KIMO Si-CPE320 Multifunction Panel Transmitter
User Manual
Kimo, a Sauermann brand.
Website: sauermanngroup.com
1. Safety Instructions
Before using the device, please read this user manual carefully. It provides important information about device operations, maintenance, and storage.
1.1 Warnings
- For indoor use only.
- Respect the measuring ranges of connected probes and modules.
- This device measures parameters like differential pressure, temperature, hygrometry, air quality (CO/CO2/VOC), air velocity, airflow, and air change rate. It must not be used for other purposes.
- Developed for trained and qualified HVACR technicians and engineers. Appropriate training may be necessary for safe use. Sauermann is not responsible for accidents during use.
- Always use the device as intended and within specified parameters to ensure protection.
- System integrators are responsible for the safety of the system incorporating the device.
- Risk for pacemaker wearers: maintain at least 10 cm (4") distance.
- Maintain safety distance from other electronic devices (computers, credit cards, screens) that could be damaged by magnetic fields.
- Use only provided or optional accessories.
- Do not use if damaged or operating abnormally. Inspect before each use. Contact Sauermann After-sales service if in doubt.
- Do not exceed device pressure limits.
- Do not expose to rain or humid environments (> 85 %RH) without proper protection.
- Do not use near explosive or corrosive gases, vapors, or dust.
- Keep fingers away from movable zones (articulations).
- Not for use in ATEX zones.
- Do not store with solvents. Do not use desiccants or isopropanol.
- Continuously monitor device and accessories during use for safety and effective operation.
- Keep out of reach of children.
- If the device falls or malfunctions, return it to Sauermann's After-sales service for a technical check.
1.2 Environment Protection
Return the device at its end of working life to an authorized waste collection center for electrical and electronic components, or send it back to Sauermann for proper disposal.
1.3 Symbols Used
Follow procedures and notes preceded by the following symbols:
- ⚠️: Warning - for safety and to avoid device damage.
- ℹ️: Information - read carefully.
© 2023 SAUERMANN. All rights reserved. Sauermann and Sauermann Control App are exclusive properties of Sauermann. Non-contractual document. Product functionalities and appearances may change without notice. Smartphones or tablets are not supplied.
2. Conformity and Standard
The transmitter complies with 2015/863 EU (RoHS 3). Sauermann Industrie SAS declares compliance with Directive 2014/53/EU for radio equipment type Si-CPE320. Full EU declaration of conformity available at sauermanngroup.com.
2.1 FCC Rules
Tested and compliant with Class B digital device limits (FCC Part 15). Designed for reasonable protection against harmful interference in residential installations. May cause interference if not used as instructed. Users are encouraged to correct interference by reorienting antennas, increasing separation, using different outlets, or consulting a technician. Modifications not expressly approved by Sauermann may void user authority. Operation is subject to two conditions: no harmful interference caused, and acceptance of any received interference.
2.2 Canadian Standard
Contains licence-exempt transmitter(s)/receiver(s) complying with Innovation, Science and Economic Development Canada's licence-exempt RSS(s). Operation is subject to two conditions: no harmful interference caused, and acceptance of any received interference.
3. Introduction
3.1 Description of the Transmitter
3.1.1 Overall Description
The device is a panel transmitter featuring a touchscreen display. Key components include:
- 1 - Touch screen
- 2 - Access to device settings menu
- 3 - Software connection port
- 4 - Transmitter power indicator
- 5 - Wireless connection indicator
- 6 - Front pressure connector (+)
- 7 - Front pressure connector (-)
- 8 - Probe connector
3.1.2 Screen Description
The screen displays measurement data and status indicators:
- 1. Channel ID
- 2. Alarm pictogram (⚠️ or no icon)
- 3. Trend indicator (↑, ↓, or stable arrow)
- 4. Measured value
- 5. Unit of the measured value
Trend Indicator: Compares moving averages over the last hour (M1) and last 5 minutes (M2). A rising arrow indicates an upward trend (M1 < M2), a falling arrow indicates a downward trend (M1 > M2), and a stable arrow indicates no change (M1 = M2). Displayed after 5 minutes.
Alarm Pictogram: Indicates alarm status. A bell icon signifies an active alarm. When an alarm is active, the channel background turns red. If an error occurs, the background turns orange, and tapping the screen provides more information.
