SP400【PDF 1/4 页】LCD DPM 200MV 3.5 DIGIT

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SP 400

3? Digit Backlit LCD Voltmeter Module

PRODUCT DESCRIPTION

The SP 400 features a 200mV d.c. measurement range with auto-zero and auto-polarity. Decimal points are user selectable. The SP

400 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 module is easily fitted into the panel, using the fixing clip

provided. The module's low cost means it will suit high and low volume applications. The design of the panel meter's housing ensures

splash proofing using the supplied seal.

FEATURES

? 9.75mm (0.38") 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

? Low Battery Warning

? Splash Proof

TYPICAL APPLICATIONS

ORDERING INFORMATION

? Precision Instrumentation Systems

? Power Supply Monitoring

? Test Boxes

? Panel-Mount Indication

? Low Power Voltage Measurement

ELECTRICAL SPECIFICATIONS

Standard Meter

Stock Number

SP 400

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

100

°C

ppm/°C

Supply voltage V+

V+

Supply current V+

V+

GND

V-

GND

V-

configuration

3.0

6.0

5.0

9.0

350

175

7.5

15.0**

V d.c.

μ A

Backlight supply voltage

Backlight supply current @ 5V d.c.

Input leakage current (Vin = 0V)

4.75

5.0

***

80****

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 50mA @ 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).

LASCAR ELECTRONICS LTD.

MODULE HOUSE

WHITEPARISH

WILTSHIRE SP5 2SJ

LASCAR ELECTRONICS INC.

3750 WEST 26th STREET

ERIE

PA 16506

USA

LASCAR ELECTRONICS (HK) LIMITED

FLAT C, 5/FL., LUCKY FTY. BLDG.

63-65 HUNG TO ROAD

KWUN TONG KOWLOON

HONG KONG

PO Box 770, Londonderry, NH 03053 1-800-821-0023

www.martelcorp.com

TEL: +44 (1794) 884567

FAX: +44 (1794) 884616

E-mail: sales@lascar.co.uk

TEL: +1 (814) 835 0621 TEL: +852 2797 3219

FAX: +1 (814) 838 8141 FAX: +852 2343 6187

E-mail: us-sales@lascarelectronics.com E-mail: b4lascar@samsongroup.com.hk

www.lascarelectronics.com

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