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Digital Meter

Recording Printer


  • ■ It is capable of dealing with input 2CH, 5 types of analog signals and 7 types of thermal sensors.
  • ■ It can print measurement data and trend graphs.
  • ■ It can store 2,000 data on each channel and printing for each channel is also possible.
  • ■ Comparing with input value and calculated value, it can give comparative judgement output of 3 point.
  • ■ Compact and inexpensive 2CH recorder.

Operation manual

Standard Specifications

Model Designation

442D - -


DC voltage and current (2ch. in common)
Code Measuring range Input resistance Over load
03 DC 0 to 1 V 1 MΩ DC ±250 V
04 DC 0 to 5 V
05 DC 0 to 10 V
09 DC 1 to 5 V
19 DC 4 to 20 mA 12.5 Ω DC ±150 mA
Thermocouple (2ch. in common)
Code Sensor Measuring range Display range
R 100 to 1700°C -50 to 1750°C
K -100 to 1300°C -200 to 1350°C
E -130 to 1000°C -250 to 1050°C
J -140 to 1200°C -200 to 1250°C
T -200 to 400°C -250 to 420°C
B 600 to 1800°C -20 to 1802°C
RTD (2 ch. in common)
Code Sensor Measuring range Display range
P Pt100Ω -200.0 to 850.0°C -200.0 to 870.0°C

②Power Supply

Code Power supply
A AC 100 to 240 V
9 DC 24 V ± 10%

General Specifications

Measurement Nos. of inputs 2 points (A, B)
DC Display 0 to 9999, with zero suppress function
Scaling Full scale & Offset -9999 to +9999
Over range display Flashing at 130% of input Flashing when more than 9999.
Temp. External resistance Thermocouple:less than 500 Ω, RTD:less than 5 Ω/wire
Over load DC ±10 V
Resolution 1°C(Thermocouple), 0.1°C(RTD)
Over range display Flashing at minimum value or maximum value display when display range is over.
Sampling cycle 500ms
Input configuration Single ended, floating input
A/D Conversion ⊿-∑ conversion system
Display cycle 500ms
Display switching date(year/month/date), time(hour/minute/second), A, B, Y(A+B or A-B) can be selected.
Comparison Comparative digit 4 digits, polarity 1 digit
Comparison method 3 independent setting, upper and lower limit optional setting are possible.
Setting comparison with A, B and Y is optionally possible.
CPU comparison method, compares with the displayed value.
Hysterisis width 1 to 999(3 pts. common)
Output AL1, AL2, AL3 Open collector output (NPN) 30 V DC, 30 mA Max.  Saturation voltage less than 1.6 V DC
Print Interval printing 0.5s / 1s / 2s / 5s / 10s / 30s / 1min / 5min / 10min / 30min / 1h
Memorable number during trend printing: 2,000 data (each A, B)
Memory printing Memory interval:
0.5s / 1s / 2s / 5s / 10s / 30s / 1min / 5min / 10min / 30min / 1h
Memorable number: 2,000 data (each A, B)
Print style Thermal line dot.
Printing speed 7.5 mm/s, 2 lines/s
Printing width 46 mm
Paper feeding pitch 3 mm
58 mm width x 48φ (Inside diameter 12φ)
Length 25 m (Approx. 8300 lines printable)
Use specified chart paper, otherwise printing quality and products lifetime will be out of warrantee.
Computation Y = A + B, Y = A - B, AVE, MAX, MIN, MID
Control input Printing operation・・・START, STOP, PRINT
Clock adjustment・・・ADJ
Dry contact or Open collector (NPN) input, 5 V DC 10 mA
Control output STATUS Open collector output (NPN) 30 V DC, 30 mA Max.
Saturation voltage less than 1.6 V DC
Clock Accuracy ±3s
A leap year adjustment Automatic adjustment till 2099
Power failure measure Recorded data and set value is kept to memorize.
Calendar clock works. (Battery life approx. 10 years)
Power Supply AC 100 to 240 V 50/60 Hz DC 24 V ± 10%
Power Range AC 90 to 250 V  DC 21.6 to 26.4 V
Power Consumption AC 100 V:13 VA, AC 200 V:18 VA
DC 24 V:500 mA
Operating Temperature 0 to 50°C
Storage Temperature -20 to 60°C
Weight Approx. 700 g
Installation Panel mounting
Withstand Voltage
Input/Output – Power:
1500 V AC at 1min. (at AC powered)
500 V AC at 1min. (at DC powered)
Insulation Resistance
Input/Output – Power:
500 V DC, More than 50 MΩ (at AC powered)
500 V DC, More than 50 MΩ (at DC powered)

Printing example

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