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- Temperature
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- Pressure
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- Air Quality
- Flow
- Rymaskon
- Modbus | Wireless Modbus
- EtherCAT P
- Accessory
Description
Screw-in humidity and temperature sensor for pressure systems
HYGRASGARD® ESFTF
The humidity transmitters of the HYGRASGARD® ESFF / ESFTF series are used for measuring relative humidity and air temperature pressurised systems, and convert these measured values to standard signals of 4...20 mA or 0-10 V. Process connection is G ½" straight external pipe thread, with a terminal box housing made of impact resistant plastic, and housing cover with quick-locking screws.
The screw-in humidity measuring transducers have been designed for operation in pollutant-free, non-precipitating air. They are mounted vertically with the sensor pointing down.
Technical details
Voltage supply
24 V AC/DC (± 10 %) for U -variant;
15...36 V DC for I -variant, load-dependent
15...36 V DC for I -variant, load-dependent
Power consumption
1.1 VA for U variant;1.5 W for I variant
Working resistance
RLmax = (UB - 15 V) / 0.02 A for I -variant, see load diagram
Data points
Temperature [°C], relative humidity [% RH],
dew point [°C], absolute humidity [g / m3],
mixture ratio [g / kg]
dew point [°C], absolute humidity [g / m3],
mixture ratio [g / kg]
Measuring range, humidity
0...100 % RH
Temperature deviation
typically ± 0.5 K at +25 °C
Deviation of humidity
typically ± 3.0 % (30...70 % RH) at +25 °C, otherwise ± 3.5 %
(deviation of the alternative parameters result
from the deviations of humidity and temperature).
(deviation of the alternative parameters result
from the deviations of humidity and temperature).
Measuring range, temperature
multi-range switching with 4 switchable measuring ranges
0...+50 °C (default); –20...+80 °C; –30...+70 °C; 0...+100 °C
0...+50 °C (default); –20...+80 °C; –30...+70 °C; 0...+100 °C
Nominalpressure
10 bar
Warm up time
< 5 min
Response time
< 60 s
Output
0 - 10 V for U variant; 4...20 mA for I variant
Sensor protection
Metal sintered filter, Ø 20 mm, replaceable, with condensation protection due to heating function
Measuring ranges
0...100 % RH
0...+50 / –20...+80 / –30...+70 / 0...+100 °C
0...+50 / –20...+80 / –30...+70 / 0...+100 °C
Ambient temperature
storage –20...+ 50 °C
operation 0...+ 50 °C
operation 0...+ 50 °C
Process connection
screwed socket with G ½ " straight pipe thread, immersion depth 25 mm
Protective tube
made of metal, Ø 20 mm, NL = 115 mm, pressure resistance pmax = 10 bar
Sensor
digital humidity sensor
with integrated temperature sensor,
low hysteresis, high long-term stability
with integrated temperature sensor,
low hysteresis, high long-term stability
Electrical connection
3- or 4-wire connection
0.14 - 1.5 mm² via plug terminals
0.14 - 1.5 mm² via plug terminals
Dimensions
72 x 64 x 37,8 mm (Tyr 1)
Installation
vertical mounting, humidity sensor at the bottom
Housing
plastic, UV-stabilised,
material polyamide, 30 % glass-globe-reinforced
colour traffic white (similar to RAL 9016)
ALTF 02 with snap-on lid,
material polyamide, 30 % glass-globe-reinforced
colour traffic white (similar to RAL 9016)
ALTF 02 with snap-on lid,
Long-term stability
± 1 % per year
Humidity
< 99% RH, pollutant-free, non-precipitating air
Protection class
III (according to EN 60 730)
Protection type housing
IP 65
Standards
CE conformity
according to EMC Directive 2014/ 30/ EU,
according to EN 61 326
according to EMC Directive 2014/ 30/ EU,
according to EN 61 326
Protection type
IP 65 (according to EN 60 529) in the built-in state,
Housing tested, TÜV SÜD, Report No. 713139052 (Tyr 1)
Housing tested, TÜV SÜD, Report No. 713139052 (Tyr 1)
Function
Sensorschutzfunktion bei Hochfeuchte (95...99 % RH)
Übersteigt die relative Feuchte den werksseitig vorgegebenen Schwellwert von 95 % RH, wird eine zeitlich begrenzte Heizfunktion aktiviert und der Sensor vor Kondensation geschützt. In this operating state, the output signals remain at the last measured values before the heating function was activated.
Übersteigt die relative Feuchte den werksseitig vorgegebenen Schwellwert von 95 % RH, wird eine zeitlich begrenzte Heizfunktion aktiviert und der Sensor vor Kondensation geschützt. In this operating state, the output signals remain at the last measured values before the heating function was activated.