3.2 Connections
The transmitter features terminal blocks for pressure connections (front +/-), Modbus communication, and power supply (24 VAC/VDC or 230 VAC). It also has three analog output terminals (OUT1, OUT2, OUT3) supporting 0-5/10 V or 0/4-20 mA current outputs.
4. Mounting
The transmitter must be mounted before wiring and powering. For wall installation:
- Cut a 200 x 82 mm opening in the wall.
- Drill 4 holes around the opening.
- Insert the transmitter into the wall.
- Fix with the 4 provided screws (Cruciform screw, Ø 3.5 x 12 mm).
A cut-out depth of 45 mm (1.77") is required. Use silicone sealant for isolation between the wall and the transmitter, ensuring VHP resistance if applicable.
5. Electrical Connections
Connections must be made by a qualified technician according to NF C 15-100 standard. The transmitter must not be energized during connection. A switch or circuit breaker upstream is compulsory.
Power Supply Terminal Block: Supports 24 VDC, 24 VAC, or 230 VAC. Terminals are labeled for Phase (L), Neutral (N), and Ground (Pe).
Output Terminals (OUT1, OUT2, OUT3): Support 0-5/10 V voltage output or 0/4-20 mA current output. Connections are shown for regulator display or PLC/BMS integration.
6. First Start-up
Initial setup requires configuring transmitter parameters via the touchscreen.
6.1 Set the Transmitter
Tap "Start Settings" on the welcome screen. Follow prompts to:
- Select Language (English, French, Spanish, Italian, German, Portuguese, Chinese available).
- Select Continent and then Country.
- Set Time, Time Zone (examples provided), and Date.
The transmitter is now set up and ready for probe connection.
6.2 Connect a Probe
Remove the protection cap from the transmitter connector. Align the probe connector (a) with its arrow and padlock face to the transmitter connector (b) and push until it clicks. An arrow (c) on air velocity probes should face the airflow.
6.3 Set a Channel
After connecting a probe, navigate to "I/O Configurations" > "Channels". Select the desired channel (1, 2, or 3). Tap "PROBE 1" or "MODULE" to assign the connected device. Then, select "Measures" to choose the parameter, "Units" for the measurement unit, and configure "Coefficient" and "Offset" if needed. The channel is automatically activated.
Note: For VOC probes, selecting "ppm CO2 equivalent" may require a 15-minute pre-heating phase.
Channel names can be edited (max 13 characters).
6.4 Set an Output
Navigate to "I/O Configurations" > "Outputs" > "Analog Outputs". Select the output (1, 2, or 3) to configure. Activate the output by tapping the icon. Choose the "Output Type" (0-5 V, 0-10 V, 0-20 mA, or 4-20 mA). Define the "High Range" and "Low Range" values. Tap "Next" to display measurements.
6.5 Disconnect a Probe
To disconnect a probe, turn the ring (c) on the probe connector to the left and pull the connector (a) away from the transmitter connector (b).
7. Transmitter Features
7.1 General Features
| Feature | Value |
|---|---|
| Power supply | 24 VAC/VDC ±10% |
| Outputs | 3 x 0/4-20 mA or 3 x 0-5/10 V (4 wires) |
| Common mode voltage | Maximum load: 500 Ω (0/4-20 mA), Minimum load: 1 KΩ (0-5/10 V) |
| Galvanic isolation | On the output |
| Consumption | 15 VA |
| Electrical connections | Screw terminal block (0.05 to 1.5 mm² or 30 to 16 AWG) |
| Communication RS485 | Modbus RTU protocol, configurable speed (2400 to 115,200 Bauds) |
| Wireless communication (option) | 2402-2480 MHz, up to 15 m range. Requires Android 5.0, iOS 12.4, BLE 4.0. |
| Audible alarm | Buzzer (60 dB at 10 cm) |
| Environment and type of fluid | Air and neutral gases |
| Conditions of use | -10 to 50 °C (14 to 122 °F) non-condensing; 0 to 2000 m (0 to 6561') altitude. |
| Storage temperature | -10 to 70 °C (14 to 158 °F) |
| Security | Protection class 2, Pollution degree 2, Overvoltage category 2 |
| European directives | 2014/30/EU EMC, 2014/35/EU Low Voltage, 2014/53/EU RED, 2015/863 EU RoHS 3, 2012/19/EU WEEE |
7.2 Features of the Housing
- Front face: Brushed stainless steel 316 L
- Back housing: ABS V0
- Protection: IP66 (front face), VHP resistant
- Display: Graphic touchscreen (480 x 272 pixels)
- Height of digits: 14 mm (0.56")
- Back fittings: Barbed fitting Ø 5.2 mm (0.2")
- Weight: 684.4 g (1.5 lb)
7.3 Dimensions
Overall dimensions are approximately 234 mm (height) x 100 mm (width) x 80 mm (depth). Cut-out dimensions for wall mounting are 200 x 82 mm with a depth of 45 mm.
