Manhole rung hanger mounting (optional)
Attach the instrument to the manhole rung hanger, then hang the instrument from a manhole ladder
rung that is a maximum of 4.4 cm (1.75 in.) in diameter. Refer to
.
Figure 3 Manhole rung hanger mounting
1
Manhole rung hanger
2
Suspension harness
Electrical installation
D A N G E R
Electrocution hazard. Always remove power to the instrument before making electrical connections.
Connector ports
N O T I C E
Cover the connector ports that are not used with the waterproof caps. Water and unwanted material can cause
damage to the connector pins.
The connector ports are on the left side of the enclosure. The number and type of connector ports on
the instrument is not the same for all models.
Connect to power
If a power supply is not installed on the top of the instrument, connect a 12 VDC power source to the
12 VDC port, such as a:
• Battery (Ni-Cad or lead acid)
• AC power pack
• Deep-cycle marine battery
• Vehicle power outlet
for wiring information.
Note: If the input voltage is less than 14.2 VDC, the instrument identifies the power sources as a battery. If the
input voltage is more than 14.2 VDC, the instrument identifies the power source as an AC power converter.
English
11
Summary of Contents for Sigma 950
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