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Thermo Ramsey - Hoferick Engineering GmbH

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Maximum Non-Destructive Input Voltage<br />

150/300 VAC for 1 minute<br />

Over voltage Category<br />

Category II<br />

DC Power Supply<br />

Auxiliary Power Supply Output (Alarm Contacts, etc.)<br />

Output voltage: 24 VDC<br />

Isolation: Yes – 500 volts<br />

Output ripple: 1.0 V peak to peak typical<br />

Output current:<br />

Short circuit protection<br />

600 mA maximum<br />

<strong>Thermo</strong> Fisher Scientific Installation<br />

REC 4175 Rev B<br />

Installation<br />

Load Cell (Weight)<br />

Load cell input circuits<br />

Number: Up to six (6) 350-ohm load cells in<br />

parallel. Cable distance 200 ft or<br />

less (3000 ft with sense)<br />

Sensitivity: 0.5mV/V to 3.5 mV/V (keyboard<br />

selectable)<br />

Input Impedance: 100 k-ohm minimum<br />

Maximum Usable Signal: 114% of 3mV/V<br />

Displayed A/D counts (3mV/V):112368<br />

Isolation: Non-isolated<br />

Max non-destructive input voltage: ± 6 V relative to ground<br />

Load Cell Cable Shield: Connected to earth ground<br />

Load Cell Excitation Power Supply<br />

10 VDC ±10%, 220 mA<br />

Minimum load impedance (operating) 58 ohms<br />

Output short circuit, 1.5 A maximum<br />

Excitation-Sense Circuitry<br />

6 Wire System; cable distance over 200 ft. (not to exceed 3000 ft.).<br />

Nominal input voltage: ±5 VDC (10 volts)<br />

Input impedance: 100 k-ohm minimum<br />

Jumper selectable: Local or remote sense<br />

Speed Input<br />

Optically isolated<br />

Built in current source for dry contact use<br />

Powered by + 20 V SPU Supply<br />

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