Introduction; Description Of Unit; Applications - EUTECH INSTRUMENTS ALPHA CON 1000 CONDUCTIVITY CONTROLLERTRANSMITTER (REVISION 3) Instruction Manual

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INTRODUCTION

1.1

Description of Unit

Thank you for purchasing the ¼ DIN alpha-1000 series Conductivity process controllers. This unit
is used for measuring the Conductivity of a solution, either in micro-Siemens or milli-Siemens, one
at a time, and the operational mode is switchable from the menu. You can use this unit to
measure Conductivity with limit control. This controller has many user-friendly and safety features
which include:
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Menu-driven program that simplifies set-up
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Ten ranges of Conductivity measurements-software selectable (Appendix 2).
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Built-in memory backup to ensure that calibration data and other information are not
erased if power supply fails
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Automatic temperature compensation (ATC) with Pt100 or Pt 1000
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Manual temperature compensation with independent setting for calibration and process
temperature
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Temperature coefficient variable between 0.00 to 10.00 % per
compensation curve stored in memory. Reference temperature at 25
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0 to 1999 second time delay adjustment on all relays – minimise false alarms
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Separately adjustable high and low set point hysteresis (dead bands) prevents chattering
of relays around the set points. Selectable Filter function stabilises rapid measurement
changes
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Four operating modes: limit, display monitor , proportional pulse length or proportional
pulse frequency control.
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Large dual display LCD for easy reading with clear multiple annunciators, alarm status and
operational message annunciators
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Two switching contacts as set-point triggering relays and an alarm output relay
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Separate alarm relay alerts you when set points have exceeded the limits and if the
Pt100/Pt1000 wires are broken or disconnected during the ATC function
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Hold function freezes output current (0/4...20mA) and releases control relays
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LED indicators signal control activities to monitor controller status from a distance
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Protection against electromagnetic interference - galvanically isolated 0/4 - 20mA output
provides safety for data logging and control purposes
1.2

Applications

Use this controller in panel mounted enclosures for applications in water treatment and
demineralization, waste water treatment and neutralization processes.
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C. Separate pure water
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C.
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