Range Change Kit - Murata Power Solutions

Range Change Kit
For DM-3000 and DM-4000
Series Panel Meters
OBSOLETE PRODUCT
PANEL METER RANGE CHANGE KIT
Contact Factory for Replacement Model
Part No. RN-3100/4100
PURPOSE
This kit contains all the components necessary to modify DATEL panel meters such that they accept signal inputs
other than the standard ±2.0V range. This kit will modify the following panel meter models:
DM-3100N-1
DM-3100Ul-1
DM-3100U2-1
DM-3100U3-1
DM-31003-1
DM-3101-1
DM-3100B-1
DM-3100L-1
DM-3100X -1
DM-3104 -1
DM-4100D-1
DM-4101D-1
DM-4101N-1
DM-4105-1
DM-4200-1
DM-410lL-1
Using the components in this kit, these panel meter models can be modified to accept any one of the following
signal ranges:
±200mVdc
±20Vdc
±200Vdc
±200mA
±20mA
±2mA
±200µA
There is one exception: 4½ DIGIT PANEL METERS (ANY OF THE MODELS WHOSE SUFFIX BEGINS
WITH A “4”) CANNOT BE MODIFIED FOR THE ±200mV RANGE.
MAKING THE MODIFICATION
Making a range change modification is a relatively simply procedure, however, familiarity with proper soldering
techniques is required. When handling the panel meter printed circuit boards, care should be taken to avoid a discharge of static electricity which could damage the meter’s sensitive CMOS circuits. A grounding wrist strap should
be worn when handling the PC boards.
To make a range change modification, follow these steps:
1. Locate your panel meter model and the desired range in the tables below. Note that the 200mV range is the only
range which requires different components depending on the meter model.
www.murata-ps.com
enquiries
email: [email protected],
tel: +1 508 339 3000
DATEL, Inc., Mansfield, MA 02048 (USA) • Tel: (508)339-3000,
(800)233-2765 Fax: (508)339-6356Technical
• Email:
[email protected]
• Internet: www.datel.com
RN-3100/-4100
PA N E L M E T E R R A N G E C H A N G E K I T
TABLE 1: RANGE CHANGE MODIFICATIONS APPLICABLE TO ALL MODELS
RANGE
MODIFICATION
20V
200V
200mA
20mA
2mA
200µA
R1=4.22M
R1=4.22M
R2=10
R2=100
R2=1K
R2=10K
R2=464K
R2=42.2K
SGl=OPEN*
SGl=OPEN*
*For DM-4105/4106, Open SG4 (Leave SGl Closed).
TABLE 2: 200mV RANGE CHANGE MODIFICATIONS
MODEL
200mV RANGE MODIFICATION
DM-3100N
DM-3100Ul
DM-3100U2
DM-3100U3
DM-3101
DM-3100B
DM-3104
DM-3100L
DM-3103
DM-3100X
C3=0.47µF
C3=0.47µF
C3=0.47µF
C3=0.47µF
C3=0.47µF
C3=0.47µF
C3=0.47µF
C3=0.47µF
C3=0.47µF
C3=0.47µF
C4=l.0µF
C4=l.0µF
C4=l.0µF
C4=l.0µF
C4=l.0µF
C4=l.0µF
C4=l.0µF
C4=l.0µF
C4=l.0µF
C4=l.0µF
R5=46.4K
R5=46.4K
R5=46.4K
R5=46.4K
R5=46.4K
R7=46.4K
R7=46.4K
R5=46.4K
R5=46.4K
R5=46.4K
R7=6.65K
R7=6.65K
R7=6.65K
R7=6.65K
R7=6.65K
R9=6.65K
R9=6.65K
R7=6.65K
R7=6.65K
R7=6.65K
R8=50 pot.
R8=50 pot.
R8=50 pot.
R8=50 pot.
R8=50 pot.
R10=50 pot.
R10=50 pot.
R8=50 pot.
R8=50 pot.
R8=50 pot.
