Humboldt H-4114SD.3F Electrical Density Gauge - Manual (Page 7)

1. The Case:
The Electrical Density Gauge is built into its case, providing storage of all
the gauge components allowing for easy transportation. The actual gauge
is built into the right side of the case and accessories are stored on the left
side except for the Dart Template, which is stored in the lid of the case.
2. Dart Template:
The Dart Template is located in the lid of the EDG. It is secured with velcro
to keep it in place. To remove unfasten the velcro straps.
3. Soil Sensor:
The Soil Sensor is located in the accessory caddy. It is the orange box
with the two pins on top and the long black cable attached. In use it
gathers electrical information about the soil under test and transfers the in-
formation to the EDG computer. During use, the Soil Sensor is connected to
the Dart Template using the velcro attached to the Soil Sensor and the Dart
Template. The Soil Sensor connects to the EDG through the attached long,
black cable and the port on the lower front of the gauge to the right
of the handle.
The Soil Sensor requires no maintenance or adjustment, so there is no need
to open the enclosure. Keep it clean and dry when using it. It is an electronic
circuit, so treat it with the same respect you use with your cell phone. If the
Sensor Pins become loose, hold the pin with pliers while tightening the nut
against the enclosure.
The Soil Sensor has a serial number, located on the label attached to its
side. This serial number matches the serial number of your gauge and the
Calibration Device included with the Gauge. In use, you should always use
the Soil Sensor with the matching serial number with your gauge. If the Soil
Sensor becomes damaged or lost, you will either need to send your Gauge
back to Humboldt or you can calibrate a new Soil Sensor
4. Soil Sensor Cables (set of two)
The Soil Sensor Cables are used to connect the Darts and the Soil Sensor
together for testing. On one side of these cables is a female 1/4" phone
plug and the other has an alligator clip. In use the 1/4" phone plug should
attach to the Soil Sensor and the alligator clip is attached to one of the
Darts. The EDG comes supplied with two of these cables.
5. Temperature Probe (Thermistor)
The Temperature Probe is located in the accessory caddy in a plastic box.
For use, remove it from its storage box and plug it into the port on the side
of the Soil Sensor using the mini-phone plug at one end of the Probe.
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