7.4 Possible Optional Measurements
| Probes / modules | Measuring ranges | Calculated parameters |
|---|---|---|
| Relative humidity / temperature probe | 0 to 100 %RH and -40 to 150 °C (-40 to 302 °F) | Dew point, Wet-bulb temperature, Frost point, Enthalpy, Absolute humidity, Mixing Ratio |
| Temperature probe | -80 to 150 °C (-112 to 302 °F) | N/A |
| Air velocity / temperature probe | 0 to 30 m/s (0 to 98.4 fps) and 0 to 50 °C (32 to 122 °F) | Air flow, Air change rate |
| CO probe | 0 to 500 ppm | N/A |
| CO2 probe | 0 to 10,000 ppm | N/A |
| VOC probe | TVOC: 0 to 1000 ppb, CO2eq: 400 to 2000 ppm | N/A |
8. Set the Transmitter
Access "Device Settings" via the measurement screen (tap the gear icon ⚙️) and enter the security code (default 0101).
8.1 Set the Language
Navigate to "Device Settings" > "Languages" and select the desired language.
8.2 Set the Country
Navigate to "Device Settings" > "Country", select the continent, then the country.
8.3 Set the Date, Time Zone and Time
Navigate to "Device Settings" > "Date, Time Zone, ..." and adjust "Date", "Time", or "Time zone" as needed.
8.4 Set the Brightness
Navigate to "Device Settings" > "Brightness" and adjust the screen brightness from 1 to 5.
9. Set Inputs and Outputs
Access "I/O Configurations" via the measurement screen (tap the gear icon ⚙️) and enter the security code (default 0101).
9.1 Set the Measurement Channels
In "I/O Configurations", tap "Channels". Select a channel (1, 2, or 3). Assign a "PROBE" or "MODULE". Select "Measures" to choose the parameter and "Units" for the unit. Coefficients and offsets can also be entered.
Channel names can be edited (max 13 characters).
9.2 Set the Outputs
Two types of outputs are available: analog and digital.
9.2.1 Set the Analog Outputs
At least one measurement channel must be configured. In "I/O Configurations", tap "Outputs" > "Analog Outputs". Select an output (1, 2, or 3). Activate it, then select "Output Type" (0-5 V, 0-10 V, 0-20 mA, 4-20 mA). Define "High Range" and "Low Range" values.
9.2.2 Perform an Output Diagnostic
This function checks output operation. The transmitter generates a voltage or current signal based on the output type setting. Before performing, ensure all connections and configurations are enabled. Select an output (OUT1, OUT2, OUT3) and connect a measurement device (multimeter). Navigate to "I/O Configurations" > "Outputs" > "Analog Outputs" > "Diagnostic".
9.2.3 Set the Digital Output (Modbus RTU)
In "I/O Configurations", tap "Outputs" > "Digital Outputs". Set the "Slave address" (1-255) and "Baud rate" (2400 to 115,200 bps; default 9600).
9.3 Set the Probes and the Pressure Module
This section configures parameters related to connected probes and modules.
9.3.1 Normative Values
For airflow calculations, convert values to normative values (Nm³/h) using DIN 1343 or ISO 2533 standards. Access via "I/O Configurations" > "Parameters" > "Normative values".
9.3.2 Set the Autozero
Autozero ensures long-term stability and measurement accuracy by compensating for gain drift. Set the "Autozero interval" (10-60 minutes). The device automatically manages autozero cycles based on temperature and time since startup.
9.3.3 Configure Compensation for CO2, CO, or Hygrometry Probes
Requires a connected probe. Set "Atmo pressure" compensation by selecting the unit and entering a value within the specified range (e.g., 0-4000 hPa). Access via "I/O Configurations" > "Parameters".
