TM 10-4610-240-10
TM 08580C-10/1
T.O. 40W4-13-21
3-8. CALIBRATION AND REPAIR OF TDS METER (PORTABLE).
CAUTION
The TDS meter is an accurate meter. With the exception of calibrating meter or replacing meter battery,
never attempt to service or modify instrument, nor allow it to get wet since moisture will damage the
meter.
a. Calibration. Each time before using TDS meter, perform a calibration check in accordance with paragraph 2-
15c(4). Whenever switching to or from seawater sources, meter must be recalibrated in accordance with paragraph 2-
b. Battery Replacement (figure 3-14):
(1)
Remove bottom plate.
(2)
Disconnect leads from battery.
(3)
Install new battery and connect leads.
(4)
Install bottom plate.
(5)
Depress indicator button and adjust wheel until the dial reading is e ual to the value stamped on the
q
bottom plate. If using a seawater source, refer to paragraph 2-15c.
(6) If reading cannot be adjusted after replacing battery, replace the TDS meter.
FIGURE 3-14. TOTAL DISSOLVED SOLIDS (TDS) METER BATTERY REPLACEMENT
3-28
