Digit Voltmeter Module uses latest miniaturisation techniques pro
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Digit Voltmeter Module
uses latest miniaturisation techniques produce very compact digit voltmeter. designed drop-in component most medium high volume applications, ranging from personal instrumentation integral sensor indicators measurement probes. meter features digit height, decimal points, auto-polarity, auto-zero, 200mV full scale reading very current consumption. Connection module dual line rows pins.
FEATURES
(0.31") Digit Height 200mV d.c. Full Scale Reading 150µA Operation Auto-zero Auto-polarity Selectable Decimal Points Very Compact Design
TYPICAL APPLICATIONS
Personal Monitoring Medical Instruments Measurement Probes Hand held instruments
ORDERING INFORMATION
Standard Meter Stock Number
ELECTRICAL SPECIFICATIONS
Specification
Accuracy (overall error) Linearity Sample rate Operating temperature range Temperature stability Supply voltage Supply current Input leakage current (Vin
Min.
Typ.
Max.
14**
count) count samples/sec ppm/°C d.c.
Unit
ensure maximum accuracy, re-calibrate periodically. Operation meter beyond maximum supply voltage rating cause permanent damage meter. Unless otherwise noted, specifications apply TA=25°C, Vsupply=5Vd.c. (fclock=48kHz) tested with module configured floating input mode.
SAFETY
comply with Voltage Directive (LVD 93/68/EEC), input voltages module's pins must exceed 60Vdc. user must ensure that incorporation panel meter into user's equipment conforms relevant sections 61010 (Safety Requirements Electrical Equipment Measuring, Control Laboratory Use).
LASCAR ELECTRONICS LTD. MODULE HOUSE WHITEPARISH WILTSHIRE TEL: (1794) 884567 FAX: (1794) 884616 E-mail: sales@lascar.co.uk LASCAR ELECTRONICS INC. 3750 West 26th Street Erie 16506 TEL: (814) 0621 FAX: (814) 8141 E-mail: us-sales@lascarelectronics.com LASCAR ELECTRONICS (HK) LIMITED FLAT 5/FL., LUCKY FTY. BLDG. 63-65 HUNG ROAD KWUN TONG KOWLOON HONG KONG TEL: +852 2797 3219 FAX: +852 2343 6187 E-mail: b4lascar@samsongroup.com.hk
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DIMENSIONS
dimensions (inches) 23.4 (0.92) +0.2(0.01) 13.4 (0.53) 16.4 (0.65) +0.4(0.02) (0.21)
Digit Voltmeter Module
1.27 (0.05) 6.35 (0.25) 12.7 (0.50) 2.54 (0.10) (rear view)
17.8 (0.70) (0.22) (0.20)
FUNCTIONAL BLOCK DIAGRAM
CONFIGURATION
(0.22)
Vref
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CIRCUIT DIAGRAM
Digit Voltmeter Module
FUNCTIONS
Negative power supply meter. Positive power supply meter. Positive measuring input. must closer than 1.6V either positive negative supply, when using internal 100mV reference. Negative measuring input. must closer than 1.6V either positive negative supply, when using internal 100mV reference. Ground analogue section converter. actively held 3.05V (nom.) below must allowed sink excessive current (>100mA) instance, connecting higher voltage. Negative input reference voltage. Positive input reference voltage. connect. Connect display (199.9). Connect display (19.99). Connect display (1.999). Connect DP1, display required decimal points.
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SCALING
resistors used alter full scale reading (FSR) meter table. meter will have recalibrated adjusting calibration potentiometer rear module.
200V 2000V* 200µA 20mA 200mA 910k 100k 100R 100R
Digit Voltmeter Module
Voltage Current
*Ensure that rated high voltage use.
APPLICATIONS
connect more than meter same power supply meters cannot same signal ground. Taking input beyond power supply rails will damage meter.
±200mV
±200mV
510K
1.6V min.
SUPPLY VOLTAGE
510K
Measuring floating voltage source 200mV full scale.
Split supply operation.
Measuring supply voltage. (min. 7.5V, max. 14V).
100K
ZERO
R=0.2 IFSR
IOUT
Measuring current. Supply MUST isolated.
Measuring 4-20mA read 0-999. Supply MUST isolated.
Specifications liable change without prior warning
Issue
September/2002
M.C.
Applies 1B/3
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