Chapter 1. Getting Started
10 Model PM880 Portable Hygrometer User’s Manual
1.4.2 Entering Calibration Data
The PM880 needs moisture and/or pressure calibration data for probes. You
must enter this data when setting up:
• a new unit
• a probe(s) sent back to the factory for calibration
Be sure you have the Calibration Data Sheets that are supplied with each
GE probe. Each Calibration Data Sheet consists of a list of data points that
you will need to enter or verify, and lists its corresponding probe serial
number. Calibration Data Sheets are usually packed inside the probe cases.
Since the PM880 enables you to use more than one probe, the meter
provides a place to enter the probe serial number to help you match the
probes to the corresponding site files. The probe serial number is stored as
part of the site file.
Use the sections which follow to enter the serial number, and the moisture
and pressure calibration data for the probes.
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