10
VDC and 0-20 MA). Up or down scale keyboard programmable.
Input Impedance:
>1 Mohm for thermocouple input.
<10 Ohm for linear current input
>165 Kohm
T/C Lead Length: 100 Ohm max.
Reference Junction Compensation: from -20 to 60°C.
RTD Lead Length Compensation: up 20 Ohm/wire.
Sampling Time: 1000 ms.
Display Update: At each sample.
Input Resolution with Linear Input: 4000 counts.
Low/High Scale Values: from -1000 to 3000, linear inputs only.
Decimal point: Settable in any position.
NOTE: These secondary inputs are not isolated from the primary input. A double or reinforced
insulation between instrument output and power supply must be guaranteed by the external
device.
2.6 PRIMARY & SECONDARY INPUTS COMMON SPECIFICATION
Common Mode Rejection Ratio: 120 dB @50/60 Hz
Normal Mode Rejection Ratio: 60 dB @ 50/60 Hz
Reference Accuracy: ± 0.2% Full Scale Value (FSV) ± 1 digit @ 25 ± 10°C and nominal power
voltage.
Operative Accuracy - Temperature Drift:
<200 ppm/°C span (RJ excluded) for T/C input
<300 ppm/°C of full span for current, voltage and strain gage input
<400 ppm/°C of full span for RTD input
<0.10C/°C for reference junction.
2.7 DIGITAL INPUT SPECIFICATION
Digital Input: One input from contact closure (voltage free). It may be keyboard programmable for
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