398 family sensors – ECOCHIMPRIBOR

Description
Table

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:

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: