sauermann Si-C320 User manual

sauermanngroup.com
USER MANUAL
Si-C320
MULTIFUNCTION TRANSMITTER

Table of contents
1. Safety instructions.................................................................................................................................................. 5
1.1 Warnings.......................................................................................................................................................... 5
1.2 Environment protection .................................................................................................................................... 5
1.3 Symbols used ................................................................................................................................................... 5
2. Conformity and standard ....................................................................................................................................... 6
2.1 FCC rules ......................................................................................................................................................... 6
2.2 Canadian standard........................................................................................................................................... 6
3. Introduction ........................................................................................................................................................... 7
3.1 Description of the transmitter ........................................................................................................................... 7
3.1.1 Overall description.................................................................................................................................... 7
3.1.2 Screen description .................................................................................................................................... 7
3.2 Connections..................................................................................................................................................... 8
4. Mounting ............................................................................................................................................................... 9
5. Electrical connections........................................................................................................................................... 10
6. First Start-up ........................................................................................................................................................ 11
6.1 Set the transmitter ......................................................................................................................................... 11
6.2 Connect a probe............................................................................................................................................. 12
6.3 Set a channel ................................................................................................................................................. 12
6.4 Set an output ................................................................................................................................................. 13
6.5 Disconnect a probe......................................................................................................................................... 13
7. Transmitter features ............................................................................................................................................. 14
7.1 General features............................................................................................................................................. 14
7.2 Features of the housing .................................................................................................................................. 14
7.3 Dimensions .................................................................................................................................................... 15
7.4 Possible optional measurements ..................................................................................................................... 15
8. Set the transmitter ............................................................................................................................................... 16
8.1 Set the language............................................................................................................................................ 16
8.2 Set the country............................................................................................................................................... 16
8.3 Set the date, time zone and time .................................................................................................................... 16
8.4 Set the brightness .......................................................................................................................................... 16
9. Set inputs and outputs......................................................................................................................................... 17
9.1 Set the measurement channels ....................................................................................................................... 17
9.2 Set the outputs............................................................................................................................................... 17
9.2.1 Set the analog outputs ........................................................................................................................... 17
9.2.2 Perform an output diagnostic.................................................................................................................. 18
9.2.3 Set the digital output (Modbus RTU) ....................................................................................................... 19
9.3 Set the probes and modules ........................................................................................................................... 19
9.3.1 Normative values.................................................................................................................................... 19
9.3.2 Congure the compensation of a CO2or hygrometry probe ..................................................................... 19
9.3.3 Congure a differential pressure module................................................................................................. 20
9.4 Set the alarms................................................................................................................................................ 22
9.4.1 Set the alarm thresholds......................................................................................................................... 22
9.4.2 Set the alarms parameters ...................................................................................................................... 22
9.5 Set the autozero............................................................................................................................................. 23
9.6 Set the relays (optional).................................................................................................................................. 23
10. Security and connectivity ................................................................................................................................... 25
10.1 Wireless communication ............................................................................................................................... 25
10.2 Dene the security code ............................................................................................................................... 25
10.3 Dene the Touch Lock functionality............................................................................................................... 25
10.4 Reset instrument from factory....................................................................................................................... 25
11. Information about transmitter, probes and modules .......................................................................................... 27

11.1 Instrument and probes/modules information ................................................................................................. 27
11.2 Adjustment and calibration information ........................................................................................................ 27
11.3 Probe update ............................................................................................................................................... 27
12. Modbus.............................................................................................................................................................. 28
12.1 Conguration of parameters......................................................................................................................... 28
12.2 Functions ..................................................................................................................................................... 28
12.3 Data format ................................................................................................................................................. 28
12.4 Description of function and Modbus connections .......................................................................................... 28
12.4.1 Device.................................................................................................................................................. 28
12.4.2 Channels.............................................................................................................................................. 29
12.4.3 Outputs................................................................................................................................................ 30
12.4.4 Alarms ................................................................................................................................................. 30
12.4.5 Probes and module parameters............................................................................................................. 31
12.4.6 Normative values.................................................................................................................................. 35
12.4.7 Alarms ................................................................................................................................................. 35
13. Maintenance and precautions for use................................................................................................................ 36
13.1 Maintenance................................................................................................................................................ 36
13.2 Precautions for use....................................................................................................................................... 36

