Rosemount 3300HT / 3300HTVP pH Sensor

Fits high-temperature and harsh liquid-analysis loops that need a PERpH-X pH/ORP sensor (3300HT integral or 3300HTVP Variopol) with media temperature up to 155 °C class and process pressure up to 400 psig class, option-dependent.

Key advantages

High-temp PERpH-X — Media temperature up to 155 °C (311 °F) class, option-dependent.
400 psig class — Process pressure up to 400 psig class, model/option dependent.
Integral or Variopol — 3300HT integral cable or 3300HTVP VP8 quick-disconnect.
Selectable electrolytes — Reference options for HT / biofilm / poison / oil / scale duty.

Typical applications

High-temperature pH/ORP loops in chemical and process liquids.
Harsh media where PERpH-X reference electrolytes are specified.
Installs that need Variopol VP8 quick-disconnect sensor changeout.

Selection guide

Family — High-performance PERpH-X pH/ORP (3300HT integral; 3300HTVP Variopol).
Accuracy — Transmitter-dependent; selectable reference electrolytes for HT/biofilm/poison/oil/scale duty.
Output — Sensor mV to Rosemount liquid analysis transmitters; VP8 option on 3300HTVP.
Process connection — Insertion/submersion styles per 00813-0100-3300 ordering information.
Wetted materials — Ryton® / titanium options; glass pH/ORP electrodes; PERpH-X reference system.
Media temperature — Up to 155 °C (311 °F) class (model/option dependent).
Process pressure — Up to 400 psig class (model/option dependent).
Communication — VP8 interconnect (3300HTVP); SMART options per PDS.
Approvals — Calibration/conformance certificate options per PDS.

Common mistakes

Ordering 3300HT integral when the install needs Variopol VP8 quick-disconnect — choose 3300HTVP.
Assuming transmitter accuracy equals the sensor — accuracy is transmitter-dependent; lock transmitter model on the RFQ.
Ignoring that 155 °C / 400 psig class are model/option dependent — confirm on the chosen order code.
Leaving electrolyte / media chemistry blank when biofilm, poison, oil, or scale duty drives the reference choice.

When to RFQ / what to tell us

3300HT vs 3300HTVP, media chemistry, and required temperature/pressure class.
Insertion/submersion style, wetted materials, and matching Rosemount transmitter model.
Certificate options, quantity, ship-to country.

Request a Quote · Get selection help

Specs

Spec	Value
SKU	36545
Brand	Rosemount
Model	3300HT / 3300HTVP
Product type	sensor
Measuring range	High-performance PERpH-X pH/ORP (3300HT integral; 3300HTVP Variopol)
Accuracy	Transmitter-dependent; selectable reference electrolytes for HT/biofilm/poison/oil/scale duty
Output signal	Sensor mV to Rosemount liquid analysis transmitters; VP8 option on 3300HTVP
Supply voltage	Via compatible Rosemount transmitter
Process connection	Insertion/submersion styles per 00813-0100-3300 ordering information
Wetted materials	Ryton® / titanium options; glass pH/ORP electrodes; PERpH-X reference system
Housing material	Per sensor body codes in PDS
IP rating	Process sensor rating per PDS installation section
Media temperature	Up to 155 °C (311 °F) class (model/option dependent)
Ambient temperature	Per PDS tables
Process pressure	Up to 400 psig class (model/option dependent)
Communication	VP8 interconnect (3300HTVP); SMART options per PDS
Display	N/A (sensor)
Approvals	Calibration/conformance certificate options per PDS
Notes	Specs from Emerson PDS 00813-0100-3300 Rev AD (Oct 2022) covering 3300HT/3300HTVP family.

Documents

FAQ

Q: 3300HT vs 3300HTVP? A: 3300HT is integral cable; 3300HTVP adds Variopol VP8 quick-disconnect. Both are PERpH-X high-performance pH/ORP sensors.

Q: What T/P class? A: Media temperature up to 155 °C (311 °F) class and process pressure up to 400 psig class — model/option dependent; confirm on PDS charts.

Q: What should I send for a quote? A: HT vs HTVP, connection, materials, transmitter, T/P, duty, quantity. Compatible with systems using Rosemount 3300HT — we do not claim authorized-dealer status.