Calibrate Menu - GF Signet ProcessPro 8850-2 Installation Manual

Calibrate Menu

Display
(Factory settings shown)
Cell Constant
Standard
Cell: Standard
1
Cell: Custom
1.0000
Cond Units
μS
PPM Factor
2.00
Set:
Temperature
Set:
Conductivity
Loop Source:
Cond
Loop Range: μS
0.0000 › 100.00
Relay1 Source:
Cond
Relay1 Mode:
Low
Relay1 Setpnt:
10.0000 μS
Relay1 Hys:
0.5000 μS
Relay1 Range: μS
10.0000 › 40.0000
Relay1 PlsRate:
120 Pulses/min
Last CAL:
02-10-09
Settings repeat for Relay 2.
6
Select CUSTOM only if you are connecting a certifi ed conductivity sensor. Select STANDARD
for all other systems.
>
For STANDARD sensors: Select from these options: 0.01, 0.1, 1.0, 10.0 or 20.0.
>
For CUSTOM sensors: Enter the precise cell constant from the certifi cate provided with your
sensor, or from the information label on the sensor.
>
Select from these options: μS, mS, kΩ, MΩ or PPM.
>
If the Units selection is PPM, set the ratio of Total Dissolved Solids to μS. The maximum
> allowable is 3 μS = 1 PPM. The TDS factor can only be set in PPM. See page 9.
Provides a maximum 25 ºC offset to match temperature measurement to external reference.
>
For use with STANDARD sensors: Perform this single-point wet calibration for most accurate
results. Not required for CUSTOM sensors except for periodic system accuracy confi rmation.
>
Enter all zeroes to restore factory calibration to TEMP and COND settings.
Select the input (Conductivity or Temperature) source to be associated with the current
loop output.
>
Select the minimum and maximum values for the 4 to 20 mA current loop output. Be sure to
> modify this setting if you change the Cond. Units.
Select Conductivity or Temperature as the source for relay 1.
>
Select the mode of operation for relay 1: High, Low or Proportional Pulse.
The relay may be disabled (Off) if not in use.
>
In Low or High Mode, the relay will be energized when the Conductivity reaches this value. Be
sure to modify this setting if you change the Cond. Units.
>
In Low or High mode, the relay will be de-energized at Setpoint ± Hysteresis, depending on
> High or Low Setpoint selection.
If Relay 1 is in PULSE mode, set the start and end point of the range and also set the
maximum pulse rate. (The maximum PULSE rate setting is 400 pulses per minute.) Be sure to
>
modify this setting if you change the Cond. Units.
The combined Relay1 Range and Relay1 Pulse Rate settings shown here indicate:
"Start pulsing when the Conductivity value is 10 μS and increase the pulse rate up to the
maximum of 120 pulses per minute when the Conductivity value reaches 40 μS." The 8850
>
will accept any value from 0 to 400.
Use this "note pad" to record important dates, such as annual recertifi cation or scheduled
> maintenance.
Description
8850-2 Conductivity/Resistivity Transmitter