P O Box 159 • Crestwood, KY 40014 • (877) 243-0042 • (502) 243-0039 fax
b.
The battery charge for each sensor is displayed on the TV2 Status screen. Once the
battery drops below 20% a ‘change battery in sensor X’ message will be shown on the
Current Status display.
c.
Range - The unobstructed range for the sensors is ~ 100 feet. If the sensor is used
indoors, the range could be less. If there are walls or partitions between the sensor and
the TV2 the range will definitely be less.
d.
Accuracy – The accuracy of a temperature sensor is dependent on the accuracy of the
sensor being used.
i.
Internal or external Thermistors ±0.3°C
ii.
Relative Humidity sensors ±3.0%.
iii.
Standard thermocouple accuracy. Depends on the type. (see page 4 above)
iv.
Digital wired sensors ±0.3°C
v.
Differential Pressure ±0.002” w.c.
6.
Can the wireless sensors be calibrated?
Yes. The calibration data is, however, stored in the TV2 display to which the sensor is
linked, so if you unlink a sensor and link it to a different display you will need to reenter
the calibration data. A sample calibration procedure can be obtained from our web site
procedure. Your calibration service or QC department
may have a different procedure.
7.
How is the data transmitted from the sensor to the TV2?
The sensor is attached to a transmitter which sends a signal to the TV2, which has a built-
in base-station that receives data. This transmission uses 433mhz.
8.
What is the purpose of the Zoom-out and Zoom-in buttons on the TV2 chart display?
a.
The amount of data displayed by the chart on the TV2 changes according to the Zoom
setting. One data point is plotted in each column if the chart is zoomed in completely
(Zoom =1X).
b.
Touching the ‘
ZOOM-OUT’
button (green triangle at the bottom of the chart display)
causes more than one data point to appear in each column. The data on the TV2 can
be zoomed out 10 times (Zoom =10X). This means that the user can see between 4
months and 256 years of data on one screen, depending on how often the sensor is
collecting data.
In any zoomed-out mode more than one collected measurement
appears in each vertical column. The recorded measurements are displayed as a high-
low vertical bar.
