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Tegam 840A - Page 11

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MEMORY BACKUP
During battery replacement, the contents of user-programmed memory
(data, operating modes, etc.) can be saved. Prior to removing the old battery,
turn off the instrument, and connect a Model 80010 battery charger. Then
exchange batteries, and disconnect the battery charger. Do not leave the bat-
tery charger connected to instruments with non-rechargeable batteries.
OPERATION WITH RECHARGEABLE
BATTERY
Model 80010 provides a 9-volt Ni-Cd battery and recharger suitable for use
with the unit. This battery provides 3-4 hours of continuous operation. This
duration can be extended to several days by operating simultaneously from
both the battery and recharger.
Turn off the instrument to recharge the battery. Allow 7 hours to fully
recharge the battery. Then unplug the recharger to avoid overcharging.
MODEL 80010 SPECIFICATIONS
Model No. 80010/100 80010 80010/220
Vin: 90-110 VAC 108-132 VAC 198-242 VAC
50/60 Hz 50/60 Hz 50/60 Hz
Vout: 40 VDC @ 5mA 40 VDC @ 5mA 40 VDC @ 5mA
OPERATING INSTRUCTIONS
1. DIAGNOSTICS AND ERROR MESSAGES
Unit self-diagnostics provide fault condition readouts which are described
below:
PROBLEM: LIKELY CAUSE:
Blank display, unit does not (1) Improper battery installation.
power-up. Check battery polarity.
(2) Dead battery.
BAT Annunciator. (1) Low battery voltage, install a new
battery. If problem persists, con-
sult factory.
Display reads OPEN. (1) No thermocouple, RTD or thermis-
tor is plugged into the meter input.
10

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