TDC
– HB 06-01-2015
OMC-116 installation manual
page 4 of 11
OBSERVATOR
instruments
OMC-116
Installation manual
Pre installation notes & requirements
The OMC-116 can
’t be directly powered by an Obsermet display (like OMC-138/139) or data
collection unit (like the OMC-183/184). A separate power supply is required:
12 -15Vdc 1A
when no heating is required
24Vdc 10A
when sensor heating is required
The heating is temperature and voltage controlled, do not use a 24V
power supply <10 A.
Recommended cabling:
Without heating (12-15Vdc):
2x2x0.75 mm2 shielded
With heating (24Vdc, 10A):
2x2.5mm2 ( power, max 30m)* + 2x0.75mm2 shielded
*The heating will not be operated if the voltage is below 20V. Especially
when long cables are used check that the losses over the cable are
acceptable and the voltage at the sensor is well above 20V. Alternatively
the power supply unit must be placed closer to the sensor and/or thicker
cable or a power supply with a higher voltage must be used (voltage at
the sensor may not exceed 28V).
For Marine applications and locations with possible heavy vibrations
only the OMC-116-M should be used! This model is specific designed to
withstand heavy vibrations and is tested to DNV 2.4 environmental
vibration class C specifications.
