Ion-science Hydrosteel 7000 User Manual download pdf (Page 9)

Hydrosteel 7000 MANUAL Ion Science Ltd

Page 9 of 43

Unrivalled Detection. www.ionscience.com

Introduction to Hydrosteel 7000

Operation Cycle

Hydrosteel 7000 operates a 10 minute measurement cycle. At the end of each cycle, 4-20 mA outputs step

change to provide the most recent cycle data measurement, and store all data and diagnostic measurements

to the internal memory. The unit draws a controlled flow of sample gas from the probe into the unit, where

the concentration of hydrogen gas in the sample is measured. The instrument sequentially measures

hydrogen in sample gas drawn from the background probe (~3 minutes) and flux probe (~3 minutes). From

the differential response, the flux is calculated and data outputs are updated. The rest of the cycle (~4

minutes) is dedicated to clear down for a zero measurement and diagnostic measurements, as summarised

below.

Time

Operation

0 to 3 minutes

Hydrogen zero measurement

3 to 6 minutes

Hydrogen background reading

6 to 9 minutes

Hydrogen flux reading

9 to 9.5 minutes

Hydrogen sensor diagnostics

9.5 to 10 minutes

Data stored in memory & 4-20mA outputs updated

Connectivity

 1 mains power supply 15-24 V @ 34 mA in hazardous area

 4-20 mA output #1: hydrogen flux requiring loop power of 8-30 V @20 mA

 4-20 mA output #2: pipe temperature requiring loop power of 8-30 V @20 mA

 RS232 connection for optional interrogation of unit: all data is logged to the unit’s internal memory

probe connection.

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Ion-science Hydrosteel 7000 User Manual Page 9