Paroscientific, Inc. Technical Note
Precision Pressure Instrumentation Doc. No. G8044 25 March 2005
©2005 Paroscientific, Inc.
2
How to Integrate Digiquartz® Intelligent Products
with
Campbell Scientific CR1000 Series Data Loggers
by
Mustafa Yilmaz
1. Introduction
One important step in scientific research is to observe a phenomenon for a period of time and collect data.
Conclusions are drawn after analyzing the data. As much as it is important to collect data, how data are
collected is equally vital. The quality and reliability of the data acquisition system are of utmost
importance since unreliable data can result in wrong conclusions. Besides being expensive and
ineffective, such tests can even jeopardize human life and property. Therefore, it is crucial to design a
proper test system with accurate, reliable, repeatable, stable data collection systems including sensors.
Campbell Scientific and Paroscientific, two leading companies in their fields, provide components of a
scientific data acquisition system to collect data to observe geophysical and environmental applications.
Campbell Scientific designs and manufactures data loggers. Paroscientific designs and manufactures high
accuracy pressure sensors including depth sensors, portable pressure standards and meteorological
measurement systems. Campbell Scientific data loggers and Paroscientific instruments are widely used to
capture high accuracy, high resolution, and reliable data for scientific applications. The purpose of this
technical note is to facilitate the integration of Digiquartz® Intelligent Instruments with Campbell
Scientific CR1000 data logger.
2. Campbell Scientific CR1000 Data Logger
Data loggers are highly accurate voltmeters that are a part of a data acquisition system that converts
electrical signals into data and stores them in its internal memory. Data loggers can measure most sensors
with electrical output.
The CR1000 is a low power, wide temperature range data logger with flexible programming and
telecommunication options. It comprises the most advanced data logging technology from Campbell
Scientific. It provides precision measurement capabilities in a rugged, battery operated package. The
data logger includes a CPU and analog and digital inputs and outputs. The on-board programming
engine includes data processing and analysis routines. LoggerNET, PC200 and PC400 software provide
program generation, editing, data retrieval and real-time monitoring.
3. Digiquartz
®
Intelligent Products
Paroscientific Intelligent Transmitters consist of a Digiquartz® Pressure Transducer and a digital
interface board in an integral package. Commands and data requests are sent via two-way RS-232 or RS-
485 serial interfaces. Digital outputs are provided directly in engineering units with typical accuracy of
0.01% over a wide temperature range. Output pressure is fully thermally compensated using a quartz
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