Hanna-instruments PCA 300 Series Instrukcja Użytkownika Pobierz pdf (Strona 30)

• When an alarm condition is met, the

ALARM LED turns on and the corre-

sponding relays closes.

RECORDER OUTPUT SPAN SETTING

The selected recorder output voltage range or the 4-20 mA

current output may be associated with any Chlorine concen-

tration in the 0 to 5 mg/L range.

For example, if the 0.0 to 1.0 V recorder output has been

selected, the operator can select 0.0 V to correspond to a

concentration of 3.0 mg/L (Recorder Minimum setting) and

1.0 V to correspond to a concentration of 4.5 mg/L (Re-

corder Maximum setting). The full scale span of the recorder

would then be 1.5 mg/L, yielding a magnified view of the 3.0

to 4.5 mg/L concentration range on the recorder.

To set the lower limit of the recorder output

• Press REC.MIN. Display will show the previously set mini-

mum recorder level (e.g. 1.08 mg/L). The most signifi-

cant digit will be blinking.

• Using the  and  keys set the new minimum recorder

level (e.g. 3.00 mg/L).

• Press REC.MIN a second time. The display will blink the

new setpoint for the low end of the recorder output.

REC.

MIN

REC.

MIN

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 59 60

Brak uwag

Hanna-instruments PCA 300 Series Instrukcja Użytkownika Strona 30