Month: November 2025

Distinct features

Power factor correction for both balanced and

unbalanced loads

In modern day installations, unbalanced loads are increasingly

common, especially in residential or commercial buildings.

RVT addresses your power factor issues from both single

phase loads (L-L or L-N) and three phase balanced/

unbalanced loads. RVT is capable of compensation to

each phase individually or compensation to three phases

globally. Another distinct feature of RVT is individual phase

measurements and energy calculations.

Complete three phase measurements

− Active power (kW) – 3ph/1ph

− Apparent power (kVA) -3ph/1ph

− Reactive power (kvar) -3ph/1ph

− Reactive power (kvar) to reach the target cos ϕ -3ph/1ph

− Voltage (V) -3ph/1ph

− Current (A) -3ph/1ph

− Cos ϕ-3ph/1ph

− Total Harmonic Distortion on Voltage/Current : THD V/I (%)

− Voltage/Current Harmonics : H2 up to H49 (%-spectrum)

Advanced diagnostics, in accordance with NAMUR NE107.

classify alarms and warnings as ‘Maintenance Required’,

‘Check Function’, ‘Failure’ and ‘Out-of-Specification’. Cell

performance is monitored by the transmitter; indicators such as

cell impedance, rate-of-response to test gasses and changes in

calibration offset/factor are recorded and analyzed. The current

cell ‘quality’ is displayed by the transmitter as a visual indication

of the measurement confidence; providing the operator all the

information required to keep the monitor operating at peak

performance.

The Performance Log holds up to 100 time-stamped events.

When the log is full, the oldest data is overwritten by new

entries. The log contains details of measurements and

coefficients for all calibrations and accuracy checks.

2 Relay outputs and a traditional analog output are fitted as

standard, with the option of adding a second analog output or 2

digital inputs/outputs (I/O).

The Endura AZ20 transmitter is equipped with HART

communication as standard, supported by a full Device Type

Manager (DTM) to enable remote access to the analyzer through

a user-friendly graphical interface. The DTM provides full access

to the transmitter setup, logged data and diagnostics

information as well as live data.

The IrDA standard infrared communication port can also be

used with the DTM to upload and download device

configurations. In addition, it enables data logged values and

diagnostics to be viewed on a hyperterminal interface or a PC.

The device’s firmware can also be upgraded using this port.

Flow Rate Control using Flow Restrictors

The flow rates of test gas and reference air are important to the

accurate operation of Zirconia-based oxygen analyzers and,

traditionally, control has been achieved using ancillary

flowmeters and flow control valves.

The Endura AZ20 offers a new approach with the inclusion of

optional flow restrictors. These are fitted within the probe to

control the flow rate of the reference air and test gasses,

removing the need for additional flowmeters fitted with flow control valves.

This innovative approach enables the gasses to be controlled by

pressure only. 1 Bar (15 psi) is applied directly to the probe’s gas

ports and the correct flow rate is then set by the flow restrictors.

Unique Integrated Automatic Calibration

The all new Endura AZ20 automatic calibration system

eliminates the need for the expensive ancillary equipment

required for automatic calibration on traditional flue gas oxygen

analyzer systems. ABB’s fully integrated, automatic calibration

feature controls the test gas sequence and detects test gas

availability, eliminating incorrect calibrations due to loss of test gas.

Advanced Design

Designed and manufactured to exacting standards, the Endura AZ20 ensures long periods

of trouble-free operation in even the most arduous of applications.

The operating process temperature of up to 800 °C (1472 °F) extends system suitability

into previously impossible applications and enables optimum probe location within the process.

The modular design, with reduced component count, improves the robustness and 

reliability of the system and simplifies routine maintenance and servicing.

Complete traceability ensures only the highest quality materials are used in the analyzer’s

construction and rigorous manufacturing, inspection and testing procedures

(to international standard ISO 9001) result in a monitor of superior quality with prolonged probe life.

Easy Cell Release

The Endura AZ20 probe has retained the easy-access cell arrangement of the previous generation ZFG2 probes.

 Cell replacement can be performed on-site using basic hand tools;

even after long periods of high temperature operation where screw threads have ‘seized’ and can no longer be released.

Kits containing all the parts needed to complete maintenance are available

from ABB to ensure a technician can perform services quickly, efficiently and at minimum cost.

