YOKOGAWA FC400G, User Manual, Page: 60 / 91

< 6. Operation >
6-11
IM 12F5A1-01E
6.3.3 Setting in the Service Level
Press the
YES
key to enter the service level on *SERVC display in Setting Level.
Enter a code in the service level to enter the service mode.
(1) Code 01: Selecting Temperature Unit (°C / °F) (*TEMP Mode)
Set temperature unit to “0” to apply °C or “1” to use °F.
This parameter is set to “0” (°C) at factory shipment.
(2) Code 02: Selecting Exceeded Temperature Compensation Range Check ON / OFF (*FAIL
Mode)
Note : The left digit of two-digit figures is the reserved code. This does not affect operation whether it is 0 or 1.
To check if sample water temperature is in the temperature compensation range (0 to 40°C), set
the right digit of the figures to “ 1 ”. Set it to “ 0 ” when not conducting a check.
When this parameter is set to “ 1 ” (conducting the check), fail contact output becomes ON if
sample water temperature exceeds the temperature compensation range.
This parameter is set to “ 0 ” (no check) at factory shipment.
(3) Code 04: Setting Stability Determination Parameters (*∆T.SEC Mode)
Set parameters ( ∆PPM / ∆T and CT) used to determine if electrode operation is stable during
zero point and / or span calibration.
If concentration changes by ∆PPM mg/l or more during ∆T seconds even when the time elapses
for CT minutes, meaning that operation is unstable, error indication is generated,
• Setting *∆T.SEC (Stability Check Time)
Set the stability check time (*∆T.SEC) in the range of 5 to 200 sec. This parameter is set to 10
sec at factory shipment.
• Setting * ∆ PPM (Concentration Change Allowance)
Set the concentration change allowance (* ∆ PPM) in the range of 0.01 to 0.05 mg/l. This
parameter is set to 0.01 mg/l at factory shipment.
• Setting *CT. min (Stabilization Wait Time)
Set stabilization wait time (*CT.min) in the range of 0.1 to 25.0 min. This parameter is set to 7.0
min at factory shipment.
(4) Code 05: Selecting Linear Output / Two-line-segment Output (*NONLN Mode)
Set the parameter to “0” to generate linear output (see Figure 6.6) in the range of 0 to 100% or
to “ 1 ” to generate two-line-segment output where output is segmented into two steps; 0 to 50%
and 50 to 100%. This parameter is set to “0” (linear output) at factory shipment.
100
50
0
1 2 0
100
50
0
1 0.5 2 0
F6.6e.ai
Output
(%)
Output range (mg/l)
Output
(%)
Output range (mg/l)
Figure 6.6 Linear Output Example Figure 6.7 Two-Line-Segment Output Example