EUTECH INSTRUMENTS ALPHA CON 1000 CONDUCTIVITY CONTROLLERTRANSMITTER, Инструкция по эксплуатации

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Operating Instructions
α
lpha-CON1000
68X216802
11
5 MEASUREMENT
5.1 Display in Measurement mode
When the controller is initially powered on, it automatically enters into the Measurement mode after the
large dual LCD displays all segments briefly.
The upper display shows the measured Conductivity value, while the lower display shows the
temperature value. Annunciators at the right side of the display indicate whether the controller is set for
µ
S or mS measurement. Similarly annunciators or icons at the top or left side of the display shows the
current status of controller, e.g. “HOLD”, “SETUP”, “MEAS”, “CAL”, “READY”, etc.
5.1.1 Check electrode performance
To read current electrode slope and offset values without changing them:
1)
Press the CAL key followed by the ENTER key without adjusting the security code (leave code at
“000”). The upper display shows the condition of the probe. The lower display reading shows the
temperature reading.
Note: If security code is changed to a value other than “000”, pressing the ENTER key will return
to the Measurement mode, without displaying electrode information.
2)
Press the ENTER key a second time to return to Measurement mode.
5.1.2 Checking set points
To read current set point values without changing them:
Press the RELAY Selection (Rel A / Rel B) key. The upper display shows the set point for Relay A;
the lower display shows “SP1”.
After two seconds the upper display shows the set-point value for Relay B; the lower display shows
“SP2”.
After an additional two seconds, the controller returns to the Measurement mode.
5.2 Security Codes
This controller has two levels of security protection with separate security codes. The first level allows
entry into the Calibration mode: security code = 11; the second allows entry into the SETUP mode:
security code = 22.
The security codes protects the controller from unauthorised tampering of its current setting. The
parameters cannot be changed unless the security code is entered.
5.2.1 How to enter and change parameters in Calibration mode
1) Press the CAL key. The upper display shows “000” and the
lower display shows “C.Cd” to prompt the user to enter the Calibration
security code.
2)
Press the
∆∆
or
∇ ∇
keys to scroll upper display to Calibration
security code “11”.
3)
Press the ENTER key. The display shows “CAL CON”.
4) Press ENTER key again to begin calibration. Refer to Section 6 for full details on calibration.
5)
Press the
∆∆
and
∇ ∇
keys simultaneously (escape) to return to the Measurement mode.
11 11
C.Cd C.Cd