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- Installation & training on-site setup, gas connection and operator onboarding
- Method + calibration induction and resistance SOPs set up on your samples
C-H-S Analyzers, Analysis equipment, Elemental Analyzers
ELTRA ELEMENTRAC CS-d Dual-Furnace Carbon/Sulfur Analyzer – Induction + Resistance | ppm–100%
Dual-furnace analyzer that combines an induction furnace (above 2,000 °C) and a resistance furnace (to 1,550 °C) in one instrument — carbon and sulfur in both inorganic and organic samples, from ppm to 100 %, with up to four gold infrared cells.
- ✔ ELTRA Dual Furnace (EDF) · induction + resistance · organic & inorganic C/S
- ✔ ppm to 100 % · up to 4 independent IR cells · gold IR path
- ✔ Intelligent lance · low-blank port · 36/130 autoloader · TIC · halogen trap
- ✔ Lead time: configured to order — request current timeline
Price held 7 days after order.
Install + training included
Tailored service plan
Built for high-throughput QC labs
What your QC lab actually checks
Two furnaces cover every sample
ELTRA Dual Furnace (EDF) Technology combines an induction furnace above 2,000 °C for metals, cast iron and ceramics with a resistance furnace to 1,550 °C for coal, coke and soil — so one instrument covers carbon and sulfur in both inorganic and organic samples from ppm to 100 %. Intelligent lance management, a low-blank sample port and up to four gold infrared cells keep results reliable across the whole range.
An applications engineer on the line
IR-cell configuration, induction and resistance calibrations, autoloader and TIC/halogen options from engineers who run metal additive manufacturing in-house (AO Metal). Sub-4h reply, NDA standard.
About this product
The ELTRA ELEMENTRAC CS-d combines an induction furnace (above 2,000 °C) and a resistance furnace (up to 1,550 °C) in one instrument — ELTRA’s Dual Furnace (EDF) Technology. It determines carbon and sulfur in both inorganic samples (steel, cast iron, ceramics) and organic samples (coal, coke, soil) from the ppm range up to 100 %, using up to four independent infrared cells with gold IR paths. Intelligent lance management and a low-blank resistance sample port give complete combustion and reliable low-level results.
Why high-throughput labs choose the CS-d
One analyzer for organic and inorganic carbon and sulfur — from ppm to 100 %.
Two furnaces, one instrument
ELTRA Dual Furnace (EDF) Technology combines an induction furnace above 2,000 °C for metals and a resistance furnace to 1,550 °C for organics — full flexibility from a single analyzer.
Organic + inorganic, ppm to 100 %
The latest detector technology gives a wide carbon and sulfur range from ppm to 100 % in both furnaces, with up to four independent infrared cells and gold cuvettes as standard.
Intelligent lance + low-blank port
Intelligent lance and combustion management ensure complete combustion of powders without sample loss; a low-blank resistance sample port enables reliable analysis of low-carbon samples.
Autoloader, TIC & halogen trap
Options include a 36- or 130-position autoloader, an HTF-540 pre-heating furnace, a halogen trap for high halogen levels and a TIC module for total inorganic carbon.
How Additive Plus supports it
A configured, installed dual-furnace analyzer with methods dialed in on your samples.
Step 01
Configure to your samples
We spec the IR-cell configuration, autoloader, pre-heating furnace and TIC/halogen options to your organic and inorganic matrices before it ships.
Step 02
Install & train
Factory-trained engineers install the analyzer, connect oxygen, air and the PC/balance, and train your team on both furnace methods.
Step 03
Method & QC support
We help build the SOPs — induction and resistance calibrations, blank control and repeatable carbon/sulfur baselines.
What the CS-d measures
Full technical specifications are in the Specifications tab. Key measurement capability:
| Parameter | ELEMENTRAC CS-d |
|---|---|
| Measured elements | Carbon, sulfur (inorganic and organic samples) |
| Measuring range | ppm range to 100 % (both furnaces) |
| Principle | Dual furnace — induction > 2,000 °C + resistance to 1,550 °C — with solid-state IR |
| Detection | 1–4 infrared cells · gold IR path |
| Analysis time | Induction ~40–50 s · resistance ~60–120 s |
| Requirements | Oxygen 99.5 % · compressed air · PC, monitor, 0.0001 g balance |
Typical sample materials
Carbon and sulfur across metals, minerals and organic matrices.
Steel & cast iron
Induction furnace
Coal & coke
Resistance furnace
Titanium & refractory metals
Incoming inspection
Soil & plant material
TOC / TIC and agriculture
Cement & ceramics
Special configuration
Oil, rubber & ores
Wide-range QC
Not sure the CS-d is the right analyzer?
Compare with single-furnace ELEMENTRAC combustion analyzers.
Metals / induction onlyELEMENTRAC CS-iView analyzer →
Organics / resistance onlyELEMENTRAC CS-rView analyzer →
Adds hydrogenELEMENTRAC CHS-rView analyzer →
Organics / resistance onlyELEMENTRAC CS-rView analyzer →
Adds hydrogenELEMENTRAC CHS-rView analyzer →
Tell us whether you need to cover both organic and inorganic samples on one bench — our applications engineer will confirm whether the dual-furnace CS-d or a single-furnace analyzer fits, and the IR-cell configuration. Sub-4h reply, NDA standard.
Why source the CS-d through Additive Plus
- Authorized channel for ELTRA / Verder Scientific lab equipment — sales, installation, training and service in one place.
- Configured to your samples — IR cells, autoloader, pre-heating furnace and TIC/halogen options specified before shipping.
- Method development on your samples — induction and resistance calibrations, blank control and repeatable SOPs.
