DayTronic System 10 - Model 10 A62-8 C Eight-Channel 4-20 ma Conditioner Card; 1 General Description and Specifications

1 GENERAL DESCRIPTION AND SPECIFICATIONS
This high-accuracy conditioner accepts up to eight independent current signals with-
in the ISA standard range of 4-20 mA. Both unipolar and bipolar (“zero-center”) inputs
are allowed. Since the 10A62-8C does not provide excitation, the current source must
supply its own power supply, if required.
Chopper-stabilized amplification with active low-pass filtering yields excellent voltage
compliance and make the 10A62-8C suitable for virtually any standard Process Indus-
try current input.
ADDITIONAL 10A62-8C SPECIFICATIONS
Input Current
: 4 to 20 mA (unipolar) or 4 to 12 to 20 mA (bipolar or “zero-center”);
automatically selected—on an individual channel basis—when the channel is config-
ured; for the System 10 channel “type” codes assigned to 10A62-8C data channels,
see Table 1, below
Amplifier (per channel):
Common-Mode Range: ±20 V operating; ±50 V without instrument damage
Common-Mode Rejection Ratio: DC: -100 dB; at 60 Hz, 1 kHz, and 3 kHz: -150 dB
Input Impedance: Differential: 100 Ω; Common-Mode: 500 kΩ
Burden: 2 V-DC at full scale
Offset: Initial: ±0.02% of full scale; vs. Temperature: ±20 ppm/°C; vs. Time: ±20
ppm/month
Gain Accuracy: ±0.02% of full scale
Gain Stability: vs. Temperature: ±50 ppm/°C; vs. Time: ±20 ppm/month
Filter (per channel): 3-pole modified Butterworth; 3 dB down at 5 Hz; 60 dB down at
100 Hz
Step-Response Settling Time (Full-Scale Output):
To 1% of final value: 170 msec
To 0.1% of final value: 240 msec
To 0.02% of final value: 270 msec
Auxiliary Outputs to Mainframe Wire-Wrap Pins: None
Table 1 10A62-8C “Type” Codes
Full-Scale Channel
Range Type Code
4-20 mA 6C
4-12-20 mA 6D
GENERAL DESCRIPTION AND SPECIFICATIONS 10A62-8C.1
MODEL 10A62-8C
EIGHT-CHANNEL 4-20 MA
C
ONDITIONER CARD
SYSTEM 10
ANALOG INPUT CARDS
1.E.2.10A62-8C