Overview
The vibration sensor signal is input into the isolated safety barrier, which can realize the 1: 1 isolated transmission of the negative voltage signal output by the vibration sensor in the dangerous area to the safe area, and can transmit AC and DC signals respectively, which has high anti-interference function. The circuit provides isolated power supply for the field instruments.
This product needs independent power supply, and the power supply, input and output are isolated.
Specifications
| Input in harzadous area | |
| Input signal | -20V--0.5V |
| Distribution voltage | Open circuit voltage >-25V and 20mA: ≤-18V |
| Safety side output: | |
| Output signal | -20V--0.5V |
| load resistance | RL≥20kΩ |
| Supply voltage | 20-35VDC |
| Power consumption | ≤60mA (24VDC power supply, when 20mA) |
| LED indicator | Green: Power indicator |
| DC transmission accuracy | <±50mV |
| AC transmission accuracy | 0Hz~1kHz,±1% 1kHz~10kHz,-2%~+1% 10kHz~20kHz,-5%~+1% |
| Phase response | Less than 10 μ S is equivalent to -0.72° 200Hz -2° 600HZ -3.6° 1kHz -36° 10kHz -72° 20kHz |
| 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 | Vibration sensor, negative voltage generator |
| 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 |
| Terminals4-5-6 | Um:250V AC/DC Uo=14.7V DC lo=207mA Po=0.76W Co=0.05μF Lo=0.56mH |
| Certification body | CQST(China National Quality Supervision and Test Centre for Explosion Protected Electrical Products) |
Dimension
Schematic diagram
Note:
1. The power rail function is an optional function, and users need to specify the power supply method when placing an order
The selection of power rail connectors can refer to page 89 of the "Annex"