Emerson Solu Comp Xmt-P-FF/FI Manual de usuario descargar pdf (Pagina 8)

FUNCTIONAL SPECIFICATIONS

Automatic Temperature Compensation:

3-wire Pt 100 or Pt 1000 RTD

Conductivity: 0 to 200°C (32 to 392°F)

Resistivity: 0 to 100°C (32 to 212°F)

Low Conductivity: 0 to 100°C (32 to 212°F)

Diagnostics: The internal diagnostics can detect:

Calibration Error ROM Failure

Temperature Slope Error Zero Error

High Temperature Warning CPU Failure

Low Temperature Warning Input Warning

Once one of the above is diagnosed, the Xmt-C will display

a message describing the problem.

Digital Communications:

HART: PV, SV, and TV assignable to measurement (con-

ductivity, resistivity, or concentration), temperature, and

raw conductivity. Raw conductivity is measured conduc-

tivity before temperature correction.

Fieldbus: Three AI blocks assignable to measurement (con-

ductivity, resistivity, or concentration), temperature, and

raw conductivity. Raw conductivity is measured conductivi-

ty before temperature correction. Execution time 75 msec.

One PID block; execution time 150 msec. Device type:

4087. Device revision: 1. Certified to ITK 4.6.

TRANSMITTER SPECIFICATIONS @ 25°C

Measured Range: 0-20,000 μS/cm

Accuracy: ± 0.7% of reading and ± 0.002 µS/cm

Repeatability: ± 0.25% of reading

Temperature Accuracy: ± 0.2°C between 0 and 50°C; ±

0.5°C above 50°C (excludes inaccuracies in sensor)

Temperature Compensation: Slope 0-5%/°C, ultra-pure

water, cation conductivity, or raw (uncompensated) con-

ductivity.

Compatible RTD: 100Ω or 1000Ω with automatic recognition

Ambient Temperature Coefficient:

± 0.05% of reading/°C

Maximum Cable Length: 200 ft (61 m)

LOOP SPECIFICATIONS

Accuracy: under controlled laboratory conditions at 25°C

(77°F) with perfectly calibrated ENDURANCE sensor of

appropriate cell constant:

Calibration: Calibrate against previously calibrated stan-

dard sensor and analyzer, or calibrate against solution of

known conductivity.

SENSOR SELECTION GUIDELINES

Note: The conductivity values shown in the above chart are for

UNCOMPENSATED (or RAW) conductivity at 25°C.

Maximum range values will vary due to temperature compen-

sation selection, process temperature, and other process

conditions.

RECOMMENDED SENSORS:

Model 140 Retractable Conductivity

Model 141 Insertion High Conductivity

Model 142 Insertion Low Conductivity

Model 150 Insertion/Submersion Conductivity

Model 400/VP Screw-In Low Conductivity

Model 401 Screw-In High Conductivity

Model 402/VP Retractable Conductivity

Model 403/VP Sanitary Conductivity

Model 404 Low Flow Conductivity

HAZARDOUS LOCATION APPROVALS

Intrinsic Safety(with appropriate safety barrier):

Class I, II, III, Div. 1

Groups A-G

T4 Tamb = 50°C

Class I, II, III, Div. 1

Groups A-G

T4 Tamb = 50°C

ATEX 1180

II 1 G

Baseefa04ATEX0214X

EEx ia IIC T4

Tamb = 0°C to 50°C

Non-Incendive:

Class I, Div. 2, Groups A-D

Dust Ignition Proof

Class II & III, Div. 1, Groups E-G

NEMA 4/4X Enclosure

Class I, Div. 2, Groups A-D

Dust Ignition Proof

Class II & III, Div. 1, Groups E-G

NEMA 4/4X Enclosure

T4 Tamb = 50°C

Page 8

MODEL Xmt-C CONTACTING CONDUCTIVITY TRANSMITTER

FEATURES

The Model Xmt-C measures conductivity, resistivity, total dissolved solids, or % concentration. It can also be configured, using

the "Custom Curve" feature, to measure ppm, %, or a no unit variable according to a programmable conductivity vs. variable

curve. The transmitter automatically recognizes the type of RTD (Pt100 or Pt1000) being used. Measurements are automati-

cally corrected for the resistance of the sensor cable to improve accuracy of high conductivity readings. The Xmt-C provides

several temperature compensation algorithms: linear slope, ultra-pure water (neutral salt), or cation conductivity. Alternatively,

temperature compensation feature can be turned off to provide display of raw conductivity.

Cell Constant Range Loop accuracy

0.01/cm up to 50 μS/cm ±0.7% of reading

±0.002 μS/cm

0.1/cm 0.4 to 50 μS/cm ±0.7% of reading

50 to 200 μS/cm ±2% of reading

1.0/cm 4 to 5000 μS/cm ±0.7% of reading

5000 to 20,000 μS/cm ±2% of reading

Cell Constant Suggested Conductivity Range

0.01/cm up to 50 μS/cm

0.1/cm 0.4 to 500 μS/cm

1.0/cm 4 to 20,000 μS/cm

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

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