External Sensors - Spectrum Technologies WatchDog 1650 Product Manual

External Sensors

All WatchDog 1000 Micro Station models except the 1250 have
external channels (ports) for additional sensor input. The
following table lists some of the available optional sensors. See
www.specmeters.com for a complete list. Most sensors include a
6-foot cable with pin-type connector. Items 3667-20, 6460-20,
6470-20, and 6450WD20 have 20 foot cables.
Item # Description
3665R Tipping Bucket Rain
collector
3666 Leaf Wetness Sensor
3667, External (Soil)
3667-20 Temperature Sensor
3670i Silicon Pyranometer
3668i, 3668i3, Quantum Light Sensor
3668i6 and Sensor Bars
3676i UV Light Sensor
6460, WaterScout SM 100 Soil
6460-20 Moisture Sensor
6470-6, WaterScout SMEC 300
6470-20 Soil Moisture EC,
Temperature Sensor
3669 Soil Moisture
Transducer
6450WD Watermark Soil Moisture
6450WD20 Sensor
6451 Irrigation Sensor
3673 Input Cables for user-
3674 supplied sensor
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Measurement Accuracy
Range
N/A ±2%
0(Dry) - 15(Wet) N/A
-25 to 212ºF ±1°F
±0.5°C
-32 to 100ºC
2
1-1250 W/m ±5%
-2 -1
0-2500 µmol m s ±5%
-2 -1
0-200 µmol m s ±5%
0% to saturation ±3%
(typically 50%)
0% to saturation ±3%
0 to 10 mS/cm ±2%
-25 to 212ºF
±0.5°C
0-100 kPa ±2%
0 - 200 cbars N/A
Switches at 5 psi ±1 psi
0-2.5V ±0.005V
4-20mA ±1%
Digital Display
The digital LCD display is a key feature of the WatchDog 1000
Micro Stations. A visual display of the on-site readings correlates
to the sensor configuration of the logger.
Press the button to the right of the LCD to read all the sensors
and activate the display. The display will cycle through all
sensors four times, then shut off. The displayed sensor values
will not be updated unless you press the button again.
The A, B, C, D indicators will light to identify any external sensor
values. If dashes ("——") are displayed, a sensor is not plugged
into the port. For station models with internal sensors, the
temperature and RH icons will light when their values are
displayed.
If the "Sync" icon (the two circular arrows) is lit, it means the
logger is full and no longer recording data. The logger must be
connected to a data shuttle or a PC running SpecWare to
download the data and begin logging again.
The battery icon displays the relative battery life remaining. At
the lowest level, the diagonal bar lights to indicate that there is
almost nothing left.
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