Overfill protection for containers with Ex approval
Level sensors type T-20_.F... are
approved by the DIBt (German
Institute for Structural Engineering) as liquid level limit switches for the overcharge protection of containers for storing water-dangerous liquids.
Connection
Box
:
Ex-Polyester
Box
:
Ex-Aluminium
Properties
Protection class EN60529
:
IP 65
connection thread
:
G2"
Union nut
:
G 2¾"
Guide tube length
:
max. 6 m
Operating temperature
:
-20…+60 °C
Operating pressure
:
max. 6 bar je nach Ausführung
media density
:
ρ ≥ 0,72 g/cm³ (je nach Schwimmertyp)
Switching hysteresis
:
2 mm
Switching point tolerance
:
max. 2 mm
Resistance value
Operational readiness
:
ca. 1 kΩ
overfill alarm
:
ca. 12 kΩ
Switching time
:
ca. 20 ms
Ex-protection
:
siehe Baumusterprüfbescheinigung
CE marking
:
siehe Konformitätserklärung
PPS-390
PPH float with magnet insert
for actuating monostable and bistable contacts
Variants
32
:
AußenØ 26 x 180 mm, für RohraußenØ 32 u. 34 mm Gewicht ca. 38 g
37
:
AußenØ 29,5 x 170 mm, für RohraußenØ 40 mm (PN 16) Gewicht ca. 62 g
40
:
AußenØ 40 x 165 mm, für RohraußenØ 50 mm Gewicht ca. 145 g
50
:
AußenØ 50 x 125 mm, für RohraußenØ 63 mm Gewicht ca. 156 g
QFS-40
Built-in float level switch
The QFS-40 built-in float switch is designed for low-cost monitoring of liquids in containers.
Technical Data
Switch housing
:
PPH| PVDF
Seal
:
NBR (PPH) | FPM (PVDF)
Operating temperature
:
PPH max. 80 °C| PVDF max. 100 °C
Operating pressure
:
max. 10 bar
Mounting position
:
horizontal (±30° von der Horizontalen)
Contact assembly
:
Schliesser-, Öffnerkontakt (je nach Einbau)
Electrical connection
:
PVC-Kabel
Switching capacity
:
max. 230 V AC/DC| max. 40 VA, max. 2 A
The measuring transducer Tk101 and Tk101Ex are built directly into the connection boxes of our Liquid Level Measuring Instruments of type TK-30.
Properties
Operating temperature
:
-20...+60 °C
Storage temperature
:
-40...+80 °C
Ex-protection
:
siehe Zertifikat
CE marking
:
siehe Konformitätserklärung
Input
Resistance range in three-wire circuit
:
4...10 kΩ
Measuring current
:
0,8 mA @ RE = 4 kΩ
Measuring current
:
0,33 mA bei RE = 10 kΩ
Measuring voltage
:
3,3 V
Supply/Output
2-wire
:
4...20 mA
Voltage(Um)
:
11...28 V DC
Burden / load
:
0...800 Ω |RBürde max = [(Um - Um min) / 0,02] Ω
Output signal in case of error
:
max. 24 mA
Fault influences
Max. Total error
:
± 1 %
Temperature influence
:
-0,015 % / °C
Supply voltage influence
:
0,025 % / V
Setting range
Full deflection
:
60...105 %
Zero point adjustment
:
0...25 %
HD-100 | HD-102 | HD-104
Hydrostatic immersion probes (0.8...10mWS)
Continuous and precise level measurement in unpressurised, open basins and tanks as well as underground applications such as shafts, wells and boreholes.
Properties
Protection class EN60529
:
IP68
Operating temperature
:
-10...70 °C (PVC: -10...60 °C)
Storage temperature
:
-25...70 °C (PVC: -10...60 °C)
Power supply
:
15...30 V DC
power
:
max. 25 mA
Output
:
2-Leiter-Technik
Measuring range
:
0,8...10 mWs (Standard)
Overpressure
:
abhängig vom Messbereich
Deviation from characteristic curve
:
Nichtlinearität,
Insulation resistance
:
> 100 kΩ
Short-circuit resistance
:
permanent
Reverse polarity protection
:
keine Schädigung o. Funktion bei vertauschten Anschlüssen