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The Portavo 904(X) PH is a portable
pH meter. A plain-text line on the high-
contrast LCD screen makes operation vir-
tually self-explanatory. The device variant
904 X PH is available for applications in
hazardous locations up to Zone 0.
The meter stands out by the following
features:
• Use of digital Memosens sensors
• Memosens sensors and DIN pH sensors
can be used on one device.
• A detachable quiver protects the sensor
and prevents it from drying out. Further-
more, it can be used for calibration.
Overview of the Portavo 904(X) PH
Quiver
• The rugged housing is made of a high-performance polymer. It provides high
impact resistance and dimensional stability even when exposed to extreme
moisture.
• Scratch-proof clear glass display, perfectly readable even after years
• Very long operating times with one set of batteries (4 x AA) or use of a Li-ion
battery for reliable operation even at high or very low operating temperatures
(Li-ion battery not suited for Portavo 904 X PH for application in a hazardous
location)
• Data logger with 5000 values
• Micro USB port for communication with Paraly SW 112 software for data
evaluation of digital sensors (Memosens)
• Sensoface icons provide single-glance information on the sensor condition
(page 41)
• Calibration with “Calimatic” automatic buffer recognition (page 18)
• Manual calibration by entering individual buffer values
• Real-time clock and indication of battery charging level
• At measuring temperatures from -20 to +100 °C the temperature detector can be
automatically identified.
