Campbell Scientific HUB-SDM5 Junction Box for SDMs - Manual (Page 5)

1
HUB-SDM5
1. Introduction
The HUB-SDM5 is a junction box and is used to connect multiple
Synchronous Device for Measurement (SDM) or SDI-12 devices/peripherals to
a single Campbell Scientific, Inc. datalogger. The HUB-SDM5 consists of an
environmental enclosure with six weather resistant bulkhead fittings and five
terminal strips.
2. HUB-SDM5 Specifications
Terminal Strips:
Three spring-loaded guillotine connections per terminal; two terminals in
common through a jumper creates five banks
Operating Temperature:
-55
°C to +85°C
Operating Humidity:
Noncondensing 0% – 95%
Dimensions:
Length: 17.8 cm (7.0”)
Width: 19.7 cm (7.75”)
Depth: 13.3 cm (5.25”)
Weight:
0.82 kg (1.8 lbs)
3. General
Inside the HUB-SDM5 enclosure are five pairs of terminal strips. These
terminal strips are mounted on a DIN rail and an orange end cap separates each
pair. Each pair of terminal strips is connected to each other by means of a
jumper. The terminal strips are used to connect up to six wires to each other.
The wires are secured to the terminal by a spring-loaded guillotine.
4. Installation and Wiring
A U-bolt is used to mount the HUB-SDM5 to a 1.25 inch NPT pipe.
The spring-loaded guillotines are opened with a small flat blade (2.5 X 50 mm)
screwdriver (p/n 8125). Orient the screwdriver blade so that the blade edge is
perpendicular to the orange separators. Gently insert the small flat blade