Schaller Visatron VN115/87plus Oil Mist Detector – Measuring Head Art. No. 11651

Product Information

Manufacturer	Schaller Automation, 66440 Blieskastel, Germany
Brand	VISATRON®
Model	Measuring Head VISATRON® VN115/87plus
Art. No.	11651 (shown as "11 651")
Serial No.	S.No. 0310047924
Product Type	Oil Mist Detector – measuring head with Oil Mist / Reset / Alarm push-button unit
Setting	Negative pressure to be set: 60 mm WC (from nameplate)
Indicators	Oil-Mist Alarm, Test, Ready LEDs; 14-step opacity / error code LED bar
Marking	CE
Power Rating	Not clearly visible in the supplied photograph
Condition	Refurbished (subject to confirmation)
Supplier	SM MARINE SERVICE™, Chattogram, Bangladesh

Product Introduction

The Schaller Visatron VN115/87plus is an oil mist detector that protects diesel engines against crankcase explosions by monitoring oil mist concentration and giving alarm, slow-down or shut-down signals. This unit is the measuring head, Art. No. 11651, with an attached Oil Mist Reset / Alarm push-button. SM MARINE SERVICE™ (https://www.smmarineservice.com/) supplies Visatron oil mist detectors and spare parts worldwide.

What Is This Equipment?

The VN115/87plus draws samples from the engine crankcase through a suction tube system (header suction tube sampling) to the measuring head, where an optical sensor measures opacity. The front shows Oil-Mist Alarm, Test and Ready LEDs and an LED bar that indicates opacity and, by blinking LED number, the error code. It is used on two-stroke and four-stroke engines.

Main Features

• Optical oil mist (opacity) measurement
• Oil-Mist Alarm, Test and Ready indication
• 14-LED opacity bar with built-in error code display
• Self-diagnosis of airflow, optical sensor, temperatures, supply voltage and electronics
• Separate Oil Mist / Reset / Alarm push-button unit
• Rugged cast aluminium housing

Schaller Visatron VN115/87plus oil mist detector, Art. No. 11651 – SM MARINE SERVICE™

Main Technical Specifications

Model	VN115/87plus measuring head
Art. No. / S.No.	11651 / 0310047924
Measuring Principle	Optical opacity measurement
Sampling	Suction tube sampling from crankcase
Negative Pressure Setting	60 mm WC
Engine Types	2-stroke and 4-stroke
Outputs	Alarm signal; engine slow-down / shut-down
Supply Voltage	Not clearly visible in the supplied photograph

Inside the Unit: PCBs, Modules & Part Numbers

The nameplate error list names the internal modules; their part numbers are Not verified.

Electronic Module

Main electronics of the measuring head (error 2: electronic module defective). Part number: Not verified.

Optical Sensor

Measures oil mist opacity (error 4: defective; error 13: dirty). Part number: Not verified.

Airflow Sensor

Monitors sample airflow / negative pressure (error 3 and 14). Part number: Not verified.

Sensitivity Switch

Sets alarm sensitivity (error 5). Part number: Not verified.

Push-Button / Reset Unit

Oil Mist Reset Alarm button (error 7 refers to a push button). Part number: Not verified.

Main Components & Related Units

• Measuring head VN115/87plus (Art. No. 11651)
• Oil mist reset / alarm push-button unit
• Suction tubes and crankcase sampling connections
• Related models: VN115/87plus EX, VN115/93, VN116, VN301plus, VN2020

Marine & Industrial Applications

• Main and auxiliary diesel engine crankcase monitoring
• Merchant ships, offshore vessels, power plants
• Prevention of crankcase explosions

Nameplate with error code list, Art. No. 11651 and serial number

Common Problems & Troubleshooting

• Airflow alarm: check suction tubes, filters and negative pressure (60 mm WC).
• Optical sensor dirty: clean the optical path as per manual.
• Temperature errors: check engine room ventilation and installation location.
• Supply voltage errors: check the ship's power supply to the detector.

Safety notes: never ignore an oil mist alarm – follow engine slow-down / stop procedures. Do not open the crankcase until the engine has cooled down sufficiently. Isolate power before servicing.

Common Alarms

Error codes (blinking LED number) as printed on the measuring head nameplate:

• 14 – Negative pressure / airflow too low
• 13 – Optical sensor dirty
• 12 – Voltage of internal … (partly not clearly visible)
• 11 – Ambient temperature too low
• 10 – Ambient temperature too high (>70 °C)
• 9 – Electronics temperature too low (<0 °C)
• 8 – Electronics temperature too high (>75 °C)
• 7 – … push button defective (partly not clearly visible)
• 6 – Supply voltage too high
• 5 – Sensitivity switch defective
• 4 – Optical sensor defective
• 3 – Airflow sensor defective
• 2 – Electronic module defective
• 1 – Blinking: start-up phase

Maintenance Tips

• Check and clean suction tubes and filters regularly.
• Keep negative pressure at 60 mm WC.
• Use the Test function to check alarm operation.

Spare Parts & Replacement Availability

SM MARINE SERVICE™ supplies Visatron VN115/87plus measuring heads and spares; availability subject to confirmation. Send the nameplate photo (Art. No.), engine type, vessel name / IMO and delivery port. We ship worldwide.

Why This Equipment Is Still Used

The VN115/87plus is widely installed on main engines; replacing the measuring head with the same Art. No. keeps the existing suction system and wiring.

FAQ

1. What is the Visatron VN115/87plus?
An oil mist detector from Schaller Automation for engine crankcase protection.

2. What is Art. No. 11651?
The article number of this VN115/87plus measuring head.

3. What negative pressure is required?
60 mm WC, per the nameplate.

4. What does error 14 mean?
Negative pressure / airflow too low.

5. What does error 13 mean?
Optical sensor dirty.

6. Do you supply the internal electronic module / PCB?
On request – send a photo; part numbers are not public.

7. Which engines use it?
2-stroke and 4-stroke diesel engines.

8. Do you ship worldwide?
Yes.

Short Product Description

Schaller Automation Visatron VN115/87plus oil mist detector measuring head, Art. No. 11651, serial no. 0310047924, with the Oil Mist Reset / Alarm push-button unit. The detector samples crankcase atmosphere through suction tubes and measures oil mist opacity optically, giving alarm and slow-down or shut-down signals to protect two-stroke and four-stroke engines against crankcase explosions. The front shows Oil-Mist Alarm, Test and Ready LEDs and a 14-LED opacity bar that also displays error codes. Negative pressure is set to 60 mm WC. SM MARINE SERVICE™ supplies refurbished Visatron oil mist detectors worldwide.

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SM MARINE SERVICE™ – Marine Automation & Navigation Equipment Supplier

Available Equipment Conditions: New • Used • Refurbished • Reconditioned (Specific product condition and availability are subject to confirmation.)

Stock Locations: Bangladesh • China

Services: Worldwide Shipping • Technical Support • Spare Parts Supply • Marine Equipment Sourcing

Samir Market, DT Road, Pahartali, beside CDA Market, Chattogram, Bangladesh

Mobile / WhatsApp / Viber: +88 01818 929292

Email: info@smmarineservice.com

Website: https://www.smmarineservice.com/

Contact SM MARINE SERVICE™ today for a quotation on the Visatron VN115/87plus oil mist detector and spare parts.

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