S+S Regeltechnik HYGRASGARD KFTF - Modbus - T3 Notice D'instruction page 7

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HYGRASGARD
Calibratable duct humidity and temperature sensor HYGRASGARD
connection, in an impact-resistant plastic housing with quick-locking screws, optionally with ⁄ without display, with a plastic sinter filter (exchangeable),
incl. mounting flange, 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. International system of units SI (default) can be switched to Imperial (via Modbus). The duct 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 isolated RS485 Modbus interface, switchable bus terminating resistor, DIP switch for setting in
deenergised state, internal LEDs for telegram status indication, Push terminals and large three-line display (illuminated, individually programmable).
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:
Bus interface:
Bus protocol:
Baud rate:
Signal filtering:
Housing:
Housing dimensions:
Cable connection:
Protective tube:
Process connection:
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
®
KFTF (20) - Modbus-T3
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)
KFTF - Modbus-T3: typically ± 2.0 % (20...80 % RH) at +25 °C / +77 °F, otherwise ± 3.0 %
KFTF 20 - Modbus-T3: typically ± 1.8 % (10...90 % RH) at +25 °C / +77 °F, otherwise ± 2.0 %
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
RS 485, galvanically isolated, Bus termination activatable via DIP switches.
Up to 32 devices possible in one segment.
In case of a greater number of devices, RS485 transceivers must be used.
Modbus (RTU mode), address range 0...247 adjustable
9600, 19200, 38400 Baud
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 (2x 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)
TM
PLEUROFORM , material polyamide (PA6), with torsion protection,
Ø 20 mm / 0.79 in, NL = 235 mm / 9.25 in (optionally 100 mm / 3.9 in), v
(optionally made of stainless steel V2A (1.4301), Ø 16 mm / 0.63 in)
by mounting flange, plastic (included in the scope of delivery)
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 EMC Directive 2014 ⁄ 30 ⁄ 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]
® KFTF - Modbus - T3 (± 2.0%) or KFTF - 20 - Modbus - T3 (± 1.8%), with Modbus
Measuring ranges
7
Rev. Data - V41
3 3
] [gr/ft ],
= 30 m/s - 98.4 ft/s (air)
max
SI (default) →
–35...+80 °C → –31...+176 °F
0...100 % RH → 0...100 % RH
Imperial