Amiad Water Systems | 2019
TEQUATIC™ PLUS F-150 Filter, C-series Skid
13
Installation
2.5 External Controls and Sensors
The following are external controls and sensors for the system that are not included with the skid.
2.5.1 Feedwater Tank
To prevent the system from running dry, the system can incorporate a feedwater tank level switch.
The sensor selection should be appropriate for the water conditions present. The sensor should supply
an “open” or “closed” circuit, dry contact, to indicate the no-run condition. The control system will
send +24VDC to the sensor and look for the same signal to return to indicate a closed circuit. Logic
can be selected in the HMI settings screen. Refer to “
” on page 20 for all options and
setpoints for sensor.
2.5.2 Product Tank
To help prevent the tank overflow, an output tank from the skid (effluent or concentrate) can
incorporate a tank level switch. The sensor selection should be appropriate for the water conditions
present. The sensor should supply a dry contact to indicate the no-run condition. The control system
will send +24VDC to the sensor and look for the same signal to return to indicate a closed circuit.
Logic can be selected in the HMI settings screen. Refer to “
and setpoints for sensor.
2.5.3 External Alarm
An external alarm may be connected to the system to alert an operator of a problem with the system.
The alarm may be audible, visual or both. This relay output is a normally-open contact closure (dry
contact).
2.5.4 Flow Meter
An optional flow meter with 24VDC pulse or 4-20mA analog output may be connected to the system to
measure the filtrate flow rate. The pulse output must be settable in the format of maximum frequency
with the corresponding flowrate. The analog output must be settable by assigning a flow rate to the
20mA signal, 4mA will be assumed 0 flow. Refer to “
