DPM2AS-BL【PDF 1/4 页】LCD 8.25MM UNIV MINI METR BK LIT

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DPM 2AS-BL

3? Digit Backlit LCD Voltmeter Module

PRODUCT DESCRIPTION

The DPM 2AS-BL features a 200mV d.c. measurement range with auto-zero and auto-polarity. Decimal points are user

selectable. The DPM 2AS-BL features a negative rail generator which enables the meter to measure a signal referenced

to its own power supply GND. LED backlighting ensures excellent readability under low light conditions. The design

of the panel meter's housing allows the module to be easily snapped into a panel. The module's low cost means it will

suit high and low volume applications. The DPM 2AS-BL is intended to replace the DPM 2, DPM 2S, DPM 2-BL and

DPM 2S-BL in many applications, usually requiring only minor circuit modifications.

FEATURES

? 8.25 mm (0.32") Digit Height

? 200mV d.c. Full Scale Reading

? 3.0 to 7.5V or 6.0 to 15.0V Operation

? Auto-zero and Auto-polarity

? Programmable Decimal Points

? LED Backlighting

TYPICAL APPLICATIONS

? Precision Instrumentation Systems

? Power Supply Monitoring

? Hand held instruments

? Panel-Mount Indication

? Low Power Voltage Measurement

ELECTRICAL SPECIFICATIONS

ORDERING INFORMATION

Stock Number

Standard Meter DPM 2AS-BL

Specification Min. Typ. Max.

Accuracy (overall error) * 0.1

Linearity ±1

Sample rate 2.5

Operating temperature range 0 50

Temperature stability 250

Meter supply voltage V+ to GND configuration 3.0 5.0 7.5

V+ to V- configuration 6.0 9.0 15.0**

Meter supply current V+ to GND configuration 350

V+ to V- configuration 175

Backlight supply voltage 4.75 5.0 ***

Backlight supply current @ 5V d.c. 15 30****

Input leakage current (Vin = 0V) 1 10

Unit

% (±1 count)

count

samples/sec

°C

ppm/°C

V d.c.

μ A

V d.c.

* To ensure maximum accuracy, re-calibrate periodically.

** Operation of the meter beyond the maximum supply voltage rating may cause permanent damage to the meter.

*** An external series resistor is required above 5V, see Applications.

**** This specification linearly derates to 20mA @ 50°C.

Unless otherwise noted, specifications apply at T A =25°C, V supply =5Vd.c. (f clock =48kHz) and are tested with the module configured for single ended

input mode.

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).

www.martelmeters.com

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