Crown Electronic Systems

Digital Micro Ohm Meter

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“CROWN” made DIGITAL MICRO OHM METER is a compact high reliability 3 ½ digit instrument suitable for measurement of resistivity of copper wires from 70 SWG to 50 SWG resistance of cables , windings , coils , heater elements & contact resistance of switches , relays etc. Emphasis in the design of this instrument has been to provide quick , stable & repeatable readings of resistance . The instrument uses 4 terminal measurement so that resistance of test leads & contacts in eliminated from test results . Actual value of resistor is directly displayed on seven segment 12.5mm display .

 SPECIFICATION :

RANGE OF MEASUREMENT       :           1 micro ohm to 19.99 K Ohm in eight ranges

     RANGE                                  NOMINAL TEST CURRENT                    ACCURACY

0 - 1999 µ Ohm                                    1.50A                                                   ± 0.3% + 2 Digits
0 - 19.99 m Ohm                                  0.75A                                                   ± 0.2% + 2 Digits
0 - 199.9 m Ohm                                  0.75A                                                   ± 0.2% + 2 Digits
0 - 1.999 Ohm                                      75mA                                                   ± 0.2% + 2 Digits
0 - 19.99 Ohm                                      7.5mA                                                  ± 0.2% + 2 Digits
0 - 199.9 Ohm                                      0.75mA                                                ± 0.2% + 2 Digits
0 - 1999 Ohm                                       0.07mA                                                ± 0.2% + 2 Digits
0 - 19.99 K Ohm                                  0.075mA                                              ± 0.2% + 2 Digits


WARMUP Time for rated accuracy = 3 min.

INPUT VOLTAGE                            :           230V AC  ± 10% 10W Approx.

OVER RANGE                                 :           Three most significant digit blank & ‘1’ appears

Digital Milli Ohm Meter

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“CROWN” made DIGITAL MILLI OHM METER is useful for accurate measurement of low resistance of copper wire conductors , cables , coil , heater element , contact resistance of switch relays etc. Four terminal measurement system ensures error free reading without effect of test lead resistance.

SPECIFICATION :

RANGE                                      :        0.1 mill Ohm to 199.9K Ohm in 7 Range

            RANGE                                              TEST CURRENT

            0 - 199.9 m Ohm                                           1A
            0 - 1.999     Ohm                                           100 mA
            0 - 19.99     Ohm                                           10 mA
            0 - 199.9     Ohm                                           1 mA
            0 - 1.999 K Ohm                                            100 mA
            0 - 19.99 K Ohm                                            10 mA
            0 - 199.9 K Ohm                                            1 mA


ACCURACY                                      :           ±0.2% ± 2 Digit

RESOLUTION                                   :           1 In 1999 Count

DISPLAY                                            :           3 ½ Digit 12.5 mm Height LED

POWER                                             :           230V AC ± 10%

High Voltage DC Regulated Power Supply

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SPECIFICATION:

                        OUTPUT VOLTAGE                     CURRENT (MAX)
                            0 - 300V                                        5A
                            0 - 300V                                        2A
                            0 - 300V                                        1A
                                 
                                                   
INPUT VOLTAGE          :    230V ± 10% AC 50Hz

OUTPUT VOLTAGE       :    Continuously Variable with Coarse & Fine Control

LOAD REGULATION     :    Settable with Coarse & Fine Control


OUTPUT CURRENT       :     ± 0.05% From load to full load

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Dual Output DC Regulated Power Supply

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  "CROWN" made Dual Output DC Regulated Power Supply are constant Voltage & Current limit type supplies, have high regulation for Load & line Voltage variation. The supply can be use in independent & current tracking made. The supply are protected against short circuit & over load. The output current can be limited to any value from 0 to maximum.

SPECIFICATION  :

                         OUTPUT VOLTAGE                                      CURRENT (MAX)
                                 0 - + 30V                                                          10A
                                 0 - + 30V                                                           5A
                                 0 - + 30V                                                           2A
                                 0 - + 30V                                                           1A
                                 0 - + 60V                                                           1A
                                 0 - + 60V                                                           2A
                                 0 - + 60V                                                           5A

INPUT VOLTAGE              :   230V + 10% AC 50 Hz
LOAD REGULATION        :   + 0.05 % From no load to full load
LINE REGULATION          :   + 0.01 % for + 10% variation input voltage
OPERATING MODE         :   Independent & Tracking mode.
RIPPLE                             :   Less than 1mV
METER                             :   Four Digital meters to monitor the output voltage & current of A & 
                                             B supply
PROTECTION                  :    Against Short circuit & overload.

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DC Regulated Power Supply 0-30V/10A

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SPECIFICATION :-

INPUT VOLTAGE               :        230V  ± 10% AC 50 Hz

OUTPUT VOLTAGE            :       0 - 30V DC Continuously Variable with Coarse & Fine Control

OUTPUT CURRENT             :       0 - 10A Settable with Coarse & Fine Control

LOAD REGULATION (CV)  :       ± 0.05 % ± 3mV From no load to full load
LOAD REGULATION (CC)  :       + 0.05% + 1mA From no load to full load

LINE REGULATION (CV)    :       ± 0.01 % ± 3mV for +10% variation input voltage
LINE REGULATION (CC)    :       + 0.01%  + 1mA for +10% variation input voltage

RIPPLE                               :        Less than 1 mV

METER                              :       Two Digital meters to monitor the output voltage & current

INDICATION                       :        LED FOR CV & CC Operating Mode

PROTECTION                     :        Against short circuit & over load

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