Internal Clock Accuracy

Francis Wong
Francis Wong
Managing Director
Creating no-code websites and informative articles, such as this one, is what I enjoy. I also have a passion for search marketing and SEO.

Internal Clock Accuracy on Deckma Hamburg Bilge Alarm Monitors

The OMD series MEPC.107(49) 15ppm bilge alarms are equipped with an electronic data recording device that uses GMT(UTC) as the standard time. This device has a fixed internal clock that cannot be modified or calibrated by the user.

The internal clock is verified to be within +/- 2 minutes of GMT during the final quality check, and it is expected to maintain this accuracy for a long time, with minimal drift. However, depending on the environmental conditions and especially temperatures, the internal clock may deviate from the actual GMT time over time. Minor deviations of a few minutes are not a problem. For larger deviations, it is advisable to document the difference from GMT e.g., once a year, for clarity and proper interpretation of the data.

Only if the deviation exceeds +/- 10 minutes, it is recommended to return the device to the factory for clock adjustment. If sudden changes in deviation from GMT occur, it is recommended to return the device for diagnosis/repair.

Deckma OMD.

N&P Maritime is an authorized Singapore based service partner for RWO GmbH since 2016. We are one of their 40 global service stations. Our services include: 

  1. Troubleshoot/Repair,
  2. Authorized Deckma OCM(OMD) calibration
  3. RWO equipment health check

N&P Maritime has an extensive inventory for RWO/Deckma consumable spare parts such as coalescer filter, absorber polisher, zinc anodes, gauges, desiccators and more, in our warehouse.

We are able to provide same day delivery and there is no minimum order requirement.

Contact us at and/or +65 97684033 if you have any questions.

*RWO GmbH has been supplying future-proof made in Germany solutions for marine water treatment for over 45 years. Their product portfolio includes equipment for the treatment of drinking and process water as well as systems for pollution prevention such as oily water separators or sewage treatment plants. RWO is a technological leader in the field of oil/water-separation with over 16,000 units delivered worldwide. More than 40 global sales and service stations.