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DPM 750S-BL
3? Digit Backlit LCD Voltmeter Module
The DPM 750S-BL features a 200mV d.c. measurement range with auto-zero and auto-polarity. Decimal points are
user selectable. The meter features a negative rail generator which enables the meter to measure a signal referenced to
its own power supply GND. A low drift bandgap reference circuit ensures accurate readings over a wide temperature
range. LED backlighting ensures excellent readability under low light conditions. The module's low cost means it will
suit high and low volume applications. This module is supplied with a plastic mounting bezel. A waterproof seal to
IP67 / NEMA 4X is achievable, using the optional BEZ 700-IP bezel.
FEATURES
? 12.7 mm (0.5") Digit Height
? 200mV d.c. Full Scale Reading
? 3.0 to 7.5V or 6.0 to 15V d.c. Operation
? Auto-zero and Auto-polarity
? Programmable Decimal Points
? LED Backlighting (30mA @ 5V typ.)
? Low Battery Warning
? Bandgap Reference
TYPICAL APPLICATIONS
? Precision Instrumentation Systems
ORDERING INFORMATION
° C ° F
μ A
mV
k ?
MH z
Stock Number
? Power Supply Monitoring
? Test Boxes
? Panel-Mount Indication
? Low Power Voltage Measurement
ELECTRICAL SPECIFICATIONS
Standard Meter
IP67 / NEMA 4X Bezel
DPM 750S-BL
BEZ 700-IP
Specification
Min.
Typ.
Max.
Unit
Accuracy (overall error) *
Linearity
Sample rate
0.1
2.5
±1
% (±1 count)
count
samples/sec
Operating temperature range
Temperature stability
0
50
50
°C
ppm/°C
Supply voltage V+
V+
Supply current V+
V+
to
to
to
to
GND
V-
GND
V-
configuration
configuration
configuration
configuration
3
6
5
9
500
350
7.5
15
V d.c.
V d.c.
μ A
μ A
Backlight supply voltage
Backlight supply current @ 5V d.c.
Input leakage current (Vin = 0V)
4.75
5.0
30
1
**
50 ***
10
V d.c.
mA
pA
* To ensure maximum accuracy, re-calibrate periodically.
** An external series resistor is required above 5V, see Applications.
*** This specification linearly derates to 30mA @ 50°C.
SAFETY
To comply with the Low Voltage Directive (LVD 93/68/EEC), input voltages to the module’s pins must not exceed
60Vdc. The user must ensure that the incorporation of the panel meter into the user ’s equipment conforms to the
relevant sections of BS EN 61010 (Safety Requirements for Electrical Equipment for Measuring, Control and
Laboratory Use).
LASCAR ELECTRONICS LTD.
MODULE HOUSE
WHITEPARISH
WILTSHIRE SP5 2SJ
UK
TEL: +44 (1794) 884567
FAX: +44 (1794) 884616
E-mail: sales@lascar.co.uk
LASCAR ELECTRONICS INC.
3750 West 26th Street
Erie
PA 16506
USA
TEL: +1 (814) 835 0621
FAX: +1 (814) 838 8141
E-mail: us-sales@lascarelectronics.com
LASCAR ELECTRONICS (HK) LIMITED
FLAT C, 5/FL., LUCKY FTY. BLDG.
63-65 HUNG TO ROAD
KWUN TONG KOWLOON
HONG KONG
TEL: +852 2797 3219
FAX: +852 2343 6187
E-mail: b4lascar@samsongroup.com.hk
www.martelcorp.com
Page of 4
PO Box 770, Londonderry, NH 03053 1-800-821-0023
www.lascarelectronics.com Page 1 of 4
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