=0.083μF Lo=4.2mH |
| Certification body | CQST(China National Quality Supervision and Test Centre for Explosion Protected Electrical Products) |
Dimension
Schematic diagram
Note:
PHD-11TN-11 does not include input 2 and output 2 parts