The side plates are populated with connectors for network connectivity, debugging, sensors and both solar and external power inputs.

Left hand side

The left side of the HyDip Tank Gauging includes connectors that let the device communicate.

The left side of a HyDip Tank Gauging will have:


CELL	An antenna connector for 3G/4G (SMA/F).
GPS	A GPS antenna connector (SMA/F).
SIM	Slot for standard SIM card (not PIN protected).
ETH	An Ethernet port. This requires a standard RJ-45 connector.
USB	A USB port. This requires a USB type B connector
RST	A firmware reset button. If new firmware fails to work, this button resets to the factory original. Requires a fine screwdriver or paperclip to activate on power up or reboot.
RADIO	An antenna connector for XBEE (SMA/F).

Right hand side

The right side of the HyDip Tank Gauging includes a power switch, and a number of green 2-pin and 3-pin terminal block sockets.

The right side of a HyDip Tank Gauging will have:


EXT+/SOL+/GND	External power connector. For both EXT (external) and SOL (solar) inputs. The + marking denotes the positive terminal. GND is ground.
BATT/GND	Battery connector. BATT corresponds to the positive terminal and GND is ground. NTC is for the use of a thermocouple to prevent the battery being charged outside of the temperature range. This is an optional input. CAUTION 1: Use LEAD ACID RECHARGEABLE 6V only. CAUTION 2: Connecting a current through the NTC connector of the HyDip will cause serious damage to the charging unit.
TK1+/TK1-	Sensor 1 connector (analog 4-20mA). + is the positive polarity terminal.
TK2+/TK2-	Sensor 2 connector (analog 4-20mA). + is the positive polarity terminal.
TK3+/TK3-	Sensor 3 connector (analog 4-20mA). + is the positive polarity terminal.
TK4+/TK4-	Sensor 4 connector (analog 4-20mA). + is the positive polarity terminal.
ON/OFF	Device master power switch. CAUTION: Even with this switch in the off position, the battery charging circuit may still be powered and active. To ensure a full power down, remove all sources of external power including solar, external power (e.g. truck wiring) and the battery.

All of the connectors on the right side of the device are

Green terminal block sockets (2-pin or 3-pin), with
Corresponding green terminal block plugs (see plug being held in picture). We should supply these with the device. Use them to wire in sensors and power cables.

To order new block plugs separately, try the following:
HyDip green terminal block plugs:

3 pin MSTB2,5/3-ST-5,08 PLUG, FREE, R/A, 5.08MM, 3WAY, Farnell 3705365
2 pin PHOENIX CONTACT 1757019 TERMINAL BLOCK, PLUGGABLE, 2POS, 12AWG, Farnell 3705353

Compac adapter green terminal block plugs (smaller fitting):

2 pin, PHOENIX CONTACT 1803578 TERMINAL BLOCK, PLUGGABLE, 2POS, 16AWG, Farnell 3704907