Logika Technologies LM-SD - Plumbing Connection; Air Purge Connection

Logika Technologies Inc. Model LM-SD Operator’s Manual Rev. 11-2010
Web: www.logikatech.com Phone: 905-829-5841 Fax: 905-829-8787 Email: info@logikatech.com
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4.2 Plumbing Connection
 Description- Water cooling is required when the ambient temperature at the sensor’s
location is higher than 50
o
C (120
o
F). Temperatures above this level require protection for
the electronics. A standard cooling water fitting is available at the sensor enclosure and
copper heat exchanger tubing is embedded in the sensor housing to facilitate efficient heat
removal from the sensor using circulating cooling water.
 Cooling Water Requirements
 Clean industrial water
 Maximum water inlet temperature of 25
o
C (75
o
F).
 Maximum water pressure of 4 bars (60 psi)
 Water flow rate of 1 to 2 L/min (0.035 to 0.071 ft
3
/min)
 Connection- Use ¼” flexible tube to connect the plant’s cool water supply to the sensor
cooling water fitting and secure with a hose clamp. Use Figure 4.2, Ambient Temperature
vs Water Flow Rate Graph, to determine the cooling water flow rate for the ambient
conditions around the sensor.
Figure 4.2: Ambient Temperature vs. Water Flow Rate
4.3 Air Purge Connection
 Description- Compressed plant air can be used to prevent dust and vapor from entering the
protective shroud around the lens of the sensor. Using plant air with the sensor will reduce
lens cleaning maintenance and prolong sensor life where dust or corrosive vapors are
present.