AERECO Humidity And Temperature Ambient Air Sensor Instruction Manual

: June 6, 2024
: AERECO

Table of Contents

DESCRIPTION
APPLICATIONS
WARNINGS
INSTALLATION
STEPS
CAUTION!
TECHNICAL DATA
MAINTENANCE
WARRANTY
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HUMIDITY AND TEMPERATURE
AMBIENT AIR SENSOR
INSTALLATION AND OPERATING INSTRUCTIONS

DESCRIPTION

This sensor measures ambient relative humidity as well as temperature. It miniaturized sensitive element uses a CMOS capacitive relative humidity sensor and a bandgap temperature sensor, for a very precise and stable measurement with very low consumption. The sensor is self-calibrated. Output signal: Analog (0-10V).

APPLICATIONS

HVAC: Demand Controlled Ventilation, fan control, damper control, air conditioning control, Indoor Air Quality level indicator, etc.
BMS: Indoor Air Quality level indicator, Indoor Air Quality monitoring, etc. Especially suitable for rooms where variations of humidity or temperature are relatively important and can be used to drive a system such as ventilation or air conditioning: bedrooms, living room, kitchens, bathrooms.

WARNINGS

PLEASE READ THE FOLLOWING INSTRUCTIONS BEFORE THE INSTALLATION:

In case of non-compliance with advice and warnings contained in this manual, the manufacturer can not be considered responsible for damages to persons or property.
The installation and electrical connections must be carried out by a qualified technician according to the manufacturer’s instructions and in compliance with the characteristics of the product
Before carrying out any operation on the appliance, unplug or disconnect it from the power supply, and ensure it can not be accidentally restored.
Power cable modification or replacement must only be carried out by qualified personnel or by After-sales Service.

INSTALLATION

Sensors must be installed on the wall, at a height of at least 1.5 meters from the floor, or at the ceiling, and must respect the following recommendations:

keep the sensor away from any direct solar radiation,
keep the sensor away from draughts (door, window, supply, etc.),
avoid placing the sensor in dead zones (behind curtains, furniture),
keep the sensor away from heat sources and from occupants
if the sensor is located at the ceiling, keep it away from any air supply unit.

STEPS

Remove the front cover (A).
Unclip the electronic card (B) and the plastic protection (D) from the base (C).
Fix the base (C) by the mean of 2 screws (not supplied). The screws and plug must be chosen according to the type of support.
Connections: use PVC wires S minimum = 0.25 mm² for all the wires. On the electronic card (B), connect the wires as follows:
Connectors| V+| S1| S2| S3| S4| GND
---|---|---|---|---|---|---
Supply(2 wires)| 12 VDC| | | | | 0 V
0-10 V output (2 wires)| | | | 10 V –RH| 10 V – Temp.| 0 V

∙ 0 – 10 V output RH : 0 V = 0 % RH ; 10 V = 100 % RH
∙ 0 – 10 V output T : 0 V = 0°C; 10 V = + 50°C

Clip the electronic card inside the base (C)
Put the cover (A) on the base (C)
Connect the wires to the external devices (12 VDC supply and device driven by 0-10 V output)
Only once all the connections have been made, plug on the supply of the system.

CAUTION!

Chemical vapors at high concentrations in combination with long exposure times may offset the sensor reading. In manufacturing and transport, the sensors shall be prevented from high concentrations of chemical solvents and long exposure times. Out-gassing of glues, adhesive tapes, and stickers or out- gassing
packaging material such as bubble foils, foams, etc. shall be avoided. The manufacturing area shall be well ventilated.

Never connect the 12 VDC supply to S1 or S2 and the 0 V supply to GND, otherwise, S1 and S2 output will be crashed.

Protection is implemented to protect the product in case of wrong connection when the following mistakes occur:

Inversion of the supply wires (GND and V+).
12 V supply connected to S3 and S4 and 0 V supply on GND.

TECHNICAL DATA

Measurement principle| The micro-machined metal oxide semiconductor
(MOS) technology
---|---
Working range| 0°C +50°C 0 % – 100% Relative Humidity
Precision RH| max +/-3 % RH at 25°C, typical +/-2 % on 20 % -80 % range.
Precision temperature| max +/-0,4°C in [5°C ; 60°C] range, typical 0,3°C.
Measuring time interval| 60 s
Supply voltage| 12 V DC +/- 10 %.
Average power consumption| 15 mA
Peak current max.| 1 A (use for fuse sizing)
Storage conditions| 10…50°C 0…60 % RH

Output 0-10 V

Output data| 0 to 10 V 0V = 0% RH ; 10 V = 100% RH
0V = 0°C; 10 V = + 50°C
---|---
Voltage (S3 and S4)| 0 to 10 V
Current (S3 and S4)| 400 mA

MAINTENANCE

Check frequently that the product is clean and remove dust if needed. No calibration is required. Caution: Never touch the sensing element otherwise the detection may be damaged.