417102012_LMI02.doc - 88 - Rev. 9-07.08
11 Technical Data
11.1 Casing
Model: Wall mounted
Dimensions: 184 x 223 x 82 mm (W x H x D)
Weight: Approx. 3 kg
Degree of protection: IP 65 in acc. with DIN 40050
Protection class: I
Housing ducts: 5 cable gland M16x1.5
11.2 Measuring cell
Model: Oval shape streamlined, with 8 mm measuring channel diameter
Material: Model: PEEK
(polyether ether ketone approved by German Federal Health Office
(BGA) and Food and Drugs Administration (FDA)
Model: PP (Polypropylene)
Dimensions: 39 x 50 mm (D x H)
Resistance to pressure: PN = 10 bar at 20°C
(see also pressure/temperature curve)
Temperature stability: Max. 130°C (PEEK) short time
Max. 90°C (PP) short time
Chemical resistance: Resistant to inorganic acids and lye and to additives in a
application concentration range of 0…. 3 wt..-%
Temperature probe:
NTC resistor (R25 = 214 kΩ) in stainless-steel immersion shell
Reaction time of
temperature sensor in
conductivity probe:
Approx. 30 s (90 % value)
Material of immersion shell: V4A, 1.4571
Sealing element: O-ring, EPDM 281
Length of connecting cable: 0.2 m (with 3 m, 6 m and 20 m extension cables, can be extended
up to max. 20 m)
Cable type: 7-pole special measuring cable with round connector M12
Measuring cable connector: - fixed on sensor side
- plug-in type with 7-pole round connector M12 on instrument side
11.3 Conductivity control
11.3.1 Conductivity measurement
Measuring principle: Induction principle
Measuring frequency: Approx. 10 kHz
Measuring ranges: 10 mS/cm = 20 mA
20 mS/cm = 20 mA
100 mS/cm = 20 mA
200 mS/cm = 20 mA (set ex-works!)
Selection of measuring
range:
Under MEASURING RANGE in the CONFIGURATION
FUNCTIONS menu
Conductivity display: mS/cm display with decimal point
Measuring accuracy: +/- 2 % of final value
Reproducibility: +/-1 % of final value
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