Forbes Marshall Aquacon 4000, Инструкция по эксплуатации, Страница: 8 / 59

Instruction Manual Aquacon 4000
3
2 PRODUCT DESCRIPTION
2.1 Description of unit
The Forbes Marshall Aquacon 4000 is used for measuring conductivity and temperature
values. The conductivity values can be measured using limit or P/PI control. The transmitter is
available in two versions, one for panel mounting and one for wall mounting in a enclosure.
The transmitter can be used for applications such as water treatment and monitoring,
galvanic-decontamination, chemical processing, food processing, clean or wastewater control
and neutralization processes.
This transmitter has many user-friendly and safety features which include:
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Menu-driven program that simplifies set-up.
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Built-in non-volatile memory to ensure that calibration and other information are not
erased if power supply fails.
•
Push-button for calibration and sensor offset adjustment from the keypad.
•
Automatic temperature compensation (ATC).
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Manual temperature compensation setting without the ATC probe, with independent
setting for calibration and process temperature.
•
Two galvanically isolated current outputs 0/4...20mA.
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0 to 2000 seconds time delay adjustment on all relays – minimizes false alarms.
•
Separately adjustable high and low set-point hysteresis (dead bands) prevent chattering
of relays around the set points.
•
Three control modes: limit controller, P controller and PI controller (P/PI controller as
pulse length or pulse frequency).
•
Large dual display LCD for easy reading with clear multiple annunciators, alarm status,
operational and error messages.
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Two switching contacts as set-point relays.
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Separate alarm relay alerting you to set point limits exceeded for a certain time and if the
Pt100/Pt1000 wires are broken or disconnected during the ATC function.
•
Wash relay.
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Hold function to freeze output current (0/4...20mA) and release control relays.
•
LED indicators signal control activities to visually monitor transmitter status from a
distance.
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Protection against electromagnetic interference. ( Available for panel mount only)
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Back lit and UV light protected LC display.