R9=75
R9=75
R9=75
R9=75
R9=75
Rll=75
Rll=75
R9=75
R9=75
R9=75
2) Locate the loose components in this kit which will be required to change your particular meter to the desired range.
In the tables above, components prefaced with "C" are capacitors, resistors are listed with an "R" followed by the
resistance value in Ohms, and potentiometers are indicated by the abbreviation "pot". Solder gaps are denoted by
"SG".
3) Open the meter’s case to gain access to the printed circuit board. Low profile models are opened by snapping off the
rear panel, using a screwdriver to carefully depress the retaining tabs located on the sides of the meter. Access to
short-depth models is achieved by removing the cotter pin at the rear of the meter, snapping off the front bezel, and
sliding the PC board forward.
4) Compare the PC board to the assembly drawing for that model as given in this document. Locate the component and
solder gap locations which pertain to the desired modification. Note that some component locations will have no
component installed. For example, Rl and R2 locations for all models do not have components installed.
5) Remove and replace components as necessary to achieve the desired modification. NOTE: WHEN MODIFYING
UNITS TO THE 200V RANGE, IT IS RECOMMENDED THAT THE OPEN SOLDER GAP SG1 BE COVERED WITH CONFORMAL COATING.
6) After reassembling the unit, you may need to recalibrate the meter. This procedure is described in each meter’s
data sheet. A generalized calibration procedure is as follows:
a) Power-on the meter and allow it to warm up for ten minutes.
b) Using a precision voltage source, provide a near full-scale positive signal to the meter’s inputs.
c) Adjust the meter’s gain potentiometer (located at the rear) until the display is correct.
d) Reverse the polarity of the signal input and check the meter’s reading.
REPAIR RETURNS
When returning a modified meter to DATEL for repair, the unit must be restored to its orignal ±2V input configuration
prior to return. Damage to the meter caused by improper modification will void the unit’s warranty.
2
RN-3100/-4100
PA N E L M E T E R R A N G E C H A N G E K I T
DATEL P/N: DM-3100B/3104
SG1 located on
component side
of PC board
4
PA N E L M E T E R R A N G E C H A N G E K I T
DATEL P/N: DM-3100L/3103
SG1 located on
component side
of PC board
5
RN-3100/-4100
RN-3100/-4100
PA N E L M E T E R R A N G E C H A N G E K I T
DATEL P/N: DM-3100N/3101
SG1 located on
component side
of PC board
6
PA N E L M E T E R R A N G E C H A N G E K I T
RN-3100/-4100
DATEL P/N: DM-3100U2/U3
SG1 located on
non-component
side of PC board
7
RN-3100/-4100
PA N E L M E T E R R A N G E C H A N G E K I T
DATEL P/N: DM-3100U1
SG1 located on
component side
of PC board
8
PA N E L M E T E R R A N G E C H A N G E K I T
DATEL P/N: DM-3100X
SG1 located on
non-component side
of PC board
9
RN-3100/-4100
RN-3100/-4100
PA N E L M E T E R R A N G E C H A N G E K I T
SG1 located on non-component
side of PC board
DATEL P/N: DM-4100D
10
PA N E L M E T E R R A N G E C H A N G E K I T
RN-3100/-4100
DATEL P/N: DM-4101N
SG1 located on
non-component side
of PC board
11
RN-3100/-4100
PA N E L M E T E R R A N G E C H A N G E K I T
DATEL P/N: DM-4101D
SG1 located on
reverse side of
board underneath
R1
12
PA N E L M E T E R R A N G E C H A N G E K I T
DATEL P/N: DM-4101L
SG1 located on
non-component side
of PC board
13
RN-3100/-4100
RN-3100/-4100
PA N E L M E T E R R A N G E C H A N G E K I T
DATEL P/N: DM-4105/4106
SG4 located on
non-component side
of PC board
14
PA N E L M E T E R R A N G E C H A N G E K I T
RN-3100/-4100
DATEL P/N: DM-4200
SG1 located on
non-component side
of PC board
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, 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. Specifications are subject to change without
notice.
© 2009 Murata Power Solutions, Inc.
www.murata-ps.com/locations
email: [email protected]