DH Instruments E-DWT-H, Руководство по эксплуатации и обслуживанию

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E-DWT-H OPERATION AND MAINTENANCE MANUAL
© 2009 DH Instruments, a Fluke Company Page 12
2.3 Setup
2.3.1 Preparing for Operation
To prepare E-DWT-H for check out and operation:
Remove the protective plastic sheet from the RPM4-E-DWT front panel display.
Familiarize yourself briefly with the E-DWT-H front and real panels and controls (see
Section 1.3.1 ).
Connect the 12 VDC power supply pack to a source of 100 to 240V, 50-60 Hz AC power
and to the 12 VDC connection on the rear of the E-DWT; or, use the optional
battery/charger pack and cable, after battery has been charged (see Section 3.3).
Connecting power causes the RPM4-E-DWT to power up.
Observe the front panel display as the RPM4-E-DWT initializes, error checks and goes to
the MAIN RUN screen (see Section 3.6.1). If the RPM4-E-DWT fails to reach the main
run screen, service is required. Record the sequence of operations and displays
observed and contact a
DHI Authorized Service Provider (see Section 8).
If the E-DWT-H has dual Q-RPTs, check that one of the two green Valve Status LEDs on
the front of the E-DWT-H is lit. If neither of the green LEDs lights, check that the 12 pin
circular connector on the rear panel of the RPM4-E-DWT itself is properly connected to
the J1 ACC. connector.
Install the four variable volume handles into the variable volume hub on the front of the
E-DWT-H.
Leave the stainless steel plug in the top and rear TEST1 and TEST2 ports. Check that
the glands holding the plugs are tight.
Check/Set Security Level
RPM4-E-DWT has a security system based on user levels. By default, the security
system is set to “low” (low security includes access restriction to internal calibration
coefficients) and there is no password required to change the security level. See Section
3.9.5.5 for information on the security level system. As part of the RPM4-E-DWT startup,
determine the security level that is appropriate for the RPM4-E-DWT and set a password
if desired.
Note
RPM4-E-DWT is delivered with the security level set to “low” to avoid
inadvertent altering of critical internal settings but with access to changing
security levels unrestricted. It is recommended that the low security level
be maintained at all times and password protection be implemented if
control over setting of security levels is desired.
2.3.2 Filling E-DWT-H with Calibration Fluid and Purging Air
A standard E-DWT-H is delivered already filled and primed with Sebacate calibration fluid
and should not need additional filling and priming before use.
If your E-DWT-H was received not filled with fluid, it needs to be filled and primed with the
fluid with which it will be operated. See Section 5.4.3 for instruction on filling and priming an
empty E-DWT-H with calibration fluids.