18-1
Specifications
18
18.1 CURRENT INPUT
INPUT RANGES(+10%): 0-20 mA and 4-20 mA
RESOLUTION: 1µA
MAXIMUM INPUT: 200 mA
INPUT OHMS: 5
SENSOR EXCITATION: 10V, to 30 mA
24V, to 25 mA
18.2 VOLTAGE INPUT
INPUT RANGES:
UNIPOLAR: 100 mV 1 V 10 V 100 V
BIPOLAR: ±50 mV ±0.5 V ±5 V ±50 V
RESOLUTION: 1 µV 10 µV 100 µV 1 mV
MAX INPUT: 70 Vp 350 Vp 350 Vp 300 Vp
INPUT OHMS: 1G 1M 1M 1M
BIAS AMPS: 50 pA 5 pA 1 pA 1 pA
SENSOR EXCITATION: 10V, to 30 mA
24V, to 25 mA
18.3 POTENTIOMETER INPUT
INPUT RANGES: 1 V or 10 V
RESOLUTION: programmed to 0.001%
SENSOR EXCITATION: 1.5 to 11 Vdc, to 60 mA max.
24V, to 25 mA max.
18.4 GENERAL
SCALE: +0.000001 to +500000 or
–0.0001 to –99999.
OFFSET: Zero to +999999
POLARITY: Automatic
NOISE REJECTION
NMR: 60 dB, 50 or 60 Hz, + selected filter
CMR: 120 dB
CMV: Dielectric strength to 1500 V transient per
260 VRMS or DC working voltage.
ACCURACY at 25 ºC:
MAX ERROR: ±0.005% of reading
SPAN TEMPCO: less than 20 ppm/ºC
STEP RESPONSE: 1 second to 99.9%
WARMUP: 55 minutes to rated accuracy. It is
recommended that the unit be continuously
running to insure its accuracy.
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