High temperature (HT) pH sensors PERpH-X manufactured by Rosemount Analytical have several structural innovations that increase lifespan of pH sensor in complex high-temperature processes. ACCUGLASS™ pH flask means that HT sensors have higher resistance to crackling and response time close to the theoretical one even at ultimate pH values. GPHT glass is resistant to destruction glass matrix in high-temperature processes that ensures exceptional thermal stability of pH glass membrane. Slotted tip around glass flask protects the flask from direct impact of hazardous factors and can be rotated up to 90 degrees for self-cleaning. HT PERpH-X sensors have improved dual coupled standard perfectly applicable in severe conditions. External standard on a gel basis preserves viscosity ensuring resistance to thinning temperature and pressure effects. Outflow of standard into the operating flow is controlled using porous teflon connection that can be replaced in case of pollution or clogging. Specially designed connection is chemically stable and has a large surface area to maintain stable reference signal when used in polluted or oil-contaminated conditions.
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Technological information and specifications
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Characteristics
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3300HT & 3300HTV
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3400HT & 3400HTVP
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3500HT & 3500HTVP
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Measurement range
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from 0 to 14 pH
ORP from -1500 to +1500 mV
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Linearity percent in pH range
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pH range
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HT series
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0 – 2 pH
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94%
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2 – 12 pH
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99%
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12 – 13 pH
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97%
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13 – 14 pH
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92%
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Wetted materials
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Titanium, Ryton™, Teflon®, glass and EPDM,
Gasket rings – optional Viton® or Kalrez®
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Process connection
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1” connector
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1” connector
1 1/4” or 1 1/2” ball valve
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1” MNPT thread on the front and rear parts of the sensor
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Operating Temperature
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Without preamplifier
from 5°C to 155°C
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from 5° to 120°C
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With SMART preamplifier
(3300HTVP and 3400HTVP models option -70)
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Up to 85°C
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Up to 110°C
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Storage temperature
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From -10°C to 70°C
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From -10°C to 70°C
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From -10°C to 50°C
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Maximum process pressure
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1825 kPa (absolute) at (100°C)
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1825 kPa (absolute) at (100°C)
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790 kPa (absolute)
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Maximum process pressure in case of extractable (cut-in) connection.
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–
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524 kPa (absolute) Code 21
343 kPa (absolute) Code 25
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790 kPa (absolute) at 120°C
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Conductivity
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Over 100 µS/cm
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Reference electrode
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Dual reference electrode with exchangeable gel electrolyte and Teflon® connection.
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In-built cable
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Standard one piece 15 in.
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PN 24281-00 cable for 3300VP/3400VP models
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Option-01: 8.3 m ready-made cable
Option-01: 5 m ready-made cable
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Optional:
9.5” cable
ONLY for 3400HT
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Weight / shipping weight
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0.5 kg/ 0.9 kg
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Code 21
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0.9 kg/1.4 kg
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0.5 kg/ 0.1 kg
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Code 25
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1.4 kg/1.8 kg
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