Thermo Fisher Scientific Alpha TDS 200 - Manual (Page 19)

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8.3 Set Point 1 – P1.0
Setup program P1.0 allows you to set parameters for relay 1.
P1.1: select relay 1 set point value
P1.2: select relay 1 as low or high set point
P1.3: set relay 1 hysteresis value (dead band)
P1.0 P1.1 P1.2 P1.3
SP 1 SP 1 SP 1
200 LOW
HIGH
100
HYS t
Press ▲and ▼keys together (ESCAPE) at anytime, to leave Setup mode and return to
Measurement mode.
P1.1: Select relay set point value
Set the TDS value that will activate Relay 1. If measured value overshoots or
undershoots Set Point value, Relay 1 will be activated and corresponding LED on front
panel will light.
1.
Key in password “022” as per procedure in Section 5.
2. Screen will scroll P1.0 and SP1. Press ENTER.
3. Screen will scroll P1.1, SP1, then current set point value.
4. Press ▲or ▼keys and adjust first relay set point. Default value is 10% of full scale
of range selected.
5. Press ENTER to confirm and continue to step three of P1.2, or press ▲and
▼keys together to return to P1.0. Press ▲and ▼keys together again, to return to
the TDS measurement mode.
P1.2: Set relay as high or low set point
Select low set point to activate Relay when measured value undershoots Set point;
select high set point to activate Relay when measured value overshoots Set point.
Using both SP1 and SP2, you can select lo/lo, lo/hi, hi/lo or hi/hi set points.
1.
Key in password “022” as per procedure in Section 5.
2. The screen will scroll P1.0 and SP1. Press ENTER twice.
3. The screen will scroll P1.2, SP1, and LOW or HIGH (Default is LOW).
4. Use ▲or ▼keys to toggle between LOW and HIGH.
5. Press ENTER to confirm and continue to step 3 of P1.3, or press ▲and ▼keys
together to return to P1.0. Press ▲and ▼keys together again, to return to TDS
measurement mode.
P1.3: Set Hysteresis value