DMS-20RM Series
True-rms ac Voltmeters with Isolated Inputs
Panel Installation
All connections to DMS-20RM ac voltmeters must be made after the meter
is securely attached to the panel, with all associated ac supply power
sources de-energized (off). The installed wire positions should be such that
minimal forces are applied to terminal blocks TB1 and TB2. In high-vibration
environments, proper strain reliefs must be used for all wiring.
To ensure a secure panel-mount installation, MPS recommends using the
DMS-BZL4-C bezel assembly (with sealing gasket) supplied with each DMS-
20RM voltmeter. See the ‘Mechanical Speci?cations’ section for detailed
cutout and voltmeter dimensions.
Following the four-step sequence shown in Figure 3 — being careful not to
apply excessive force or twisting motions — insert the DMS-20RM into the
panel opening. When using the DMS-BZL4-C, install its sealing gasket so it
is positioned between the voltmeter’s front ?ange and panel front surface
(see Mechanical Speci?cations). Be sure to use and securely tighten all four
screws supplied with the bezel assembly.
Step 1.
Step 2.
Step 3.
Step 4.
Figure 3. Panel Installation
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mans?eld, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Speci?cations are subject to change without
notice. ? 2013 Murata Power Solutions, Inc.
www.murata-ps.com/locations
email: sales@murata-ps.com
MPM_DMS-20RM.A06 Page 4 of 4
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