wtw pH 171 2K, Руководство по эксплуатации

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Configuration
109
Note:
The recorder range 2 (Rec 2) can be selected regardless of the setting for channel A in the
difference operation mode as well:
In this case the adjusted range is placed symmetrically around the zero point, which is at 10
mA for 0-20 mA and at 12 mA for 4-20 mA. In the difference operation mode D the current
output of Rec 2 is, therefore, at 10 mA or 12 mA respectively with similar pH or mV values of
channel A and B (difference A-B).
Example: Difference operation D: Signal output at recorder outputs REC 1 and REC 2
for output current 0-20 mA or 4-20 mA
Settings: Recorder measuring range REC 1:2.00 ... 12.00 pH
Recorder measuring range REC 2:
±
5 pH
Recorder output Rec 2 depending on test signal in difference operation mode:
Output current 0-20 mA Output current 4-20 mA
Measured values Recorder outputs Measured values Recorder outputs
Chan. A Chan. B Difference REC 1 REC 2 Chan. A Chan. B Difference REC 1 REC 2
7.00 pH 7.00 pH 0.00 pH 10.00 mA 10.00 mA 7.00 pH 7.00 pH 0.00 pH 12.00 mA 12.00 mA
5.00 pH 7.00 pH -2.00 pH 6.00 mA 6.00 mA 5.00 pH 7.00 pH -2.00 pH 8.80 mA 8.80 mA
7.00 pH 5.00 pH 2.00 pH 10.00 mA 14.00 mA 7.00 pH 5.00 pH 2.00 pH 12.00 mA 15.20 mA
2.00 pH 6.00 pH -4.00 pH 0.00 mA 2.00 mA 2.00 pH 6.00 pH -4.00 pH 4.00 mA 5.60 mA
6.00 pH 2.00 pH 4.00 pH 8.00 mA 18.00 mA 6.00 pH 2.00 pH 4.00 pH 10.40 mA 18.40 mA
Relay functions: Selection as transmitting contacts
(R models)
A function can be assigned to each relay (see following chart).
Setting:
Submenu "CONF RELAYS“.
With enter submenu
CONF RELAYS.