Model

7721

Measurement range

0~20.00MΩ‧cm (0~200.0KΩ‧m)

(Automatic temperature compensation at 25℃)

Cell constant: 0.1cm^-1(10m^-1)

Sensor input

MAX 2 pieces

Water temperature

0~100℃

Temperature compensation

0~100℃

Reject ratio

Reject ratio= [1-R1/R2] X 100 [%]

R1 and R2 are resistivity, and R1 < R2

Accuracy

Repeatability±1.0% Full Scale

Alarm output

Two relay outputs (Low or High mode)

Contact capacity at resistance load

Less than AC125V 0.4A, or less than DC30V 2A

Analog output

4-20mA DC(resistance load less than 500Ω)

Two analog outputs (Ground is common connection)

One selected among the conductivity, temperature, and reject ratio.

Communication

One RS-485 port (2 wire type)

Termination resistor is not built in.

Operating condition

Ambient temperature  0~50℃

Ambient humidity     5~80%

(There should be no dew condensation.)

Power supply

AC TYPE: 85~264VAC  47~440Hz

DC TYPE: 18~36VDC

Power consumption

MAX 8.5W

Dimensions

W96xH96xD164 mm

Usable sensor

R3/4 type

*7701-S300

*7701-S310

*7701-S600

R1/2 type

*7701-S400

*7701-S500