Features
- Made in Germany
- Display of resistivity, salinity or TDS (total dissolved solids)
- Conforms to Drinking Water Ordinance requirements (TrinkwV 2001) and DIN EN 27888
Intelligent set GMH 3431 with 2-pole measuring cell for tap water, etc., GMH 3451 4-pole worry-free package also suitable for continuous measurement in high conductivity ranges (e.g. salt water).
Specification
Measuring range
Conductivity 0.0..200.0 μS / cm / 0..2000 μS / cm / 0.00..20.00 mS / cm / 0.0..200.0 mS / cm / 0..400 mS / cm (only GMH 3451) / Manually adjustable or AutoRange
Spec. resistance 0.005..100.0 kOhm * cm
Salinity 0.0..70.0 g / kg water
TDS 0..1999 mg/l
Accuracy (±1 digit) (at rated temperature = 25 °C)
Conductivity ±0.5 % of measured value ±0.3 % FS or ±2 μS/cm
Temperature ±0.2 % of measured value ±0.3 K
Cell correction Manually adjustable 0.800..1.200 cm-1 or automatically with selectable reference solutions
Temperature compensation：Automatically or deactivatable, via temperature sensor integrated in the sensor
Compensation type
nLF: Non-linear function of natural water ac cording to DIN EN27888 (ISO 7888) (Adjustable reference temperature: 20 °C or 25 °C)
Lin: Linear compensation of 0.3..3.0 % / K (Adjustable reference temperature: 20 °C or 25 °C)
off: No compensation.
Conductivity 0.0..200.0 μS / cm / 0..2000 μS / cm / 0.00..20.00 mS / cm / 0.0..200.0 mS / cm / 0..400 mS / cm (only GMH 3451) / Manually adjustable or AutoRange
Spec. resistance 0.005..100.0 kOhm * cm
Salinity 0.0..70.0 g / kg water
TDS 0..1999 mg/l
Accuracy (±1 digit) (at rated temperature = 25 °C)
Conductivity ±0.5 % of measured value ±0.3 % FS or ±2 μS/cm
Temperature ±0.2 % of measured value ±0.3 K
Cell correction Manually adjustable 0.800..1.200 cm-1 or automatically with selectable reference solutions
Temperature compensation：Automatically or deactivatable, via temperature sensor integrated in the sensor
Compensation type
nLF: Non-linear function of natural water ac cording to DIN EN27888 (ISO 7888) (Adjustable reference temperature: 20 °C or 25 °C)
Lin: Linear compensation of 0.3..3.0 % / K (Adjustable reference temperature: 20 °C or 25 °C)
off: No compensation.
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Note : Design and specifications are subject to change without notice.
Note : Please make sure the product and the device which connect with RS-485 are on common ground, avoid damaged product.