9.3.4 Configure the Differential Pressure Module
Select the measuring device type (Pitot tube S/L, Debimo blades, or other). Configure duct section shape (Rectangular, Circular) and dimensions (length, width, diameter) or flow coefficient. Airflow calculations use pressure difference and a coefficient. Temperature compensation can be set using an internal sensor, manual input, or a connected probe.
9.4 Set the Alarms
Activate and define alarm conditions. At least one channel must be configured.
9.4.1 Set the Alarm Thresholds
In "I/O Configurations", tap "Alarms". Select an alarm, set "Threshold up" (high) and "Threshold down" (low) values. Activate the alarm.
9.4.2 Set the Alarms Parameters
Configure "Time delay" (0-600s), "Hysteresis" (positive value between thresholds), and "Acknowledgement duration" (0-60 min).
9.5 Apply a Slope and Offset to Probes and Pressure Module
In "I/O Configurations", tap "Probes & Modules". Select the probe/module, then "Unit". Enter a "coefficient" or "offset" to apply to all connected devices.
10. Security and Connectivity
Manage wireless communication, security code, and touch lock functionality.
Access this menu via the measurement screen (tap the gear icon ⚙️) and enter the security code (default 0101).
10.1 Wireless Communication
Activate or deactivate wireless communication to use the Sauermann Control app.
10.2 Define the Security Code
Set a 4-digit security code for configuration. Default is 0101. Access via "Security/Connectivity" > "Security code".
10.3 Define the Touch Lock Functionality
Lock the screen after a period of non-use. Unlock by tapping the lock icon for 3 seconds. Set "Lock delay" in "Security/Connectivity" > "Touch lock".
10.4 Reset Instrument from Factory
Reset the transmitter to factory default settings. Access via "Security/Connectivity" > "Reset Instrument From Factory". All configurations will be deleted.
11. Information about Transmitter, Probes and Module
Access information via the measurement screen (tap the gear icon ⚙️), enter security code, then tap "Information".
11.1 Instrument, Probes and Module Information
View Model, S/N (Serial Number), Build, and Firmware version.
11.2 Adjustment and Calibration Information
View last adjustment date, last calibration date, and date of next service for probes and modules.
11.3 Probe Update
Check for and install firmware updates for probes. Installing an update may restart the transmitter.
12. Modbus
12.1 Configuration of Parameters
- Communication speed: 2400 to 115200 bauds (default 9600).
- Data bits: 8.
- Stop bit: 1.
- Parity: None.
- Flow control: None.
- Transmitter addressing: 1 to 255.
- Data sending: 2-byte words (most-significant then least-significant byte).
12.2 Functions
- Register function: 03.
- Register writing: 16.
- Communication loop test: 08.
12.3 Data Format
Describes data formats for UNIT8, UNIT16, UNIT32, and FLOAT32, including byte order and register mapping.
12.4 Enumeration Table
12.4.1 Languages Enumeration
| Identifier | Language |
|---|---|
| 0 | English |
| 1 | French |
| 2 | Spanish |
| 3 | Italian |
| 4 | German |
| 5 | Portuguese |
| 6 | Chinese |
| 7 | Dutch |
12.4.2 Units Enumeration
| Identifier | Unit | Identifier | Unit |
|---|---|---|---|
| 0 | °C | 29 | t/d |
| 1 | °F | 30 | cm² |
| 2 | mbar | 31 | in² |
| 3 | inwg | 32 | m³ |
| 4 | mmH2O | 33 | cf |
| 5 | mmHg | 34 | %RH |
| 6 | Pa | 35 | kJ/kg |
| 7 | hPa | 36 | m |
| 8 | kPa | 37 | mm |
| 9 | psi | 38 | ft³/h |
| 10 | ppm | 39 | in |
| 11 | ppb | 40 | % |
| 12 | mg/m³ | 41 | ratio |
| 13 | g/m³ | 42 | °Ctw |
| 14 | % | 43 | °Ftw |
| 15 | mg/kWh | 44 | °Ctd |
| 16 | g/kWh | 45 | °Ftd |
| 17 | g/GJ | 46 | unused |
| 18 | g/bhp-hr | 47 | unused |
| 19 | m/s | 48 | g/kg |
