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INNOVATION and EXCELLENCE
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Range Change Kit
For DM-3000 and DM-4000 Series Panel Meters
PANEL METER RANGE CHANGE KIT
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 200A There is one exception: 41/2 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.
DATEL, Inc., Mansfield, MA 02048 (USA) * Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 * Email: sales@datel.com * 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 20V 200V 200mA 20mA 2mA 200A MODIFICATION 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 DM-3100N DM-3100Ul DM-3100U2 DM-3100U3 DM-3101 DM-3100B DM-3104 DM-3100L DM-3103 DM-3100X 200mV RANGE MODIFICATION C3=0.47F C3=0.47F C3=0.47F C3=0.47F C3=0.47F C3=0.47F C3=0.47F C3=0.47F C3=0.47F C3=0.47F C4=l.0F C4=l.0F C4=l.0F C4=l.0F C4=l.0F C4=l.0F C4=l.0F C4=l.0F C4=l.0F C4=l.0F 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
RN-3100/-4100
DATEL P/N: DM-3100L/3103
SG1 located on component side of PC board
5
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
RN-3100/-4100
DATEL P/N: DM-3100X
SG1 located on non-component side of PC board
9
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
RN-3100/-4100
DATEL P/N: DM-4101L
SG1 located on non-component side of PC board
13
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
DWG NO. 17619 Rev. A
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 Internet: www.datel.com Email: sales@datel.com Data sheet fax back: (508) 261-2857
DATEL (UK) LTD. Tadley, England Tel: (01256)-880444 DATEL S.A.R.L. Montigny Le Bretonneux, France Tel: 01-34-60-01-01 DATEL GmbH Munchen, Germany Tel: 89-544334-0 DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-354-2025
DATEL 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. The DATEL logo is a registered DATEL, Inc. trademark.

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