Built-in sensor with sturdy ALMEMO® circular connector. Sensor tube made of stainless steel
FHA646KxC Capacitive
humidity sensor Type
● Built-in
sensor with sturdy ALMEMO® circular connector
● Sensor tube
made of stainless steel
● Active compensation
of humidity measurement by means of the integrated temperature sensor (new
measuring range for all ALMEMO® devices with effect from 2003)
● Wide range
of operating temperatures
● Intelligent
ALMEMO® connecting cables, up to 100 meters
Technical data
:
Operative range :
-20 to +80 °C/ 5 to 98 % r.H.
Humidity measuring circuit :
Measuring range :
0 to 100 % r.H.
Sensor :
capacitive
Accuracy :
± 2 % r.H. at nominal temperature
Reproducibility :
<1 % r.H. at nominal temperature
Nominal temperature :
+25 ± 3 °C
Sensor operating pressure :
atmospheric pressure
Response time T90 :
approx. 10 seconds
(without filter) at 5 m/s
Temperature measuring circuit
Sensor:
NTC type N
Accuracy :
-20 to 0°C: ±0,4°C
0 to 70°C: ±0,1°C
70 to 80°C: ±0,6°C
Reproducibility :
0,1°C
Mechanical design
Sensor tube :
stainless steel, diameter 12 mm
Protective cap :
SK7, metal-mesh filter
Connection :
8-pin
ALMEMO® circular connector
Types :
Humidity sensor with stainless steel tube, active
temperature compensation,
-20 to +80 °C, and ALMEMO® circular connector
FHA646K1C
Sensor length = 120 mm
FHA646K2C
Sensor length = 260 mm
FHA646K3C
Sensor length = 520 mm
Intelligent ALMEMO® connecting cable
with 8-pin ALMEMO® circular coupling
ZA9060VKCR5
Length = 5 meters
ZA9060VKCR10
Length = 10 meters
ZA9060VKCR20
Length = 20 meters
ZA9060VKCR30
Length = 30 meters
ZA9060VKCR50
Length = 50 meters
ZA9060VKCR100
Length = 100 meters
Accessories :
ZB9600W
Brackets for wall mounting, distance
from wall approx. 40 mm
ZB9600KV
Movable aluminum screw connection with Teflon sealing
ring
ZB9600F
Connecting flange for screw connection, hole circle
38 mm Ø
FHA646-1x/-KxC/-2x/-7/-5x/-WG Protective caps for capacitive humidity
sensors Type
Dimensions : length approx. 33 mm, diameter 12 mm
Types :
Type
Designation
Pore-
size
Maximum
temperature
Typical Application
SK7
ZB9600SK7
Metal-mesh filter in
PC-housing
100 μm
120°C
Universal, for medium,
contamination, also high humidity
SK6
ZB9600SK6
PTFE-Sinterfilter
50 μm
180°C
High chemical resistance
SK8
ZB9600SK8
Stainless steel
sinter filter
10 μm
180°C
For severe mechanical stress,
heavy contamination,
strong air flow
Brackets for wall mounting
Movable
screw connection
ZB9600W
Brackets for wall
mounting, distance from
wall approx. 40 mm
ZB9600KV
Movable aluminum screw connection
with Teflon sealing ring
ZB9600F
Connecting flange for screw connection,
hole circle 38 mm Ø
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