Technical Data - S+S Regeltechnik HYGRASGARD KAVTF Mode D'emploi

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HYGRASGARD ® KAVTF ⁄ AAVTF
The universal humidity sensors HYGRASGARD
humidity measurement. The relative humidity and temperature of the ambient air are measured. From these measurands, the different characteristic
variables are internally calculated.
For device version x-U, two outputs of 0 - 10 V are available, for Version x- I two outputs of 4...20 mA. Here, the output variables for these outputs
can be defined using DIP switches. Selectable for output 1 are relative humidity [% r. H.], absolute humidity [g ⁄ m³], mixture ratio [g ⁄ kg], dew point
temperature [°C], or enthalpy [kJ ⁄ kg] (while neglecting the atmospheric air pressure). At output 2, four different measuring ranges for ambient
temperature [°C] are selectable. Ex-factory condition (default) for output 1 is relative humidity 0...100 % r. H., for output 2 temperature measuring
range 0...+50 °C. Due to the different configuration alternatives provided, numerous measurement and control tasks can be solved by just one de-
vice. These devices are to be operated in pollutant-free non-precipitating air, with neither above-atmospheric nor below-atmospheric pressure at the
sensors. Application examples include medical technology, refrigeration, air conditioning, and clean room technology. These sensors are appropriate
for duct or wall mounting installation.

TECHNICAL DATA:

Power supply: ........................ for U variant: 24 V AC (± 20 %); 15...36 V DC (± 10 %)
Power consumption: ................ < 1 W at 24 V DC; < 2 VA at 24 V AC
Sensors: ............................... digital humidity sensor with integrated temperature sensor,
Sensor protection: .................. plastic sinter filter, Ø 16 mm, L = 35 mm, exchangeable
HUMIDITY:
Measuring range, humidity: ....... multi-range switching with 8 switchable measuring ranges (see table)
Operating range, humidity: ....... 10...95 % r. H., without formation of dew
Deviation, humidity: ................. ± 3 % r. H. (40...60 %); at +20 °C, otherwise ± 5 % r.H.
Output 1, humidity: ................. 0 - 10 V at U variant (see table)
TEMPERATURE:
Measuring range,
temperature: ......................... multi-range switching with 4 switchable measuring ranges (see table)
Operating range,
temperature: ......................... –35...+85 °C sensors
Deviation, temperature: ........... ± 0.5 K (0...+50 °C); at +20 °C, otherwise ± 1 K
Output 2, temperature: ........... 0 - 10 V at U variant (see table)
Ambient temperature: ............. storage –35...+85 °C;
Electrical connection: .............. 4-wire connection at U variant
Enclosure: ............................. plastic, polyamide, 30 % glass-globe-reinforced,
Enclosure dimensions: ............. 72 x 64 x 37.8 mm (Tyr 1 without display)
Cable gland: ........................... M 16 x 1.5, including strain relief, exchangeable, max. inner diameter 10.4 mm
Protective tube: ...................... KAVTF: PLEUROFORM
Process connection: ................. KAVTF: by mounting flange, plastic (included in the scope of delivery)
Protection class: .................... III (according to EN 60 730)
Protection type: ..................... IP 65 (according to EN 60 529) enclosure only!
Standards: ............................ CE conformity, electromagnetic compatibility according to
Optional: ............................... two-line display with illumination, cutout approx. 36 x15 mm (W x H),
® KAVTF ⁄ AAVTF with 6 output sizes are used to determine diverse characteristic variables in
for I variant: 15...36 V DC (± 10 %) depending on working resistance, stabilised, max. ripple 0.5 Vss
low hysteresis, high long-term stability ± 1 % per year
(optional metal sinter filter, Ø 16 mm, L = 27 mm)
0...100 % r. H. (standard)
Deviations of other outputs result from
deviations of humidity and temperature.
4...20 mA at I variant (see table)
0...+50 °C (standard); –20...+80 °C; –35...+75 °C; –35...+35 °C
4...20 mA at I variant (see table)
operation –30...+70 °C, non-precipitating
3-wire connection at I variant (Transmitter)
0.14 - 1.5 mm², via terminal screws on circuit board
with quick-locking screws (slotted ⁄ Phillips head combination),
colour traffic white (similar to RAL 9016),
enclosure cover for display is transparent!
72 x 64 x 43.3 mm (Tyr 1 with display)
TM , material polyamide (PA6), Ø 20 mm, NL = 235 mm, with torsion protection
(on request, optional stainless steel, Ø 16 mm)
AAVTF: stainless steel, Ø 16 mm, nominal length NL = 55 mm
AAVTF: by screws
EN 61 326, EMC directive 2004 ⁄ 108 ⁄ EC
for displaying actual temperature and actual humidity,
as well as the selectable output variables
Rev. 2015 - 2.1 GB