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Level-Relays NS 20 for conductive liquids can be used as monitors for 1 Level and for controlling a level between 2 electrodes.
Protection from running dry or overflow, monitoring of pumps for leaks, detection of leaks.
Controlling a level between minimum (elektrode E2) and maximum (E3). As long as E3 is dry, a magnetic valve is opened (or a pump is running) and liquid is influenting. As soon as maximum (E3) is reached, the NS 20 closes the valve. When the level falls below E2, the cycle starts new. In reverse also discharging of a container can be controlled.
Supply voltage Us | AC/DC 24 – 240 V < 5 VA | 0 / 50 / 60 Hz < 3 W |
---|---|---|
Tolerance | DC 20,4 - 297 V | AC 20 - 264 V |
max. voltage | < 6 Veff |
---|---|
max. current | < 250 μA |
Switching point | adjustable app. 5 kΩ ... 250 kΩ |
Switching point 5 kΩ | max. cable-length 2500 m max. capacity of cable 500 nF |
Switching point 250 kΩ | max. cable-length 50 m max. capacity of cable 10 nF |
Switch on-/off-delay | 0,1...10sec adjustable |
Tolerance | 25% |
Type of contact | 1 change-over-contact (CO) |
---|---|
Switching voltage | max. AC 415 V |
Switching current | max. 6 A |
Switching power | max. 2000 VA (ohmic load) max. 120 W bei DC 24 V |
Rated nominal current Ie for co | 3 A AC15 250 V 2 A DC13 24 V |
Recommended fuse | 3,15 A slow ( gL ) |
Contact life mechanical | 3 x 107 operations |
Contact life electrical | 1 x 105 operations at 240 V / 6 A 1 x 106 operations at 240 V / 2 A |
Reduction factor at cosϕ = 0,3 | 0,5 |
UL electrical ratings | 250 V ac, 3 A, general use 240 V ac, 1/4 hp, 2.9 FLA 120 V ac, 1/10 hp, 3.0 FLA C 300 |
Rated impulse withstand voltage | 4000 V |
---|---|
Overvoltage category | III |
Pollution degree | 3 |
Rated insulation voltage Ui | 250 V |
On-period | 100 % |
Rated ambient temperature range | -20 °C ... +60 °C (EN 60068-2-1 dry heat) |
EMC immunity | EN 61000-6-2 |
EMC emission | EN 61000-6-3 |
Vibration resistance (EN 60068-2-6) | 2…25 Hz ±1,6 mm 25 ... 150 Hz 5 g |
Design | K |
---|---|
Dimensions (B x H x T) | 75 x 22,5 x 110 mm |
Line connection 1 wire | each 1 x 0,75…2,5 mm2 |
Stranded wire with wire-end sleeves | each 1 x 0,14…1,5 mm2 |
Protection housing | IP 40 |
Protection terminals | IP 20 |
Attachment | Snap-mount on DIN-rail 35 mm according to EN 60 715 or screws M4 |
Weight | app. 100 g |
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Level-Relays NS 20 for conductive liquids can be used as monitors for 1 Level and for controlling a level between 2 electrodes.
Protection from running dry or overflow, monitoring of pumps for leaks, detection of leaks.
Controlling a level between minimum (elektrode E2) and maximum (E3). As long as E3 is dry, a magnetic valve is opened (or a pump is running) and liquid is influenting. As soon as maximum (E3) is reached, the NS 20 closes the valve. When the level falls below E2, the cycle starts new. In reverse also discharging of a container can be controlled.
Supply voltage Us | AC/DC 24 – 240 V < 5 VA | 0 / 50 / 60 Hz < 3 W |
---|---|---|
Tolerance | DC 20,4 - 297 V | AC 20 - 264 V |
max. voltage | < 6 Veff |
---|---|
max. current | < 250 μA |
Switching point | adjustable app. 5 kΩ ... 250 kΩ |
Switching point 5 kΩ | max. cable-length 2500 m max. capacity of cable 500 nF |
Switching point 250 kΩ | max. cable-length 50 m max. capacity of cable 10 nF |
Switch on-/off-delay | 0,1...10sec adjustable |
Tolerance | 25% |
Type of contact | 1 change-over-contact (CO) |
---|---|
Switching voltage | max. AC 415 V |
Switching current | max. 6 A |
Switching power | max. 2000 VA (ohmic load) max. 120 W bei DC 24 V |
Rated nominal current Ie for co | 3 A AC15 250 V 2 A DC13 24 V |
Recommended fuse | 3,15 A slow ( gL ) |
Contact life mechanical | 3 x 107 operations |
Contact life electrical | 1 x 105 operations at 240 V / 6 A 1 x 106 operations at 240 V / 2 A |
Reduction factor at cosϕ = 0,3 | 0,5 |
UL electrical ratings | 250 V ac, 3 A, general use 240 V ac, 1/4 hp, 2.9 FLA 120 V ac, 1/10 hp, 3.0 FLA C 300 |
Rated impulse withstand voltage | 4000 V |
---|---|
Overvoltage category | III |
Pollution degree | 3 |
Rated insulation voltage Ui | 250 V |
On-period | 100 % |
Rated ambient temperature range | -20 °C ... +60 °C (EN 60068-2-1 dry heat) |
EMC immunity | EN 61000-6-2 |
EMC emission | EN 61000-6-3 |
Vibration resistance (EN 60068-2-6) | 2…25 Hz ±1,6 mm 25 ... 150 Hz 5 g |
Design | K |
---|---|
Dimensions (B x H x T) | 75 x 22,5 x 110 mm |
Line connection 1 wire | each 1 x 0,75…2,5 mm2 |
Stranded wire with wire-end sleeves | each 1 x 0,14…1,5 mm2 |
Protection housing | IP 40 |
Protection terminals | IP 20 |
Attachment | Snap-mount on DIN-rail 35 mm according to EN 60 715 or screws M4 |
Weight | app. 100 g |
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