3500/04 138257-01 本特利内部安全栅模块
一、基础信息
品牌：Bently Nevada（贝克休斯旗下，美国原产）完整型号：3500/04，件号 138257-01产品类型：Internal Barrier 本安内部安全栅模块纠正区分：3500/40、3500/42、3500/45 才是位移 / 振动 / 速度监测卡；3500/04 只做防爆信号隔离，不具备测量运算功能，属于配套 I/O 隔离配件。
停产状态
3500 全系列原厂持续供货，3500/04 未正式 EOL 停产，可正常向原厂下期货单；市面现货充足。
二、核心功能作用
- 适配 3500/05 系统机架，用于防爆区域（I 类 / II 类危险区）探头信号隔离；
- 给电涡流探头、速度传感器提供本安限流限能保护，满足防爆认证；
- 单卡多路隔离回路，限制进入危险现场的电能，防止火花引爆油气；
- 搭配 3300XL 探头、3500 系列各类监测卡配套使用。
三、电气规格
- 适配机架供电：由 3500 机架背板统一供电 18–30VDC
- 隔离阻抗：≥10GΩ
- 回路限流：单通道最大 10mA
- 支持信号：电涡流位移、速度、键相探头直流信号
- 防爆认证：ATEX、CSA、CE，SIL 兼容设计
- 功耗：＜1W
- 工作温度：-40℃ ~ +85℃，存储 - 40~+85℃
- 湿度：0–95% RH，无凝露
四、尺寸与重量（标准单卡前板）
外形尺寸（高 × 宽 × 深）
95mm × 24.4mm × 95mm
净重（裸模块不含包装）
约 0.5kg
原厂独立包装毛重
0.75~0.85kg（含防静电袋、纸盒、说明书）
五、安装结构
- 标准 3500 机架单槽位热插拔模块，19 英寸机柜机架安装；
- 前端状态指示灯，后端配套对应 I/O 端子板接线；
- 仅安装于控制室安全侧，探头侧危险区无需额外外置安全栅。
六、配套与应用场景
- 配套监测卡：3500/40 位移、3500/42 速度、3500/45 轴向位置、3500/50 键相；
- 适用设备：电厂汽轮机、燃气轮机、化工压缩机、大型泵风机；
- 适用环境：炼油、煤化工、天然气等防爆工况机组振动保护系统。
1、 Basic Information
Brand: Bently Nevada (owned by Baker Hughes, originally from the United States)
Complete model: 3500/04, part number 138257-01
Product Type: Internal Barrier Intrinsic Safety Barrier Module
Correction and differentiation: 3500/40, 3500/42, and 3500/45 are the displacement/vibration/velocity monitoring cards; 3500/04 is only used for explosion-proof signal isolation and does not have measurement and calculation functions. It belongs to the supporting I/O isolation accessories.
Discontinued status
The 3500 series is continuously supplied by the original factory, and the 3500/04 has not been officially EOL discontinued. Delivery orders can be issued to the original factory normally; There is sufficient stock in the market.
2、 Core functional role
Suitable for 3500/05 system rack, used for probe signal isolation in explosion-proof areas (Class I/II hazardous areas);
Provide intrinsic safety current and energy limiting protection for eddy current probes and speed sensors to meet explosion-proof certification requirements;
Single Cardo circuit isolation circuit, restricting the entry of electrical energy into hazardous sites to prevent sparks from igniting oil and gas;
Used in conjunction with 3300XL probes and various 3500 series monitoring cards.
3、 Electrical specifications
Adaptive rack power supply: Unified power supply of 18-30VDC from the 3500 rack backplane
Isolation impedance: ≥ 10G Ω
Loop current limiting: maximum 10mA per channel
Support signals: eddy current displacement, velocity, key phase probe DC signal
Explosion proof certification: ATEX, CSA, CE, SIL compatible design
Power consumption:<1W
Working temperature: -40 ℃~+85 ℃, storage -40~+85 ℃
Humidity: 0-95% RH, no condensation
4、 Size and weight (standard single card front panel)
Dimensions (height x width x depth)
95mm × 24.4mm × 95mm
Net weight (bare module without packaging)
About 0.5kg
Original independent packaging gross weight
0.75~0.85kg (including anti-static bag, paper box, and instruction manual)
5、 Installation structure
Standard 3500 rack single slot hot swappable module, installed in a 19 inch cabinet rack;
Front end status indicator light, matched with corresponding I/O terminal board wiring at the rear end;
Only installed on the safe side of the control room, no additional external safety barriers are required for the hazardous area on the probe side.
6、 Supporting and application scenarios
Supporting monitoring card: 3500/40 displacement, 3500/42 speed, 3500/45 axial position, 3500/50 key phase;
Applicable equipment: power plant steam turbines, gas turbines, chemical compressors, large pump fans;
Applicable environment: Vibration protection system for explosion-proof units in refining, coal chemical, natural gas and other industries.
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