LGC2 Level probe

Teknik Veriler

Equipment architecture

As standard, the complete measuring system consists of a level probe and a transmitter power supply unit with a supply voltage of 10.5 to 30 V DC.

Construction type

device with rod probe

Series

LGC2

Rated voltage

U r level probe and Pt100 (optional): - 10.5 ... 35 V DC (non-hazardous area) - 10.5 ... 30 V DC (hazardous area) temperature head transmitter (optional): 8 ... 35 V DC

Current consumption

level probe and Pt100 (optional): max. ≤ 23 mA, min. ≥ 3.6 mA temperature head transmitter (optional): max. ≤ 25 mA, min. ≥ 3.5 mA

Power consumption

level probe and Pt100 (optional): - ≤ 0.805 W at 35 V DC (non-hazardous area) - ≤ 0.690 W at 30 V DC (hazardous area) temperature head transmitter (optional): ≤ 0.875 W at 35 V DC

Reverse polarity protection

Reverse voltage protection is integrated in the level probe and in the temperature head transmitter changing the polarities has no impact on operation.

Residual ripple

level probe and Pt100 (optional): No impact on the 4 to 20 mA signal up to ±5 % residual ripple within the permitted voltage range. temperature head transmitter (optional): U ss ≥ 5 V at U ≥ 13 V, f max. = 1 kHz

Surge protection

level probe and Pt100 (optional): - integrated overvoltage protection acc. to EN 61000-4-5 (500 V symmetrical/1000 V asymmetrical) - overvoltage protection ≥ 1.0 kV, external if necessary temperature head transmitter (optional): provide overvoltage protection, externally if necessary

Input signal

level probe: change in capacitance Pt100 (optional): change in resistance temperature head transmitter (optional): Pt100 resistance signal, 4-wire

Measured variable

level probe: hydrostatic pressure of a liquid Pt100 (optional): temperature temperature head transmitter (optional): temperature

Measuring range

level probe: - predefined pressure measuring ranges in bar, see type code - customer-specific measuring ranges, factory-calibrated Pt100 (optional): temperature measurement from -10 ... 70 °C (+14 ... +158 °F)

Output signal

level probe: 4 ... 20 mA, 2-wire for hydrostatic pressure measured value Pt100 (optional): temperature-dependent resistance value temperature head transmitter (optional): 4 ... 20 mA Analog for temperature measured value, 2-wire

Signal range

3.8 ... 20.5 mA

Directive 2014/30/EU

EN 61326-1:2013 , EN 61326-2-3:2013

Directive 2014/35/EU

EN 61010-1:2010

Degree of protection

IEC 60529:2001

Resolution

current output: 1 µA

Reference operating conditions

level probe and Pt100 (optional): acc. to IEC 60770, T amb = constant in the range: +21 ... +33 °C (+70 ... +91 °F) temperature head transmitter (optional): calibration temperature 23 °C (+73 °F) ± 5 K

Long-term drift

level probe and Pt100 (optional): - ≤ 0.1 % of URL/year - ≤ 0.25 % of URL/5 years temperature head transmitter (optional): ≤ 0.1 K per year

Warm-up time

level probe: < 6 s Pt100 (optional): 20 m temperature head transmitter (optional): 4 s

Yanıt Süresi

level probe: 400 ms (T90 time), 500 ms (T99 time) Pt100 (optional): 160 s (T90 time), 300 s (T99 time)

Installation position

vertical from above

Medium temperature

level probe and Pt100 (optional): - Ø22 mm and Ø42 mm: -10 ... +70 °C (+14 ... +158 °F) - Ø29 mm: 0 ... +50 °C (+32 ... +122 °F) temperature head transmitter (optional): -40 ... +85 °C (-40 ... +185 °F) (= ambient temperature), install temperature head transmitter outside the medium.