TE525-ET Rain Gauge with 6 in. Orifice for ET Station

Overview

The TE525-ET, manufactured by Texas Electronics, has a 6 in. orifice and measures rainfall in 0.01 in. increments. The TE525-ET funnels precipitation into a bucket mechanism that tips when filled to a calibrated level.

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Benefits and Features

  • Accuracy is ±1 percent at rates up to 1 in./hr
  • Compatible with all Campbell Scientific data loggers (including the CR200(X) series)
  • High precision—tips at 0.01-in. increments
  • Compatible with the CWS900-series interfaces, allowing it to be used in a wireless sensor network

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te525-l rain gage
TE525-L Rain Gage

Technical Description

For this version of the TE525 tipping bucket rain gauge, the cable terminates in a connector and is the ideal length for attachment to the ET107 or ET106 ETo Weather Station. The TE525-ET has a 6" orifice and measures rainfall in 0.01 inch increments. The TE525-ET funnels precipitation into a bucket mechanism that tips when filled to when filled to a calibrated level.

Specifications

Sensor Type Tipping bucket/magnetic reed switch
Material Anodized aluminum
Temperature 0° to 50°C
Resolution 1 tip
Volume per Tip 4.73 ml/tip (0.16 fl. oz/tip)
Rainfall per Tip 0.254 mm (0.01 in.)
Accuracy 1.0% up to 2 in./h (50 mm/h)
Cable 2-conductor shielded
Funnel Collector Diameter 15.4 cm (6.06 in.)
Height 24.1 cm (9.5 in.)
Cable Length 139.7 cm (55 in.)
Tipping Bucket Weight 0.9 kg (2.0 lb)
Cable Weight 0.1 kg (0.2 lb) per 3.05 m (10 ft) length

Compatibility

For this version of the TE525 tipping bucket rain gauge, the cable terminates in a connector and is the ideal length for attachment to the ET107 or ET106 ETo Weather Station.

Related FAQs

Number of FAQs related to TE525-ET: 14

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  1. What are the indicators that a tipping bucket rain gage is out of calibration?

    Not enough tips or too many tips.

  2. Is there a preset upper limit for the intensity (such as 40 mm per 30 min) that a TE525-L can handle?

    The accuracy of the TE525-L diminishes as rainfall intensity increases (see the Accuracy specification) because at higher intensities, rain will keep pouring into the tipping mechanism as it is tipping, causing missed tips. The maximum listed intensity in the specifications is 2 to 3 in./hr, which would give an accuracy of +0%, -5%.

  3. How can replacement funnels and screens for the TE525-L be purchased?

    Replacement funnels can be ordered by calling an application engineer at Campbell Scientific.

  4. What can cause a tipping bucket rain gage to be out of calibration?

    When a rain gage is out of calibration, it is usually because of the buildup of dirt and grime on the internal surfaces of the tipping bucket mechanism. Cleaning the internal surfaces usually brings the rain gage back into calibration. It is also possible that a rain gage is out of calibration because it is no longer level.

    To minimize the possible occurrence of calibration errors, perform routine cleaning and maintenance of the rain gage at least once every three months. The environmental conditions at a particular site may require a facility to perform cleaning, leveling, and maintenance on a much more frequent schedule.

  5. Can one TE525 model be converted to another by exchanging funnels?

    A TE525-L can be converted to a TE525MM-L and vice versa because the inner tipping mechanisms are the same. To convert a TE525-L or TE525MM-L to a TE525WS-L, the rain gage must be sent in to Campbell Scientific to change the tipping mechanism. If an 8 inch funnel is used on a TE525-L or TE525MM-L without changing the tipping mechanism, the multipliers for the rain measurement will change. For information about these multipliers, see the TE525 Instruction Manual. 

  6. What are the most common errors with a tipping bucket rain gage?

    The most common errors are either that the rain gage appears to have drifted out of calibration or that the tips are not being correctly recorded by the datalogger. 

  7. What is needed to connect a sensor that is compatible with wireless sensor interfaces to a CR800, CR1000, or CR3000 in a wireless network?

    To incorporate a sensor that is compatible with wireless sensor interfaces into a wireless network, a CWS900-series wireless sensor interface is needed, as well as an A205 CWS-to-PC interface to configure it. 

  8. What type of wind screen can be used for a tipping bucket rain gage?

    The 260-953 Alter-type rain gage wind screen consists of 32 heavy metal leaves that hang freely and swing as the wind moves past them. The swinging leaves act as a wind damper and help minimize the effect of wind on the rain measurements without adding additional turbulence.

  9. If a sensor automatically ships with a calibration sheet, what information is included on it?

    The information included on a calibration sheet differs with each sensor. For some sensors, the sheet contains coefficients necessary to program a datalogger. For other sensors, the calibration sheet is a pass/fail report.

  10. Can a CS705 be used with a TE525-L or TE525MM-L?

    The CS705 Tipping Bucket Snowfall Adapter cannot be used directly with the TE525-L or TE525MM-L because of the funnel size. To make the rain gages compatible, they can either be sent to Campbell Scientific to be converted to a TE525WS-L, or an 8 inch funnel can be installed. If the funnel is used, see the instruction manual for the appropriate multipliers, as they will change.

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