UNIDATA
Unidata Manual 6293 - Precision Water Level Instruments Issue 2.1
34
9 APPENDIX B - DETAILS OF UNIDATA FLOAT SYSTEMS
UNIDATA manufactures a range of float systems and accessories to suit the
requirements of various customers. These products are available as options for
the new 6541 Precision Water level Instrument. Each float is supplied with
floatline swages and a 160g lead counterweight (epoxy painted).
9.1 Float
lines
A range of special stainless steel float lines are available to suit different
applications.
Model
6541D/U
1mm stainless steel floatline
without beads.
Model
6541D/M
(Previously model 6509D). 1mm
stainless steel metric floatline with
brass beads each 125mm.
Model
6541D/I
1mm stainless steel imperial
floatline with brass beads each 3
inches.
Model
6541E
(Previously model 6509E) 0.4mm
diameter lightweight and flexible
floatline for use in boreholes and
with small diameter float pulleys.
9.2 Floats
Model 6541F-200 (Previously 6509M)
This is the largest float in the range. It is used to provide high accuracy data at
sites measuring a large water level range. It is also recommended for use with
other instruments with high mechanical friction or inertia. The float well size
recommended is at least 250mm diameter.
Dimensions: Sphere of 200mm diameter.
Maximum diameter of 220mm.
Material: Moulded black thermoplastic.
Stainless steel fitting for floatline.
Ballasted to float upright and on the
centreline with a 160g
counterweight.
Weight: 2300g.
