Rosemount 3900, 3900VP Product Data Sheet
Product Data Sheet
00813-0100-3900, Rev AB
October 2019
Rosemount™ 3900/3900VP
General Purpose pH/ORP Sensors
High performance for your process pH/ORP needs
The Rosemount 3900 and 3900VP pH/ORP combination sensors are used for reliable pH or oxidation/ reduction potential measurements of aqueous solutions in pipelines, open tanks, or ponds. Its robust sensor design allows the Rosemount 3900 and 3900VP sensors to be used in a wide range of applications.
Rosemount 3900/3900VP |
October 2019 |
Overview
A robust sensor design
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Extended sensor life and protection against poisoning ions |
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using a double junction reference. |
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Enhanced performance and increased life with cracking |
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resistant glass. |
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Maximum chemical resistance provided by a rugged |
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polyphenylene sulfide body. |
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Operates in sub-zero temperatures down to 14 °F (-10 °C). |
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Built-ins solution ground for advanced diagnostics. |
Versatile installation options
■The sensor body features a one-piece construction with both front facing and rear facing process threads.
■¾-in. and 1-in. MNPT process connections to meet a variety of application installation requirements.
■Variopol (VP8) cable connection option, for quick cable-to-sensor release, eliminates cable twisting.
SMART preamplifier
■Automatic recognition of pH sensors by Rosemount transmitters: 1066, 1057, 1056, and 56.
■pH calibration data is stored, which allows sensors to be calibrated in advance for "plug and play" installations in the field.
Ordering information
The Rosemount 3900 and 3900VP General Purpose pH/ORP sensors feature a chemically resistant Ryton® plastic body, along with a built-in solution ground for advanced diagnostics and a Pt-100 resistance temperature device (RTD) for temperature compensation. These sensors are available with either an integral cable connection (Rosemount 3900) or Variopol (VP8) connector (Rosemount 3900VP). Variopol cables are sold separately (see Accessories).
Contents |
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Overview........................................................................................................................................................................................... |
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Ordering information........................................................................................................................................................................ |
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Specifications.................................................................................................................................................................................... |
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Dimensional and installation drawings.............................................................................................................................................. |
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Accessories...................................................................................................................................................................................... |
16 |
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Emerson.com/Rosemount |
October 2019 |
Rosemount 3900/3900VP |
Table 1: Rosemount 3900 Ordering Information |
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Option |
Description |
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3900 |
General Purpose pH/ORP Sensor |
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Preamplifier option |
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01 |
SMART preamplifier, 32-ft. (10 m) cable (standard preamplifier if used with ORP) |
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02 |
No preamplifier, 15-ft. (5 m) cable |
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04 |
SMART preamplifier, 50-ft. (15 m) cable (standard preamplifier if used with ORP) |
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05 |
SMART preamplifier, 66-ft. (20 m) cable (standard preamplifier if used with ORP) |
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06 |
SMART preamplifier, 100-ft. (30 m) cable (standard preamplifier if used with ORP) |
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07 |
No preamplifier, 4-ft. (1 m) cable |
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08 |
No preamplifier, 10-ft. (3 m) cable |
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Measuring code |
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10 |
General purpose low resistivity (GPLR) pH glass (0-14 pH) |
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12 |
Platinum ORP |
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Calibration certificates - optional level |
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CC |
Certificate of Calibration (no test data given) |
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LC |
Loop Calibration Certificate (sensor and transmitter calibrated together, with test |
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data) |
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EC |
Electronic Calibration Certificate (sensor calibrated against factory instrument, with |
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test data) |
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Note
The Rosemount 3900 pH/ORP sensor is housed in a Ryton plastic body with built-in solution ground for advanced diagnostics. Pt-100 is offered for a temperature compensator. The sensor is available with an integral cable. You can mount the sensor using a process connector, both ordered separately. You can also order junction box kits with preamplifiers separately if the transmitter does not have an integral preamplifier with 15 ft. (5 m) of the sensor.
Table 2: Rosemount 3900VP Ordering Information
Option |
Description |
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3900VP |
General Purpose pH/ORP Sensor with Variopol connector |
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Preamplifier option |
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01 |
SMART preamplifier (standard preamplifier if used with ORP) |
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02 |
No preamplifier |
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Measuring code |
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10 |
General purposel low resistivity (GPLR) pH glass (0-14 pH) |
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12 |
Platinum ORP |
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Calibration certificates - optional level |
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CC |
Certificate of Calibration (no test data given) |
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LC |
Loop Calibration Certificate (sensor and transmitter calibrated together, with test |
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data) |
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Rosemount 3900/3900VP |
3 |
Rosemount 3900/3900VP |
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October 2019 |
Table 2: Rosemount 3900VP Ordering Information (continued) |
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Option |
Description |
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EC |
Electronic Calibration Certificate (sensor calibrated against factory instrument, with |
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test data) |
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Specifications |
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Table 3: Percent Linearity over pH Range |
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pH range |
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Linearity |
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0-7 |
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97% |
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1-7 |
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98% |
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4-7 |
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98% |
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7-10 |
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99% |
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7-12 |
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97% |
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7-13 |
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96% |
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7-14 |
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95% |
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Table 4: Rosemount 3900/3900VP pH/ORP Sensor Specifications |
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Measurement range |
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pH |
0 to 14 |
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ORP |
-1500 to +1500 mV |
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Operating temperature |
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14 to 212 °F (-10 to 100 °C), automatic temperature compensation from 14 to 212 °F (-10 to 100 °C) |
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Maximum pressure |
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100 psig (790 kPa [abs]) at 212 °F (100 °C) |
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CRN rating: 60 psig up to 212 °F (100 °C) |
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Materials of construction |
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Sensor body |
Ryton®: polyphenylene sulfide (PPS) |
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O-ring |
EPDM |
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pH electrode |
Glass |
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ORP electrode |
Glass, platinum |
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Solution ground |
Stainless steel |
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Reference junction |
PFTE (Teflon®) |
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Conductivity |
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Responds to changes in pH at a minimum conductivity of 0.1 µS/cm when used with the low flow panel. The sample flow rate |
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must be controlled to 2 gallons per hour (7.61 liters per hour). |
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Process connection |
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Front facing |
¾-in. and 1-in. MNPT |
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4 |
Emerson.com/Rosemount |
October 2019 |
Rosemount 3900/3900VP |
Table 4: Rosemount 3900/3900VP pH/ORP Sensor Specifications (continued) |
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Rear facing |
1-in. MNPT |
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Temperature compensation |
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Pt-100 |
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Cable |
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3900 |
Various cable lengths (see Ordering information) with integral preamplifier; 15-ft. |
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(4.6 m) and less without preamplifier |
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3900VP |
Use 24281-XX, 2.5-ft. (0.8 m) to 100 ft. (30.5 m). See Accessories. |
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Weight/shipping weight |
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1 lb./2 lb. (0.45 kg/0.9 kg) |
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Dimensional and installation drawings
Figure 1: Proper Sensor Installation Orientation
Install sensor within 80 degrees of vertical.
Rosemount 3900/3900VP |
5 |
Rosemount 3900/3900VP |
October 2019 |
Figure 2: Rosemount 3900 with Integral Cable Connection
A.1-in. MNPT
B.Wrench flats, 1.30 in. across
C.1-in. MNPT
D.¾-in. MNPT
6 |
Emerson.com/Rosemount |
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