Maera (4390 Series) Level transmitters - Liquids level probe - Critical Applications:

Product Specifications:

Download 4392 Datasheet

Download 4391 Datasheet

Download 4390 Datasheet

Download Operating Instructions

Download Installation Schematic

Download NZ Catalogue Page


4390
4392 / 4390

4391
4391

Description:

The Maera (4390 Series) level probes are 2-wire 4~20mA submersible transmitters used for the hydrostatic measurement of levels in liquids.
The pressure is converted into an electrical signal.
Applications include: level measurement in wells, boreholes, wastewater plant, vessels, and standing or running water.

4392 Features:

  • Housing; 225mm x ø25mm, stainless steel.
  • Protection; IP68. EN60529 to 400m.
  • Cable; polyurethane Ø 9mm.
  • Accuracy; on full scale, < 0.5% min @ 20°C.
  • Operating temp; 0~50°C.
  • Temp coefficient; ±0.2% / 10°C.
  • Output; 4~20 mA, 2 wire, loop powered.
    UT = 10...30V dc.
  • Load resistance; max. RL < (US-10V) / 0.02A.
  • 3x Overpressure - up to 40 bar.
  • Surge and Reverse polarity protection.
  • Integrated OVP (lightning) protection (4392).
  • JUMO Datasheet; 40.4392 | 40.4391 | 40.4390

Ordering Information:

4391-242-1.0 0 – 1 metre H2O, with 5 metres of cable.
4392-242-2.5 0 – 2.5 metres H2O, with 10 metres of cable.
4392-242-4.0 0 – 4 metres H2O, with 10 metres of cable.
4392-242-6.0 0 – 6 metres H2O, with 10 metres of cable.
4392-242-10 0 – 10 metres H2O, with 15 metres of cable.
4392-242-25 0 – 25 metres H2O, with 30 metres of cable.
4392-242-40 0 – 40 metres H2O, with 50 metres of cable.
4392-242-60 0 – 60 metres H2O, with 65 metres of cable.
Note: Other ranges and cable lengths are available on request.
 
Common Accessories for Level Transmitters:
NAA-101 Terminal Box with filter.
Protection: IP65.
Size: 93 x 93mm.
NAA-102 Terminal Box with filter and integral OVP.
As above, with Overvoltage protection:
Voltage clipping: slow - 90 Vpp, fast - 33 Vpp.
Line resistance: 13 ohm.
Max rating: 600 W / 1ms.
NAA-209 Hanging Cable Clamp.
LPN-OVP (Rev 1) DIN Rail mount OVP unit.
For best possible protection in Lightning prone areas, we strongly recommend using OVP protection at both ends of the installation.
Our LPN-OVP overvoltage protection device is ideal for this purpose.

Terminal Box with filter
NAA-101/2
Hanging Cable Clamp
NAA-209

Note: A close proximity or direct lightning strike may compromise the OVP protection.

 

Please Note: Intech Instruments Ltd are the New Zealand distributor for JUMO products. Please contact the JUMO distributor in your country if you require sales or service support for JUMO products.