OTC 4277 Manual Del Usuario página 4

Model No.
4277
Connections
By flexible hose (2 - 3 ft recommended length)
Inlet Connection: 1-5/16" -12UN #16 SAE ORB
Outlet Connection: 1-1/16" -12UN #12 SAE ORB
Dimensions/Weight:
12.25 x 4.125 x 4.875 inches, 14.5 lbs
(310 x 105 x 120 mm, 6.6 kg)
Adapters are available to suit most applications. Consult sales office for details.
Connect the unit into the hydraulic system as required using two 3 - 6 ft (1 - 2 metre) long
hoses. Ensure that the flow you wish to measure is passing through the unit in the direction of
the double arrows on the flow indicator dial. Flow is allowed in the direction of the single arrow,
but this flow will not be measured.
Measurement and Indication
Flow
Measured by a tapered metering piston moving within a fixed, sharp-edged orifice designed
to minimise the effects of changes in temperature and viscosity. The piston movement is
proportional to the change in flow rate. In reverse the piston moves back to allow the flow to
return at low pressure.
Accuracy: ± 4% of full flow over range 20 - 40 cSt.
Pressure Drop
At full flow with oil viscosity 28 centistokes.
Model Pressure Drop at Max. Flow
4277 218 psi
Pressure
Glycerine filled 2-1/2" (63 mm) pressure gauge 0 - 6000 psi (0 - 420 bar) gives a continuous
reading of system pressure.
Accuracy: ± 1.6% of full scale
Temperature
For continuous use at fluid temperatures up to 180°F (80°C), for intermittent use for less than
10 minutes, at up to 230°F (110°C). Indicated in °C and °F by a thermometer built into the
flowblock to measure temperature changes in the fluid passage.
Accuracy: ± 5°F (± 2.5°C )
2
Specification
Flow Range Max. Working Pressure
2.0 - 54 US gpm
(10 - 200 lpm)
6000 psi
(420 bar)
Adaptors
Adaptors are fitted as standard to provide inlet
& outlet connections.
Temperature Range
65 - 230 °F
(20 - 110 °C)