Safety instructions 5
1. Safety instructions
Before using the device, please read carefully this user manual. It delivers important information about the device
operations, maintenance and storage.
1.1 Warnings
• Interior use.
• Respect the measuring ranges of the probes and modules connected to the transmitter.
• This device has been developed to measure simultaneous parameters including differential pressure, temperature
(Pt100 and thermocouple), hygrometry, air quality (CO/CO2/VOC), air velocity, airow, air change rate. It must not
be used in any other purpose.
• This device has been developed and produced to be sold exclusively to trained and qualied HVACR technicians
and engineers. Appropriate training might be necessary in order to ensure safe use of this instrument. Sauermann
is not responsible for any possible accident during its use.
• Please always use the device in accordance with its intended use and within parameters described in the technical
features in order not to compromise the protection ensured by the device.
• When using the device, the safety of the system integrating the device is the responsibility of the system assembler.
• This device can pose a risk for pacemaker wearers. Respect a distance of at least 10 cm (4") between the device
and the wearer.
• Respect a safety distance with other electronic devices like computers, credit cards, computer or TV screens which
could be damaged by the magnetic eld of the apparel.
• Only the accessories provided with the device or available as an option must be used.
• Do not use the device if it is damaged or if it operates abnormally. Inspect the device before every use. In case of
doubt, please contact Sauermann’s After-sales service.
• Do not authorize pressures beyond the device limits. Please refer to the technical features described in this user
manual.
• The device must not be exposed to rain or any other humid environments (> 85 %RH) without using a proper
protection.
• Do not use the device next to explosive and corrosives gases, vapours or dust.
• Do not place your ngers in movable zones of the device (articulations).
• The device must not be used in ATEX zones according to applicable standards.
• Do not store the device with solvents. Do not use desiccants. Do not use isopropanol.
• During use, keep inspecting the device and accessories for effective operation and your own safety.
• Do not give this product to a child.
• If the device falls or in case of similar inconveniences, or if an irregular malfunction appears, please send back the
device to Sauermann's After-sales service for a technical check and to ensure your own safety.
1.2 Environment protection
Send back the device at its end of working life for waste collection center of electrical and electronic components
(according to local regulations), or send it back to Sauermann to ensure a required waste collection in the respect of
the environment.
1.3 Symbols used
For your safety and in order to avoid any damage of the device, please follow the procedure described in this user
manual and read carefully the notes preceded by the following symbol:
The following symbol will also be used in this user manual:
Please read carefully the information notes indicated after this symbol.
© 2023 SAUERMANN. All rights reserved. Sauermann and Sauermann Control App are the exclusive property of Sauermann. Non contrac-
tual document. The products functionalities and visual appearances can be modied without prior notice. Smartphone or tablet are not
supplied with Sauermann products.

6 Conformity and standard
2. Conformity and standard
The transmitter complies with 2015/863 EU (RoHS 3). Document available on request.
Hereby, Sauermann Industrie SAS declares that the radio equipment type Si-C320 is in compliance with Directive
2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address:
sauermanngroup.com.
2.1 FCC rules
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference's by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected
• Consult the dealer or an experienced radio/TV technician for help.
Changes or modications not expressly approved by Sauermann could voice the user’s authority to operate the
equipment.
This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause interference, and
2. This device must accept any interference received, including interference that may cause undesired operation.
2.2 Canadian standard
This device contains licence-exempt transmitter(s)/receiver(s) that comply with innovation, Science and Economic
Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions:
1. This device may not cause interference
2. This device must accept any interference, including interference that may cause undesired operation of the device.

