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pH ARC Sensors Modbus RTU Programmer’s Manual (EPHUM011)
624300/01 page 62 / 67
2.8.5 Reading Definition of SIP and CIP
pH ARC Sensor are counting special cleaning events such as sterilizations or cleaning cycles by
means of tracking typical temperature profiles (see chapter 2.8.2).
Register 4988 defines a typical temperature profile for SIP (sterilization in place) and register 4996 for
CIP (cleaning in place). For the explanation the following values are given:
CIP temperature min: 80 °C CIP temperature max: 100 °C CIP time min: 30 minutes
SIP temperature min: 120 °C SIP temperature max: 130 °C SIP time min: 30 minutes
CIP and SIP
0
20
40
60
80
100
120
140
08:00
08:15
08:30
08:45
09:00
09:15
09:30
09:45
10:00
10:15
10:30
10:45
11:00
11:15
11:30
11:45
12:00
12:15
12:30
12:45
13:00
13:15
13:30
13:45
14:00
14:15
14:30
14:45
15:00
15:15
15:30
15:45
16:00
16:15
16:30
16:45
17:00
Time
Temperature [°C]
T CIP
T SIP
CIP min
CIP max
SIP min
SIP max
no SIP 1) SIP ok 3)
CIP ok 2)
no CIP 4) no CIP 4)
Figure 2.8.5.1: Definition of CIP and SIP cycles.
1) no SIP-cycle counted, because time too short <30 minutes.
2) CIP-cycle counted, because time >30 minutes and in CIP temperature range.
3) SIP-cycle counted, because time >30 minutes and in SIP temperature range.
4) no CIP-cycle counted, because of reaching the SIP-min limit.
Start
register
Number
of
registers
Reg1 /
Reg2
Reg3 /
Reg4
Reg5 /
Reg6
Reg7 /
Reg8
Modbus
function
code
Read
access
Write
access
4988 8 SIP
Tempera-
ture min
[°C]
SIP
Tempera-
ture max
[°C]
SIP
Process
time min
[min]
Empty 3, 4 U/A/S S
4996 8 CIP
Tempera-
ture min
[°C]
CIP
Tempera-
-ture max
[°C]
CIP
Process
time min
[min]
Empty 3, 4 U/A/S S
Figure 2.8.5.2: Definition of register 4988 and 4996.