S+S Regeltechnik HYGRASREG AFTF-35 Notice D'instruction page 8

G HYGRASREG ® AFTF-35
Condensation-protected on-wall sensor HYGRASREG
with quick-locking screws, cable gland, plastic sinter filter (replaceable), optionally with ⁄ without display, for detecting relative humidity
(0...100 % RH) and temperature (4 switchable measuring ranges, max. 0...+100 °C) as well as for determining various parameters of humidity
measurement technology. The measuring transducer converts the measured variables into a standard signal of 0 - 10 V or 4...20 mA.
The unit is specially designed for use in the high humidity range (95...99 % RH). A long-term stable, digital humidity and temperature sensor is
used. Overtemperature prevents or hinders dew formation on the humidity sensor. A second, separate temperature measuring element is used to
determine the actual relative humidity of the ambient air. The following measured variables are calculated internally from these parameters and
are retrievable via output OUT3: absolute humidity, mixing ratio, dew point and wet bulb temperature (can be changed via DIP switch).
The sensor is used in medical technology, refrigeration technology, control technology, air conditioning and clean room technology.
The sensor is factory-calibrated; an environmental precision adjustment by an expert is possible.
TECHNICAL DATA
Power supply:
Working resistance:
Power consumption:
Measured variables:
Parameters:
Outputs:
Sensor:
Sensor protection:
HUMIDIT Y
Measuring range, humidity:
Deviation in humidity:
Output humidity:
TEMPERATURE
Temperature measuring range:
Deviation in temperature:
Temperature output:
Long-term stability:
Response time (t90):
Warm-up time:
Electrical connection:
Cable connection:
Housing:
Housing dimensions:
Protective tube:
Process connection:
Ambient temperature:
Permitted humidity:
Protection class:
IP rating:
Standards:
®
AFTF-35 with active and switching output, housing made of impact-resistant plastic
24 V AC/DC (± 10 %)
> 100 kOhm for U variant; 100...500 Ohm for I variant
typically < 6 W at 24 V DC, peak current 200 mA
relative humidity [% RH], temperature [°C]
3
absolute humidity [g/m ], mixture ratio [g/kg], dew point [°C], wet bulb temperature [°C]
3 active outputs (0 - 10 V or 4...20 mA)
1 changeover contact
digital humidity sensor with integrated temperature sensor,
low hysteresis, high long-term stability,
with condensation protection through heating function
(plus a second, separate temperature measuring element)
plastic sinter filter, Ø 16 mm, L = 35 mm, exchangeable
(optional metal sinter filter, Ø 16 mm, L = 32 mm)
0...100 % RH
typically ± 3.0 % (30...70 % RH) at +25 °C, otherwise ± 3.5 %
(deviations of alternative parameters result
from deviations from humidity and temperature.)
0 - 10 V for U variant; 4...20 mA for I variant
Multi-range switching with 4 switchable measuring ranges (see table)
0...+50 °C (default); –20...+50 °C; –20...+80 °C; 0...+100 °C
typically ± 0.5 K at +25 °C
0 - 10 V for U variant; 4...20 mA for I variant
± 1 % per year
< 60 s
< 10 min
0.14 - 1.5 mm², via terminal screws
Cable gland, plastic (M 16 x 1.5; with strain relief,
exchangeable, max. inner diameter 10.4 mm)
Plastic, UV-resistant, 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)
made of stainless steel V2A (1.4301), Ø 16 mm, NL = 55 mm
(combined humidity and temperature measuring element) and
of stainless steel V4A (1.4571), Ø 6 mm, NL = 65 mm
(via a second, separate temperature measuring element)
via screws
storage –20...+50 °C; operation –20...+50 °C
< 99 % RH, non-precipitating air free of harmful substances
III (as per EN 60 730)
IP 65 (as per EN 60 529) housing, IP 20 sensor technology
CE-conformity, electromagnetic compatibility according to EN 61 326,
EMC Directive 2014 ⁄ 30 ⁄ EU
8
Rev. Data - V20
continued on next page!