S+S Regeltechnik HYGRASGARD AFTM-LQ-CO2-Modbus Manual

G
®
HYGRASGARD
The maintenance-free microprocessor-controlled on-wall or duct sensor with Modbus connection with/without optional display is an all-in-one device used
for detecting all relevant measured values, such as humidity, temperature, CO
and control of the entire room climate. It measures CO
/ HIGH, temperatures in the range from –35...+80 °C as well as relative air humidity of 0...100 % r.H. Relative humidity (% r.H.) is the quotient of water
vapour partial pressure divided by the saturation vapour pressure at the respective gas temperature. A digital, long-term stable sensor as a measuring
element for relative humidity and temperature guarantees exact measurement results. The CO
sensor (non-dispersive infra-red technology). The detection range of the sensors is calibrated for standard applications such as monitoring residential
rooms and conference rooms. Room ventilation on an as-needed basis, improved well-being and customer benefit, increased comfort as well as reduced
operating costs through energy conservation are just some of the benefits of employing the AERASGARD
there are applications for CO
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crucial factor in this respect is that both of these measurands are not convertible into each other and derivations to or from one another cannot be made.
An NDIR - CO measuring instrument measures selectively and cannot detect any VOCs; a VOC mixed gas sensor cannot detect CO
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TECHNICAL DATA
Power supply:
Power consumption:
Data points:
HUMIDIT Y
Sensors:
Sensor protection:
Measuring range, humidity:
Operating range, humidity:
Deviation humidity:
TEMPERATURE
Measuring range, temperature: –35...+80 °C
Operating range, temperature:
Deviation, temperature:
AIR QUALIT Y (VOC)
VOC sensor:
VOC measuring range:
VOC measuring accuracy:
Service life:
CARBON DIOXIDE (CO )
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CO sensor:
2
CO measuring range:
2
CO measuring accuracy:
2
CO temperature dependence:
2
Pressure dependence:
Long-term stability:
Gas exchange:
Bus parameters:
Bus interface:
Bus protocol:
Baud rate:
Status indicator:
Signal filtering:
Ambient temperature:
Response time:
Electrical connection:
Enclosure:
Enclosure dimensions:
Cable gland:
Protective tube:
Process connection:
Protection class:
Protection type:
Standards:
Optional:
AFTM- ⁄ KFTM - LQ - CO
in the range from 0...5000 ppm, VOC in one of three selectable sensitivity levels LOW / MEDIUM
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measurements, for VOC measurements, but from our perspective, above all, for a combination of both measurands. The
24 V AC ⁄ DC (± 10 %)
< 4.8 W ⁄ 24 V DC typical; < 6.8 VA ⁄ 24 V AC typical; peak current 200 mA
temperature, relative humidity, air quality (VOC), carbon dioxide (CO
digital humidity sensor with integrated temperature sensor, low hysteresis, high long-term stability
plastic sinter filter, Ø 16 mm, L = 35 mm, exchangeable (optional metal sinter filter, Ø 16 mm, L = 32 mm)
0...100 % r. H.
0...95 % r. H. (non-precipitating air)
typically ± 2.0 % (20...80 % r. H.) at +25 °C, otherwise ± 3.0 %
–10...+60 °C
± 0.2 K at +25 °C
VOC sensor (metal oxide) with automatic calibration (VOC = volatile organic compounds)
0...100 % air quality; with reference to calibration gas; multi-range switching VOC sensitivity low, medium, high
± 20 % final value (with reference to the calibration gas)
> 60 months (under normal load conditions)
Optical NDIR sensor (non-dispersive infra-red technology) incl. atmospheric air pressure compensation (up to 1100 mbar)
with automatic and manual calibration
0...5000 ppm
± 30 ppm ± 3 % of measured value
± 5 ppm ⁄ °C or ± 0.5 % of measured value ⁄ °C (whichever is the greater)
± 0.13 % ⁄ mm Hg
< 2 % in 15 years
by diffusion
In the absence of current delivery (under currentless conditions) can be configured and addressed via DIP switch!
RS 485, galvanically isolated, bus termination can be activated via DIP switch. Up to 32 devices possible in one segment.
In case of a greater number of devices, RS 485 transceivers must be used.
Modbus (RTU-Mode), address range 0...247 selectable
9600, 19200, 38400 Baud
Green LED = Telegram valid / red LED = Telegram error
4 s / 32 s
–10...+60 °C
< 2 minutes
0.2 - 1.5 mm 2 , via push-in terminal
plastic, UV-stabilised, material polyamide, 30 % glass-globe reinforced, with quick-locking screws (slotted ⁄
Phillips head combination), colour traffic white (similar to RAL 9016),,enclosure cover for display is transparent!
126 x 90 x 50 mm (Tyr 2)
2x M 16 x 1.5; including strain relief, exchangeable
KCO / KLQ - CO / KFTM - CO
2 2
TM
PLEUROFORM , material: polyamide (PA6), with torsion protection, v
without filter: NL = 202.5 mm, with plastic sinter filter: NL = 235 mm (optional with metal sinter filter: NL = 227 mm)
AFTM - CO / AFTM - LQ - CO
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in stainless steel, Ø 16 mm, with plastic sinter filter: NL = 55 mm (optional with metal sinter filter: NL = 47 mm)
channel sensors using a flange (included in the scope of delivery), on-wall sensors using screws
III (according to EN 60 730)
IP 65 (according to EN 60 529) enclosure only! (PLEUROFORM IP 30)
CE-conformity, electromagnetic compatibility according to EN 61 326, EMC directive 2014 ⁄ 30 ⁄ EU
three-line display with illumination, cutout approx. 70 x 40 mm (W x H),
to display the actual humidity, actual temperature, air quality and / or the actual CO
- Modbus
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concentration and air quality (VOC), thus enabling effective monitoring
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/ KFTM - LQ - CO - Modbus (Patent No. DE 10 2014 010 719.1):
2 2
- Modbus:
2
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content of the air is measured using an optical NDIR
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®
CO . The above explanations demonstrate that
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), atmospheric pressure
2
= 30 m/s (air), Ø 20 mm,
max
content
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Rev. 2018 - V22 GB
molecules.
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