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Yokogawa 2469/2489 Juxta AC Voltage Transducers

Juxta AC Voltage Transducers
2469/2489

The 2469 and 2489 AC Average Voltage transducers produce an analog DC signal output corresponding to the average value of the AC input. The true RMS versions always require external power and produce an analog DC output corresponding to the true RMS value of the input signal.

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Table 1Table 2Table 3Table 4Table 5
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Table 1Transducer function
22Average Voltage
243 in 1 Avg. Voltage
32True RMS Voltage
Table 2Input
330-150 VAC
360-300 VAC
Table 3Input frequency
150 Hz
250/60 Hz
4400 Hz
5Other
Table 4Output
AFA0-1 mADC (22 & 24 only)
AFA0-1 mADC (TRMS only)
AHD4-20 mADC (22 & 32 only)
Table 5Aux. power*
185-135 VAC
2170-264 VAC
Model 2469 2489
Input Voltage 0-150 VAC or 0-300 VAC
Input over range capability 120% of rated input continuous
Input Burden (Averaging models) 150 VAC: <1.8VA / element; 300 VAC: <3.6VA / element
Input Burden (true RMS models) 150 VAC: <0.8VA; 300 VAC: <1.6VA
Rated outputs 0-1mADC into 10 kΩmax. load; 10VDC output compliance
4-20 mADC into 750Ω max. load; 15VDC output compliance
Accuracy 10-100% of rated input 0-1mADC=±0.5% of full scale
4-20mADC=±0.5% of span 
0-1mADC=±0.2% of full scale
4-20mADC=±0.2% of span
External calibration adjustment Zero: ±1% minimum(AHD only)
Span: ± 2% minimum
Zero: ±5% minimum(AHD only)
Span: ± 10% minimum
Response time <400 milliseconds(0-99% of output)
Output ripple 0.3% of span peak-to-peak max. 0.5% of span peak-to-peak max.
Isolation 2500 VAC input to output, power and case
2000 VAC aux. power to output and case (AHD and TRMS)
500 VAC output to case
Surge Withstand Capability IEEE472/ANSI C37.90.1 - 1989, JIS C1111(5KV, 1.2 x 50 microseconds)
Insulation resistance >10 megohm / 500VDC input/output/power/case
Operating temperature -20°C to +60°C
Operating humidity 0 - 90% relative humidity (non-condensing)
Temperature drift ± 250 PPM / °C of span ± 140 PPM / °C of span
External magnetic field < 0.2% at 400 AT/m
Input frequency range 50 - 500 Hz < 0.2% effect on accuracy
Influence of frequency < 0.2%, 45-65 Hz, fundamental through 9th harmonic (TRMS models only)
Weight TRMS = 900g, 0-1mA = 358g, 4-20mA = 897g, 3 in 1 = 1100g
Shock < 0.2% after 50G, 3 Axis and 6 repetitions
Vibration < 0.2% after 16.7 Hz, 4 mmp-p 1 hour, 3 Axis
UL Recognition File # E60579


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