Brand: SERVOMEX

Servomex ServoTough SpectraExact 2500 Gas Analyzer

Name: Servomex 2500 SpectraExact Gas Analyzer – Manual & Quote
Brand: SERVOMEX

Description

Overview

The Servomex SERVOTOUGH SpectraExact 2500 is a photometric process analyzer using non-dispersive infrared (NDIR) measurement in a single-beam, dual-wavelength design. It monitors up to three components in a gas sample stream and is used for continuous process measurement in petrochemical and chemical plants. The current version is designated SpectraExact 2500F.

The non-depleting NDIR sensor reduces maintenance, and the removable sample cell simplifies servicing. The measured gas, range and hazardous-area version depend on the ordered configuration, so these are confirmed against the process application before quotation.

Key Features

NDIR photometric measurement, single-beam dual-wavelength
Up to three components per sample stream
Non-depleting sensor and removable sample cell
Sample conditions 0–180 °C and 0–10 barg
Modbus TCP/IP communication
ATEX, UKEX and IECEx Zone 2 hazardous-area versions; SIL 2 hardware compliance per IEC 61508

Technical Specifications

Parameter	Value
Model	SERVOTOUGH SpectraExact 2500 (current version 2500F)
Measurement technology	NDIR, single-beam dual-wavelength photometric
Components	Up to 3 per sample stream
Measurable gases (configuration dependent)	NH3, CO, CO2, HCl, CH4, C1–C5 hydrocarbons, N2O, C3H8, THC, H2O, NO
Sample temperature	0 to 180 °C
Sample pressure	0 to 150 psig (0 to 10 barg)
Communication	Modbus TCP/IP
Hazardous area	ATEX Cat. 3 T4, UKEX Cat. 3 T4, IECEx Zone 2 T4; North American Class I Div. 2 Groups A–D T4
Functional safety	Hardware compliance to SIL 2, IEC 61508 (application dependent)
Electrical safety	IEC 61010-1
Weight	27 to 50 kg depending on configuration
Repeatability (2500 series data sheet)	Better than 0.5% of full scale
Response time (T90)	11 s minimum, electronics only, sampling excluded
Sample flow	0.2 to 5.0 l/min for gas applications
Analog outputs	2 isolated 0/4-20 mA as standard; 2 more optional
Relay outputs	3 volt-free single-pole relays as standard; 2 more optional
Supply voltage	115/230 V AC or 100/200 V AC, each ±15%, 50/60 Hz
Rated power	120 VA without heated cell; 300 VA with electrically heated cell
Warm-up time	Typically 2 to 10 hours, depending on application and environment

Applications

Ethylene production and ethylene dichloride (EDC) processes
Purified terephthalic acid (PTA) manufacturing
Carbon capture and storage streams
Flammable and toxic gas streams in petrochemical plants in Oman and the GCC

Servomex SpectraExact 2500 Selection Notes

Servomex configures each SpectraExact 2500 for a specific application, so the enquiry has to define the measurement before a model can be fixed. The manufacturer asks for the component or components to be measured (one to three per stream), the range and units, the other gases present and their concentrations, and the sample temperature, pressure, dew point and particulate loading at the analyzer inlet.

Wetted materials are chosen to suit the sample. A 316 stainless steel cell with Viton O-rings is the standard build. Hastelloy, Monel and titanium cells and PTFE or Chemraz seals are offered as options, and the window material depends on the spectroscopy of the measurement.

Other options to decide at order stage are sample pressure compensation for gas streams whose pressure varies, sample temperature compensation, a heated sample cell for measurement at constant temperature, and the extra output board. The supply voltage and frequency must also be stated.

Servomex SpectraExact 2500 Installation and Wiring Notes

The analyzer is wall mounted and connects to the sample line with 1/4 in OD tube. The sample must be clean, free of particulates and non-condensing at the operating temperature. The installation manual calls for at least 500 mm clearance to open the end covers, and the unit weighs from about 25 kg, so lifting and bracket strength need planning. The site altitude limit is 3,000 m. Relay contacts are rated 230 V AC / 0.5 A or 30 V DC / 0.5 A and are supplied set normally closed so that they fail safe on loss of power.

Why Seven Star LLC

Seven Star LLC supplies Servomex analyzers, parts and consumables to process plants and analyzer maintenance teams across Oman and the GCC. The analyzer configuration, measured components, ranges and hazardous-area certification are verified against the Servomex model data and the plant requirement before the order is confirmed.

