Physitemp Instruments BAT-10 - Manual (Page 7)

7.0 ANALOG OUTPUT FOR CHART RECORDING
7.1 NON-LINEARIZED ANALOG OUTPUT. BAT-10 is supplied with an analog output that is
proportional to the input thermocouple voltage with respect to analog common. This is adequate for
most stirp chart recording applications where small temperature ranges are involved. The output
bears a non-linear relationship to temperature and thermocouple tables can be used to compensate
for linearity changes over wider temperature ranges. The non-linear output can be found on pin 1 of
the 9-pin connector on the back of the instrument. The return is pin 7. The 9-pin male D-shell con-
nector (part # 6-2072) should be ordered if this output is to be used. It can also be obtained from
any electronic parts store.
7.2 LINEARIZED ANAOLOG OUTPUT. This is only supplied if specified at time of order. It
can be retrofitted only at factroy. The 9-pin male D-shell connector is included with this option.
The output is directly proportioanl to the number of counts displayed and is equal to 1mV/count
with respect to digital common. The linear analog output can be found on pin 6 of the 9-pi D-shell
connector on the rear of the instrument. IMPORTANT: The return is digital common, pin 8.
for example: display reads 19.86
number of counts = 1986
output is 1.986V
Please note: The linearized analog output uses a D/A converter which updates at the same rate as
the display (approximately 3 times per second) and therefore when temperature is changing rapidly,
step changes may be seen in the output voltage as the converter updates.
8.0 BATTERY REPLACEMENT
8.1 NON-RECHARGEABLE INSTRUMENTS
IMPORTANT: Use only alkaline batteries
Switch instrument OFF. Turning counter-clockwise, unscrew the two plastic caps from the battery
holders on the back panel. Slide old batteries out and replace with fresh “C”cells.
Install with positive terminals towards the plastic screw caps. Replace caps.
8.2 RECHARGEABLE INSTRUMENTS
Follow the instruction above but install four rechargeable N-Cad batteries.
9.0 RECHARGING THE BATTIERIES
9.1 Plug the Physitemp AC charger (9V @ 50 to 200mA AC) into AC input socket on the back
panel and connect to AC supply. Allow 16 hours for complete recharging.
With Ni-Cad batteries installed, the unit may be continuously operated from the AC recharger.
6
WARNING
The AC input socket is present on all versions (rechargeable and non-rechargeable.)
NEVER attempt to recharge or power a BAT-10 with non-rechargeable batteries.
The batteries may explode or leak. This is a fire hazard and can result in internal damage to the instrument.
BAT-10 can be field upgraded to BAT-10R with our RCK-10 recharger kit, which includes Ni-Cad batteries
and wall-mount charger.