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DMS-EB-AC/DC

100-264Vac Power Supply Accessory Board for DMS-30PC/LCD Panel Meters

DATEL Data Acquisition products  

DMS-EB-AC/DC

100-264Vac POWER SUPPLY BOARD FOR DMS-30 METERS

Applications

4. DC Current Measurements (Use +/-200mV Range DMS-30-0 Meters):

When using R2 location for a dc current-shunt, please note that the pc-

board copper traces which short out R1 can only carry currents up to

0.2A (200mA). However, dc currents up to 2A can be accommodated if a

20AWG jumper wire is soldered in location R1. Be sure R2 has a

sufficient power rating to safely carry the full load current. Refer to DMS

Application Note 6 for more information on dc ammeters.

1. Install R2: R2 = FSR / (IMAX . x 10000) where FSR is the desired meter

reading (0 up to 1999, disregarding any decimal points), and IMAX is

current in Amperes.

2. Configure the DMS-EB for span adjust using the procedure previously

outlined for the DMS-30-0 (+/-200mV range).

3. Apply the input signal (current) to TB1 (+) HI and (–) LO.

4. Adjust R4 for desired full scale readings.

5. Enable the appropriate decimal point using SG1, SG2, or SG3.

Example

Using a DMS-30-0 meter, a 0.100 Ampere input must read “100.0” mA on

the display.

R2 = 1000 / (0.1 x 10000)

R2 = 1 Ohm

Enable DP3 via SG3 for a display reading of “100.0”.

12

SG10

R5

SG14

SG7

SG8

SG4 DP4

SG13

SG6 TB1

R4

SG12

SG11

R3

SG9

1

2

HI(+) LO(–)

Figure 3. R4 and R5 Installation

R1

12

R2

SG14

SG7

SG8

SG4 DP4

SG13

SG6 TB1

SG11

R3

SG12

SG9

1

2

HI(+) LO(–)

Figure 4. R1 and R2 Installation

®

®

ISO 9001

REGISTERED

www.datel.com

DS-0341B 09/02

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

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 München, Germany Tel: 89-544334-0

DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-6354-2025

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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