CS526 ISFET pH Probe
5. Overview
The submersible CS526 is designed to reliably provide accurate temperature
compensated pH measurements. The pH-sensitive element is SENTRON's Ion
Sensitive Field Effect Transistor (ISFET) semi-conductor, which includes a
silver / silver chloride - potassium chloride reference system. This technology
is the most significant breakthrough in pH testing in half a century and is the
most powerful pH testing technology available today.
The CS526 is suitable for demanding applications in laboratory and field. The
ISFET performs well in solutions with high solids, moderately aggressive
chemicals, and biological materials. Clogging and junction contaminating
conditions are well tolerated. See Section 11 Maintenance for cleaning
procedures.
CS526 electronics are embedded in durable PEEK material, which makes up
the sensor body. The absence of a glass electrode eliminates the potential
hazard of broken glass. The ISFET design considerably reduces the number of
acidic or alkaline errors in extreme pH conditions.
6. Specifications
Features
• Safety — the ISFET with durable PEEK material can be used safely in
applications where broken glass is a hazard to the user.
• Intelligent electronics — the CS526 combines the latest developments in
ISFET pH sensing technology with state-of-the-art signal processing.
This allows for accurate, fast and reliable results.
• Quality — designed and manufactured under stringent quality control
conditions in an ISO 9001 environment. Each sensor is individually tested
to the most demanding testing protocols, and the electronics comply fully
with
directives and with EMC standard IEC61326:2005.
Compatibility: CR800 / 850, CR1000, CR3000 dataloggers
Measurement
Range: 1 to 14 pH
Accuracy: ±0.2 pH with 2 point calibration
24 hr drift: < 0.15 pH (after 15 min soak in pH 7 at 25°C)
Operating
Temperature: 10° to 40°C
Water Pressure: 0 to 700 kPa (0 to 101.5 psi)
Storage Temperature: 20° to 30°C
Power Requirement
Source: 5 Vdc
Load: 15 mA maximum
Output: TTL logic, 2400 bps
8 data bits, no parity, 1 stop bit
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