User's Manual

Transmitter
DigiTrak
®
F5
®
Operator’s Manual 47
Temperature Updates and Overheat Indicator
All DigiTrak transmitters are equipped with an internal digital thermometer. The internal temperature of
the transmitter is sent to the receiver and remote display every 4.4 seconds. This temperature is
displayed on the bottom right of the receiver and remote display screens next to the transmitter
temperature symbol .
NOTE: Because the digital thermometer is inside the transmitter, temperature increases due to
external drilling conditions will take time to transfer to the transmitter. Any increase in
temperature should be dealt with quickly to avoid irreversible damage.
Normal drilling temperatures range from 64°F (16°C) to 104°F (40°C). You should suspend drilling when
temperatures exceed 95°F (35°C) to permit cooling. Once the temperature reaches 118°F (48°C) the
thermometer icon will change to show that the transmitter is reaching a dangerous temperature, .
When the thermometer icon begins to flash, the transmitter has become dangerously hot and must be
cooled immediately or it will be damaged. The transmitter will shut down at 176°F (80°C).
To cool the transmitter, stop drilling and/or add more drilling fluid.
Transmitter Temperature Warning Tones
The audible tones emitted by the F5 receiver and remote display to indicate increases in the transmitter
temperature are summarized in the table below.
Temperature Warning Tones
Below 61°F (16°C) No tones for temperature increases.
61–97°F (16–36°C) Double-beep sequence (beep-beep) for every 4°C increase in temperature.
104–111°F (40–44°C) Two double-beep sequences (beep-beep, beep-beep) for every 4°C increase in
temperature. NOTE: Action is required to cool the transmitter.
118–133°F (48–56°C) Three double-beep sequences (beep-beep, beep-beep, beep-beep) for every 4°C
increase in temperature. NOTE: Cooling is critical to avoid irreversible damage.
Above 140°F (60°C) Three double-beep sequences every 5 seconds on the remote display, and every
20 seconds on the receiver. NOTE: Warning signifies dangerous drilling condi-
tions; irreversible damage may have already been done.
Above 176°F (80°C) Transmitter shuts down.
180°F (82°C) FS and FC transmitter overheat indicator (temp dot) turns black (see below).
220°F (104°C) Long-range and extended long-range transmitter overheat indicator (temp dot)
turns black (see below).