complete set for measurement of pH /ORP / temperature | GMH 3531-G135
Product Description
set GMH 3531-G135 consisting of:
general information:
- redox mode allows automatic conversion to hydrogen system
- temperature compensation
- automatic buffer detection
- evaluation of electrode quality
- analog output
specifications:
device GMH 3531 | |
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 125 | |
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 3531:
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.
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.
instruction manual GMH 3531 as .pdf:
Recommended products
case | GKK 300028,30 EUR |
|
power supply unit | GNG 10/300071,60 EUR |
|
serial interface converter | GRS 310093,10 EUR |
|
USB interface converter | USB 3100N84,60 EUR |
|
software for acquisition of measurement data | EBS 20M / 60M121,00 EUR |
|
ISO calibration certificate pH | WPP 9236,00 EUR |
|
ISO calibration certificate pH | WPP 3155,00 EUR |
|
pH / redox (ORP) / temperature measuring device | GMH 3531278,00 EUR |
|
working and calibration set for pH measuring devices | GAK 140060,70 EUR |
|
KCl electrolyte | KCL 3 M9,40 EUR |
|
pepsin cleaning solution | GRL 10010,00 EUR |
|
buffer solution | GPH-DOS 423,60 EUR |
|
buffer solution | GPH-DOS 723,60 EUR |
|
buffer solution | GPH-DOS 1023,60 EUR |
|
submergible pH electrode (incl. Pt1000 sensor) | GE 135 BNC179,00 EUR |
|
analog output cable | AAG2M35,00 EUR |
|
case | GKK 300155,30 EUR |