Heinrichs Messtechnik GmbH • Robert-Perthel-Straße 9 • 50739 Köln • Tel.: +49 (221) 49708-0 • info@heinrichs.eu
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Capacitive Level Meter
- Measuring length up to 4000mm
- Level indicator in percent, 4-20 mA analogue output
- Four devices for various applications
- For ATEX applications
The KOBOLD capacitive level indicators type NMC serve to measure liquid levels in tanks. They consist of a measuring probe and a connecting head with a plug-in evaluation module.
Depending on the operating conditions, different probes are available. The devices do not have any mechanically moving parts and therefore hardly any mechanical wear. The plug-in evaluation module can de changed easily so that the devices are really easy to maintain.
Applications
- Water or waterlike liquids
- Liquid food
- Chemical and aggressive liquids
- Oil
- Pharmaceutical liquids
Technical data
Measuring principle: capacitive (for liquids up to 1000 pF)
Probe length: 265…4000 mm (shorter versions on request)
Measuring error: <1,5 % of probe length
Temperature of medium:
- -20 … +90 °C
- -20 … +200 °C for NMC-H
Ambient temperature: -10 … +60 °C
Max. Pressure: -1 … +30 bar
Media DC-value: εr = min. 1,5
Materials:
- Housing: Polycarbonate
- Process connection:
- stainless steel 1.4305 (model NMC-N, NMC-H, NMC-T)
- PVDF (model NMC-S)
- Probe: stainless steel with PTFE coating (for model NMC-N and NMC-H)
- PVDF-coating for model NMC-S
- stainless steel probe 1.4305 with internal sensor (stainless steel for PTFE coating) for model NMC-T
Process connection:
- G 1 male for model NMC-N, NMC-H, NMC-T
- G 2 male for model NMC-S
- Adapter for model NMC-N, NMC-H, NMC-T: thread G 1 ¼, G 1 ½
- welding-in sleeve (not for NMC-S) Ø external 40 mm
Display:
- 4-line LCD, alphanumeric
- Display of % and mA (with one position after the decimal point)
Power supply:
- 10 … 35 VDC
- 12…30 VDC for ATEX
Electrical connection: 1 x M20 x 150
Output: 4-20 mA, 2-wire
Ingress protection: IP 65
ATEX:
Ex II 2/1 GD Ex ia IIC T4 Gb/Ga
Ex ia IIIC T85 ºC Db/Da
20 ºC<Ta<+60 ºC
