5
•
Input: 4-ring EC/TDS probe with cell constant 2.0 ± 10%, or 4-20mA analog input
from a transmitter.
•
Output
(
HI700221
and
HI710221
only):
-
isolated 0-1 mA, 10 K
maximum load (optional);
-
isolated 0-20 mA, 750
maximum load (optional);
-
isolated 4-20 mA, 750
maximum load (optional);
-
isolated 0-5 VDC, 1 K
minimum load (optional);
-
isolated 1-5 VDC, 1 K
minimum load (optional);
-
isolated 0-10 VDC, 1 K
minimum load (optional).
•
Real time clock.
• Temperature compensation of the EC and TDS reading with temperature coefficient
ß selectable from 0 to 10%/°C.
• Manual temperature setting when the temperature probe is not inserted or temperature
exceeds the upper range
.
•
Last calibration data internally recorded (non-volatile EEPROM memory): calibration
date and time, cell constant, calibration solution values
.
