Hach si792 D series Quick Start Manual

Quick Start Guide
For si792 D series 2-wire transmitters
Additional copies are available on www.hach.com
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 reading and following
the instructions in the user manual. Installation in a hazardous location must be
performed by qualified personnel per the applicable control drawing or ATEX certificate
in the si792 D on the provided documentation CD.
DANGER: Electric Shock Hazard. Disconnect power to all wiring before making
connection to the si792 D series transmitters.

1. Connect the power and communication

Table 1 Terminal assignments
Terminal No. 4–20 mA/HART
10 (+)
11 (–)

2. Connect the sensor wires

(Table 2 and
Table 2 Terminal assignments—si792(x) D (4–20 mA/HART)
Terminal No. Oxygold G/Oxyferm sensor wire color
1
5 shield/red
6 shield/yellow-green
7
8
1 With VP cable LZY079, LZY353 and LZY354
Table 3 Terminal assignments—si792x D-FF and si792x D-PA
Terminal No. Oxygold G/Oxyferm sensor wire color
2
4 shield/red
5 shield/yellow-green
7
8
1
With VP cable LZY079, LZY353 and LZY354
© Hach Company, 2007, 2014. All rights reserved. Printed in Germany.
For technical assistance or ordering information: visit www.hach.com, call 800-227-4224 or email techhelp@hach.com
(Table 1).
Profibus PA Foundation Fieldbus
(–)
(+)
Table 3).
1 Oxysens sensor wire color
clear clear
brown
shield
green yellow
white blue
1
Oxysens sensor wire color
clear clear
brown
shield
green yellow
white blue
DOC016.53.00797
3. The transmitter is set by default for Oxysens and Oxyferm. Manually select the sensor type for the
Oxygold G (si792(x) D only. Refer to the user manual for si792x D-FF and si792x D-PA.)
a. Press
CONF
b Input passcode:
c The display will show "tyPE A" and "o1 SnSR". Use the
ferm and Oxysens) or "tyPE B" (Oxygold). Press
d Press CONF
for 20 seconds, then return to measurement mode.
4. Calibrate the sensor. The two most common calibration methods are described below. Refer to
the user manual for other details.

Calibration in air (recommended)

a. Press CAL
entered (or default) humidity value.
b Remove the sensor from the process and place in air.
c Enter the actual relative humidity and press
default) barometric pressure.
d Enter the barometric pressure and press
(–)
take some time. When complete, the display will show the concentration in the units specified
(+)
in the configuration menu.
Note:To exit the drift check after more than 10 seconds, press CAL (accuracy will be reduced).
e Accept the calculated value for the concentration or adjust the value as necessary and then
press ENTER
1.013 mbar).
f Press ENTER
will be shown in the display alternately with Hold.
g Press
ENTER

Calibration by Comparison

The sensor can be calibrated for DO (or gas volume concentration) by entering the sample
value from a measurement in an instrument such as a laboratory or portable meter. The sensor
does not need to be removed from the process during calibration. The sample temperature
should correspond to the measured process temperature for accurate results.
a. Press
CAL
StorE.
b Collect a grab sample for measurement in the lab. Press
the transmitter.
c The cal mode indicator will flash to indicate that calibration is not complete. The transmitter
will continue to measure and display the current sample values.
d Measure the grab sample with a laboratory or portable meter.
e Press
CAL
display will briefly show CAL PRD and then CALC.
f Edit the displayed value to match the value measured by the laboratory or portable meter and
press
ENTER
g Press
ENTER
will be shown in the display alternately with Hold.
h Press
ENTER
Note:For comparison calibration via Foundation Fieldbus, see the user manual.
, .
ENTER
. Press . The display will show "out.1MNU". Press
1200 ENTER
ENTER
, ENTER to exit the configuration mode. The transmitter will remain in hold mode
, enter passcode: . The display will briefly show CAL and then the
1100, ENTER
ENTER
ENTER . A drift check will begin. The drift check may
. The display will show the new slope and zero (relative to 25 °C and
to end the calibration. Return the sensor to the process. The measured value
to return to the measure mode.
, enter passcode: 1105, . The display will briefly show CAL PRD and then
ENTER
, enter passcode: 1105, to access the product calibration once more. The
ENTER
. The new slope and zero point will be shown.
to end the calibration. Return the sensor to the process. The measured value
to return to the measure mode.
.
ENTER
ARROW keys to select "tyPE A" (Oxy-
.
. The display will show the entered (or
to store the sample value in
ENTER
Edition 2 March 2014