waterproof portable pH / redox measuring device | GMH 5550
571,00 EUR
incl. 19 % VAT excl. shipping costs
delivery time usually 0-4 working days for standard construction type
Product.Nr.: GMH5550Product Description
waterproof portable measuring device for pH/redox, with analog output and data logger, without electrode
general information:
- GLP features (good laboratory practice)
- large dual display with background illumination
- high resolution (0.001 pH / 0.1 mV)
- incl. calibration protocol
- with analog output and data logger
applications:
- measurements in water bodies, fish keeping, aqua farming
- monitoring of drinking water and processes, soil measurements
- food production and monitoring
- laboratory: Medicine, pharmaceutics, chemistry
- quality management
| measuring ranges: | pH: -2.000 pH to 16.000 pH (resolution selectable) redox/mV: -2,000.0 mV to +2,000.0 mV (resolution selectable) (based on hydrogen system DIN38404: -1,792 mVH to +2,207 mVH) temperature: -5.0°C to +150.0°C; +23.0°F to +302.0°F rH: 0.0 rH to 70.0 rH |
| accuracy: | pH: ±0.005 pH redox/mV: ±0.05 % FS (mV or mVH) temperature: ±0.2 °C (in the range -5.0°C to +100.0°C) rH: ±0.1 rH |
| connections: | pH, redox: BNC socket, compatible to standard BNC-plugs and waterproof BNC-plugs, additional banana jack (4 mm) for separate reference electrode, input resistance: 1012 Ohm temperature: 2 banana jacks (4 mm) for temperature probes (Pt1000 or NTC 10K) interface/supply: 4-pole bajonet connector for serial interface and supply (with accessory USB 5100) |
| operating conditions: | -25°C to +50°C; 0 % to 95 % r.h. (non-condensing) |
| display: | two 4 ½ digit 7-segment displays (15 mm and 12 mm) |
| pH calibration: | automatical: 1-, 2- or 3-point calibration, standard buffer or buffer acc. to DIN19266 (A, C, D, F, G) manual: 1-, 2- or 3-point calibration |
| power supply: | 2x AAA battery, power consumption: <1.0 mA |
| battery life: | 1,000 hours |
| housing: | impact resistant ABS housing with pop-up clip |
| ingress protection: | IP65 / IP67 |
| dimensions: | 160 x 86 x 37 mm (H x W x D) incl. protection cover |
| weight: | 250 g incl. battery and protection cover |
further functions:
status display for pH electrode and battery: bar graph display
background illumination: duration adjustable (off, 5 s to 2 min.)
automatic temperature compensation:
In operation mode „pH“ and with connected temperature probe an automatic temperature compensation (ATC) is possible in the range 0°C to +105°C. Without temperature probe a manual input of the temperature is possible.
pH calibration:
1-, 2- or 3- point calibration with characteristic curve for standard buffer, buffer according to DIN19266 (A, C, D, F, G) or manual buffer selection. The temperature dependency of the buffer is compensated automatically when the buffer detection is automatical.
1-, 2- or 3- point calibration with characteristic curve for standard buffer, buffer according to DIN19266 (A, C, D, F, G) or manual buffer selection. The temperature dependency of the buffer is compensated automatically when the buffer detection is automatical.
Permissible electrode data: asymmetry: ±55 mV / slope: 45 mV / pH to 62 mV / pH.
The condition of pH-Electrode is checked at each calibration.
The condition of pH-Electrode is checked at each calibration.
redox measurement (ORP):
There are two choices:
„mV“ standard redox or mV measurement
„mVH“ conversion to hydrogen system acc. to DIN38404 part 6
„mV“ standard redox or mV measurement
„mVH“ conversion to hydrogen system acc. to DIN38404 part 6
rH measurement:
Calculation of the rH value by means of a redox measurement and by manual entering of the pH-value.
calibration interval:
The device asks for a recalibration after a selectable time period (1 to 365 days or inactive).
The device asks for a recalibration after a selectable time period (1 to 365 days or inactive).
calibration memory:
last 16 calibrations
last 16 calibrations
analog output:
0 V to 1 V, freely scalable, connection via 4-pole bayonet socket, resolution 13 bit,
accuracy 0.05 % at nominal temperature
0 V to 1 V, freely scalable, connection via 4-pole bayonet socket, resolution 13 bit,
accuracy 0.05 % at nominal temperature
data logger:
with measuring point input, adjustable cycle time: 1 s to 1 h
recording time: 416 days at intervall 1 h,
data logger: cyclic: 10,000 data sets, manual: 1,000 data sets
with measuring point input, adjustable cycle time: 1 s to 1 h
recording time: 416 days at intervall 1 h,
data logger: cyclic: 10,000 data sets, manual: 1,000 data sets
instruction manual as .pdf:
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