A-34 Micro-Tech 9101/9201 Reference Manual, Rev J Thermo Fisher Scientific
Table A–3. Premium A/D Board Load-Cell Technical
Specifications (Model 9201)
Load Cell Excitation Power Supply ±5 VDC ±5%, 180 mA, minimum load impedance (58 ohms).
Output short circuit, 0.5 A maximum.
Number: Up to six (6) 350-ohm load cells in parallel. Cable
distance: 200ft [61m] or less without sense, or 3000ft [914m]
with sense.
Sensitivity: 0.5mV/V to 3.5 mV/V (keypad selectable).
Input Impedance: 1M-ohm minimum.
Maximum Usable Signal: 114% of 3mV/V.
Internal A/D counts: (3mV/V): 7,341,000.
Max non-destructive input voltage: ± 6 V relative to ground.
Load Cell Cable Shield: Connected to earth ground.
4 wire system: cable distance not exceed 200ft [61m].
6 wire system: cable distance not to exceed 3000ft [914m].
Excitation-Sense Circuitry
Nominal input voltage: ±5 VDC.
Input impedance: 100 k-ohm minimum.
Jumper selectable: Local or remote sense.
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