DIVEX MHE-02, Инструкция по установке, эксплуатации и обслуживанию

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KI-OM-523 R2 Chapter 3
CHAPTER 3 OPERATION
3.1 GENERAL
The Divex Electric Powered Mini Water Heating Module has been designed to run with the
minimum amount of operator input. The temperature controller governs the process based
on the set point and feedback from the PT100 probe giving the measured output temperature
(PV). The operator is required to input the set point to the controller and switch on the
appropriate heater banks to provide the required capacity.
Before running the unit the operator must determine the required heating capacity for the
application. The following steps outline the procedure for the determining this capacity.
• Approximate length of umbilical in water (L
U
)
• Approximate operating temperature of fluid desired at bottom (T
b
)
• Inlet water temperature (T
in
)
Step 1 - Determine total outlet temperature.
Using the graph in Fig 3.1 to determine the temperature loss along the umbilical hose, select
the length of the umbilical hose on the vertical y-axis and move horizontally to the right until
the line is intersected then move vertically upward to the horizontal x-axis. The value on the
x-axis will yield the approximate temperature loss (T
loss
) through the specified length of
umbilical.
Add the temperature loss through the umbilical to the temperature required at the diver. This
will give the total outlet temperature (T
out
) required. This value must be entered into the
controller as the control set point value (SV).