SW12V
SW12V
Orderable12 V Power Switch Assembly
Overview
The SW12V is a power switch that enables your data logger to determine whether 12 Vdc power is passed onto an external device.
Technical Description
The SW12 provides similar functionality as a data logger's switched 12 V terminal. Therefore, this power switch is typically used with older data loggers (e.g., CR510, 21X, CR7) that do not have a switched 12 V terminal.
The SW12V consists of a cable that connects to the data logger, and a terminal block for connecting the external device.
The SW12V has a shrink wrap that lists the function of each wire by color. Wiring to the power source should be red to positive (12 V), black to ground, and green to control (on a Campbell Scientific data logger this is a control port labeled with a “C” or a universal port labeled with a "U."). Power out (to the device being powered) requires a 12 V connection and a ground connection.
Power is distributed to the remote device when the control wire is activated. Wire the power (+ lead) from the device being powered to a connection labeled “SW12V” on the SW12V green connector. Wire the ground (─ lead) to the G terminal on the SW12V green connector.
Benefits
- Allows an older data logger to supply power to an HMP45C or HMP155A temperature and RH sensor only during measurement, thereby reducing current drain
Specifications
- Function
- Enables a data logger to determine whether 12 Vdc power is passed onto an external device.
- Current Ratings
- 0.9 A
(@ 20°C)
0.65 A(@ 50°C)
0.36 A(@ 85°C)
- Control Line Voltage Range
- 4 to 16 Vdc
- Cable Length
- 17.7 cm
(18 in.)
- Weight
- 45.4 g
(0.1 lb)
Replacement Parts
(2)4005
8 in. Nylon Cable Tie
These cable ties have a flexible, nylon construction. A connection is made by pulling the tapered end through the locking end, thus forming a loop. The free end is pulled tight to secure the cables, then trimmed back to the locking end. After attachment, the cable tie must be cut to be removed.
Orderable2376
Adhesive-Backed Cable Tie Mount
The 2376 consists of small, 3 cm square tabs with adhesive backing. The 2376 mounts attach to the inside of an enclosure to provide an anchor for attaching the cable ties. The cable ties, in turn, are used to secure cables and wires, thus providing strain relief and cable routing inside the enclosure.
Orderable
Similar Products
(1)
Compatibility
Sensors
The SW12V is primarily used with the redesigned HMP45C relative humidity probe (effective May, 2004) and the HMP155A relative humidity probe.