7555

 

 

Yokogawa Model 7555 High Accuracy Digital Multimeter (discontinued)

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7555

Characteristics:

  • 5 1/2-digit display “199999”
  • High speed sampling 125 times/second
  • Complete communication functions
    Standard provision of RS-232-C, and optional addition of GP-IB
    Large current measurement
  • DC 200 A, AC 150 A (for current clamp use)
  • Simple scanner for multiple point measurement (optional)
  • BCD output & D/A output functions (optional)
    Measurement items:
    DCV, ACV, ohms2W, ohms4W, DCA, and ACA.
  • Measures large currents up to 200 A.
    Current measurement using a current clamp (751106)
  • Simple scanner (optional)
    Multi-point DCV measurement (up to 8 channels) With photo MOS relay, and a removable scanner terminal block to simplify wiring
  • BCD output (optional)
    Measurement data (including decimal point, unit, polarity and over-range) are output in parallel form.
    Combine the instrument with a programmable controller,to fit your production line.
  • D/A output (optional)
    Any three-digit number in a row of the displayed data can be outputted in analog with ±1V full scale.

Product Description:

Equipped with communications functions, and offering additional functions, such as a simple scanner function and a BCD output function, the 7555 multimeter is applicable to both bench and production line use.
The multimeter’s memory can store up to 2000 measured data items and ten types of setup information.

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General Specifications :

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Range
 90days, 23±5°C
1 year, 23±5°C
 Temperature Coefficient
(5 to 18, 2 to 40°C)
200 mV
2000 mV
20 V
200 V
1000 V		 0.009+8(6)
0.006+3(5)
0.0012+4(6)
0.011+3(5)
0.013+3(5)		 0.012+8(6)
0.009+3(5)
0.02+4(6)
0.019+3(5)
0.021+3(5)		 0.0011+1 (0.4)
0.0009+0.5 (0.3)
0.0012+0.5 (0.3)
0.0012+0.5 (0.3)
0.0015+0.5 (0.3)

DC Current Accuracy: ±(% of reading + digits)

Range
Sampling SLOW / MID2 / MID1
Sampling FAST
 1 yr, 23±5°C
Accuracy
Max. rdg. Res. Max. rdg. Res.
2000 mA
20 mA
200 mA
2000 mA		 1999.99
19.9999
199.999
1999.99		 10 nA
100 nA
1 µA
10 µA		 1999.9
19.999
199.99
1999.9		 100 nA
1 µA
10 µA
100 µA		 0.06 +100(100)
0.06 + 20(20)
0.12 + 80(20)
0.12 + 40(40)

AC Voltage Accuracy: ±(% of reading + digits)

Range
20 to 30Hz
30 to 45Hz
45 Hz to 10kHz
10 to 20 kHz
 20 to 50 kHz 50 to 100 kHz
200 mV
2000 mV
20 V
200 V
700 V		 0.9+250
0.8+100
0.8+100
1+100
1+100		 0.5+250
0.4+100
0.4+100
0.4+100
0.4+100		 0.4+250
0.2+100
0.2+100
0.3+100
0.4+100		 0.5+300
0.4+200
0.4+200
0.4+200
0.6+300		 0.8+500
0.6+500
0.6+500
0.8+500		 2+500
2+500
2+500
3+500

AC Current Accuracy: ±(% of reading + digits)

Range
20 to 30Hz
30 to 45Hz
45Hz to 2kHz
2 to 5kHz
2 mA
20 mA
200 mA
2000 mA		 1.5+350
1.3+300
1.3+300
1.5+300		 0.8+300
0.8+200
0.8+300
1.5+200		 0.5+300
0.5+200
0.5+300
1+200		 0.8+300
0.8+200
0.8+300
1.5+200

Resistance (4-wire system): ±(% of reading + digits)

Range
 90days, 23±5°C
1 year, 23±5°C
 Temperature Coefficient
(5 to 18, 2 to 40°C)
200 Ω
2000 Ω
20 kΩ
200 kΩ
2000 kΩ
20 MΩ
200 MΩ		 0.015+7(6)
0.012+6(5)
0.012+5(5)
0.013+5(5)
0.05+20(30)
0.25+30
2+20		 0.019+7(6)
0.016+6(5)
0.016+5(5)
0.017+5(5)
0.05+20(30)
0.25+30
2+20		 0.0021+1(1.5)
0.0016+1(0.4)
0.0016+1(0.4)
0.0016+1(0.4)
0.005+1(0.4)
0.02+3
0.05+5

 

  • Communication Functions
    • * RS-232-C interface (standard provision)
    • Transmission method: Start-stop synchronization
    • Transmission speed: 75, 150, 300, 600, 1200, 2400, 4800, 9600 bits/s
    • Handshake mode, baud rate, number of bits, and header can be set to ON or OFF.
  • * GP-IB interface (option)
    Electrical and mechanical specifications:

    • Conforms to IEEE ST’d 488-1978
    • (Conforms to IEEE ST’d 488.2-1987)
    • Functional specifications: SH1, AH1, T5, L4, SR1, RL1, PP0, DC1, DT1, C0C
    • Address mode, address, and header can be set to ON or OFF.
  • Operating principle: feedback pulse width modulation method
  • Sample mode: Auto/Single
  • Sampling rate: Four modes of SLOW, MID2, MID1, and FAST are available.
  • Maximum reading: 199999
  • Over-range information: -oL- sign display
  • Data memory: Up to 2000 items of measurement data and also 10 kinds of setup information can be saved.
  • Operating temperature: 5 to 40°C
  • Humidity: 20 to 80% RH
  • Power requirements: 100 V AC (90 to 110 V AC),
    120 V AC (108 to 132 V AC)
    230 V AC (207 to 253 V AC)
    50 or 60 Hz

pdf_pic Downloads:General Specifications

 

 

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