| 20 | fps | 49 | ACH |
| 21 | fpm | 50 | V |
| 22 | km/h | 51 | mA |
| 23 | m³/min | 52 | daPa |
| 24 | m³/h | 53 | m³/s |
| 25 | cfm | 54 | dam³/h |
| 26 | ft³/h | 55 | l/s |
| 27 | kg/h | 56 | fps |
| 28 | lb/h |
12.4.3 Measurements Enumeration
| Identifier | Unit | Identifier | Unit |
|---|---|---|---|
| 0 | Temperature (internal NTC) | 13 | VOC |
| 1 | Temperature (Pt100) | 14 | CO2eq |
| 2 | Relative humidity | 15 | Air flow |
| 3 | Air velocity | 16 | ACR |
| 4 | Pressure (module 50 Pa) | 17 | Mixing ratio |
| 5 | Pressure (module 250 Pa) | 18 | Absolute humidity |
| 6 | Pressure (module 1000 Pa) | 19 | Enthalpy |
| 7 | Pressure (module 10000 Pa) | 20 | Wet bulb temperature |
| 8 | CO | 21 | Atmo pressure |
| 9 | CO2 | 22 | Battery level |
| 10 | Temperature (TK) | 23 | Temperature (external NTC) |
| 11 | Dew point | 24 | Vacuum |
| 12 | Frost point | 25 | Air velocity |
12.4.4 Other Enumeration
| Identifier | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|---|
| Modbus |
12.5 Description of Function and Modbus Connections
12.5.1 Device
Details Modbus registers for device information like serial number, firmware version, identification, and settings.
12.5.2 Channels
Details Modbus registers for channel configuration, including unit selection, probe/module assignment, measure selection, resolution, coefficient, and offset for channels 1, 2, and 3.
12.5.3 Outputs
Details Modbus registers for analog output selection (0-5 V, 0-10 V, 0-20 mA, 4-20 mA) and diagnostic functions for channels 1, 2, and 3.
12.5.4 Alarms Parameters
Details Modbus registers for alarm configuration (mode, hysteresis, thresholds, delay time, enabled/disabled status, audible alarm, acknowledgment duration) for up to three alarms.
12.5.5 Probes and Module Parameters
Details Modbus registers for probe-specific parameters like range limits, atmospheric pressure compensation, equipment type, custom coefficients, room volume, measurement integration, temperature compensation mode, manual temperature settings, correction factors, duct section type and dimensions, and airflow coefficient.
12.5.6 Normative Values
Details Modbus register for normative value selection.
12.5.7 Measurement Alarms
Details Modbus registers for alarm status (raised, measured value, status, trend, error reason) for channels 1, 2, and 3.
13. Maintenance and Precautions for Use
13.1 Maintenance
Avoid aggressive solvents. Protect the transmitter and probes from cleaning products containing formalin.
13.2 Precautions for Use
Always use the device in accordance with its intended use and within the parameters described in this manual to ensure proper protection.
Sauermann Group Locations
Sauermann Industrie (France)
ZA Bernard Moulinet, 24700 Montpon-Ménestérol, France. T. +33 (0)5 53 80 85 00, services@sauermanngroup.com
Sauermann NA (USA)
10 W. College Avenue, Unit B, Yardley, Pennsylvania 19067. T. (+1) 215-750-1212
Sauermann GmbH (Germany)
Leibnizstraße 6, D-74211 Leingarten. T. +49 (0)7131/399990, F. +49 (0)7131/399992
Sauermann Ibérica (Spain)
C/Albert Einstein 33, Planta 3, P. I. Santa Margarida II, 08223 Terrassa (Spain). T. +34 931 016 975
Sauermann Australia
Unit 1/36 Campbell Ave, Cromer, NSW, 2099. T. (+612) 8880 4631
Sauermann UK
Units 7-9, Trident Business Park, Amy Johnson Way, Blackpool - FY4 2RP. T. +44 (0) 870 950 6378, F. +44 (0) 870 950 6379
Sauermann China
Room 209, Building 7, No. 3000 Longdong Ave., Pudong New District, Shanghai 201203, R.P. China. T. (+86) 21 6100 1877
Sauermann Italia srl S.U
Via G. Golini 61/10, 40024 Castel S.Pietro Terme (BO). T. (+39)-051-6951033, F. (+39)-051-942254
⚠️ BE CAREFUL! Material damages can happen, so please apply the precautionary measures indicated.
