HyQuest Solutions TB3 - Specification

HYQUEST SOLUTIONS PTY LTD
Tipping Bucket Raingauge TB3 100-04 Issue 12: 29/7/2014
III. SPECIFICATION
Receiver: 200 mm + 0.3 diameter heavy duty cast aluminium, Powder coated.
Resolution:
one tip at 0.2, 0.5, 1.0 mm or 0.01 inch of rainfall.
Maximum Intensity: 700 mm / hr.
Calibration accuracy:
TB3 bucket capacity Range Accuracy
0.1mm
, 0.2mm, 0.01”,
0.5mm & 1.0 mm
0-250 mm
/hr + 2 %
250-500 mm/hr + 3 %
Long term stable calibration.
Humidity: 0 to 100 %
Temperature:
- 20 to +70
o
C
Contact sy
stem: dual reed switches encapsulated 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
Syphon: 0.4 mm (12 ml) capacity of rainfall - made from Brass with a non
hydroscopic outer body. The syphon can be dismantled for routine cleaning
and servicing.
Bucket: Two types of bucket assemblies available; synthetic ceramic coated Brass
bucket, balanced to +/- 0.05 gms, and injection moulded, chrome plated, non-
hydroscopic ABS plastic, UV stabilised, balanced to +/- 0.05gms.
Base:
Dieca
st aluminium.
Level: bulls eye level adhered to aluminium base.
Mounting holes: three 10 x 20 mm slotted holes with 234 to 254 PCD cast in feet attached to
outside diameter of base.
Drain fittings: to attach 12.5 mm inside diameter tubing, to catch rainfall after passing
through buckets.
Pivots:
ground
Sapphire Pivots with tough 316g stainless steel shaft.
Insect covers: stainless steel mesh on all openings to prevent insects and ants entering
gauge.
Outer enclosure: keyed to enable the release of the outer enclosure without the need for the
removal of the three securing screws.