TSURUGA MODEL 481D

Scaling Meter

• ■ Full scale Display: +200 to +1999 (optional setting)
• ■ Variable offset function (-1000 to +1000)
• ■ 3 kinds of BCD data output series
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• Model Designation

• 481D

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  ①

  ②

  ③

  ④

  ⑤

  ⑥

  ①Measuring Input

  Code	Measuring Range	Input Resistance	Accuracy *	Overload
  02	±199.9 mV	100 MΩ	±(0.1% of rdg + 1 digit)	DC ±250 V
  03	±1.999 V	100 MΩ	±(0.1% of rdg + 1 digit)	DC ±250 V
  04	±19.99 V	10 MΩ	±(0.1% of rdg + 1 digit)	DC ±250 V
  05	±199.9 V	10 MΩ	±(0.1% of rdg + 1 digit)	DC ±250 V
  V2	0 to 5 V	1 MΩ	±(0.1% of rdg + 1 digit)	DC ±250 V
  V3	0 to 10 V	1 MΩ	±(0.1% of rdg + 1 digit)	DC ±250 V
  11	±19.99 µA	10 kΩ	±(0.1% of rdg + 1 digit)	DC ±2 mA
  12	±199.9 µA	1 kΩ	±(0.1% of rdg + 1 digit)	DC ± 20 mA
  13	±1.999 mA	100 Ω	±(0.1% of rdg + 1 digit)	DC ± 50 mA
  14	±19.99 mA	10 Ω	±(0.1% of rdg + 1 digit)	DC ±150 mA
  15	±199.9 mA	1 Ω	±(0.1% of rdg + 1 digit)	DC ±500 mA
  16	±1.999 A	0.1 Ω	±(0.2% of rdg + 1 digit)	DC ±3 A

       *Accuracy:

  Defined at 23 ± 5°C, 45 to 75% RH.

        Temperature coefficient:

  Defined at ±200 ppm/°C (Temp. range: 0 to 50°C)

  ②Power Supply

  Code	Power Source Voltage
  3	AC 100 V (90 to 132 V)
  5	AC 200 V (180 to 264 V)
  9	DC 24 V ± 10%

  ③Data Output

  Code	Specifications
  Blank	For display only
  BP	BCD output (TTL level positive logic)
  BN	BCD output (TTL level negative logic)
  DN	BCD output (Transistor sink type)

  ④Decimal Point

  Code	Description
  Blank	Front setting
  1	External control

  ⑤Sampling Rate

  Code	Description
  Blank	2.5 times/s fixed.
  T	2.5 to 0.2 times/s variable.

  ⑥Display Color

  Code	Description
  Blank	Red LED
  G	Green LED

  General Specifications

  Display	0 to 1999 red or green LED (character height 14.2 mm) with zero-suppress function.
  Scaling function	Full scale display +200 to +1999, Offset display -1000 to +1000.
  Decimal point	Optional (front setting or external control)
  Over-range display	Flashing with “0”
  Hold function	Holds measurement data.  (no isolation)
  Resolution	1/2000
  Sampling rate	2.5 times/s fixed or 2.5 to 0.2 times/s variable.
  Input configuration	Single ended, floating input.
  A/D conversion	Dual Slope Integration System
  Noise rejection	Normal mode (NMR)  More than 50 dB
  	Common mode (CMR)  More than 110 dB
  	Power source line mixing noise 1000 V
  BCD data output	■TTL level, Isolation Output  (BP: positive logic, BN: negative logic) Data output Parallel BCD, Latched output TTL level (CMOS-compatible), Fo=2 External output Over (Over: Logic 1) Polarity (＋: Logic 1) Synchronized signal (10ms “L”), Fo=2 External input Hold (Active “L”) Data-enable (Active “H”) ■Transistor, Isolation Output  (DN：sink type) Output capacity DC 30 V  30 mA Max Data output Parallel BCD, Latched output (Transistor “ON” with “1”) External output Over (Over: “ON”) Polarity (＋: “ON”) Synchronized signal (10ms “ON”) External input Hold (Active “ON”) Data-enable (Active “OFF”)
  Withstand voltage	Between input terminal and external case  : AC 1500 V for 1min. Between power terminal and external case  : AC 1500 V for 1min. Between power terminal and input terminal  : AC 1500 V for 1min.
  Insulation resistance	DC 500 V, More than 100 MΩ
  Power supply	AC 100 V  (90 to 132 V) AC 200 V (180 to 250 V) DC 24 V  (24 V ± 10%)
  Power consumption	AC power source… 3 VA, DC power source… 60 mA
  Operating temperature	0 to 50°C
  Storage temperature	-20 to 70°C
  Weight	AC power source…Approx. 300 g, DC power source…Approx. 200 g