HK INSTRUMENTS SIRO-MOD Indoor Air Quality Transmitters User Guide

This document contains information about configuring and using Siro indoor air quality transmitter. Before reading this guide, check that the transmitter has been installed according to the installation instructions.

Siro is available with several optional air quality sensors. The modular device can be equipped with CO₂ concentration and VOC (Volatile Organic Compounds) measurements or alternatively PM (Particulate Matter) measurement, and in addition temperature and humidity measurements. Siro is available with a user interface that includes an LCD display and three pushbuttons. The device is always equipped with voltage outputs, and optionally with Modbus communication and current outputs.

The use and configuration of Siro is simple and easy by following this guide describing a Siro device with a display (-D).

Please note that this guide includes all measurement options. The device menu only shows the options that have been chosen to that particular device. You can find more information about the measurment options in the end of this document.

Schematics

Navigating the Menu

The device’s physical interface includes a display and three pushbuttons.
By using the user interface, it is possible to choose the desired measurement values on the display and to adjust the settings of the device.
Note that when the menu locking jumper is installed, it is not possible to open the menu and the display will not react when pressing the button. Please see the installation instructions for more details about the locking jumper.

The button functions:

Scroll up in the menu / increase the value

Scroll down in the menu / decrease the value

Open the menu / confirm (press shortly) / go back to the basic view (keep the button down/press longer

Menu Structure

Step 1: Choosing the measurement values on the display

Step 1.1: Display View

The basic view on the display is scaled based on how many measurement values have been chosen to be viewed on the display. 1-4 measurement values can be shown simultaneously (see figure 1a). If five or more values are selected, the measurements are shown one by one and the view changes every 10 seconds. Individual measurements can be scrolled in the basic view with and buttons. If the buttons are unused for 30 minutes, the basic view will reappear automatically.

Step 1.2: Choosing the measurement values

For more information about the measurements, please see page 8.

Press to enter the settings menu.
Choose Display values.

Choose the desired measurement values to be shown on the display.
- Scroll the menu by pressing the and buttons.
- Add/remove the desired measurement values by pressing the button.
Choose Exit to exit the menu.
- Scroll the menu to Exit and press to return to the settings menu or keep the button down to return to the basic view.

Step 2: Brightness Control

This adjusts the brightness of the display in stand-by mode.
The brightness of the display is always at the maximum level when the buttons are used.

Press to enter the settings menu.
Choose Brightness.

Adjust the brightness.
- Increase/decrease the brightness by pressing and .

Saving the chosen brightness level and exiting.
- Save the brightness level and return to the settings menu by pressing the button or keep the button down to return to the basic view.
- The chosen brightness level will settle when the buttons have been unpressed for 30 seconds.

Step 3: Modbus Settings (Modbus devices only)

Press to enter the settings menu.

Choose Modbus.
Choose the desired parameters in the Modbus menu.
- The parameters can be scrolled by pressing the and buttons and chosen by pressing .
  Address: 1 – 247 (default = 1)
  Baud rate: 9600 / 19200 / 38400 / 57600
  Parity: none / even / odd
Choose Exit to exit the Modbus menu.
- Scroll to Exit and press to return to the settings menu or keep the button down to return to the basic view.

Step 4: Outputs

The device includes four freely configurable outputs. Current (optional) or voltage output can be chosen for each of them. The output signal has to be chosen first with a jumper (see the installation instructions), after which the output settings can be changed in the Outputs menu.

Press to enter the settings menu.
Choose Outputs.
Choose measurement, scale and limits for each output.
- The menus and limits can be scrolled by pressing the and buttons. Choose the measurement and scale and set the limits by pressing the button.
Choose Exit to exit the Outputs menu.
- Scroll to Exit and press to return to the settings menu or keep the button down to return to the basic view.

Step 5: Offset

The offset feature enables field calibration. This is necessary in applications that need annual calibration.

Press to enter the settings menu.
Choose Offset.
Choose offset value for every measurement.
- The Offset menu and limits can be scrolled by pressing the and buttons. Choose the measurement and set the limits by pressing the button.
  See Table 2 – Offset limits.

Choose Exit to exit the Offset menu.
- Scroll to Exit and press to return to the settings menu or keep the button down to return to the basic view.

Step 6: Info View

Info view is a summary of the information and settings of the device.

Press to enter the settings menu.
Choose Info.
- Scroll by pressing and .
  Page 1: Version number and buildup of the device.
  Page 2-3: Outputs
  Page 4-5: Offsets
  Page 6: Modbus settings (Modbus devices only)*