Advantage Controls MegaTronMT User Manual

16
2.4. Boiler Conductivity
&RQGXFWLYLW\RQERLOHUV\VWHPVFDQEHFRQ¿JXUHGIRU7LPHG6DPSOLQJ6DPSOHDQG+ROGRU&RQWLQXRXVIRU
the conductivity sampling method.
Timed sampling incorporates a sample timer which allows the boiler to be sampled at periodic intervals.
Sample intervals are adjustable from 1 minute to 99 hours, 59 min. Sample duration (on-time) is adjustable
from 1 second to 99 minutes, 59 seconds.
Sample and hold uses a sample timer for periodic sampling intervals. The unit will sample for its duration
and then hold the blowdown valve closed for a settable period (hold time). The conductivity is checked at
the end of the hold period, if additional blowdown is required the blowdown valve is held open for a preset
amount of time (blowdown time). Then sample cycle is repeated.
Pulse SampleDOORZVWKHXVHRIDGH¿QHG³SXOVH´W\SHIHHGWLPHUWRLQLWLDWHDVDPSOHEDVHGRQPDNHXS
water instead of the sample interval timer.
Continuous sample has a sample of boiler or condensate water go past the probe continuously. If the
UHDGLQJLVDERYHWKHVHWSRLQWEORZGRZQZLOOFRQWLQXHXQWLOWKHVHWSRLQWKDVEHHQVDWLV¿HG
SET POINT - What reading turns the relay on
DIFFERENTIAL - Amount reading changes by before
WKHUHOD\LVWXUQHGRႇ
HIGH ALARM - What reading generates a High alarm
QRWL¿FDWLRQ
LOW ALARM - What reading generates a Low alarm
QRWL¿FDWLRQ
2.5. Aux Inputs
Auxiliary inputs are the digital inputs for optional Flow Switch and other digital inputs such as low drum level
DODUPV)URPWKHVHPHQXVWKHXVHUFDQVHWLIWKH\ZDQWHDFKRIWKHDODUPV'LVSOD\HG5HPRWH1RWL¿FDWLRQ
both or none.
Note: Digital inputs can have the direction selected
between OPEN or CLOSED as the alarm polarity. If
set for CLOSED the input will be in alarm when it sees
a closed contact.

Advantage Controls MegaTronMT Specifications

General

Brand	Advantage Controls
Model	MegaTronMT
Category	Controller
Language	English