HYDROLOGICAL SEVICES PTY LTD INSTRUCTION MANUAL TIPPING BUCKET RAINGAUGE MODEL TB305-1MM QUALITY SYSTEM ISO 9001 2008 CERTIFIED HYDROLOGICAL SERVICES PTY LTD PO BOX 332, LIVERPOOL B.C NSW 1871, AUSTRALIA Phone:(Int.) 612 9601 2022 Fax: :(Int.) 612 9602 6971 Phone:(Nat.) (02) 9601 2022 Fax: :(Nat.) (02) 9602 6971 Email: sales@hydrologicalservices.com Web: www.hydrologicalservices.com Tipping Bucket Raingauge TB305-1MM 110-01 Issue 2:13/01/2014
Table of Contents I. GENERAL... 3 II. UNPACKING YOUR TB3 RAINGAUGE... 3 III. SPECIFICATION... 4 IV. INSTALLATION... 5 V. TEST OPERATION... 6 VI. MAINTENANCE... 7 VII. ELECTRICAL... 9 VIII. CALIBRATION... 9 IX. TB305-1MM PART LIST... 10 TB305-1MM Base Part List... 11 TB305-1MM Bucket Part List... 12 Syphon Part List... 13 Filter Part List... 14 Enclosure Part List... 15 XI. FIELD CALIBRATION DEVICE... 16 Tipping Bucket Raingauge TB305-1MM 100-02 Issue 2:13/01/2014
I. GENERAL TIPPING BUCKET RAINGAUGE MODEL TB305-1MM The Hydrological Services Tipping Bucket Raingauge (TB305-1MM) is recognised as the standard for measuring rainfall and precipitation in remote and unattended locations. The TB305-1MM raingauge operates on the tipping bucket principle, and has a metal bucket. A receiver of 305mm diameter collects the rainfall, which is strained by a catch filter and a straight through discharge mechanism before being passed to the tipping bucket measuring system. Tips of the bucket occur with each 1 mm precipitation collected. A reed switch detects these events and produces a momentary contact closure signal for: Logging in our Rainfall Data Logger Transmission by GSM, 3G, Satellite or PSTN (RainTrak System) Display on our Rainfall Counter (TRD). II. UNPACKING YOUR TB3 RAINGAUGE This package should contain: TB305-1MM Raingauge TB311/5 5 metre connecting lead Please verify you have received these items and that the Tipping Bucket Raingauge resolution is as ordered. To prepare the Tipping Bucket Raingauge for installation: lift the unit from the carton and place on secure surface remove polythene bag loosen the three enclosure securing screws and back them off until screw head is clear of the enclosure. lift the enclosure from the gauge carefully remove the elastic band/support pad from the bucket. Your Tipping Bucket Raingauge is now ready for installation. Tipping Bucket Raingauge TB305-1MM 100-03 Issue 2:13/01/2014
III. Receiver: Sensitivity: SPECIFICATION 305 mm + 0.8 diameter heavy duty cast aluminium, Powder coated. one tip at 1.0mm of rainfall. Maximum Intensity: Calibration accuracy: 700 mm / hr. TB3 bucket capacity Range Accuracy 1.0 mm 0-250 mm/hr + 2 % 250-500 mm/hr + 3 % Long term stable calibration. Humidity: 0 to 100 % Temperature: Contact system: - 20 to +70 o C dual reed switches potted in soft silicon rubber with varister protection. - Max Capacity: 24 Volts (0.5 amp max.) - Resistance: Initial contact resistance 0.1 OHMS - M.T.B.F: 10 8 to 10 9 Operations Funnel Discharge Orifice: Bucket: Base: Level: Mounting holes: Pivots: Insect covers: Outer enclosure: Height: Weight: Straight through discharge mechanism. Bucket assembly balanced to + 0.1 gms. Aluminium. bulls eye level adhered to aluminium base. three 10 x 20 mm slotted holes with 234 to 254 PCD cast in feet attached to outside diameter of base. ground nickel silver pivots with hard stainless steel shaft. stainless steel mesh on all openings to prevent insects and ants entering gauge. keyed to enable the release of the outer enclosure without the need for the removal of the three securing screws. 415 mm 5.5 kg Packed Dimensions: 6 kg 0.04m 3 Tipping Bucket Raingauge TB305-1MM 100-04 Issue 2:13/01/2014
IV. INSTALLATION DIAGRAM 1 i. Site Selection Rainfall measurements are intended to be representative of the actual rain falling on a given area. Some of the more important factors which influence the representativeness of a gauge are as follows: Site the gauge on level ground where possible. Avoid sloping sites. Site should have adequate protection from strong winds. Site should be free of large obstructions such as buildings and trees. Provide suitable ground surface to avoid splashing into the gauge. Tipping Bucket Raingauge TB305-1MM 100-05 Issue 2:13/01/2014
ii. Setting up Install the gauge on the foundation. A suggested foundation is shows in Diagram 1. Loosen the three enclosure securing screws and the enclosure. The gauge is provided with a level. Proceed to level by adjusting the hold down anchors as required. Connect lead to the rain gauge terminals, in accordance with Diagram 3, and to the recording device, in accordance with manufacturer s instruction manual. V. TEST OPERATION Manually tip the bucket a number of times, ensuring that each tip is being recorded and that the tilting mechanism is operating freely. Replace and secure the enclosure. Tipping Bucket Raingauge TB305-1MM 100-06 Issue 2:13/01/2014
