Water Quality

Measured Data

pH value ( concentration of hydrogen ion ) ORP ( redox potential)

Operating time in hours

Sending Options

no sending, cyclical sending when change occurs

Parameter

Cyclical sending with variable periods, sending when change occurs with hysteresis

Object type ph

1-Byte unsigned, 2-Byte float, 4-Byte float

Object type ORP

2-Byte signed, 2-Byte float, 4-Byte float

Object type Laufzeit

2-Byte unsigned

Object type Wassertemperatur

1-Byte signed, 2 Byte signed, 2 Byte-float, 4 Byte-float

Object type Kontakteingänge

1-Bit bool

Controller Modi

Steady PI controller Switched PI controller (PWM) Two-Position controller

Two-Position controller Pulsed

Parameter Steady PI controller

Setpoint, reset time, proportional factor, controller mode

Parameter Switched PI controller (PWM)

Setpoint, reset time, proportional factor, controller, cycle duration, threshold pitch

Parameter Two-Position controller

Setpoint, differential gap, controller mode

Parameter Two-Position controller Pulsed

Setpoint, differential gap, controller mode , cycle duration, duty cycle

Lock Function

All controller parameterizable as enable or lock

Controller Variables Output

depends on Controller Modi 1-Byte unsigned, 1-Bit Switch

Setpoint value send cyclical

None or 10-250 seconds, parameterizable

Limits: pH, ORP, operating time, water temperature

Lower limit, Upper limit

Auxiliary value

Setpoint, Upper limit or Lower limit

Bus power failure

Saving changed auxiliary quantities, parameterizable

Calibration

pH 7 - Zero

pH X - Transconductance ORP X - Transconductance Operating Time - Reset

Ambient Temperature Electronic Measuring Equipment Casing

Operation: -20 .. +55 °C Storage: -20 .. +85°C

Ambient Humidity

0 .. 95% rH not condensating

Accuracy pH

± 0,1

Resolution pH

± 0,01

Accuracy OPR

± 10mV

Resolution OPR

± 1mV

Accuracy water temperature

± 1°C

Resolution water temperature

± 0,01°C

Operating Voltage

KNX bus voltage 21 .. 32VDC

Power Consumption

approx. 240mW ( at 24VDC )

Auxiliary Supply

not required

Bus Coupler

integrated

Start-up with ETS

ARC_S8 Product: S8-WAQ

Curcuit Points

KNX 2-pole clamps ( red / black )

Protection Class

IP54/65

Assembly Type Transducer

Assembly with 2 screws finery

Casing Transducer

ABS plastic grey

Casing Dimensions

( 115 x 65 x 55 ) mm ( L x W x H )

Article number without sonde

30801000

Article number with sonde

30801001

Electrode Set

Single-rod measuring cell, gel-filled, low-maintenance for standard applications

pH: HI2114P-2 ORP: HI3214P-2

Electrode thread

3/4“ x 16UNF

Electrode cable

2m with BNC plug

Article number

91110020

Temperature probe

PT1000 not included, please order separately, Price catalogue chapter Z