Manufactured in the UK, we present the improved version of Lambapower's LSM11 replacement. This sensor is updated from Phase I to Phase II. Features improved sensor performance, and rewritten datasheet (version 2.x) with revised technical content, in response to customer feedback.

• Lambdapower Branded and Serial Numbered for ISO9001 compliance
• Manufactured in the UK
• Each item is individually tested - this ensures consistently high quality
• "Gold" graded sensors are available for laboratory uses (better than 15ppm accuracy)
• Naturally smooth progressive output - no annoying ADC quantisation steps or heater element switching noise
• As quick as 200mS response time (Test conditions: ambient 15 minutes warmup time, then reference gas -3% O2 concentration)
• Lifespan up to 8 times better than spurious sensors
• Correct heater rating is recognised immediately as LSM11 by the controller
• Professional Use Only - not for retail or DIY fitment

New Product Updates from Phase I to Phase II:

1. Improved compatibility with original Bosch part
2. More stable output in free air and during use
3. Improved hysteresis characteristics (better return-to-zero performance)
4. Two-part "Power Timer" connector is now the standard part
5. Thicker cables to reduce voltage losses
6. Larger vents improve resistance to fly ash
7. Improved manufacturing regime and tightened tolerances

Please note these parts are generally manufactured specially for each order. Some parts are usually available ex-stock for small orders.

Amongst others, this part fits these boilers using LSM11 four wire sensors:

• Froling
• Vigas
• Kriger (requires Instatherm® Interface)
• Woodtek (requires Instatherm® Interface)
• Hoval (requires Instatherm® Interface)

The LSM11B is unsuitable to replace 4-wire NGK OZA685-WW1 (HS Kabeltechnik 118.02-7100).

Important: The LSM11B is for professional use only, it is not suitable for DIY or amateur fitment, it requires specialist knowledge and training, coupled with familiarity of biomass boiler installations. No helpline is available for DIY fitment, and installation advice beyond the following datasheets will not be provided.

Lambdapower LSM11B industrial lambda sensor replacement for Bosch LSM11 0258104002

Download instructions for this product (English/EN) V2.2

Lambdapower LSM11B substituição do sensor lambda industrial para Bosch LSM11 0258104002

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Remplacement de la sonde lambda industrielle Lambdapower LSM11B pour Bosch LSM11 0258104002

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Lambdapower LSM11B Industrie Lambdasonde Ersatz für Bosch LSM11 0258104002

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Lambdapower LSM11B reemplazo de sensor lambda industrial para Bosch LSM11 0258104002

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Sostituzione sonda lambda industriale Lambdapower LSM11B per Bosch LSM11 0258104002

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Lambdapower LSM11B industrijski lambda senzor zamenjava za Bosch LSM11 0258104002

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Lambdapower LSM11B pramoninio lambda jutiklio pakeitimas Bosch LSM11 0258104002

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Înlocuire senzor lambda industrial Lambdapower LSM11B pentru Bosch LSM11 0258104002

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Wymiana przemysłowej sondy lambda Lambdapower LSM11B dla Bosch LSM11 0258104002

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Lambdapower LSM11B tööstusliku lambda anduri vahetus Bosch LSM11 0258104002 jaoks

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LSM11B-TC industrial oxygen sensor, Two-part connector, 2.5m cable, professional use only	£187.20 All Inclusive

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LSM11B-TYP40 industrial oxygen sensor, 4-way Single-part connector, 1m cable, professional use only	£187.20 All Inclusive
2023-11-11 Deprecated, please specify LSM11B-TC; special order only please contact us

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LSM11B-CABLE Type 40 Tyco Superseal extension cable for screw terminal header, 1.5m cable	£9.99 All Inclusive

LSM11B typical output graphs

Example remote telemetry, 0.9MW pellet burner fitted with LSM11B sensor, Flue Oxygen Content vs Time. Boiler self-cleaning cycle every couple of hours.

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A selection of randomly chosen sensors showing comparison between original LSM11 and new improved LSM11B. Adjusting the static set-point will move the graphs along the Y-axis. Shows mV output vs Oxygen content using a fan stirred heated mixture of plain air and inert reference gas in varying proportions.

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Example (worst-case) deviation of LSM11B from original LSM11 output under identical conditions. This is NOT a measure of absolute accuracy, it is a measure of difference of outputs. Both the LSM11 and LSM11B will have their own deviations from the ideal curve depending on the particular sensor under test. This can be dialled out using static offset adjustment.

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Example output from our own design LSM11B linearising interface to demonstrate that we can achieve five wire wideband comparable performance using a four wire sensor.

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LSM11B dimensional drawing (PDF)

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LSM11B Technical information (supplemental)

Typical Low Concentration PPM voltage output

PPM	mV		PPM	mV
1000	85.5		900	87.8
800	90.2		700	92.8
600	95.8		500	99.7
400	104.2		300	109.9
200	118.0		150	123.8
100	132.6		75	138.4
50	146.5		25	161.4
15	173.2		0	238.0

• Example typical LSM11B output for very low (ppm regime) O2 Concentration
• This test uses "Gold" Graded Sensor with free-air offset at -15mV
• Gasflow 0.5ms^-1
• Ambient temperature 16°C
• 1 PPM = 0.0001%

Maximum Temperature Rating

Parameter	Continuous	Peak
Maximum Gas Temperature	900°C	1100°C
Maximum Sensor Body Temperature	400°C	570°C
Biomass Boiler typical tip temp	260°C
Biomass Boiler typical body temp	140°C

• Temperature rating table for guidance only
• Continuous operation at maximum rating may reduce sensor life
• Operation at very high temperatures may cause output curve to shift
• In general: High gasflow tends to pull curve down
• High temperature tends to push curve upwards

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