- % SALE %
- Temperature
- Humidity
- Pressure
- Light Intensity & Motion
- Air Quality & Flow
- Modbus | Wireless Modbus
- PowerIO®
- EtherCAT P
- Accessory
Description
Dew point control switches
HYGRASGARD® TW - Modbus - T3
Patented quality product
(pro-dynamic cross convection patent no. DE 10 2012 015 726.6)
Calibratable dew point control switch HYGRASGARD® TW - Modbus - T3 (compact variant incl. strap) or TW - Modbus - external (detached variant), with Modbus connection, 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) 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 measurement). International system of units SI (default) can be switched to Imperial (via Modbus).
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.
(pro-dynamic cross convection patent no. DE 10 2012 015 726.6)
Calibratable dew point control switch HYGRASGARD® TW - Modbus - T3 (compact variant incl. strap) or TW - Modbus - external (detached variant), with Modbus connection, 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) 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 measurement). International system of units SI (default) can be switched to Imperial (via Modbus).
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 Modbus sensor with galvanically separated RS485-Modbus-interface, selectable
bus termination resistance, DIP switch for setting the bus parameters and bus address in
curent-free state, internal LEDs for telegram status display, two separate push-in terminals
and large three-line display (illuminated; with customised programming in the 7-segment and
dot-matrix range). The sensor is factory-calibrated; an environmental precision adjustment by
an expert is possible.
Technical details
Voltage supply
24 V AC (± 20 %) and
15…36 V DC
15…36 V DC
Power consumption
< 1.2 W/ 24 V DC; < 1.8 VA/ 24 V AC
Deviation of humidity
typical ± 2.0 % (20…80 % RH); at + 25 °C, otherwise ± 3.0 %
Data points
Temperature [°C], relative humidity [% RH],
dew point [°C], absolute humidity [g / m3],
mixture ratio [g / kg], enthalpy [kJ / kg]
dew point [°C], absolute humidity [g / m3],
mixture ratio [g / kg], enthalpy [kJ / kg]
Temperature deviation
typically ± 0.2 K at +25 °C
Sensor protection
membrane filter
Measuring range
0...100 % RH (humidity)
-35...+80 °C (temperature)
-35...+80 °C (temperature)
Measuring ranges
–35...+80 °C
0...100 % RH
0...100 % RH
Zero point offset
± 10 % RH (humidity)
± 5 °C (temperature)
± 5 °C (temperature)
Ambient temperature
–30...+70 °C
Medium
clean air and
non-aggressive, non-combustible gases
non-aggressive, non-combustible gases
Bus protocol
Modbus (RTU mode),
address range 0...247 selectable
address range 0...247 selectable
Signal filtering
4 s / 32 s
Electrical connection
0.2 - 1.5 mm², via push-in terminal
Communication
Modbus RTU (RS485 interface for RTU cable)
Sensor
digital humidity sensor
with integrated temperature sensor,
low hysteresis, high long-term stability
with integrated temperature sensor,
low hysteresis, high long-term stability
Permissible air humidity
< 95 % RH, non-precipitating air
Protection class
III (according to EN 60 730)
Protection type
IP 65 (according to EN 60 529)*
Protection type housing
IP 65
Process connection
endless metal strap with metal tightener,
300 mm, for pipes up to 3 ''
(included in scope of delivery)
300 mm, for pipes up to 3 ''
(included in scope of delivery)
Housing
plastic, UV-stabilised,
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016)
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016)
Housing dimensions
108 x 78.5 x 43.3 mm (Tyr 3 without display)
Cable gland
2x M 20 x 1.5; with strain relief, replaceable,
inner diameter 8 - 13mm
inner diameter 8 - 13mm
Installation
TW - Modbus with strap for direct mounting on pipes
or for direct mounting on flat surfaces
(e.g. walls, ceilings)
or for direct mounting on flat surfaces
(e.g. walls, ceilings)
Standards
CE conformity,
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU