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3900-02-10

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In general-purpose aqueous pH measurement, the Emerson Rosemount 3900-02-10 sensor uses a double-junction reference that protects against poisoning ions.
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Technical specifications for 3900-02-10

  • Manufacturer:
    Emerson
  • Part Number:
    3900-02-10
  • Product Family:
    Rosemount
  • Product Type:
    General-Purpose pH Sensor
  • Stock:
    1
  • Measurement:
    pH
  • Measuring electrode:
    GPLR glass
  • Body material:
    PPS (Ryton)
  • Reference system:
    Double-junction Ag/AgCl
  • Reference junction:
    Porous PTFE
  • Solution ground:
    Stainless steel
  • Temperature element:
    Pt100
  • Preamplifier:
    None
  • Integral cable:
    15 ft (4.57 m)
  • Measurement range:
    0 to 14 pH
  • Process temperature:
    -10 to 100 °C
  • Maximum pressure:
    100 psig (6.9 barg) at 100 °C
  • Process connections:
    Front 3/4 in. and 1 in. MNPT; rear 1 in. MNPT
  • Weight:
    0.45 kg
  • Tariff Code:
    Please confirm the destination before shipping
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Sensor Construction Electrical Interface Mounting Control Product Applications

Features:

  • Double-junction reference: the internal design protects against poisoning ions
  • Integrated diagnostics support: solution ground and Pt100 connect process and temperature information to the analyzer
  • Flexible mounting: front and rear MNPT connections cover insertion, flow-through, and immersion layouts
3900-02-10 packages the GPLR pH electrode, reference system, temperature element, and solution ground in one PPS-bodied sensor.

The 15 ft cable reaches a remote analyzer without an on-sensor preamplifier, making cable condition and routing part of the measurement chain.

Aqueous lines, open tanks, and ponds can use different process connections while retaining the same exact pH configuration.

Apter Power can review 3900-02-10 process connection, cable route, analyzer input, condition evidence, and quotation requirements before supply.
Emerson 3900-02-10 General-Purpose pH Sensor Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Measuring glass: GPLR glass is the code-10 pH selection.
  • Body: PPS provides the documented chemically resistant housing.
  • Reference: a double-junction Ag/AgCl system limits exposure to poisoning ions.
  • Junction: porous PTFE forms the process interface for the reference electrolyte.
  • Direct electrode lead: code 02 contains no integral preamplifier.
  • Cable reach: the integral lead is 15 ft (4.57 m).
  • Temperature signal: Pt100 supports analyzer compensation.
  • Solution ground: the stainless-steel element supports reference and diagnostic functions in compatible instruments.
  • Orientation: keep the sensor within 80 degrees of vertical.
  • Front connections: 3/4 in. and 1 in. MNPT threads serve insertion or flow-through hardware.
  • Rear connection: 1 in. MNPT supports submersible conduit arrangements.
  • Process envelope: apply the -10 to 100 °C and 100 psig-at-100 °C boundaries together.
  • Pipeline pH measurement: front-facing threads support an insertion or tee installation.
  • Open-tank monitoring: the rear connection accepts a customer-supplied submersion assembly.
  • Pond measurement: the robust PPS body serves immersed aqueous monitoring points.
  • Low-flow sampling: the documented accessory cell supports controlled 2 gal/h sample flow.
Description
3900-02-10 is the pH configuration of Emerson’s Rosemount 3900 general-purpose sensor. It combines GPLR glass with a chemically resistant PPS body for aqueous measurement in pipelines, open tanks, and ponds.

Inside 3900-02-10, a double-junction Ag/AgCl reference protects the measuring system from poisoning ions. A porous PTFE junction, stainless-steel solution ground, and Pt100 temperature element provide the electrical and compensation interfaces used by the analyzer.

Code 02 equips 3900-02-10 with a 15 ft cable and no integral preamplifier. Front-facing 3/4 in. and 1 in. MNPT threads plus a rear 1 in. MNPT connection support flow-through, insertion, or submersible installation while retaining the published orientation and environmental limits.
Alternative Names
39000210 Rosemount 3900 code 02 10 3900 GPLR pH sensor 15 ft cable Ryton pH sensor without preamplifier
Technical notes
3900-02-10 must be installed within 80 degrees of vertical so the internal reference remains correctly wetted. Because code 02 provides a 15 ft cable without a preamplifier, treat the lead as a low-level measurement circuit; in hazardous locations, clean the PPS body only with a damp cloth to control electrostatic risk.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Why must 3900-02-10 stay near a vertical orientation?
The official installation guidance limits the sensor to within 80 degrees of vertical so its internal reference remains correctly positioned and wetted during operation.
How should the 15 ft cable of 3900-02-10 be routed?
Keep the direct, non-preamplified signal cable away from power conductors and moisture paths, preserve shielding, and avoid splices unless the Rosemount wiring arrangement explicitly provides a junction point.
Which mounting connections are available on 3900-02-10?
The front offers 3/4 in. and 1 in. MNPT connections, while the rear provides 1 in. MNPT. Select the thread that matches the documented insertion, flow-through, or submersion hardware.
What does the solution ground provide on 3900-02-10?
The stainless-steel solution ground gives a compatible analyzer an electrical process reference and can support diagnostics; it does not replace correct bonding, shielding, or instrument configuration.
How should 3900-02-10 be cleaned in a hazardous location?
Use only a damp cloth on the PPS body to reduce electrostatic risk. Isolate the loop as required by site procedures before touching wiring or removing the sensor.
What should be checked when 3900-02-10 responds slowly?
Review glass cleanliness, PTFE junction fouling, process flow, temperature compensation, cable condition, analyzer input stability, reference health, and whether the installation point represents the actual process.