VI. MAINTENANCE The only routine maintenance required is cleaning. The following items should be checked regularly for cleanliness: Catch filter Discharge Mechanism Straight Through (refer diagram 2) Interior of bucket Top surface of adjusting screws Ensure Rain Gauge is level using the bubble level fitted to the base Enclosure locking screws - lightly lubricate after cleaning All insect screens i. Dismantle Details To dismantle the Filter & Straight through discharge mechanism assembly. Push filter and pull Straight through discharge mechanism at the same time. Do not twist. Push Filter Do not twist while pushing & pulling Pull Straight through discharge mechanism Tipping Bucket Raingauge TB305-1MM 100-07 Issue 2:13/01/2014
1- Filter Cover Part No. TB410-01 2- Filter Screen Part No. TB410-02 3- O Ring Part No. SC024-23 4- Discharge Mechanism Part No. TB409-02 DIAGRAM 2 ii. Assembly Details To re-assemble push the filter/straight through discharge mechanism assembly back in place. Do not twist Tipping Bucket Raingauge TB305-1MM 100-08 Issue 2:13/01/2014
VII. ELECTRICAL Dual reed switches are provided for several reasons: Two isolated switches permit the control of two separate circuits; e.g. a local counter and a telemetry circuit. Parallel connection of both switches increases the current carrying capacity of the contact system if required. Parallel switch operation confers a degree of redundancy in locations where data from the raingauge is critical to flood warning etc. Mounting Holes Switch 1 Switch 2 Voltage free closure reed switch VIII. CALIBRATION All gauges have been calibrated by Hydrological Services Pty Limited prior to despatch. The following products and services are available from Hydrological Services Pty Ltd: Field Calibration Device, Model FCD-730, for routine field check calibrations, supplied with operating instruction sheet. Laboratory Calibration Unit, Model TB340, for calibration after servicing in workshops, supplied with operating manual. Recalibration Service at Hydrological Services factory. Please contact either Hydrological Services Pty Ltd or our local distributor for further information. Tipping Bucket Raingauge TB305-1MM 100-09 Issue 2:13/01/2014
IX. TB305-1MM PART LIST Metal Note: The TB305-1MM Raingauge can be ordered with a synthetic ceramic coated brass bucket only. Raingauge Part No. TB305-1MM Raingauge Description Tipping Bucket Raingauge, bucket capacity 1.0mm, bucket type synthetic ceramic coated brass Tipping Bucket Raingauge TB305-1MM 100-010 Issue 2:13/01/2014
TB305-1MM Base Part List Item2. Part no.: TB303 Descript: Reed Switch Assembly Item3. Part no.: (See next page) Descript: Bucket Assembly Item11. Part no.: SC045-02 Descript: Reed Switch Screw Quantity: 2 Item4. Part no.: TB312 Descript: Adjusting Screw Quantity: 2 Item10. Part no.: TB301-03 Descript: Insect Screen Quantity: 2 Item5. Part no.: SC008-24 Descript: Locknut Quantity: 2 Item9. Part no.: SC023-09 Descript: Bullseye Level Item6. Part no.: HS301-02 Descript: Pivot Screw Quantity: 2 Item1.TB30001 Descript: Base Item7. Part no.: SC008-53 Descript: Pivot Nut Quantity: 2 Item8. Part no.: SC045-21 Descript: Enclosure Screw Quantity: 3 Item12. Part no.: SC007-44 Descript: Screw Quantity: 3 Item13. Part no.: SC008-64 Descript: Nut Quantity: 3 Item14. Part no.: SC065-36 Descript: Pivot Nut Quantity: 3 Tipping Bucket Raingauge TB305-1MM 100-011 Issue 2:13/01/2014
TB305-1MM Bucket Part List Item15: Part no: HS304 Descript: Bucket Metal Bucket Item16: Part no: HS301-03 Descript: Bucket Axle Quantity: 2 Tipping Bucket Raingauge TB305-1MM 100-012 Issue 2:13/01/2014
Syphon Part List Item18: Part no.: SC024-23 Descript: O Ring Item17: Part no.: TB409-02 Descript: Straight through discharge mechanism Straight through discharge mechanism assembly Part no.: TB409 Tipping Bucket Raingauge TB305-1MM 100-013 Issue 2:13/01/2014
Filter Part List Item19: Part no.: TB410-02 Descript: Filter Screen Item20: Part no.: TB410-01 Descript: Filter Cover Filter Assembly TB410 Tipping Bucket Raingauge TB305-1MM 100-014 Issue 2:13/01/2014
Enclosure Part List Outer Funnel Inner Funnel Screw Item21: Part no.: TB336 Descript: Enclosure Assembly Vent Enclosure Part no. Description Quantity TB3310-01 Funnel Extension 1 TB337-01 Funnel 1 TB337-02 Enclosure 1 TB418-06 Vent 1 SC022-72 Screw 3 TB336 breakdown assembly Tipping Bucket Raingauge TB305-1MM 100-015 Issue 2:13/01/2014
HYDROLOGICAL SEVICES PTY LTD XI. FIELD CALIBRATION DEVICE Tipping Bucket Raingauge TB305-1MM 110-016 Issue 2:13/01/2014