S+S Regeltechnik HYGRASGARD TW-wModbus Notice D'instruction page 7

G U
HYGRASGARD
Patented quality product (pro-dynamic cross convection patent no. DE 10 2012 015 726.6)
Calibratable dew point control switch HYGRASGARD
W-Modbus (Wireless), in an impact-resistant plastic housing with quick-locking screws, optionally with ⁄ without display, to exactly detect the relative
humidity (0...100% RH) and the temperature (– 35...+80 °C / – 31...+176 °F) and to detect various parameters in humidity measurement. The dew
formation in particular is reliably determined thanks to its patented measuring method, the pro-dynamic cross-convection (no conductivity measure-
ment). International system of units SI (default) can be switched to Imperial (via Modbus). The W-Modbus (Wireless) replaces the RTU cable, the BMS
connection is wireless and is established via a W-Modbus gateway. The surface-contact sensor is applied in a non-aggressive, dust-free environment
and is suitable for installation in ceilings, ducts and devices. It is used in the refrigeration, air conditioning and clean room technology, engineering
rooms, hotels and conference facilities.
A long-term stable, digital humidity and temperature sensor guarantee exact measurement results. These measurands are used to internally
calculate the following parameters that can be retrieved via Modbus: relative humidity, absolute humidity, mixture ratio, dew point, enthalpy (ignoring
atmospheric air pressure) and ambient temperature.
Innovative W-Modbus sensor with DIP switch for setting the bus address in current-free state, internal LEDs for displaying the connection quality and
telegram status, push-in terminal and large three-line display (illuminated, individually programmable in the 7-segment range and dot-matrix range).
The sensor is factory-calibrated; an environmental precision adjustment by an expert is possible.
TECHNICAL DATA
Voltage supply:
Power consumption:
System of units:
Data points:
Sensor:
Sensor protection:
Measuring range:
Deviation, humidity:
Temperature deviation:
Zero point offset:
Ambient temperature:
Medium:
Communication:
Range:
Bus protocol:
Signal filtering:
Housing:
Housing dimensions:
Cable connection:
Process connection:
Sensor protection:
Mounting:
Electrical connection:
Permissible air humidity:
Protection class:
Protection type:
Standards:
Features:
Switchable system of units
Measurements / Data points
Temperature
Relative humidity
Dew point
Absolute humidity
Mixing ratio
Enthalpy
®
TW - wModbus
®
TW - wModbus (compact variant incl. strap) or TW- extern - wModbus (detached variant), with
24 V AC (± 20 %); 15...36 V DC
< 1.2 W ⁄ 24 V DC; < 1.8 VA ⁄ 24 V AC
SI (default) or Imperial (switchable via Modbus)
temperature [°C] [°F], relative humidity [% RH], dew point [°C] [°F], absolute humidity [g/m
mixing ratio [g/kg] [gr/lb], enthalpy [kJ/kg] [Btu/lb]
digital humidity sensor with integrated temperature sensor, low hysteresis, high long-term stability
plastic sinter filter, Ø 16 mm / 0.63 in, L = 35 mm / 1.38 in, exchangeable
(optional metal sinter filter, Ø 16 mm / 0.63 in, L = 32 mm / 1.26 in)
0...100 % RH (humidity); – 35...+80 °C / – 31...+176 °F (temperature)
typically ± 2.0 % (20...80 % RH) at +25 °C / +77 °F, otherwise ± 3.0 %
typically ± 0.2 K at +25 °C / ± 0.4 °F at +77 °F
± 10 % RH (humidity); ± 5 °C ⁄ ± 9 °F (temperature)
–30...+70 °C / –22...+158 °F
clean air and non-aggressive, non-combustible gases
W-Modbus (Wireless Modbus, frequency 2.4 GHz ISM, transmission power 100 mW, AES-128 encrypted)
max. 500 m ⁄ 1640 ft (open field), approx. 50 - 70 m / 164 - 230 ft (inside buildings) between two wireless nodes
Modbus (RTU mode), address range 0...247 selectable
4 s / 32 s
plastic, UV-resistant, material polyamide, 30 % glass-globe reinforced,
with quick-locking screws (slotted ⁄ Phillips head combination),
colour traffic white (similar to RAL 9016), housing cover for display is transparent!
108 x 78.5 x 43.3 mm / 4.25 x 3.09 x 1.70 in (Tyr 3 without display)
108 x 78.5 x 45.8 mm / 4.25 x 3.09 x 1.80 in (Tyr 3 with display)
cable gland, plastic (M 20 x 1,5; with strain relief, exchangeable, inner diameter 8 - 13 mm / 0.3 - 0.5 in)
or M12 connector according to DIN EN 61076-2-101 (optional on request)
endless strap with metal tightener, 300 mm / 11.8 in, for pipes up to 3"
membrane filter
TW - wModbus with strap for direct mounting on pipes
or for direct mounting on flat surfaces (e.g. walls, ceilings)
TW - extern - wModbus with detached sensor head (cable length KL = 1.5 m / 4.9 in) for mounting on pipes
0.2 - 1.5 mm² / 24 - 16 AWG, using push-in terminals
< 95 % RH, non-precipitating air
III (according to EN 60 730)
IP 65 (according to EN 60 529)
CE conformity according to Radio Directive 2014 ⁄ 53 ⁄ EU
Display with illumination, three-line, programmable, cutout approx. 51 x 29 mm / 2.0 x 1.1 in (W x H),
for displaying the actual humidity and actual temperature (cyclic) or a selectable parameter (static)
or an individually programmable display value
SI (default) → Imperial
[°C] → [°F]
[% RH] → [% RH]
[°C] → [°F]
[g/m³] → [gr/ft³]
[g/kg] → [gr/lb]
[kJ / kg] → [Btu/lb]
Measuring ranges
7
Rev. Data - V11
3 3
] [gr/ft ],
SI (default) →
–35...+80 °C → –31...+176 °F
0...100 % RH → 0...100 % RH
Imperial