pH / redox (ORP) / temperature measuring device | GMH 3531
278,00 EUR
inkl. 19 % USt -> Preis zzgl. Versandkosten
Lieferzeit in der Regel ca. 1 Woche
Art.Nr.: GMH3531Produktbeschreibung
pH/redox/temperature measuring device without accessories
general information:
- redox mode allows automatic conversion to hydrogen system
- temperature compensation
- automatic buffer detection
- evaluation of electrode quality
- analog output
specifications:
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 |
further functions:
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).
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.
![](http://www.gsg-industrietechnik.de/media/images/icon/datenblatt_e-pdf.gif)
instruction manual as .pdf:
![](http://www.gsg-industrietechnik.de/media/images/icon/anleitung_e-pdf.gif)
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