Easy Cell Release

The Endura AZ20 probe has retained the easy-access cell arrangement of the previous generation ZFG2

probes.

 Cell replacement can be performed on-site using basic hand tools;

even after long periods of high temperature operation where screw threads have ‘seized’ and can no

longer be released.

Kits containing all the parts needed to complete maintenance are available

from ABB to ensure a technician can perform services quickly, efficiently and at minimum cost.

Proven Cell Design

ABB’s metallurgically bonded, multi-layer electrode technology increases

the cell’s resistance to sulphurous and reducing atmospheres and high temperature operation.

This extends the life-cycle of the cell in the most arduous applications such as sulphur recovery processes,

crematoria and industrial/clinical waste incineration.

Introduction

The Endura AZ20 is the latest in a long line of high-quality, combustion gas analyzers from ABB.

The sensor, based on a zirconium oxide cell, is mounted at the tip of the probe that is inserted in the flue

duct.

The resulting direct, in situ measurement provides accurate and rapid oxygen reading for combustion

control optimization and emissions monitoring.

Probe Lengths up to 4.0 m (13.1 ft.)

A wide range of probe insertion lengths from 0.5 to 4.0 m (1.7 to 13.1 ft.) enable installation

to the optimum measuring point for accurate oxygen measurement within the duct; even in the largest

flue gas ducts and stacks.

A comprehensive range of mounting flanges provide simple installation

when plant-wide standard flanges are required or when replacing existing probes.

The transmitter can be probe- or remote-mounted at distances of up to 100 m (328 ft.),

thus providing versatile system options for all applications.

The probe-mounted transmitter option provides the lowest cost of installation.

However, the remote-mounted transmitter provides flexibility when the operationally ideal probe location

does not provide easy access for the user.

Explosion-proof motors

ABB’s high voltage explosion-proof motors are designed to withstand the pressure

caused by an internal explosion without causing any damage.

Our explosion-proof motors are the safe choice for applications in potentially explosive atmospheres

where the most important specifications of the oil and gas industry are required.

Power range: up to 1.6 mw (7.5 MV)

Voltage range: up to 11 kV

Shaft height: IEC 355-500 (500-900)

Number of poles: 2-18

Cooling: IC411. IC416 (IC511. IC516)

Protection: IP55. up to IP66

Operation: DOL, VSD

Operating environment: Explosion-proof, explosion-proof for added safety

Core Applications.

Pumps, fans, blowers, compressors, centrifuges in hazardous areas for most industry applications.

ABB’s high voltage rib-cooled design motors set the benchmark for the industry,

delivering more watts per kilogram than has previously been achieved with rib-cooled motors,

which also allows for simple configurability and built-in maintainability.

Standards: IEC/NEMA

Power range: up to 2240 kW / 3000 HP

Voltage range: up to 11.5 kV

Shaft height: IEC 315-560/NEMA 5000-5800

Number of poles: 2-12

Cooling: IC411.IC416 / TEAC, TEFC

Protection: IP55. up to IP66

Operation: DOL, VSD

Operating environment: Safe area, Hazardous area

Core applications.

Pumps, fans, blowers, compressors, hoists, conveyors, extruders, mills, cutting, saws

Multiple sample filters and back-purging options

-Optional dual filtration system

-Fully programmable blowback

Close Coupled Sampling System

The sensor assembly is mounted on the process wall and the probe and filter assembly extends into the

process gas stream.

A pneumatic injector is used to draw a sample from the process stream and feed it to the sensor head.

Oxygen analysis is performed by an industry standard zirconia cell.

Carefully metered dilution air is added and then calibrated for COe before the high sensitivity

catalytic sensor is used to measure unburned combustibles.

The dilution air ensures a sufficient supply of oxygen to allow the COe sensor to function properly under

abnormal process conditions where extremely low combustion oxygen levels may occur.

The tightly coupled extraction system enables tight temperature and pressure control of the sensor and

sample gas.

This provides a stable background for target gas measurements, which improves the accuracy of the

measurements.

Flame arrestors are installed in the sampling path to prevent flashbacks during startup when the

combustible content of the process gas exceeds the Lower Explosive Limit (LEL), thus ensuring safe

operation.

Flashback is prevented if the combustible content of the process gas exceeds the Lower Explosive Limit

(LEL) during startup, shutdown, or process disturbances.

The sampling channel is kept hot to prevent acid gas condensation and corrosion.