Greisinger GMH 3511 pH-, redox- (ORP-) en temperatuur-combimeter 610880

In water treatment plants, laboratories, and field service, technicians rely on the Greisinger GMH 3511 to capture pH, redox (ORP), and temperature with a single handheld meter. The 3-line LCD shows all three values simultaneously, while automatic or manual temperature compensation keeps readings accurate across changing conditions.

Key specifications

• pH measuring range: 0.00 to 14.00 pH, resolution 0.01 pH, accuracy ±0.02 pH (±1 digit)
• Redox (ORP) measuring range: -1999 to +2000 mV, resolution 1 mV, accuracy ±0.1% FS (±1 digit)
• Temperature measuring range: -5.0 to +150.0 °C, resolution 0.1 °C, accuracy ±0.2 °C (at 25 °C)
• Automatic or manual temperature compensation with Pt1000 sensor
• 1, 2, or 3-point automatic calibration
• Data logger capacity: up to 10,000 data sets (manual or cyclic)
• Serial interface (RS232 via 3.5 mm jack)
• Power supply: 9V battery or external 10.5-12V DC
• Battery life: approx. 3000 hours with alkaline battery
• Protection class: IP65
• Electrode connection: BNC (pH/Redox), 2-pin mini-DIN (Pt1000)
• Min/Max value memory, Hold function, Auto-Off

Why choose it

Rugged and precise, the GMH 3511 combines three essential water quality parameters in one IP65-rated housing. Its large data memory and serial output simplify documentation and transfer to a PC.

Ideal use cases

• Wastewater and drinking water analysis
• Aquaculture and environmental monitoring
• Laboratory quality control
• Field measurements in harsh conditions

Good to know

The device operates from 0 to +50 °C and supports a Pt1000 temperature probe for automatic compensation. A 9V battery or external DC supply powers the meter.