GE Dresser Electronic Instruments IMCW2 Specification Sheet

GE Oil & Gas

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Dresser* Micro Corrector - IMC/W2

Integral Volume Correction Differential Pressure (DP) Monitoring

Versions: ptz-dp + LOG, T-dp + LOG, ptz + LOG, P + LOG, and T + LOG

GE Oil & Gas offers an integrated solution,
the Dresser Differential Pressure (DP) Micro Corrector,
which monitors meter health by continuous
measurement of the differential pressure
drop across the meter. The Dresser Micro
Corrector DP is capable of learning the
differential pressure curve for an individual
meter. During the learning period, DP is
monitored using the values present in the
Differential Test Acceptance Calculator (DTAC).

The Dresser Micro Corrector DP retains the last
valid average differential pressure measurement on
the LCD of the corrector along with the date when
this occurred. It also displays the average line pressure,
average line temperature and meter flow rate for that
same date. The differential pressure test information
required to be in compliance with state Public Utility
Commission (PUC) requirements is available with the
push of a button.

This offers operating efficiencies as the number of
return trips to the meter set is reduced, and reduces
the need for venting gas during periods of low
consumption. Differential pressure test results are
also logged in the data logs.

Developed from the proven IMC/W platform, the
Dresser Micro Corrector provides volume correction
through a simple-to-use interface. Features such as
improved low flow accuracy, enhanced data logging
capability, and reduced accuracy test times combine
to offer a complete solution to major customers.

The Dresser Micro Corrector, model IMC/W2,
an integral corrector rated for Division 1 hazardous
locations by the Canadian Standards Association (CSA)
and ATEX.

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Dresser Meter with IMC/W2,
Model ptz-dp + LOG

Features

■

Monitors meter health

■

Reduces unnecessary scheduled maintenance

■

Aids in regulatory compliance of DP testing,
where applicable

■

Last valid DP measurement displayed on
LCD and live data screen

■

Real-time differential pressure measurement

■

Compatible with Dresser Series A (LMMA),
Series B, and Romet meters

■

DP measurement is independent of volume correction

■

Remote monitoring capability with Dresser Micro
Modems - GSM/GPRS modems

■

dp + LOG units feature faults for high DP and meter
lock-up

Dresser GSM/GPRS Micro Modem

Live data screen displays current DP read, as well as last
valid DP read, pressure, temperature and fl ow rate with
date of occurrence.

Features

■

Rotating index offers ease of meter reading, especially
in non-typical installations

■

Uncorrected instantaneous flow rate displayed on
LCD can help meter differential testing in the field

Maximum uncorrected peak fl ow also
displayed on LCD

■

The SmartProve* Interface reduces meter and
corrector test times by as much as 90%, and allows
the meter and corrector to be tested as a complete
measurement system.

■

User selectable trim table improves rotary meter
accuracy at flow rates less than 10% of meter Qmax

■

Micro Generator* adds years to main battery life,
extending the interval between battery changes

■

User terminal software allows for configuration,
calibration and data log downloads

■

1 to 3 data logs provide for years of historical
information and are configurable in increments from
1 minute to 1 month. Data logs include the option to log
live battery voltage

■

Audit log maintains a record of configuration and
calibration changes

■

Available with your choice of sealed alkaline or
lithium battery pack

Learning methods are customer selectable
in the user terminal software.

■

Alarms notify the user of over-range conditions for
pressure, temperature, and flow rate

■

On units with DP transducer installed, alarms are present
for higher than normal differential pressure

■

Alarm & fault activity is displayed in the data log and
audit log reports, and the live data screen

■

E2PROM provides non-volatile storage of recorded
data and corrector configuration regardless of
battery condition

■

Uncorrected volume under fault register in E2PROM
replicates a backup mechanical index

■

MS Excel® formatted reports allow for manipulation and
sharing of information

Micro Generator

0.0

102

101

100

.99

ACCURACY - %

.98

.97

Trim Table

.5 1.0

ACCURACY CURVE

1.5

2.0 2.5 3.0

RATE-MCFH at INLET CONDITIONS

3.5

4.5

5.0

5.5

5.0

Dresser SmartProve Interface