JOWA SEAGUARD
15 ppm 舱底水报警器（OWS 监测仪）
JOWA SEAGUARD is a 15 ppm oil content alarm on the discharge of the oily water separator (OWS), approved to IMO MEPC.107(49). It has two ppm alarm outputs, automatic sensor flushing with clean water and an event log on a sealed SD card (GMT date/time, ppm, separator status, valve, alarms, flow). The manual covers technical data, installation and setting the flow through the sensor, the menus (service, settings, log, test/simulation), downloading the log to a PC, maintenance, error codes, P&ID, drawings, spare parts and class certificates.
点击模型上的零件，查看编号和用途。打开 3D 说明书
保养规程
Weekly sensor cleaning and flushing
- Clean the sensor with the brush from the kit. 第 21 页
- Enter Service menu → Clean sensor. 第 21 页
- In the CLEAN SENSOR menu select Flush sensor (flush without zero calibration). 第 21 页
Monthly zero calibration
- Clean the sensor (see the weekly procedure). 第 21 页
- Make sure the water is completely clean and free of air bubbles. 第 21 页Reading before calibration about 0, maximum 2 ppm
- Service menu → Clean sensor → Zero calibration, confirm with YES. 第 21 页
Alarm check by simulation (MEPC.107(49) §4.2.5)
- Make sure the real value is below 15 ppm — otherwise the simulation will not start. 第 18 页
- Start the separator (otherwise the simulation is not recorded in the log). 第 19 页
- Test menu → Simulation, press YES. 第 19 页
- The reading rises from the real value to 20 ppm (2 s steps); at the set point the alarm trips and the overboard discharge valve closes. 第 19 页
- After returning to the real value the unit goes back to normal mode; a log entry is created. 第 19 页During the simulation the real value is still monitored — above 15 ppm a real alarm will trip
Downloading the log to a PC
- Connect a null-modem cable (2 × DB9 female) from the RS232 connector on the power board to the PC COM port; use a USB–RS232 adapter if needed. 第 16 页
- In a terminal program create a "Bilge alarm" connection, select the COM port, set 38400 baud, 8 bits, no parity, 1 stop bit, no flow control. 第 16 页
- Start capturing text to a file (Transfer → Capture text). 第 16 页
- On the unit: Log menu → List log files → enter the date → select the entry → Print to PC → format Bill or Sheet. 第 16 页
- Stop the capture in the terminal and open the saved file. 第 16 页
Setting the flow through the sensor
- Find the restrictor behind the coupling at the sample outlet (standard 1 mm orifice). 第 7 页
- If the flow is too low, drill the orifice 0.5 mm larger and check again; repeat in 0.5 mm steps. 第 7 页Nominal 2 l/min
- The restrictor must always be in the outlet before the coupling is connected. 第 7 页
保养周期
| 项目 | 周期 | 操作 | 说明书 |
|---|---|---|---|
| Sensor | Weekly | Clean the sensor with the brush and run a manual flush (Service → Clean sensor → Flush sensor) | 第 21 页 |
| Sensor | Monthly | Zero calibration (Service → Clean sensor → Zero calibration) after cleaning, on clean water without bubbles; reading before calibration not more than 2 ppm | 第 21 页 |
| Control unit battery | Every 2 years | Replace the battery inside the control unit | 第 21 页 |
| Accuracy check | At every renewal of the IOPP certificate | Check/calibration by the manufacturer or an authorised person, or replacement with a calibrated sensor; keep the certificate on board | 第 21 页 |
故障及处理方法
ERR 2 — clock failureHardware failureERR 4 — memory errorMemory card loose or faulty (corroded contacts)ERR 8 — sensor not connectedBroken/loose cable or faulty sensorERR 10 — sensor cleaning requiredNo clean water, dirty sensor, failed auto-flush, air bubbles, faulty sensorERR 20 — sensor temperatureTemperature outside +1…+60 °C or faulty sensorERR 40 — log truncatedLog recording interrupted by power failureERR 80 — unknown errorSoftware failure or no ID in the Information menuPPM: O/R — out of rangeValue outside 0–30 ppm, sample too dirty, faulty sensor
技术参数
| Measuring range | 0–30 ppm (trend up to 40 ppm) | 第 5 页 |
|---|---|---|
| Alarm 1 and 2 set points | 0–15 ppm, factory 15 ppm | 第 5 页 |
| Alarm 1 / alarm 2 delay | 0–10 s / 0–540 s (factory 0) | 第 5 页 |
| Power supply | 110–230 V AC 50/60 Hz, < 15 VA | 第 5 页 |
| Sample and clean water pressure | 0.5–10 bar | 第 5 页 |
| Sample flow | nominal 2 l/min | 第 5 页 |
| Sample and ambient temperature | +1…+60 °C | 第 5 页 |
| Current output | 4–20 mA (or 0–20 mA) for 0–30 ppm, load up to 150 Ω | 第 5 页 |
| Alarm contacts | Alarm 1: 3 A/250 V; alarm 2: 3 A/24 V | 第 5 页 |
| Pipe connections | G ¼" female thread | 第 6 页 |
| Response time to closing the overboard discharge | not more than 20 s (whole system) | 第 6 页 |
| Restrictor at sample outlet | Ø11 × 4 mm, 1 mm orifice | 第 7 页 |
| Protection / weight | IP65 / 7.5 kg | 第 5 页 |
| Log to PC (RS232) | 38400 baud, 8 bits, no parity, 1 stop bit | 第 16 页 |
备件与目录号
| 零件 | 编号 | 数量 | 说明书 |
|---|---|---|---|
| Sensor unit | 86003-00001 | 1 | 第 33 页 |
| Flow restrictor | 86009-90113 | 1 | 第 33 页 |
| Power board | 86001-00030 | 1 | 第 33 页 |
| CPU board | 86001-00031 | 1 | 第 33 页 |
| SD card | 86001-00033 | 1 | 第 33 页 |
| 3-way valve | 86001-00023 | 1 | 第 33 页 |
| Solenoid with contact | 86001-00024 | 1 | 第 33 页 |
| Cleaning brush | 83070-00002 | 1 | 第 33 页 |
| Fuse 1 A | 94007-52010 | 第 33 页 | |
| Fuse 0.5 A | 94008-52050 | 第 33 页 | |
| Flow switch | 19070-14386 | 1 | 第 33 页 |
| Battery | 86001-00036 | 1 | 第 33 页 |
| Printer | 88096-00020 | 第 33 页 | |
| Null-modem cable | 88096-10001 | 第 33 页 | |
| RS232–USB adapter | 88096-10002 | 第 33 页 | |
| Sending the sensor to JOWA for calibration | 86010-00010 | 第 21 页 |
来源：制造商说明书《Manual JOWA SEAGUARD》，共 51 页。页码以原文为准。作业前请核对船上的说明书。
本页为自动翻译。零件号、代码和页码与原文一致。