esera automation Multisensor 11132 Gen2 Podręcznik użytkownika - Strona 2
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The 1-Wire Multisensor is integrated into a 1-Wire network using screwless pressure clamps.
The 1-Wire multi-sensor has a 1-Wire interface of type DS2438. Each 1-Wire multi-sensor has an individual serial
number.
This 1-Wire Multisensor has an integrated measuring function for temperature, humidity, brightness and
operating voltage.
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Why measure humidity?
Room air always contains moisture in the form of water vapour. The relative humidity is decisive for a pleasant
living climate. During the heating period, 35 to 45 % relative humidity can be regarded as optimal. Values above
45 to 55% may already lead to the formation of mould in a poor building envelope. For health reasons, values
below 20 % should be avoided if possible.
The absolute humidity indicates how many grams of water vapour are dissolved in one cubic meter of air.
The warmer the air, the more water it can absorb. The relative humidity says, with how much percent the room-air
is enriched with humidity.One speaks of air completely saturated with humidity when the relative humidity is
100 %. Beyond that the air cannot take up any further humidity. If even more moisture is added, the water vapour
condenses and droplets form. In nature this phenomenon leads to fog formation, in heated rooms the water
vapour from the room air precipitates on cold surfaces. There is a risk of mold growth here.
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Software / Control
The 1-Wire Multisensor is read by 1-Wire command for DS2438 devices and is supported by many computer
programs like Loxone SPS, WAGO SPS (via OWOS), OWFS, FHEM (Linux), IP-Symcon or microcontroller
applications.
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Technical data
1-Wire interface:
Measuring range temp.:
Accuracy temperature:
Resolution:
Humidity sensor:
Measuring range humidity: 0-100% rel. humidity
Humidity accuracy:
Brightness sensor:
Measuring range:
Accuracy Lux:
Operating voltage:
Power consumption:
Connection:
6
Environmental conditions
Protection system:
Protection class:
Temperature operation of complete sensor: operation -25°C to 60°C
Humidity:
Dimensions (outside):
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Conformity
EN 50090-2-2, EN 61000-4-2 ESD, EN 61000-4-3 HF, EN 61000-4-4 Burst, EN 61000-4-5 Surge, EN 61000-6-1
Immunity, EN 61000-6-3 Interference, RoHS
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Calculation
The following formula can be used to evaluate the humidity sensor.
VDD = operating voltage (5V), VAD = analog input DS2438, Xsense = brightness DS2438.
Humidity calculation (simplified formula)
Offset = 0.847847 (Zero Offset V), slope = 29.404604 (Slope: mV/%RH)
Srh = (VAD_neu - offset) / (slope / 1000)
rFH = (Srh + 2)/ ((1.0305 + (0.000044 * temperature) - (0.0000011 * temperature x 10²)))))))
For Loxone control:
I1 = VAD value, I3 = temperature
(((((5/I2*I1)-0.847847)/(29.404604/1000))+2)/((1.0305+(0.000044*I3)-(0.0000011*I3^2))))
All rights reserved. Reproduction as well as electronic duplication of this user guide, complete or in part, requires the written consent of
ESERA GmbH. Errors and technical modification subject to change. ESERA GmbH, ESERA-Automation 2020
www.esera.de
DS2438, Multisensor for temperature, humidity, brightness and operating voltage
-55°C to +60°C (sensor element: -55°C to +125°C)
+/- 0,5° in the range of -10°C - 85°C
9 Bit, 0.03125°C/Bit
Capacitive sensor Honeywell
+/-3.5 % (10-85% RH), +/-7% (<10% and >85% RH)
Sensor adapted to the sensitivity of the human eye
2 - 7000 Lux
+/-20% in the range up to approx. 200 Lux, +/-15% in the range up to 7000 Lux
5 V= (+/-10%)
approx. 2 mA
push-in terminal (screwless terminal)
IP00
III
10 - 90% (non-condensing)
71 x 71 x 32mm (LxWxH)
11132 V2.0 R1.0 Manual
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