Signet 9900 Operating Instructions Manual page 38

Conductivity / Resistivity
INPUT Menu
Enter string up to 13 characters (optional).
Default = COND/RES
Enter cell constant of sensor. Select 20.0, 10.0, 1.0, 0.1, 0.01, or CUSTOM.
Default = 1.0 (See NOTE below)
Enter the precise cell constant from the certifi cate provided with your sensor, or from the information
label on the sensor. Shown if CELL CONSTANT = CUSTOM. (See NOTE below)
Select °C, °F.
Default = °C
Select μS, mS, PPM, PPB, KOhm, or MOhm.
Default = μS.
NOTE: In USP Relay Mode, TEMP COMP must be set to NONE and Unit Of Measure must be set to μS.
If the COND UNITS selection is PPM or PPB, set the ratio of Total Dissolved Solids to μS.
Default = 0.50
Dampens display, output and relay response rates.
Select Low, Med, High, or OFF. (See discussion in Appendix)
Default = OFF
Select temperature compensation (NONE, LINEAR, PURE H2O). Default = LINEAR.
NOTE: In USP Relay Mode in Conductivity, Relay Source must be set to COND, TEMP COMP must be
set to NONE and Unit Of Measure must be set to μS.
For LINEAR or PURE H2O temperature compensation, select a % per ºC slope.
Maximum slope setting is 9.99 % per ºC. Default = 2.0
(If Temperature Compensation setting is NONE, this item will not be displayed)
Factory-Set Span:
0.01 cell (2819, 2839) ......... 0 to 100 μS
0.10 cell (2820, 2840) ......... 0 to 1000 μS
1.0 cell (2821, 2841) ........... 0 to 10,000 μS
10.0 cell (2822, 2842) ......... 0 to 200,000 μS
20.0 cell (2823) ................... 0 to 400,000 μS
NOTE: If using a 2850 Conductivity/Resistivity Sensor Electronics in conjunction with your 9900, the 2850 must
be set for the custom cell constant or the actual probe cell constant and the 9900 set for a 1.0 cell constant.
38 9900 Transmitter