Greisinger G7500 Multifunction Meter for pH, ORP, Temperature, O2 Saturation, O2 Concentration, Conductivity (474132)

Measure pH across 0.00 to 14.00 with ±0.02 pH accuracy, plus ORP from -2000 to +2000 mV, temperature from -5.0 to +100.0 °C, dissolved oxygen saturation up to 400.0 % and concentration up to 40.00 mg/l, conductivity up to 200.0 mS/cm, salinity up to 70.0 ppt, and TDS up to 20.00 g/l. The G7500 is a versatile laboratory and field instrument for water analysis and process control.

Overview

The Greisinger G7500 combines seven measurement parameters in one handheld device: pH, redox (ORP), temperature, dissolved oxygen (saturation and concentration), conductivity, salinity, and TDS. Automatic temperature compensation (ATC) and manual compensation (MTC) ensure accurate readings across varying conditions. A large backlit LCD displays clear results, and the unit logs up to 10,000 data sets for later review via micro-USB.

What stands out

• Multi-parameter capability: pH, ORP, temperature, O2, conductivity, salinity, TDS
• High accuracy: ±0.02 pH, ±0.2 °C
• Automatic 1, 2, or 3-point pH calibration; 1-point O2 and conductivity calibration
• Data logging up to 10,000 sets with cyclic or manual recording
• IP65 front panel protection for demanding environments

Technical details

• pH range: 0.00 to 14.00, resolution 0.01 pH, accuracy ±0.02 pH at 25°C
• ORP range: -2000 to +2000 mV
• Temperature range: -5.0 to +100.0 °C, accuracy ±0.2 °C at 25°C
• Dissolved oxygen saturation: 0.0 to 400.0 % O2
• Dissolved oxygen concentration: 0.00 to 40.00 mg/l (ppm)
• Conductivity: 0 to 200.0 mS/cm (auto-ranging)
• Salinity: 0.0 to 70.0 ppt
• TDS: 0 to 20.00 g/l (ppt)
• Temperature compensation: automatic (ATC) and manual (MTC)
• Display: large backlit LCD
• Data logging: up to 10,000 data sets
• PC interface: micro-USB
• Power: 3x AA batteries or external 5V DC via USB
• Ingress protection: IP65 (front panel)
• Operating temperature: -20 to +50 °C

Our verdict

The G7500 is a comprehensive solution for professionals needing accurate multi-parameter water analysis in a portable, rugged design.