Hach si792 E Quick Start Manual

Quick start guide
si792 E/T 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 (DOC026.53.00796). 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 E/T 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—Hach GLI 3700 series inductive conductivity sensors
Jumper Terminal No. 3700 series color 7MA2200 series color
—
Jumper between terminals 2
and 3
—
—
—
—
For sensors other than Hach 3700 series, 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, 2008, 2016. All rights reserved. Printed in Germany.
DOC016.53.00796
si792 transmitter version
Profibus PA Foundation Fieldbus
(–) (–)
(+) (+)
1 white green
2 blue yellow
3 yellow
4 green brown
5 shield violet/black
7 — blue/grey
8 red red/pink
">", 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
Calibration
Zero calibration in air
1. Press
CAL
2. Remove and clean the sensor.
Note: Make sure that the sensor is dry.
3. Use the
UP ARROW
conductivity value.
Note: If the entry of the zero point value takes longer than 6 seconds, the display will alternate
between showing the conductivity value and the temperature value.
4. Press
ENTER
5. The display will show the new cell constant value and zero point. Press ENTER.
6. Immerse the sensor in the process water.
7. The transmitter remains in the HoLD mode. Press
The transmitter remains in HoLD mode for approximately 20 seconds after calibration and
returns to the measurement mode.
Note: Repeat the calibration when "Err" is displayed.
Calibration with a calibration solution
Use a calibration solution with a known conductivity value to adjust the transmitter to show
white
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
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.
The display will show the temperature-corrected value of the calibration solution (unless
temperature compensation is set to off in the configuration menu).
">" 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
, enter passcode: 1001, . CAL ZRO will be displayed for 3 seconds.
ENTER
and to change the value until zero is displayed as the
RIGHT ARROW
to confirm.
, enter passcode: 0110, . CAL SOL will be displayed for 3 seconds. The
ENTER
and to enter the known value of the calibration solution.
RIGHT ARROW
to save the value.
ENTER
again.
ENTER
.
ENTER
again.
Edition 2 06/2016