Process Technology LUFRAN Instruction page 5

INTRODUCTION (Continued):
While the DAC control system is capable of providing an outlet temperature within 0.3°C
of the desired PROCESS SETPOINT, the maximum possible temperature rise through
the heater is dependant upon the wattage of the unit and the water flow rate through the
unit. The following table illustrates the maximum temperature rise of various models
based upon the water flow rate through the unit.
Flow Rate
L/min
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
The Lufran fluoropolymer inline water heaters include a comprehensive system of safety
controls and devices to insure safe and long-lasting operation. The list of safety devices
includes but is not limited to the following:
 EMO pushbutton
 Circuit breaker
 Ground fault (earth leakage) protection
 Pressure relief valve
 Liquid level sensors
 Leak detector
 High process temperature sensors
 High element temperature sensors
 Purge gas flow switch
 Moisture sensors in the purge gas exhaust line
 Solid state relay (SSR) fault and overheat detection
 Sensor failure (open sensor) detection
M-43-01
Revision - Date: 08 – 04/06/15
Heater Power (Kilowatts)
24 36 52 65
Maximum Theoretical Temperature Rise (°C)
68.6 - - -
34.3 51.4 74.3 -
22.9 34.3 49.5 61.9 68.6
17.1 25.7 37.1 46.4 51.4
13.7 20.6 29.7 37.1 41.1
11.4 17.1 24.8 31.0 34.3
9.8 14.7 21.2 26.5 29.4
8.6 12.9 18.6 23.2 25.7
7.6 11.4 16.5 20.6 22.9
6.9 10.3 14.9 18.6 20.6
6.2 9.4 13.5 16.9 18.7
5.7 8.6 12.4 15.5 17.1
5.3 7.9 11.4 14.3 15.8
4.9 7.3 10.6 13.3 14.7
4.6 6.9 9.9 12.4 13.7
4.3 6.4 9.3 11.6 12.9
Figure 2: Maximum Temperature Rise Table
72 105 130 144
- - - -
- - - -
- - -
75.0 - -
60.0 74.3 82.3
50.0 61.9 68.6
42.9 53.1 58.8
37.5 46.4 51.4
33.3 41.3 45.7
30.0 37.1 41.1
27.3 33.8 37.4
25.0 31.0 34.3
23.1 28.6 31.6
21.4 26.5 29.4
20.0 24.8 27.4
18.8 23.2 25.7
- 5 -
210 260 288
- - -
- - -
- - -
- - -
- - -
- - -
85.7 - -
75.0 - -
66.7 82.5 -
60.0 74.3 82.3
54.5 67.5 74.8
50.0 61.9 68.6
46.2 57.1 63.3
42.9 53.1 58.8
40.0 49.5 54.9
37.5 46.4 51.4
Lufran Single Outlet Manual