PROTRONIX NLII-RH+T-IQRF Combined RH/Temperature Sensor with IQRF User Manual

SENSE & EASY
User manual

NLII-RH+T-IQRF | Combined RH/temperature sensor with IQRF

Room sensor NLII-RH is used to continuously monitor the air quality inside buildings and then control ventilation (HVAC) systems according to current levels of air pollution. The sensor measures relative humidity (RH) and temperature (T). It is suitable for living rooms, bathrooms, warehouses, ateliers, etc.
measures RH and temperature
2x analog voltage/current output
IQRF wireless communication
maintenance during operation is not required
long life and stability

Sensor type / order code	RH output	T output	SIM slot	IQRF module
NLII-RH+T-IQRF	0-10 V/0-20 mA/4-20 mA¹⁾	0-10 V/0-20 mA/4-20 mA¹⁾	*	–
NLII-RH+T-IQRF+	0-10 V/0-20 mA/4-20 mA¹⁾	0-10 V/0-20 mA/4-20 mA¹⁾	*	*

1) It is possible to select the desired type of analog output by a jumper on the electronics board.

Contents hide

5 Documents / Resources

5.1 References

6 Related Posts

Description

Measurement of the relative humidity is based on the principle of capacitive polymer sensor.
The sensor has built-in two separate analog outputs -one for the actual temperature and the other for the actual relative humidity.
So the sensor efficiently manages ventilation and heat recovery units, based on current room air quality.
The current air quality can easily be determined by looking at the three LED indicators. The eco level means good indoor air quality necessary to achieve a sense of well-being and at the same time optimal energy costs for heating, ventilation, or air conditioning.
For detailed information about IQRF, use the document NLII-IQRF-Communication. For information on the communication protocol, use the document NLII-Modbus-Communication.
Explanation of abbreviations and technical terms can be found on our website in the Glossary section.

Technical data

Parameter	Value	Unit
Supply voltage range	12 – 35 12 – 24	V DC V AC
Average consumption	0,2	W
RH measuring range	0 – 100 %	RH
RH accuracy 20 – 80 %	± 3 %	RH
RH accuracy 0 – 100 %	± 6 %	RH
T measuring range	0 – 50	°C
T accuracy	± 0,4	°C
Working temperature	0 to +50	°C
Working humidity non-condensing	0 – 90 %	RH
Storage temperature	-20 to +60	°C
Expected lifetime	min. 10	years
Ingress protection	IP20
Dimensions	90x80x31	mm

Analog output values versus actual RH

Typical RH measurement accuracy at 25 °C

Analog output values versus actual T

Typical T measurement accuracy

LED indication description
White LED lights:
Less than 40 % RH or less than 18 °C. (according to the quantity selected for indication)
– low concentrations of RH. Too dry air feels cooler as compared to equally hot but more humid air – the risk of drying of the mucous membranes – respiratory problems
– low temperature and its higher fluctuation is not economically profitable

Green LED lights:
More than or equal to 40 % RH or 18 °C, less than or equal to 60 % RH or 22 °C. (according to the quantity selected for indication)
– optimal relative humidity for humans
– the optimal balance of air quality and energy efficiency of ventilation and air conditioning

Yellow LED lights:
More than 60 % RH or more than 22 °C. (according to the quantity selected for indication)
– too high humidity, the risk of mold growth, and associated health complications
– higher temperature T – the high temperature can cause fatigue, restlessness, headache, and feel hot

Sensor start after power on
All three LEDs flash simultaneously until the first readings are available, but no longer than 10 seconds.

Sensor failure indication
All three LEDs are shining permanently.

CAUTION:
Warm-up: operational after 1 minute since power on.
The declared accuracy is reached after 4 days of continuous power supply.
It is necessary to avoid the severe mechanical shock of the sensor.

Electronic board controls and terminals

Terminals
1. ~ + supply AC or DC (+) plus pole
2. ~ GND supply AC or DC (-) minus pole, GND
3. OUT1 T sensor analog output, 0-10 V or 0-20 mA or 4-20 mA
4. GND T sensor output GND
5. OUT2 RH sensor analog output, 0-10 V or 0-20 mA or 4-20 mA
6. GND RH sensor output GND

Jumpers
JP1 – Current output offset RH
JP2 – Current output offset T
JP3 – Voltage/current output T
JP4 – Voltage/current output RH
JP6 – LED indication settings

Jumpers on the electronics board

Mark	Description	Settings	Meaning
JP1	Current output offset RH – shift quiescent current from 0 mA to 4 mA		current output RH 0-20 mA
JP1			current output RH 4-20 mA
JP2	Current output offset T – shift quiescent current from 0 mA to 4 mA		current output T 0-20 mA
JP2			current output T 4-20 mA
JP3	Voltage/current output T – select the type of analog output – if voltage output T is selected, JP2 must not be shorted		voltage output T
JP3			current output T
JP4	Voltage/current output RH – select the type of analog output – if voltage output RH is selected, JP1 must not be shorted		voltage output RH
JP4			current output RH
JP6 – 1 JP6 – 3	LED indication LED signalization by VOC or RH – LED indication according to ambient light – when ambient light is dimmed (at night), LED indicators to turn off automatically. – factory setting is an indication by VOC		LED indication by VOC LED indication according to ambient light
JP6 – 1 JP6 – 3			LED indication by RH permanent LED indication enabled
JP6 – 2 JP6 – 4 JP6 – 5	These positions are not intended for user settings.

Factory settings

LED indication: by RH, indication turns off when ambient light dims
T analog output: voltage output
RH analog output: voltage output

Example of RH sensor connection for direct EC motor control using 0-10 V signal

If you connect other devices to the same AC power source as the NL sensor, it is necessary to meet the GND wiring of all analog inputs and outputs, as well as power wires.