Bộ công tắc báo mức nước Gestra NRS 1-52
Technical data
Supply voltage
24 VDC, + / –20 %, 0.1 A
Fuse
external 0.5 A (semi-delay)
Power consumption
2VA
Connection of level electrode
2 inputs for level electrode NRG 10-52, NRG 16-52, NRG 16-36, NRG 16-4 and ER 5.-1,
4 poles with screen
Sensitivity of response
(Electrical conductivity of water at 25 °C)
>0.5 …< 1000 μS/cm or >10 …< 10 000 μS/cm (switch-selectable)
Outputs
2 volt-free change-over contacts,
8 A 250 V AC / 30 V DC cos φ = 1
De-energizing delay: 3 sec.
Provide inductive loads with RC combinations according to manufacturer’s speci cation to ensure interference suppression.
Indicators and adjusters
1 pushbutton “Test” for simulating MIN / MAX alarm, 2 red/green LEDs for indicating operating mode and MIN / MAX alarm,
1 green LED indicating “Power ON”,
1 code switch with 4 poles for changing the sensitivity
Housing
Housing material: base: polycarbonate, black
Front: polycarbonate, grey.
Terminal strips separately detachable.
Fixing of enclosure: Mounting clip on supporting rail TH 35, EN 60715
Electrical safety
Pollution degree 2.
Protection
Housing: IP 40 to EN 60529 Terminal strip: IP 20 to EN 60529
Weight
approx. 0.2 kg
Further conditions:
Ambient temperature
when system is switched on: 0 … 55 °C, during operation: –10 … 55 °C
Transport temperature
–20 … +80 °C (< 100 hours), defrosting time of the de-energized equipment before it can be put into operation: 24 hours.
Storage temperature
–20 … +70 °C, defrosting time of the de-energized equipment before it can be put into operation: 24 hours.
Relative humidity
max. 95%, no moisture condensation
Approvals
Type approval no. TÜV · WR / WB · 10-424 (see name plate)
