Jumho Smoke Detection System

Description

The Smoke Detection System can continuously detect several cargo holds. The sampling pipes transmit air samples from cargo holds to a smoke detector. The LCD Monitor and Alert Unit displays smoke and fault alarms, and connects to Remote Display Unit. The system complies with SOLAS Chapter 2 Regulation 13-1 Sample Extraction Smoke Detection Systems, and IEC 79, EN 50250.

Smoke Detection System contains the following sections:

Sampling lines

Sampling and analysis unit

Fans

RWU display and alarm unit

RWU remote display unit

Figure 1 Smoke DetectionSystem Framework

Operating Methods
The smoke detector transmits 4~20mA signals to the Sampling and Analysis Unit of Smoke Detection System. The LCD Monitor and Alert Unit displays different alarm information. When smoke concentration exceeds limit, the LCD Monitor and Alert Unit initiates visual and audible alarms. You can confirm and silence alarms by pressing pads on the panel.

System Termination

Figure 2　Smoke Detection System Termination

Each section's name is as follows
①　3-way valve
②　PVC pipe
③　Samping and analysis unit
④　RWU dispaly and alarm unit
⑤　Steel pipe
⑥　RWU remote display unit
⑦　Fan

Smoke Detector
Jumho Electric improves reliability, stability, and consistency of the point photoelectric smoke detector by using infrared scattering technology and imported optoelectronic devices. With unique maze design, the detector is dust- and pest-proof, and anti-interferes with external light. The intrinsically safe detector, with ExiIICT6 explosive-proof mark, is applicable to zone 1, 2 in petroleum chemical industry. In addition, the detector complies with GB 3836.1-2000 Electrical Apparatus for Explosive Gas Atmospheres, Part 1: General Requirement, and GB 3836.4-2000 Electrical Apparatus for Explosive Gas Atmospheres Part 4: Intrinsic Safety “I”.

Figure 3　Smoke Detector

Detector Specifications

Operating voltage…………………………………………………12V DC～24V DC

Quiescent current…………………………… ……………………less than 60μA

Static voltage range………………………………………………12V DC～24V DC

Alarm current………………………………………………………10 mA～30 mA

Saftey barrier………………………………………………………U0=28V，I0=93mA

Explosion-proof mark………………… …………… ……………ExibIICT6

Visual indicator………………………… …………………………off=normal, steady red=alarm

Operating temperature………… …………… ……… … ………-10℃～+40℃

Operating humidity…… ……………… …… ……………………less than 95%, non condensing

Atmospheric pressure…… ……… … …… ………… …………86kPa～106kPa

Dimensions…………………… ……………………… … ………100mm (diameter)
56.2 mm(Length) (with base)

System Specifications

Channels……………………………………………………………8-channel gas detection
8-channel pressure detection

Detection type………………………………………………………gas

Power requirement………… … ……… …… …… … ………… 24 VDC

Output range………… ……………… ……………………………4～20 mA

Connection…………………………………… ……………………3-wire sensor

Explosion proof……… …………………… ………………………Ex ib ⅡA T3

Protection grade……………………………………………………IP68

Operating temperature………… …………… ……… … ………-20℃~+60℃

Storage and transportation temperature…… ………… ………-40℃~+70℃

Operating humidity…… ……………… …………………………10 to 90% RH, non condensing

Storage humidity……………………… ……………… …………5% to 95% RH, non condensing