Section 5 – OPTIONAL ACCESSORIES
5.6 MODEL WA-3 WATER COOLING ACCESSORY
Used only with Modline 4 and standard enclosure. For Series
43-04F or Series 43-02C only
(do not combine with Model
WA-3 Water Cooling accessory).
Model WA-3 water cooling
accessory is recommended where ambient temperatures are
expected to exceed the maximum rating of the Modline 4.
Nominal water flow of 10 to 20 gallons per hour at water
temperatures below 90°F (32°C) is suitable for most
applications. The cooling effect must be sufficient to keep
the case temperature of the instrument below its maximum
rating.
Two 1/2 inch NPT tapped holes accept water intake and outlet
pipes. A matched flange permits bolting to the Modline 4 and
other standard accessories. Where high ambients and moist
atmospheres are encountered, the use of an AA-3 Air Purge
accessory with a WA-3 water cooling accessory prevents
moisture condensation on the lens of the Modline 4.
PHYSICAL DIMENSIONS
ASSEMBLY NOTES
Two gaskets and three 5/16-18 NC flanged hex head bolts are supplied. Insert bolts through
unthreaded holes on front flange of WA-3 and bolt to mounting support (or additional accessory if
used). Use one or two gaskets as needed, to form a good seal and still allow flange surfaces to touch.
Insert the gasket(s) in recess at rear and bolt the sensor flange to the WA-3 rear flange.
Note: use bolts
supplied with instrument.
Refer to Section 2 for grounding information. If necessary, use appropriate
insulation between flanges of Modline 4 and WA-3 and attach with insulating hardware.
5-8
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