- <24h response from engineers who run metal additive manufacturing in-house (AO Metal). NDA standard.
| Brand | ELTRA |
| Model | ELEMENTRAC CS‑d |
| Measured elements | carbon, sulfur |
| Samples | inorganic, organic |
| Furnace alignment | horizontal (resistance furnace) and vertical (induction furnace) |
| Sample carrier | ceramic boats / crucibles |
| Field of application | agriculture, chemistry / plastics, coal / power plant, construction materials, engineering / electronics, environment / recycling, geology / mining, glass / ceramics, medicine / pharmaceuticals, steel / metallurgy |
| Furnace | induction furnace, above 2,000 °C resistance furnace (ceramic tube), adjustable up to 1,550 °C (steps of 1 °C) |
| Detection method | solid state infrared absorption |
| Number of IR cells | 1 - 4 |
| Material of IR path | gold |
| Typical analysis time | induction furnace 40 - 50 s resistance furnace 60 - 120 s |
| Chemicals required | magnesium perchlorate, platinized silica (alternatively copper oxide), sodium hydroxide |
| Gas required | compressed air (4 - 6 bar / 60 - 90 psi) oxygen 99.5 % pure (2 - 4 bar / 30 - 60 psi) |
| Power requirements induction furnace | 230 V, 50/60 Hz, 16 A fuse |
| Power requirements resistance furnace | 230 V, 50/60 Hz, 20 A fuse |
| Dimensions (W x H x D) | 890 x 840 x 790 mm / 35.04 x 33.07 x 31.1 in |
| Weight | ~ 200 kg |
| Required equipment | PC, monitor, balance (resolution 0.0001g) |
| Optional accessories | Autoloader for 36 crucibles, HTF-540 pre-heating furnace, autoloader for 130 crucibles, carrier gas purification, halogen trap |
Product videos
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· Lead time: configured to order — request current timelineFrom multi-matrix labs running the ELTRA ELEMENTRAC CS-d
Unedited feedback from materials-QC teams.
★★★★★
Steel on the induction furnace and coal on the resistance furnace, same instrument. It replaced two analyzers in our lab.
MF
Markus F. Lab Manager · Steel / metallurgy
★★★★★
The intelligent lance stopped powder splashing out of the crucible, so our low-density samples finally read true.
LS
Lucia S. QC Engineer · Foundry / non-ferrous
★★★★★
Wide range from ppm to percent covers our whole sample list. Autoloader keeps the queue moving all shift.
AR
Ahmed R. Materials Engineer · Environment / recycling
Common questions
Don't see yours? Email [email protected] — NDA standard, typical reply within 4 hours.
What makes the ELTRA ELEMENTRAC CS-d different?
The ELEMENTRAC CS-d is a dual-furnace carbon and sulfur analyzer: it combines an induction furnace (above 2,000 °C) and a resistance furnace (to 1,550 °C) in one instrument, using ELTRA's Dual Furnace (EDF) Technology. That lets one analyzer measure carbon and sulfur in both inorganic samples (steel, cast iron, ceramics) and organic samples (coal, coke, soil), which normally require two separate instruments.
How does the measurement work in each furnace?
In both furnaces, carbon and sulfur form CO₂ and SO₂ during combustion, which are measured in up to four element-selective infrared cells — usually two cells per gas for both low and high concentrations. The induction furnace melts metals with a high oxygen flow and uses a heated catalyst to fully oxidize CO to CO₂; the resistance furnace combusts organics at up to ~1,350 °C, where CO is usually not formed, so the catalyst can be switched off. The ELEMENTS software calculates the results.
What is the measuring range and IR configuration?
The latest detector technology gives a wide range from the ppm range to 100 % in both furnaces. Up to four independent infrared cells are used, and for optimum measurement of low and high concentrations two IR cells per element are recommended — a longer cuvette gives higher sensitivity for low levels such as 10 ppm. Gold cuvettes are installed as standard for reliability on halogen-containing samples, and a halogen trap is available for very high halogen levels.
How does the CS-d handle difficult powder samples?
The induction furnace runs above 2,000 °C with a high oxygen flow (about 180 L/hour) so solid samples are fully decomposed. Because powder can splash out of the crucible and read low, the CS-d uses intelligent lance and combustion management: oxygen is dosed via a lance or through the chamber to prevent blowing the sample, and the furnace power ramps up gradually for gentle, complete combustion. A low-blank resistance sample port supports reliable low-carbon analysis.
What options and automation are available?
The induction furnace can take an optional autoloader with 36 or 130 crucible positions. Further options include an HTF-540 pre-heating furnace, carrier-gas purification, a halogen trap and a TIC module that determines total inorganic carbon by acidification in soil and construction materials. A special configuration for cement analysis is also available. Additive Plus configures these to your application.
What does the CS-d need to run?
It needs oxygen at 99.5 % purity (2–4 bar) and compressed air (4–6 bar), an external PC and monitor, and a balance with 0.0001 g resolution. The induction furnace uses 230 V with a 16 A fuse and the resistance furnace 230 V with a 20 A fuse. It is a larger instrument — about 890 × 840 × 790 mm and ~200 kg — so plan bench space and power accordingly.
What is the lead time, and can Additive Plus set it up?
The ELEMENTRAC CS-d is configured to order; request a quote for the current lead time. Additive Plus is an authorized ELTRA / Verder Scientific channel and handles installation, gas and balance connection, calibration on both furnaces and operator training, then helps build your carbon/sulfur SOPs. You can also send a sample for a paid measurement first. Sub-4h reply, NDA standard.
Place your order, or talk to an engineer first
Order ELTRA ELEMENTRAC CS-d Dual-Furnace Carbon/Sulfur Analyzer – Induction + Resistance | ppm–100% direct, or talk to materials engineer