OHAUS T71P, Instruction Manual

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EN-12 7000 Series Indicators
During battery operation, the battery symbol indicates the battery charge level. The indicator will automatically turn off when the
batteries are fully discharged.
Level Charge Remaining
0 to 5 %
5 to 25 %
26 to 50 %
51 to 75 %
76 to 100 %
2.2.7
Mounting Bracket Attachment
Position the wall bracket over the threaded holes on each side of the indicator and install the knobs (See Figures 1-1 and 1-2).
Adjust the indicator to the desired angle and tighten the knobs.
2.3 Internal Connections
Some connections require the housing to be opened.
WARNING: ELECTRICAL SHOCK HAZARDS EXIST WITHIN THE HOUSING. THE HOUSING SHOULD
ONLY BE OPENED BY AUTHORIZED AND QUALIFIED PERSONNEL. REMOVE ALL POWER
CONNECTIONS TO THE UNIT BEFORE OPENING. IF THE UNIT CONTAINS AN OPTIONAL RELAY
CONTROL BOARD, ADDITIONAL AC OR DC POWER CONNECTIONS MAY STILL EXIST WITHIN THE
HOUSING.
2.3.1 Opening the Housing
T71P
Remove the four Phillips head screws from the rear housing. Remove the front housing being careful not to disturb the internal
connections. Once all connections are made, reattach the front housing.
T71XW
Remove the four 8mm hex head bolts from the rear housing. Open the housing by carefully pulling the front housing forward.
Once all connections are made, reattach the front housing. Tighten the bolts to 2.5 N m (20-25 in lb) torque to ensure a
watertight seal.
2.3.2 Scale Base without Connector to T71P or T71XW
Bases without a circular connector must be attached to one of the internal load cell connectors on the main pc board. Pass the
load cell cable through a cable gland (Figure 1-1, item 14 or Figure 1-2, item 11 or 12) and attach it to terminal block J4
(Figure 1-3, item 9) or terminal block J7 (Figure 1-3, item 5). Tighten the cable gland to secure the cable and maintain a tight
seal.
Terminal Block J4 (Scale 1) Terminal Block J7 (Scale 2)
Pin Connection Pin Connection
1 +Excitation 1 +Excitation
2 +Sense 2 +Sense
3 +Signal 3 +Signal
4 Ground 4 Ground
5 -Signal 5 -Signal
6 -Sense 6 -Sense
7 -Excitation 7 -Excitation