398 family sensors

398 family sensors

The main feature of 398 family sensors is higher chemical resistance than 396 model allowing to resist majority of aggressive media, including chlorine dioxide in cellulose bleach towers, and resist majority of organic solvents due to Tefzel® material used as a solenoid bridge diaphragm.

Sensors have titanium casings and various O-rings to ensure maximum chemical protection (senors has better chemical resistance than 396 models). Temperature compensation is ensured by 3K Balco or PT-100; Redox sensors with -50 option have no temperature element. Standard sensor has 4.5 m cable. 398(VP) sensor can be installed using threaded connector ordered separately. 398R/398RVP model sensor can be installed using ball valve mounting hardware ordered separately.

Connection box with preamplifiers can be ordered separately.

Characteristics

398/398R model 

Measured value and range

pH: 0-14

ORP: -1500 – +100 mV

pH AccuGlass electrode options

GPHT hemispheric electrode

GPHT flat electrode

Wetted materials

Titanium, Tefzel, glass, platinum (Redox only) and Viton or Kalrez (optional).

Process connection

1”NPT – for 398 model

for 398R/398RVP:1-1/2 in. or 1-1/4 in.

With ball valve (sold separately) or

1 in. without ball valve

Temperature range

0-100˚С

Pressure range

100 – 1825 kPa

Maximum pressure during sensor removal/introduction 

Code 21: 542 kPa (64 psig)

Code 25: 343 kPa (35 psig)

Minimum conductivity

Nominal 75 µS/cm

100 µS/cm

In-built cable

Coaxial cable

4.6 m with BNC connector

VP8 cable

For 398RVP/398VP model

Ordered separately

Weight/packed weight

398/398VP model sensor:  0.45 kg/0.9 kg

398R/398RVP model sensor:

The main feature of 398 family sensors is higher chemical resistance than 396 model allowing to resist majority of aggressive media, including chlorine dioxide in cellulose bleach towers, and resist majority of organic solvents due to Tefzel® material used as a solenoid bridge diaphragm.

Sensors have titanium casings and various O-rings to ensure maximum chemical protection (senors has better chemical resistance than 396 models). Temperature compensation is ensured by 3K Balco or PT-100; Redox sensors with -50 option have no temperature element. Standard sensor has 4.5 m cable. 398(VP) sensor can be installed using threaded connector ordered separately. 398R/398RVP model sensor can be installed using ball valve mounting hardware ordered separately.

Connection box with preamplifiers can be ordered separately.

Characteristics

398/398R model 

Measured value and range

pH: 0-14

ORP: -1500 – +100 mV

pH AccuGlass electrode options

GPHT hemispheric electrode

GPHT flat electrode

Wetted materials

Titanium, Tefzel, glass, platinum (Redox only) and Viton or Kalrez (optional).

Process connection

1”NPT – for 398 model

for 398R/398RVP:1-1/2 in. or 1-1/4 in.

With ball valve (sold separately) or

1 in. without ball valve

Temperature range

0-100˚С

Pressure range

100 – 1825 kPa

Maximum pressure during sensor removal/introduction 

Code 21: 542 kPa (64 psig)

Code 25: 343 kPa (35 psig)

Minimum conductivity

Nominal 75 µS/cm

100 µS/cm

In-built cable

Coaxial cable

4.6 m with BNC connector

VP8 cable

For 398RVP/398VP model

Ordered separately

Weight/packed weight

398/398VP model sensor:  0.45 kg/0.9 kg

398R/398RVP model sensor: