Model 10A68-2
Dual AC RMS Conditioner
Dual AC RMS Conditioner
| Input Type | Description | SPS6000 | SPS8000 | System 10 |
| Voltage, Current | Dual AC RMS |
X X |
X-X |
XX |
This conditioner accurately measures the true RMS amplitude of one or two independent external analog AC signals, mixed as desired, from a wide range of voltage or current sources- including engineering parameters conditioned by other Daytronic cards. Since the 10A68-2 does not provide excitation, the analog source must supply its own power supply, if required (as is the case with many accelerometers, when used to measure the noise level or vibration factor of a dynamic process). The card is particularly useful in evaluating the efficiency of AC electrical power systems.
The 10A68-2 mates with a special connector board that has a separate screw-terminal block for each input channel. In System 10, "absolute" calibration may be used for a 10A68-2 channel if the parameter being measured is voltage itself. "Two-point" ("deadweight") calibration should be used if the voltage or current input signal is an analog of some other parameter that has at least two independently and accurately known calibration values. In the SPS6000 System, both "calculated" and "two-point" calibration are available.The table below gives for each allowable full-scale input range the normal-mode input impedance (Zi), maximum normal-mode input voltage or current with no instrument damage (Vmax or Imax), and bandwidth flat to 0.1%, 1%, and 3 dB, respectively.
Specifications:
- Transducer Types: AC signal sources (voltage or current) that provide their own power supply
- Input Voltage and Current Ranges: 50 mV-AC through 500 V-AC and 50 mA through 5 A (see table for precise ranges); automatically selected- on an individual channel basis- when the channel is configured
- Amplifier (per channel): Floating, with RMS Converter (see table for bandwidths)
-
Common-Mode Range: ±1500 V operating and without instrument damage
Common-Mode Rejection Ratio: DC and at 60 Hz: infinite; at 1 kHz: -60 dB
Common-Mode Input Impedance: Essentially infinite for all input ranges
Offset: Initial: ±0.04% of full scale; vs. Temperature: ±20 ppm/°C; vs. Time: ±20 ppm/month
Gain Accuracy: ±0.05% of full scale typical, following calibration*
Gain Stability (all ranges except 5 A): vs. Temperature: ±50 ppm/°C; vs. Time: ±20 ppm/month
Gain Stability (5-A range only): vs. Temperature: ±500 ppm/°C; vs. Time: ±20 ppm/month
- Filter (per channel): 3-pole modified Butterworth; 3 dB down at 5 Hz; 60 dB down at 30 Hz
-
Step-Response Settling Time (Full-Scale Output):
To 1% of final value: 150 msec
To 0.1% of final value: 200 msec
To 0.02% of final value: 250 msec
- Auxiliary Outputs: Filtered outputs available on wire-wrap pins
-
*Initial (uncalibrated) inaccuracy may be as great as ±0.1% of full scale for all input ranges except 5 A, for which it may be as great as ±0.5%. (see "Accuracy Specifications"). Maximum error that could occur upon replacement of a Model 10A68-2 not followed by calibration is ±0.2% of full scale (±1% for 5-A range).
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Model 10A68-2 Input Characteristics |
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Range
|
Zi
|
Vmax or Imax |
Bandwidth (to 0.1%) |
Bandwidth (to 1%) |
Bandwidth (to 3 dB) |
|
50 mV-AC 100 mV-AC 200 mV-AC 500 mV-AC 1 V-AC 2 V-AC |
2 k-ohm 2 k-ohm 2 k-ohm 2 k-ohm 2 k-ohm 2 k-ohm |
40 V-AC 40 V-AC 40 V-AC 40 V-AC 40 V-AC 40 V-AC |
40Hz-400Hz 40Hz-400Hz 40Hz-400Hz 40Hz-400Hz 40Hz-400Hz 40Hz-400Hz |
20Hz-2 kHz 20Hz-2 kHz 20Hz-2 kHz 20Hz-2 kHz 20Hz-2 kHz 20Hz-2 kHz |
10Hz-4 kHz 10Hz-4 kHz 10Hz-4 kHz 10Hz-4 kHz 10Hz-4 kHz 10Hz-4 kHz |
|
5 V-AC 10 V-AC 20 V-AC |
200k-ohm 200k-ohm 200k-ohm |
140 V-AC 140 V-AC 140 V-AC |
50Hz-4 Hz 50Hz-4 Hz 50Hz-4 Hz |
20Hz-10kHz 20Hz-10kHz 20Hz-10kHz |
10Hz-20kHz 10Hz-20kHz 10Hz-20kHz |
|
50 V-AC 100 V-AC 200 V-AC 500 V-AC |
1 M-ohm 1 M-ohm 1 M-ohm 1 M-ohm |
630 V-AC 630 V-AC 630 V-AC 630 V-AC |
40Hz-400Hz 40Hz-400Hz 40Hz-400Hz 50Hz-4 Hz |
20Hz-2 kHz 20Hz-2 kHz 20Hz-2 kHz 20Hz-10kHz |
10Hz-4 kHz 10Hz-4 kHz 10Hz-4 kHz 10Hz-20kHz |
|
50 mA 100 mA 200 mA 500 mA |
1 ohm 1 ohm 1 ohm 1 ohm |
700 mA 700 mA 700 mA 700 mA |
40Hz-400Hz 40Hz-400Hz 40Hz-400Hz 50Hz-4 Hz |
20Hz-2 kHz 20Hz-2 kHz 20Hz-2 kHz 20Hz-10kHz |
10Hz-4 kHz 10Hz-4 kHz 10Hz-4 kHz 10Hz-20kHz |
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5 A |
0.01 ohm |
7 A |
40Hz-400Hz |
20Hz-2 kHz |
10Hz-4 kHz |
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Note: Transformers are available for current inputs greater than 5 A. |
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For complete Pricing and Ordering Information, write us or call Daytronic at 1-800-668-4745 |