Hach si792 C Series Quick Start Manual

Quick start guide
si792 C 2-wire conductivity transmitter
DANGER
Explosion hazard. This Quick Start Guide is intended for setup of the si792
transmitter in a non-hazardous location. It is not a substitute for the instructions in
the user manual (DOC026.53.00795). Installation in a hazardous location must follow
the applicable control drawing or ATEX certificate (refer to the documentation CD).
DANGER: Electric shock hazard. Disconnect power to all wiring before making
connection to the si792 C series transmitters.
Connect 24 VDC power and communications
Remove the power source before making any electrical connections to the si792 transmitter.
Terminal No.
4–20 mA/HART
(+)
10
(–)
11
Connect the sensor
Jumper Terminal No.
Jumper between 1 and 2
Jumper between 3 and 4
Jumper between 4 and 5
—
—
For sensors other than the Hach 3400 series or 831x, refer to the user manual.
Basic configuration—4–20 mA
1. Press and enter to enter the configuration mode. The following menus can
CONF 1200
be changed:
• 4–20 mA current output—out.1MNU
• Temperature compensation—tc MNU
• Alarms—ALrt MNU
2. To move to a different menu, press the
3. To change a setting within a menu, use the
to change the setting.
4. Press to move to the next item in the menu.
ENTER
To exit the configuration mode at any time, press
manual for additional configuration options.
© Hach Company, 2007, 2014. All rights reserved. Printed in Germany.
DOC016.53.00795
si792 transmitter version
Profibus PA Foundation Fieldbus
(–) (–)
(+) (+)
3400 series color 831x series color
1 —
2 black white/yellow
3 red
4 —
5 clear white/orange
7 blue blue
8 white black
">", then press enter.
RIGHT ARROW
"^" or
UP ARROW RIGHT ARROW
and then
CONF ENTER
4–20 mA signal values
Default settings:
• 0 mS at 4 mA
• 100 mS at 20 mA
1. Press
CONF
2. Press
ENTER
3. Set the values for 4 mA and 20 mA.
4. Press
CONF
Enter the cell constant
1. Press
CAL
2. Use the
UP ARROW
nected sensor. The conductivity value will be displayed also.
Note: For Hach or GLI contacting conductivity sensors, the cell constant is usually printed on a
tag with the sensor wiring.
Note: If the entry of the cell constant takes longer than 6 seconds, the display will alternate
between showing the conductivity and the temperature value.
3. Press
ENTER
4. The transmitter displays the cell constant value and CELL. Press
5. The transmitter remains in HoLD mode. Press
The transmitter remains in HoLD mode for approximately 20 seconds after calibration and
returns to the measure mode.
Note: Repeat entry of the cell constant when "Err" is displayed.
Calibration
—
The sensor can be calibrated with a calibration solution or by comparison.
Calibration with a calibration solution
red
Use a calibration solution with a known conductivity value to adjust the transmitter to show
the same value as the solution.
—
Note: Stabilize the temperature during calibration.
1. Press
CAL
transmitter is ready for calibration.
2. Remove and clean the sensor.
3. Immerse the sensor in the calibration solution.
4. Use the
UP ARROW
tion.
Note: If the entry of the calibration solution value takes longer than 6 seconds, the display will
alternate between showing the cell constant and the temperature value.
5. Press
ENTER
6. The display will show the new cell constant. Press
7. The transmitter remains in HoLD mode. Press
The transmitter remains in HoLD mode for approximately 20 seconds after calibration and
returns to the measurement mode.
">" buttons
Note: Repeat the calibration when "Err" is displayed.
. Refer to the user
, enter for the "out. 1MNU" menu.
1200
to go to the "o1.4mA" or "o1.20mA" sub-menu.
, then to exit the configuration mode.
ENTER
and enter passcode: 1100, . CAL CELL will be displayed for 3 seconds.
ENTER
and to enter the value of the cell constant of the con-
RIGHT ARROW
to save the value.
ENTER
, enter passcode: 0110, . CAL SOL will be displayed for 3 seconds. The
ENTER
and to enter the known value of the calibration solu-
RIGHT ARROW
to save the value.
ENTER
.
ENTER
again.
.
ENTER
again.
Edition 2 March 2014