Chapter 9. Features and Specifications
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Model PM880 Portable Hygrometer User’s Manual
9.2.1 M Series and TF Series Moisture Probes (cont.)
Although the M and the TF Series probes may be installed directly in the
process line, more often these probes are inserted into a sample system. The
sample system protects the probes and enables the user to easily remove the
probes for calibrating, servicing and cleaning. Sample systems also control
various process and environmental conditions so that the moisture probe or
sample system operates within specifications.
The M and the TF Series probes, when operated with a BASEEFA-
approved PM880, are intrinsically safe and designed to meet the
requirements of IEC/CENELEC zone 0 areas.
The M and TF Series probes measure moisture content in a standard range
from –110°C to 20°C (–166°F to 68°F) dew/frost point temperature and
optionally from –110°C to 60°C (–166°F to 140°F). Both probes optionally
measure temperature in a range of –30°C to 70°C (–22°F to 158°F). The TF
probe optionally measures pressure from 30-300 / 50-500 / 100-1000 /
300-3000 / 500-5000 psig.
9.2.2 Moisture Image Series Probe
The Moisture Image Series probe measures moisture, temperature
(optional), and pressure (optional). The Moisture Image Series probe has its
own electronics module that consists of a built-in microcontroller with
16-bit resolution. See Figure 77.
Figure 77: Moisture Image Series Probe
GE PANAMETRICS
g
Electronics Module
