Rosemount 2081 pH - Recommended Sensors; Ordering Information

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MODEL 2081 pH SECTION 9.0
DESCRIPTION AND SPECIFICATIONS
9.5 RECOMMENDED pH SENSORS:
Model 300 Retractable
Model 320B Flow-Through
Model 320HP High Purity Flow-Through
Model 328A Steam Sterilizable
Model 370, 371, & 371VP Eurosenz
Model 381 Insertion/Submersion/Flow-Through
Model 385 Retractable
Model 389 Disposable
Models TUpH 396/396P Disposable, 396R Retractable
Model 397 Quik-Loc
Models TUpH 398 Insertion/Submersion, 398R Retractable
Model 399 Disposable
Model GP1 Disposable
PREAMP LOCATION: A preamplifier is used to con-
vert the high impedance pH glass electrode signal to
a low impedance signal. The pH signal may then be
reliably transmitted from the sensor to the transmitter
using standard shielded 4-wire instrument cable.The
preamplifier may be located in one of three areas: in
the pH sensor for best performance, in a remote
junction box when process temperatures exceed
80°C (176°F) in submersion applications, or in the
transmitter when the distance between the pH sen-
sor and the transmitter is 15 ft (4.6 m) or less. The
2081 pH transmitter contains a jumper selectable
preamp that allows operation in any of these 3
modes.
9.6 ORDERING INFORMATION
Model 2081 pH Two-Wire Transmitter is housed in a NEMA 4X (IP65) weatherproof, corrosion-resistant enclo-
sure suitable for pipe mounting. Standard features include LCD digital display, automatic temperature compensa-
tion, and isolated 4-20 mA output with HART digital communications capability. External DC loop power is required
from a distributed control system or Model 515 isolated power supply. Remote alarms with independently
adjustable setpoints are available with the Model 230A Alarm Module.
Code Options (Order PN’s as separate line items)
07 Order as PN 2002577 2 in. pipe/wall mounting bracket (1lb/.5kg)
11 Order as PN 9240864 Stainless steel Tag (specify marking)
Code Agency Approvals
67 FM approved, Intrinsically Safe (when used with approved sensor and safety barrier), and
explosion-proof
69 CSA approved, Intrinsically Safe (when used with approved sensor and safety barrier), and
explosion-proof
73 CENELEC instrinsically Safe (Safety barrier required)
MODEL
2081 pH TWO-WIRE TRANSMITTER
Former Options
2081 pH 67 EXAMPLE