Also available: Servomex Micro i.s. 5100 Portable Oxygen Analyzer

Servomex SpectraExact 2500 – Frequently Asked Questions

Which gases can the SpectraExact 2500 measure?

Depending on configuration: NH3, CO, CO2, HCl, CH4, C1-C5 hydrocarbons, N2O, C3H8, THC, H2O and NO, with up to three components per sample stream.

What measurement technology does it use?

NDIR single-beam dual-wavelength photometry with a non-depleting sensor.

What sample conditions can it handle?

Sample temperature 0 to 180 °C and pressure 0 to 10 barg.

Is it certified for hazardous areas?

Yes. ATEX, UKEX and IECEx Zone 2 T4 versions, and Class I Div. 2 for North America, with SIL 2 hardware compliance.

Where can I buy Servomex analyzers in Oman?

Seven Star LLC supplies Servomex analyzers, parts and consumables in Oman and the GCC. Request a quote below for price and lead time.

Request a Quote for Servomex ServoTough SpectraExact 2500 Gas Analyzer

Submit a formal inquiry with the analyzer model, the target gases and ranges, sample conditions, required hazardous-area certification and the serial number of any existing unit to be replaced. Inquiry Form

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About brand

Gas analysis is all Servomex does, and the paramagnetic oxygen cell is the technology it is best known for. The company dates from 1952 and is based in Crowborough, United Kingdom. Seven Star LLC lists Servomex process, combustion, emissions and portable gas analyzers, plus accessories, and sources them for refineries, petrochemical plants and industrial gas producers in Oman.

Servomex analyzer families listed

Servomex groups its analyzers under family names that indicate where they can be used. SERVOTOUGH covers analyzers built for hazardous areas and field mounting, SERVOPRO covers units for general purpose areas and analyzer houses, and SERVOFLEX is the portable line. On this page:

SERVOTOUGH OxyExact 2200: paramagnetic oxygen analyzer for process control and safety
SERVOTOUGH SpectraExact 2500: photometric analyzer for process gas components
SERVOTOUGH Laser 3 Plus: compact tunable diode laser analyzer for combustion
SERVOPRO 4900 Multigas: multi-component analyzer for emissions monitoring
SERVOPRO NanoTrace DF-550E: ultra-trace oxygen analyzer for high purity gases
SERVOFLEX Micro i.s. 5100: intrinsically safe portable oxygen analyzer

A flow alarm relay box for the 2700 flue gas analyzer is also listed.

Where Servomex gas analyzers are used

Typical duties are oxygen measurement for inerting and blanketing, vapor recovery and flare header safety, combustion control on fired heaters and reformers, purity control in air separation and electronic gases, and continuous emissions monitoring. In the GCC the main users are refining, petrochemicals, fertilizer, LNG and industrial gas plants.

Ordering Servomex analyzers and spares: what we need

A Servomex gas analyzer is built to an order code that fixes the measured gas, range, sample wetted materials, outputs and hazardous area approval. For replacements and spare parts, send the model, the serial number and the order code from the data plate. For a new Servomex oxygen analyzer or multigas unit, send the full stream composition, the component and range to be measured, sample pressure and temperature, the area classification, power supply and communication needs. We check the configuration against Servomex documentation before quoting.

Browse SERVOMEX products by category: Gas Analyzer Systems, Gas Analyzer Accessories, Portable Test & Measurement.

Frequently Asked Questions

What does the Servomex 2500 measure?

The Servomex 2500 is a process gas analyzer used for measurement of gases such as carbon dioxide, applying non-dispersive infrared technology.

What does SpectraExact mean?

SpectraExact is the Servomex analyzer design used in the ServoTough 2500 family, providing the selectivity and stability needed for process measurement.

Is the 2500 still supported?

The 2500 has been succeeded by newer Servomex platforms, but the installed base remains large and spare parts and service support keep existing instruments in service.

What does the analyzer need for operation?

The analyzer is connected to a representative sample conditioning system and is calibrated with certified calibration gas to keep the measurement within accuracy.

Can Seven Star supply spare parts?

Yes. Seven Star LLC assists operators in identifying the correct analyzer configuration and the matching spare parts for their 2500 installation.

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