Campbell TB4, Инструкция по эксплуатации

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TB4 and TB4MM Tipping Bucket Rain Gages
4
5. Select any other sensors you have, then finish the remaining Short Cut
steps to complete the program. The remaining steps are outlined in Short
Cut Help , which is accessed by clicking on Help | Contents |
Programming Steps .
6. If LoggerNet , PC400, RTDAQ , or PC200W is running on your PC, and the
PC to datalogger connection is active, you can click Finish in Short Cut
and you will be prompted to send the program just created to the
datalogger.
7. If the sensor is connected to the datalogger, as shown in the wiring
diagram in step 4, check the output of the sensor in the datalogger support
software data display to make sure it is making reasonable measurements.
5. Overview
The TB4 and TB4MM tipping bucket rain gages are manufactured by
Hydrological Services Pty. Ltd. (Model TB4) and modified for use with
Campbell Scientific dataloggers.
These rain gages catch rainfall in the 200 mm (7.87 in) diameter collection
funnel. When a full bucket of rainfall is collected, the tipping bucket assembly
tips and activates a reed switch. The switch closure is recorded by the
datalogger pulse channel. When the bucket tips, the water drains out the
screened fittings in the base of the gage.
The rain gages are ideal for locations where intense rainfall events may occur.
They include a siphoning mechanism that allows the rain to flow at a steady
rate regardless of rainfall intensity. The siphon reduces typical rain bucket
errors and produces accurate measurements for up to 50 cm per hour.
The 260-953 Alter-Type Wind Screen can be used with the TB4 and TB4MM
to minimize the effects of strong winds. Siting information and the installation
procedure for this wind screen is provided in our
260-953 manual .
6. Specifications
Features:
•
More accurate measurement of high-intensity precipitation
•
High precision—tips at 0.01-in. increments
•
Compatible with the CWS900-series interfaces, allowing it to be used
in a wireless sensor network
•
Compatible with Campbell Scientific CRBasic Dataloggers:
CR200(X) series, CR300 series, CR6 series, CR800 series, CR1000,
CR3000, CR5000, and CR9000(X)
Funnel : 200 mm (7.87 in)
Drain Fittings: Accept 12 mm ID tubing
Measurement Range: 0 to 500 mm/hr
(0 to 19.7 in/hr)
Accuracy: Better than
+
2% @ 500 mm/hr (19.7 in/hr)