K-Patents PR-21-S User Manual
Page 32
26
PR-21-S instruction manual
long probe sensor with standard insertion length (LPS) and with the following
process connections:
• Sandvik L-clamp, 80 mm
• ANSI-flange 150 lbs
• DIN flange 2556, PN25, DN 80
• JIS flange, 10 K 80A
The earlier mentioned sensors are equipped with an integral nozzle connection
(HPY) as a standard. An integral steam nozzle can be easily fitted afterwards, if
required.
Figures 4.2 show recommended components for a prism wash system with inte-
gral steam nozzle. The components are provided by K-Patents. The steam line
should be equipped with a check valve (Figure 4.2). If the process medium solid-
ifies at ambient temperature, the check valve should be insulated (Figure 2.4). A
condensate trap should be used to keep the steam line hot (Figure 4.2).
Alternatively, an external timer can be used. The timer should be equipped with
extra contact which is kept closed during prism washes.
Note. Do not connect the extra contact to external voltage. For recommended
wash pressures and times see Section 4.5
Note. In Intrinsically Safe system solenoid valves are mounted in the safe area and
the pneumatic valves in hazardous area.