Introduction 7
3. Introduction
3.1 Description of the transmitter
3.1.1 Overall description
3
4
5
6
7
8
9
1
1 - Touch screen
2 - Access to device settings menu
3 - Transmitter power indicator
4 - Pressure connection
5 - Pressure connection
6 - Cable glands
7 - Probe connection 1
8 - Probe connection 2
9 - Wireless connection light
10 - Access to Graph view
102
3.1.2 Screen description
2
1
3
4 5
61. Channel ID
2. Alarm pictogram
3. Trend indicator
4. Measured value
5. Unit of the measured value
6. Source probe for the channel
Trend indicator:Trend indicator: on the screen, a trend indicator represented by a rising arrow, a going down arrow or a stable ar-
row is displayed on the left of the measurement unit. It means the calculation of a moving average on the last hour
(M1) to compare with a moving average on the last 5 minutes (M2):
• If M1 = M2, the trend is stable.
• If M1 < M2, the trend is upwards.
• If M1 > M2, the trend is downward.
This trend indicator is displayed after 5 minutes.
Alarm pictogram: on the screen, an alarm pictogram is displayed for each channel. Two different pictograms can
be displayed:

8 Introduction
There is no alarm congured and activated for the channel
An alarm is congured and activated for the channel
Channel 2
2
37.5
°C
In case of alarm, the measurement concerned by the alarm will be in red on the screen
Channel 3
ERROR
1
In case of faulty communication with the transmitter, the concerned channel's background
will change to orange. By tapping on the screen a message with additional information
about the problem is displayed.
3.2 Connections
Analog output 3
(OUT 3)
Analog output 4
(OUT 4)
Analog output 1
(OUT 1)
Analog output 2
(OUT 2)
(b)
24 VDC/VAC power supply:
(c)
Phase (L) +
Neutral (N) -
Operational grounding
COM
0/4-20 mA – Current
0-5/10 V – Voltage
COM
0/4-20 mA – Current
0-5/10 V – Voltage
COM
0/4-20 mA – Current
0-5/10 V – Voltage
COM
0/4-20 mA – Current
0-5/10 V – Voltage
RS-485 interface
(a)
B-
A+
0 V
1
2
3
4
5
6
7
8
1 - Connection for PC software
2 - Wireless module (optional)
3 - Pressure module (optional)
4 - Solenoid valve
5 - Autozero
6 - RS-485 connection (a)
7 - Analog outputs (b)
8 - Power supply terminal block (c)

Mounting 9
4. Mounting
The transmitter must be mounted before any wire connections.
The transmitter must not be powered before mounting it.
To install the transmitter on a wall:
• Fix the stainless steel plate to the wall (drilling: Ø 8 mm, screws and wall-plugs supplied).
• Insert the transmitter on the plate (see A on the drawing below) by aligning it at 30°.
• Rotate the housing in clockwise direction until you heard a “click” which conrms that the transmitter is cor-
rectly installed.
• Open the housing, lock the clamping system of the housing on the plate with the screw (see photo below).
The xing screw is in a plastic bag into the box of the C320. type of screw: Cruciform screw Ø 3.5x12 mm
A
A
120 mm (4.73’’)
Ø 5,4 mm (0.21’’)
65 mm (2.56’’)
65 mm (2.56’’)
98 mm (3.86’’)
To remove the transmitter from the xing plate, do not forget to remove this screw.
Fixing screw of the housing

10 Electrical connections
5. Electrical connections
Electrical connections are as per NF C 15-100 standard.
This connection must be made by a trained and qualied technician. Whilst making the connec-
tion, the transmitter must not be energized. The presence of a switch or a circuit breaker up-
stream the device is compulsory.
-
+
-+
24 VDC
power supply
NL
Pe
N
L
240 VAC
N
L
24 VAC power supply
Class II
NL
Pe
N
L
240 VAC L
24 VAC power supply
or
N
COM
0/4-20 mA
0-5/10 V
-+
Regulator display or
PLC/BMS (passive type)
COM
0/4-20 mA
0-5/10 V
-+
Regulator display or
PLC/BMS (passive type)
For 24 VDC models: For 24 VAC models using power supply converters:
0/4-20 mA current output connection: 0-5/10 V voltage output connection: