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Measuring System LT4
The only SIL3-certified flue gas measuring system on the market
Your advantages at a glance:
- In combination with KS1D probes for measuring oxygen (O2) and detecting oxidizable exhaust gas components (COe)
- SIL-certified safe digital outputs
- SIL-certified safe analog outputs
- Optional function and drift test using a function test unit (FTU)
- Type approved in accordance with DIN EN 12067-2 and DIN EN 16340
- Robust, compact housing
* SIL in accordance with DIN EN 61508, Parts 1–3, and DIN EN 61511
Application:
For connection with the following probes:
KS1D ECO, KS1D-BF
The LAMTEC Lambda Transmitter LT4, in combination with LAMTEC KS1D probes, is a microprocessor-based measuring device for universal use. Compared to the LT3 and LT2, it has an additional monitoring processor, secure digital and analog outputs, and control of the probe function test unit.
The safe digital outputs can be used to monitor processes up to a SIL3 classification, while the safe analog outputs can output measured values up to SIL 2. The optional FTU function test unit contributes to the optimization of the SIL classification, and in this combination, the LT4 is also type approved in accordance with DIN EN 12067-2. The following overview shows the SIL classifications depending on the fuel and the LT4 configuration.
Digital Outputs:
SIL 3* Oil/gas – without FTU
SIL 2* All fuels – without FTU
SIL 3* All fuels – with FTU
Analog outputs based on measured values:
SIL 2* Oil/gas – without FTU
SIL 1* All fuels – without FTU
SIL 2* All fuels – with FTU
Product standard DIN EN 16340/12067-2 with FTU
* SIL in accordance with DIN EN 61508, Parts 1–3, and DIN EN 61511
The LT4 can therefore also be used as a standalone device in combination with burner controls with the appropriate certification for control purposes. This transmitter was developed in conjunction with the KS1D probes. This transmitter is used with KS1D probes specifically for the simultaneous measurement of O2 concentration and detection of oxidizing gas components H2 and COe (CO/H2) in exhaust gases from gas and oil (EL) combustion plants in the over-stoichiometric range (λ > 1). The measured value COe represents a sum signal of all oxidizing exhaust gas components.
| Technical Data |
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| Approvals |
EC Type Examination Certificate
CE Declaration of Conformity
SIL
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| Probes for LT4 | |||
| Sensor type | KS1D ECO | KS1D-BF | |
| View |  |  |  |
| Gas extraction | GED ECO | GED BASE | GED FLEX |
| Range of measuring | O2: 0 ... 21 % (LS2 and KS1D) | ||
| Measurement accuracy | O2: ±5 % of measurement value – not more than ±0,3 Vol. % | ||
| Purging | No | No | X |
| Automatic calibration | No | X | X |
| Max. temperatur | ≤ 300 °C | ≤ 550 °C | ≤ 1400 °C |
| Dust level | ≤ 100 mg/Nm3 | ≤ 200 mg/Nm3 | ≤ 1000 mg/Nm3 |
| Fuel | Oil (light fuel oil), natural gas | Oil (light fuel oil), natural gas | Oil (light fuel oil), natural gas, |
| Protection type | IP42 | IP65 | |
| Fuel gas velocity | 1<x<6 m/s to | 1<x<10 m/s to | <30 m/s |
| Response time O2 t60/t90 | 3 s/9 s | ||
| Response time COe t60/t90 | 9 s/13 s | ||
Interfaces:
- Module for analog current outputs (0/4 ... 20 mA) / voltage outputs (0/2 ... 10 V)
- Module for PROFIBUS DP
- Module for efficiency calculation including measurement of exhaust gas temperatures
Function Test Unit FTU (optional)
- Extension to include a function and drift test
- To comply with 2016/426 (Gas Appliances Regulation GAR)
- To comply with DIN EN 12067-2
You can find additional accessories in the
product catalogue.
Accessories available via our sales representatives
Sonde KS1D ECO
Further downloads can be found in the support section .
All products in this category
Measuring System LT1
The Lambda Transmitter LT1, in combination with the Lambda Probe LS1, is a universally applicable modular measuring system for direct and highly accurate measurement of O2 concentration up to 21 % in gases in the superstoichiometric range.
Measuring System LT2
The Lambda Transmitter LT2 is the all-round solution for simultaneous CO/H2 and O2 measurement in conjunction with the KS1D combination probe or for pure O2 measurement with the LS2 probe. From automatic adjustment to purging in dusty applications, this system can be used for almost all needs and marginal conditions.
Measuring System LT3
The LT3 Lambda Transmitter is the cost-effective solution for simultaneous CO/H2 and O2 measurement in conjunction with the KS1D combination probe or for pure O2 measurement with the LS2 probe.
Measuring System LT3-Ex
The Lambda Transmitter LT3-Ex is based on the LT3. Due to the pressure resistant enclosure (Ex d) it can be used in conjunction with the KS1D-Ex or LS2-Ex probe in hazardous areas zone 1 and zone 2 for simultaneous measurement of O2 and CO/H2 or for selective O₂ measurement with the LS2 lambda probe in potentially explosive areas of Zone 1 and Zone 2.
Measuring System LT3-F
The LT3-F Lambda Transmitter, in combination with the Combination Probe KS1D and the LAMTEC burner management system, is a fail-safe system (SIL 2) for COe combustion optimization. The fault safety is only valid for the complete system.
Measuring System LT4
The Lambda Transmitter LT4, in conjunction with the KS1D combination probe, is a fail-safe system (SIL 3) for simultaneous monitoring of O2 concentration and oxidizing gas components (CO/H2). It is the only SIL 3-certified flame monitoring system on the market.
Measuring System NT1
The NOx Transmitter NT1, in combination with the Combination Probe KS2DNOx, is the innovative package solution for simultaneous NOx and O2 measurement in exhaust gases of combustion plants. The measurement is performed directly in the exhaust gas (in situ), therefore no measurement gas preparation is necessary. Up to 4 probes can be connected.
