complete set for measurement of pH / ORP / temperature | GMH 3551-SET135
Product Description
set GMH 3551-SET135 consisting of:
- device GMH 3551
- pH electrode GE 135
- buffer capsules 5x GPH 4, 5x GPH 7
- 2 plastic wide mouth bottles GPF 100
- case GKK 3001
general information:
- redox mode allows automatic conversion to hydrogen system
- temperature compensation
- automatic buffer detection
- evaluation of electrode quality
- analog output
- data logger
- min/max alarm
specifications:
| device GMH 3551 | |
| measuring ranges: | temperature: -5.0°C to +150.0°C or 23.0°F to +302.0°F pH: 0.00 pH to 14.00 pH redox (ORP): -1,999 mV to +2,000 mV based on hydrogen system: -1,792 mVH to +2,207 mVH (DIN 38404) rH: 0.0 rH to 70.0 rH |
| accuracy (device) ±1 digit at nominal temperature = 25°C: | temperature: ±0.2°C (at -5°C to +100°C) pH: ±0.01 pH redox (ORP): ±0.1 % FS (mV or mVH) rH: ±0.1 rH |
| sensor connections: | temperature: 2 x 4 mm banana socket for Pt1000, 2-wire pH, redox: BNC socket |
| display: | two 4-digit LCD displays (12.4 mm or 7 mm high) |
| working temperature: | 0°C to +50°C |
| storage temperature: | -20°C to +70°C |
| interface: | serial interface, direct connection to a PC via electrically isolated interface converter GRS 3100, GRS 3105 or USB 3100 N (accessories). |
| power supply: | 9 V battery, d.c. connector for external 10.5 V to 12 V DC voltage supply (suitable power supply unit: GNG 10/3000) |
| battery life: | approx. 300 h |
| housing: | impact-resistant ABS plastic housing, membrane keyboard, transparent panel, integrated pop-up clip |
| dimensions: | 142 x 71 x 26 mm (H x W x D) |
| weight: | approx. 170 g |
| pH electrode GE 135 | |
| measuring range: | 0 pH to 14 pH -5°C to +80°C |
| conductivity: | >150 μS/cm |
| temperature measurement: | integr. Pt1000 class B |
| water-proof: | yes |
| pressure resistant: | 5 bar |
| cable: | 1 or 2 m, others upon request |
| electrolyte: | gel electrolyte |
| diaphragm: | 1x ceramic large screw-type |
| electrode shaft: | PC, Ø 12 mm x 120 mm |
| features: | submergible, water-proof IP67 (also BNC-plug) |
| connection: | BNC |
| application areas: | on-site measurements, fish farming, beverages, sea water, swimming pool water, drinking water |
further functions GMH 3551:
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:
Buffer detection, temperature compensation and sensor rating according to calibration result (from 10 % to 100 %) is done automatically.
1-, 2- or 3- point calibration with standard buffer, buffer according to DIN19266 (A, C, D, F, G) or manual buffer selection.
Buffer detection, temperature compensation and sensor rating according to calibration result (from 10 % to 100 %) is done automatically.
1-, 2- or 3- point calibration with standard buffer, buffer according to DIN19266 (A, C, D, F, G) or manual buffer selection.
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 history (additionally)
redox measurement (ORP):
There are two choices:
There are two choices:
„mV“: standard redox or mV measurement
„mVH“:
temp. compensated conversion to hydrogen system acc. to DIN38404 part
6, table 1 based on the standard redox electrode (e.g. GE 105 with Ag /
AgCl system and 3 mol KCl).
rH measurement:
Calculation of the rH value by means of a redox measurement and by manual entering of the pH-value. The pH-value may also be taken from a previous pH measurement.
Calculation of the rH value by means of a redox measurement and by manual entering of the pH-value. The pH-value may also be taken from a previous pH measurement.
analog output:
0 V to 1 V, not changeable 0 V to 1 V ≙ 0 pH to 14 pH or -2,000 mV to +2,000 mV, connection via 3-pole jack socket Ø 3.5 mm, resolution 13 bit, accuracy 0.05 % at nominal temperature.
0 V to 1 V, not changeable 0 V to 1 V ≙ 0 pH to 14 pH or -2,000 mV to +2,000 mV, connection via 3-pole jack socket Ø 3.5 mm, resolution 13 bit, accuracy 0.05 % at nominal temperature.
Analog output freely scalable.
cyclic 10,000 data sets, manual: 1,000 data sets (with measuring point input, 40 adjustable measuring point texts or measuring point numbers).
instruction manual GMH 3551 as .pdf:
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