Instrumentation Amplifier

  • CE
  • TEDS



· 3 sensitivity registration modes (Actual load calibration, sensitivity-registered calibration, numerical value-registered calibration)
· Selectable 4 high/low limit patterns in memory
· Level test with desired set-value


The WGI-400A is a compact Instrumentation Amplifier which has basic functions required for measurement in combination with strain-gage transducers.

Products table

All display

Instrumentation Amplifier

  • CE
  • TEDS
Models WGI-400A-00E: AC operation with no optional function
WGI-400A-01E: AC operation with BCD output
WGI-400A-02E: AC operation with RS-232C
WGI-400A-03E: AC operation with RS-485
WGI-400A-10E: DC operation with no optional function
WGI-400A-11E: DC operation with BCD output
WGI-400A-12E: DC operation with RS-232C
WGI-400A-13E: DC operation with RS-485


Measuring Section
Channels 1
Applicable Transducers Strain-gage transducers
Compatible Bridge Resistance 87.5 to 1000 Ω (350 Ω, 4 in parallel connection)
Bridge Excitation 2 VDC (30 mA), 4 VDC (50 mA), switchable
Measuring Range ±3.2 mV/V (Including zero adjustment range)
Sampling Speed 50 times/s
Resolution 64000 counts/input range in both polarities
Calibration Functions Actual load calibration, sensitivity-registered calibration, numerical value registered calibration
Display Section
Display ±9999
Character height: 14 mm, red LED
Speed: 50 times/s
Decimal Point Put to anywhere possible
Zero Adjustment Functions Any value in the input range is set to digital zero; execution by key operation or control input signal
Smoothing Functions Minimum scale: 1, 2, 5, 10, 20, 50, and 100 counts
Moving average: 0, 2, 4, 8, 16, 32, 64, and 128 times
Auto Zero Compensation Zero tracking (Auto digital zero in the preset range)
Approximated zero compensation (Indication is made zero automatically)
Adding Functions Setting range: ±9999
Original Value Display Functions ±3.200 mV/V
Level Test Display of arbitrary values possible
Temperature Stability Zero point: Within ±0.5 μV/°C
Sensitivity: Within ±0.01%/°C
Nonlinearity Within ±(0.1% FS +1 digit)
Control Input
Points 4 (ZERO command, level test command, pattern command 1, pattern command 2)
Signal Capacity 12 VDC, 5 mA or more
Input Mode Open collector (NPN) or non-voltage contact signal
Control Output
Points 3 (HI, OK and LO)
Output Mode Open collector (NPN)
Load Capacity 30 VDC, 20 mA (Resistive load)
Pattern Functions Registers 4 groups of high/low limit values and enables switching through control signals.
High/Low Limit Comparator Points: 2 (HIGH, LOW)
Setting Range ±9999
Comparison Speed 50 times/s
Comparison Function Points: 1 (OK)
Analog Output
  Outputs either voltage or current.

[Voltage output]
  ±10V (Load resistance: 2 kΩ or more), arbitrary scaling possible
[Current output]
  4 to 20 mA (Load resistance: 500 Ω or less), arbitrary scaling possible
Response Speed Approx. 0.25 s (10% to 90%)
Nonlinearity Within ±0.1% FS
Frequency Response 1 Hz (-3 dB ±1 dB)
TEDS Function Automatic sensitivity registration (Key operation, power ON, RS control)
Power Supply [AC operation]
  100 to 240 VAC
  Power consumption: Approx. 6 VA or less

[DC operation]
  10 to 30 VDC ±10%
  Power consumption: Approx. 8 W or less
Operating Temperature -10 to 50°C
Operating Humidity 20 to 85%
Dimensions 96 W x 48 H x 144 D mm
Panel-cut Dimensions 92.2 W x 45.2 H mm
Panel thickness: 0.8 to 5.0 mm
Weight Approx. 300 g (AC operation, standard type)
Standard Accessories Instruction manual
Unit seal
Optional Accessories AC power cables
  P-23 (For 100 VAC)
  P-28 (For 200 VAC)
BCD output cable N-43
BCD output printer cable N-44


AC power cables

2-pin plug to 2 conductors, crimp-style terminal (M3)


Length Approx. 2.0 m
Object Product Model WGA-100B, 101A, 120A, 200A, 650B, 680A, 710C, 910A
Others For 100 VAC

3 round-shape terminals to 3 conductors, pre-soldering at the cable tip



Length Approx. 2.0 m
Object Product Model WGA-100B, 101A, 120A, 200A, 650B, 680A, 710C, 910A
Others For 200 VAC

Instrumentation Printer


Power Supply 442B-K01-A:100 to 240 VAC
442B-K01-D:24 VDC  24 VDC ±10%


Printing System Thermal line dot
Printing Speed Approx. 22.5 mm/s, 6 lines/s
Characters per Line 24
Calendar Clock 6-digit red LED, hour: minute: second
Characters Alphanumerics, symbols, etc.
Character Size 2 x 2 mm
Character Structure 16 x 16 dots
Print Width 46 mm
Paper Feed Pitch 3.75 mm
Print Paper 58 mm W × 25 m L
Roll diameter: 48 mm
Thermal paper: 5860-0110, 10 rolls/pack
Date-time Printed Year/month/day and hour: minute: second
Printed Channels CH00 to CH99
Printing Directions Lister or Texter (Select either when ordering.)
Interval Print 5 seconds to 99 hours 59 minutes 59 seconds.
External command or automatic print
Message 14 kinds (OVER, HIGH, LOW, GOOD, NG, etc. with BCD input)
Units Approx. 250 kinds
Input Connectors IDEC JM1S-0603
IDEC JM1S-0803
Operating Temperature/Humidity 0 to 50ºC, 85% or less (Non-condensing)
Storage Temperature –20 to 60ºC
Dimensions 96 W × 96 H x 165.5 D mm (Excluding protrusions)
Weight Approx. 700g
Standard Accessories Input cable with connector
1 paper roll
Optional Accessories AC power cable
 P-23 for 100 VAC
 P-28 for 200 VAC
Paper roll 5860-01 (10 rolls)

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