QFS-20 & QFS-21 float switches have stainless steel floats and one or two reed contacts.
Properties
Protection class EN60529
:
IP68
Material Float
:
VA 1.4571
Material hose
:
Edelstahlwellschlauch (1.4404) mit Edelstahldrahtumflechtung (1.4301)
Operating temperature
:
max. + 150 °C
media density
:
ρ ≥ 0,8g/cm³
Switching system
:
Reed-Schalter
Contact
:
Wechsler, NO, NC
Switching voltage
:
4...250 V AC/DC
Switching current
:
1 mA ...1 A
Switching capacity
:
max. 1A, 60 VA/60 W
Switching hysteresis
:
ca. 100 mm
Switching angle
:
ca. + 20° / – 20°
Operating pressure (QFS-20)
:
max. 15 bar
Operating pressure (QFS-21)
:
max. 6 bar
TRM-100
Turbidimeter (0...1.000 FNU or 500...4.000 FAU)
The turbidimeter TRM-100 is a compact device for measuring turbidity in liquids. The "turbidity" is measured using the scattered light method (angle 90 degrees) for the turbidity range of < 1,000 FNU (Formazine Nephelometric Units) and the transmitted light method (angle 0 degrees) for the turbidity ranges > 1,000 FAU (Formazine Attenuation Units).
Properties
Operating pressure
:
max. 10 bar @ 20 °C | max. 2,5 bar @ 60 °C
Measuring range
:
500...4.000 FNU / FAU
Measuring accuracy
:
+/-5 %
Mounting position
:
horizontal
Process connection
:
DN 20 | DN 40
Flange connection
:
>= DN 20
number of senders
:
2
number of receivers
:
1
Material
Seal
:
EPDM | optional FPM (Viton)
Process connection
:
PVC | PPH
Measuring tube
:
Borsilikatglas mit Nano Beschichtung
Input
Power supply
:
18...30 V DC
Power consumption
:
< 2 W
Output
Output contact
:
4...20 mA
Switching delay (adjustable)
:
1...10 s
Protection class
:
IP 65
Switching voltage
:
max. 250 V AC | max. 115 V DC
Switching current
:
max. 3 A
Switching capacity
:
max. 500 VA, 60 Watt
Potential-free changeover contact
:
1 @ 1...10 s
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