The OTC 4278 Hydraulic Flow Meter has been designed for easy connection to a hydraulic
circuit so that flow, pressure and temperature can be readily checked. The Flow Meter can
take full back pressure up to 6000 psi (420 bar), and the built-in loading valve enables many of
the operating conditions to be simulated. The unit can be connected anywhere in the hydraulic
system to test pumps, motors, valves and cylinders in both flow directions.
CAUTION: To prevent injury and / or property damage,
l Study, understand, and follow all safety precautions and operating instructions before
using this equipment. If the operator cannot read instructions, operating instructions
and safety precautions must be read and discussed in the operator's native language.
l No alteration shall be made to this product.
l Inspect the condition of the equipment before each use; do not use if damaged,
altered, or in poor condition.
l Ensure load valve is fully open prior to testing.
l Wear eye protection that meets the standards of ANSI Z87.1 and OSHA.
Introduction
Safety Precautions
1