Rosemount Analytical 397 TUpH Operating Manual

Instruction Manual 397

LIQ_MAN_ABR_397 November 2013

TUpH pH Sensors

For additional information, please refer visit our website at www.rosemountanalytical.com.

Specifications

397 Performance and Physical
Specifications

pH Range: AccuGlass: 0–14 pH
Wetted Materials: glass, polypropylene, EP
Interconnecting Cable: 15 ft (4.6 m), for use with remote

preamplier

Temperature Rating: 0 to 100 °C (32 to 176 °F)
Pressure Range: 100–790 kPa abs (0–100 psig)
Minimum Conductivity: 75 μS/cm, nominal 100 μS/cm
Weight/Shipping Weight: 0.45 kg/0.9 kg (1 lb/2 lb)
Process Connections: NONE; must use Quik-Loc Kit which

includes a 1 in. MNPT Process Connection

Quick-Loc Kit Physical Specifications

Process Connections: 1-in. MNPT
Wetted Materials: 316 SST, EP, PEEK
Weight/Shipping Weight: 0.45 kg/0.9 kg (1 lb/2 lb)

Storage

1. It is recommended that electrodes be stored in their
original shipping containers until needed.

2. Do not store at temperatures below -5 °C (23 °F).

3. Electrodes should be stored with a protective cap
containing KCl solution.

4. For overnight storage, immerse the sensor in tap water
or 4 pH buffer solution.

5. A pH glass electrode has a limited shelf life of one year.

Electrode Preparation

1. Remove electrode from shipping container.

2. Remove the protective boot covering the electrode
bulb.

3. Rinse away salt lm with clean water, then shake the
electrode so that the internal solution lls the bulb, thus

removing any air trapped there.

CAUTION
Sensor/Process Application Compatibility

The wetted sensor materials may not be compatible with
process composition and operating conditions.
Application compatibility is entirely the responsibility of
the user.

WARNING

Before removing the sensor, be absolutely certain that the
process pressure is reduced to 0 psig and the process
temperature is lowered to a safe level!

ATEX DIRECTIVE

Special Conditions for safe use

1. All pH/ORP sensors have a plastic enclosure which must
only be cleaned with a damp cloth to avoid the danger
due to a build up of an electrostatic charge.

2. All pH/ORP sensor Models are intended to be in contact
with the process fluid and may not meet the 500V r.m.s.
a.c. test to earth. This must be taken into consideration
at installation

Note

Do not allow lubricant to coat electrode bulb or reference
junction. If it does, wipe it clean before installation.

Sensor Installation

For sensor dimensions, see Figure 1.

For recommended installation, see Figure 2

For wiring, see Figures 3 - 13.

397 Instruction Manual

November 2013 LIQ_MAN_ABR_397

Figure 1. Dimensional Drawings For the 397 in the Quik-Loc Unit

DWG. No. RE V.
40039702 C

Note

The EP gasket (see drawing #40039702) provided
with the coupler should be periodically inspected. If
gasket shows signs of corrosion, replacement will be
necessary to ensure a proper and secure seal between
the coupler and adapter.

Quik-Loc Kit

23757-00

23757-01 2.0 in. / 50 mm

6.15 in. / 156 mm

A

Sensor Length

1.4 in. / 35 mm

B

Insertion Depth

DWG. No. RE V.
40039704 B

DWG. No. RE V.
40039701 C

2

Instruction Manual 397

LIQ_MAN_ABR_397 November 2013

Quick-Loc Mounting

Wrap the pipe threads of the coupler with Teon tape

before placing it into the process pipe. The coupler can be
connected to any 1 in. process connection and must be
mounted within 80° of vertical, with the electrode facing
down. Once the coupler is in place, the adapter should be
positioned onto the back end of the sensor.

Remove the paralm wrapping from the two 0-rings on

the sensor, grease the o-rings with the lube provided,
and feed the sensor cable through the adapter. Once
the adapter is slipped over the sensor’s back end, the
retaining ring (which is included with every 397 sensor)
should be installed on the black, grooved, back end of the
sensor body. The retaining ring secures the sensor into the
adapter. The adapter/sensor assembly is now ready to be
inserted into the coupler. With both arms of the coupler in
the released position, insert the adapter/sensor assembly
into the coupler.

Note

The adapter can not be inserted completely or properly
unless both arms are in the fully released position (see Figure

1).

Once the adapter has been properly placed in the coupler, both
arms should be positioned in the locked position.

Note

The sensor may obstruct ow through smaller

pipes.

SAFETY WARNING

It is recommended that a thermometer, drain valve to
relieve pressure, and pressure gauge be inserted near the
Quik-Loc assembly (see Figure 2).

WARNING

Once the Quik-Loc unit is installed the operator should
wait for the process to cool to a safe temperature, use the
pressure drain valve to relieve all process pressure and
observe the pressure on the pressure gauge for proper
removal of the sensor without spray or bodily injury. The
Quik-Loc kit used with the 397 TUpH sensor is not rec­ommended for use with hazardous, corrosive, or strong
oxidizing chemicals due to a risk of spray or bodily injury.

SAFETY WARNING

It is the responsibility of each company using the Quik­Loc Kit/ 397 TUpH Sensor to train personnel of the injury
risks associated with using a quick-release coupler that is
placed in a hot or pressurized process.

Once the arms of the coupler have been locked in position, use
tamper-evident safety wire on the metal rings of the coupler
arms to prevent unauthorized and/or untrained personnel from
using the Quik-Loc unit.

The Quik-Loc unit should be used only within the pressure and
temperature limits stated for the 397 sensor.

Figure 2. Recommended Flow-Through and Insertion Installation for the 397

DWG. No. RE V.
40039703 B

3