Technical Data - S+S Regeltechnik HYGRASGARD ESFF Series Operating Instructions, Mounting & Installation

G
®
HYGRASGARD
Series HYGRASGARD ® ESFTF humidity sensors are used for measuring the relative humidity and temperature of air in pressure systems and con-
vert these measured values into standard signals of 0 - 10 V or 4...20 mA. Process connection by G 1 ⁄ 2" straight external pipe thread, with terminal
box enclosure made of impact-resistant plastic and enclosure cover with quick-locking screws. These screw-in humidity sensors are to be operated
in pollutant- free non-precipitating air, mounted vertical with the sensor pointing down.

TECHNICAL DATA:

Power supply: .................................. 24 V AC ⁄ DC for U variant
Sensors: ........................................... digital humidity sensor with integrated temperature sensor,
Sensor protection: ......................... metal sinter filter, exchangeable
HUMIDITY:
Measuring range, humidity: ......... 0 ... 100 % r. H.
Operating range, humidity: ........... 10 ... 95 % r. H.
Deviation, humidity: ....................... ± 3 % r. H. (40...60 %) at + 20 °C, otherwise ± 5 % r. H.
Output, humidity: ............................ 0 -10 V at U variant
TEMPERATURE:
Measuring range, temperature: . 0 ....+ 50 °C
Operating range, temperature: ... 0 ....+ 50 °C
Deviation, temperature: ................ ± 0.5 K at + 20 °C
Output, temperature: .................... 4 ... 20 mA
Ambient temperature: .................. storage - 25 ...+ 60 °C, operation -5 ...+ 55 °C
Electrical connection: .................... 2- or 3-wire connection (see connecting diagram),
Enclosure: ........................................ plastic, material polyamide,
Dimensions: ..................................... 72 x 64 x 39.4 mm
Cable gland: ..................................... M16, including strain relief
Protective tube: ............................. metal, brass, nickel-plated, Ø 20 mm
Process connection: ...................... screwed socked with G 1 ⁄ 2" straight external
Nominal pressure: ......................... p
Overload:: ......................................... max. 5 times nominal pressure
Bursting pressure: ......................... p
Protection class: ............................ III (according to EN 60 730)
Protection type: ............................. IP 65 (according to EN 60 529)
Standards: ....................................... CE conformity,
Type ⁄ WG1
ESFF - I
ESFF - U
ESFTF - I
ESFTF - U
ESFF ⁄ ESFTF
15 ... 36V DC for I variant, R
dew-proof, small hysteresis, high long-term stability ± 1 % per year
4...20 mA at I variant (transmitter R
0.14 - 1.5 mm², via terminal screws
on circuit board
30 % glass-globe-reinforced,
with quick-locking screws,
colour pure white (similar RAL 9010)
pipe thread
< 20 bar
nenn
= 150 bar
max
electromagnetic compatibility
according to EN 61 326 + A1 + A2,
EMC directive 2004 ⁄ 108 ⁄ EC
Measuring Range
Humidity (relative)
0 ...100 % r. H.
0 ...100 % r. H.
0 ...100 % r. H.
0 ...100 % r. H.
depending on working resistance
L
< 500 Ω)
L
Connecting diagram
Connecting diagram
Connecting diagram
Connecting diagram
Temperature
–
–
0 ...+ 50 °C
0 ...+ 50 °C
1 Supply voltage 15-36V DC
2 4-20mA for 0-100% r.H. R
1 Supply voltage 15-36V DC
2 4-20mA for 0-100% r.H. R
3 4-20mA for 0-50C° R
1 UB- GND
2 UB+ supply voltage 24V AC/DC
4
Output humidity in r.H. 0-10V
1 UB- GND
UB+ supply voltage 24V AC/DC
2
4 Output humidity in r.H. 0-10V
6
Output temperature in °C 0-10V
Output
Humidity (relative) Temperature
4 ... 20 mA –
0 -10 V –
4 ... 20 mA 4 ... 20 mA
0 -10 V 0 -10 V
ESFF - I
< 500 Ohm
L
ESFTF - I
< 500 Ohm
L
< 500 Ohm
L
ESFF - U
ESFTF - U