GMH 5430, Conductivity Meter, Waterprooft, without Probe
- Measurement of conductivity, resistance, salinity, TDS
- Large double display with background illumination
- Automatic cell correction with reference solutions
- incl. calibration protocol
Application:Mobile use for:
+ industry and craft
+ measurements of waters and aquaristics, fi sh farming
+ drinking water monitoring, process control, soil measurements
+ food production and control
+ quality management
Additional applications at laboratory:
+ medicine, pharmacy, chemistry
Further functions:Cell correctionManually or automatically with reference solution
Automatic temperature compensation:As conductivity depends strongly on temperature, each conductivity value is only valid at the corresponding temperature. Therefore the device supports temperature compensation, i.e. referring the conductivity to a reference temperature (selectable: 20 °C or 25 °C).
Supported types of compensation:
- nLF: Non-linear function of natural waters acc. to DIN EN 27888 (ISO 7888) (Reference temperature 25 °C)
- Lin: adjustable linear compensation
- off: no compensation
Salinity measurement:
Salinity means the sum of the concentrations of all dissolved salts in water.
The unit is g/kg. (equals PSU = Practical Salinity Unit).
TDS measurement (total dissolved solids)TDS means the mass concentration of dissolved media in a liquid. The unit is mg/l.
GLP (Good Laboratory Practice)adjustable calibration intervals
Technical data:
Measuring range: Number of meas. ranges: 5
Smallest range: 0.000 ... 5.000µS/cm (cell constant 0.01/cm)
or 0.0 ... 500.0µS/cm (cell constant 0.1 ... 1.2/cm (standard))
Biggest range: 0 ... 5000µS/cm (cell constant 0.01/cm)
or 0 ... 1000mS/cm (cell constant 0.1 ... 1.2/cm (standard))
Resistivity: 0.005 ... 500.0kOhm * cm (depends on cell constant)
TDS: 0 ... 5000mg/l (depends on cell constant)
Salinity: 0.0 ... 70.0 (g salt / kg water)
Temperature: -5.0 ... +100.0°C, Pt1000 or NTC (10k)
Supported cell constants: 4.000 ... 15.000/cm; 0.4000 ... 1.5000/cm; 0.04000 ... 0.15000/cm; 0.004000 ... 0.015000/cm
Accuracy (at nominal temperature = 25°C):
Conductivity: ±0.5% of m.v. ±0.1 % FS (depends on electrode)
Temperature: ±0.2K
Connection:
Conductivity, temperature: 1 x 7-pole bayonet connector for connection of different measuring cells, supported temperature sensors: Pt1000 or NTC (10k)
Interface / ext. supply: 4-pole bayonet connector for serial interface and supply (with accessory: USB adapter USB 5100)
Display: 4 ½ digit 7-segment, illuminated (white)
Operating conditions: Device: -25 ... +50°C, 0 ... 95% RH (non-condensing)
Storage temperature: -25 ... +70°C
Background illumination: duration adjustable (off, 5s ... 2min.)
Power supply: 2 x AAA battery (included), power consumption 6.25mA
Battery life: approx. 160h (without background illumination)
Protection class: IP65/IP67
Housing: Impact-resistant ABS plastic housing, integrated pop-up clip
Dimensions: 160 x 86 x 37mm³ (H x W x D) incl. silicone protection cover
Weight: approx. 250g incl. battery and protection cover
Scope of supply: Device, K 50 BL, battery, calibration protocol, manual
The instrument is supplied without a probe. This needs to be ordered separately.
Optional accessories:Conductivity electrodes: LF 200 RW, LF 210, LF 400 or LF 425
GNG 5/5000 Plug-in power supply 5VDC, suitable for devices of the series GMH 5000
GKK 3500 Device case (394 x 294 x 106mm³) with eggcrate foam and cut-outs for 1 device
Conductivity control solutions: GKL 100: 1413µS/cm; GKL 101: 84µS/cm; GKL 102: 50mS/cm
GEH 1 Electroce holder for measuring electrodes with plastic handle
