K-Patents PR-01-S - Manual (Page 35)

INSTRUCTION MANUAL FOR K-PATENTS PR-01-S (-AX/FM/CS) DOCUMENT/REVISION No. INM 1/14
Effective: May 15, 2009
33
4. START UP
4.1. INITIAL CHECK
a. Check that the Serial Numbers of the Sensor and the Indicating transmitter match (Section 2.1).
b. Check wiring and supply voltage (Section 3.6). For intrinsiallyc safe installations, check with Figures
12.21...12.23.
c. Press the main power switch to ON position. The three green LEDs (LD1, LD2, LD3) on the Power
Supply card (Figure 6.40) are then turned on.
d. The Normal Display (Figure 2.60) should now appear. The diagnostic message should be "Normal
operation" or if the process pipe is empty "Low concentration/no sample". For any other message
consult section 6.3.
e. The display should show the current process temperature.
f. TEST value in the display should be in the range 8-248. A value near 248 indicates a clean prism in an
empty process pipe.
g. For the concentration reading, see Section 4.2.
h. Press soft key "Display" for additional data (Figure 2.71), like e.g. output in mA. Further data is
obtained by soft keys "Optical image" and "System configuration". Return to previous display by
RESET key.
i. Measure the output signal. It should agree with the mA display.
j. IMPORTANT: If a prism wash controlled by a Relay Unit is employed, press soft key "Start prism
wash" and check the wash sequence. The TEST value should clearly increase (and the concentration
reading decrease) during wash. The "Start prism wash" soft key does not show, if no relay is specified
as wash relay.
If the initial check is not OK, turn to Chapter 6.
4.2. CALIBRATION CHECK
Wait until normal process conditions occur. The instrument is precalibrated at delivery (DELIVERY
DATA SHEET). Hence an on-scale output should be obtained. If not, take a few samples and check that
the process conditions are normal.
If the diagnostic message is "Normal operation" but the concentration reading is at the wrong level,
correction can be entered by the keyboard (Section 5.2).
If the concentration reading is correct, but not the output mA, see Section 5.1.
The damping of the concentration measurement may be increased, e.g. if necessary to get a smoother
recorder track, see Section 2.8. A damping time of 15 seconds is normally the best. WARNING: Avoid
overdamping, the signal should not be insensitive.