Fluke RPM4 manual Pmax! 350 kPa a Hi Open SDS? 1no 2yes

3. OPERATION

Use [SDS] to OPEN SDS if it is CLOSED for the active Q-RPT and/or to CLOSE SDS for the active and inactive Q-RPT.

When [SDS] is pressed, there are three possible results depending whether the active Q-RPT is SDS equipped and ON (see Section 3.5.4.2), and whether its SDS is OPEN or CLOSED.

1.If the active Q-RPT IS NOT SDS equipped or its SDS if “full time OFF” (see Section 3.5.4.2): <No SDS on RPT> or <SDS is OFF and OPEN> is displayed for 5 seconds and operation returns to the main run screen. If there is a second Q-RPT with SDS, its SDS is CLOSED.

2.If the active RPT IS SDS EQUIPPED and SDS on the active RPT is OPEN: SDS is CLOSED and operation returns to the main run screen.

3.If the active RPT IS SDS EQUIPPED and SDS on the active RPT is CLOSED: The OPEN SDS routine is presented. The display is :

1.Maximum acceptable pressure of active Q-RPT (always absolute on an Axxx Q-RPT and gauge on a Gxxx Q-RPT).

2.Position designator of Q-RPT for which SDS will be opened.

Pmax! 350 kPa a Hi Open SDS? 1no 2yes

Check that the pressure applied to the TEST(+) port does NOT exceed the maximum acceptable value for the Q-RPT. Select <1no> to return to the main run screen without OPENING SDS, select <2yes> to OPEN SDS and return to the main run screen with SDS OPEN (the active Q-RPT open to the TEST(+) port).

Opening SDS with a pressure greater than Pmax! applied to the test port may cause overpressure damage to the Q-RPT.

In differential and parallel measurement modes, opening SDS acts simultaneously on BOTH THE Hi AND Lo Q-RPTs (see Section 3.3.8.1). The Pmax! pressure is the Lo RPT. Be sure to check BOTH Q-RPT TEST(+) ports are at a safe pressure before opening SDS.

The [SDS] key is also the [2] key which is pressed to select <2Yes> to OPEN SDS. Thus, SDS can be OPENED by two rapid presses of [SDS]. Use this feature to conveniently OPEN SDS but always check that the pressure connected the TEST(+) port does NOT exceed Pmax! before doing so.

When changing ranges causes a change of active Q-RPT, SDS is automatically CLOSED for the Q-RPT that is being changed from, leaving the inactive Q-RPT with SDS CLOSED.

The Lo and Hi Q-RPTs’ SDS, if present, can be controlled directly regardless of which Q-RPT is currently active (see Section 3.5.4).

SDS can be permanently opened so operation is as if SDS were not present (see Section 3.5.4.2).

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