S+S REGELTECHNIK HYGRASGARD ESFTF Bedienungs- Und Montageanleitung Seite 8

G
®
HYGRASGARD
Calibratable screw-in sensor HYGRASGARD
with cable gland (optional M12 connector as per DIN EN 61076-2-101), duct tube with thread (G1/2") and metal sinter filter (replaceable).
The sensor is used for detecting the relative humidity (0...100 % RH) and the temperature (4 switchable measuring ranges)
in compressed air lines up to max. 10 bar. The measuring transducer converts the measured values into a standard signal
of 4...20 mA or 0 - 10 V. Further parameters are calculated internally from the measured values, that are retrievable via the humidity output:
absolute humidity, mixing ratio and dew point temperature (can be changed via DIP switch).
Furthermore, the unit boasts a sensor protection function for high humidity (95...99 % RH).
The measuring element is heated automatically in the critical range and thus protected against condensation.
The sensor is factory-calibrated; an environmental precision adjustment by an expert is possible.
It must be installed vertically with the humidity sensor pointing downwards.
TECHNICAL DATA
Power supply:
Working resistance:
Power consumption:
Data points:
HUMIDIT Y
Sensor:
Sensor protection:
Measuring range, humidity:
Deviation in humidity:
Long-term stability:
Output humidity:
TEMPERATURE
Temperature measuring range:
Deviation in temperature:
Temperature output:
Response time (t90):
Warm-up time:
Electrical connection:
Housing:
Housing dimensions:
Cable connection:
Protective tube:
Process connection:
ESFTF
®
ESFTF in a housing made of an impact-resistant plastic with quick-locking screws,
24 V AC/DC (± 10 %) for U variant;
15...36 V DC for I variant, depending on working resistance
RL = (UB – 15 V) / 0.02 A for I variant, see working resistance diagram
max
< 1.1 VA for U variant;
< 1.5 W for I variant
relative humidity [% RH], absolute humidity [g/m
mixing ratio [g/kg], dew point [°C], temperature [°C]
Digital humidity sensor with integrated temperature sensor,
low hysteresis, high long-term stability
Metal sinter filter, Ø 20 mm, replaceable,
with condensation protection through heating function
0...100 % RH (default)
Typically ± 3.0 % (30...70 % RH) at +25 °C, otherwise ± 3.5 %
(deviations of alternative parameters result
from deviations from humidity and temperature.)
± 1 % per year
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...+80 °C; –30...+70 °C; 0...+100 °C
typically ± 0.5 K at +25 °C
0 - 10 V for U variant; 4...20 mA for I variant
< 60 s
< 5 min
4-wire for U variant; 3-wire for I variant;
0.14 - 1.5 mm², via terminal screws
Plastic, UV-resistant, polyamide material, 30 % glass-globe reinforced,
with quick-locking screws (slotted ⁄ Phillips head combination),
colour traffic white (similar to RAL 9016)
72 x 64 x 37.8 mm (Tyr 1)
Cable gland made of plastic (M16 x 1.5; with strain relief,
replaceable, max. inner diameter 10.4 mm) or
M12 connector as per DIN EN 61076-2-101 (on request)
made out of metal, Ø 20 mm, NL = 115 mm, compressive strength p
Thread G1/2", immersion depth 25 mm
3
],
8
Rev. Data - V20
= 10 bar
max
continued on next page!