인증된 전문가에게 직접 연결
인증된 전문가에게 직접 연결

Technical Data
| Temperature - NTC | |
|---|---|
Measuring range | -4° to 122 °F / -20 to +50 °C |
Accuracy | ±0.4 °F (14° to 122 °F) / ±0.2 °C (-10 to +50 °C) |
Resolution | 0.1 °F (-4° to 122 °F) / 0.1 °C (-20 to +50 °C) |
Ambient temperature probe
| Temperature - Type K TC | |
|---|---|
Measuring range | -328.0° to 2498.0 °F / -200 to +1370 °C |
Accuracy | ±0.7 °F (-148.0° to 392.0 °F) / ±0.4 °C (-100 to +200 °C) ±1.8 °F (-328.0° to -148.2 °F) / ±1 °C (-200 to -100.1 °C) ±1.8 °F (392.2° to 2498.0 °F) / ±1 °C (200.1 to +1370 °C) |
Resolution | ±0.1 °F (-328.0° to 2498.0 °F) / 0.1 °C (-200 to +1370 °C) |
| Temperature - TC Type S (Pt10Rh-Pt) | |
|---|---|
Measuring range | 32.0° to 3200.0 °F / 0 to +1760 °C |
Accuracy | ±1.8 °F (32.0° to 3200.0 °F) / ±1 °C (0 to +1760 °C) |
Resolution | ±0.1 °F (32.0° to 3200.0 °F) / 0.1 °C (0 to +1760 °C) |
| Differential Pressure | |
|---|---|
Measuring range | -16 to +16 InH₂O / -40 to +40 hPa -80 to +80 InH₂O / -200 to +200 hPa |
Accuracy | ±1.5 % of mv (-16 to -1 InH₂O) / ±1.5 % of mv (-40 to -3 hPa) ±1.5 % of mv (+1 to +16 InH₂O) / ±1.5 % of mv (+3 to +40 hPa) ±0.01 InH₂O (-1.20 to +1.20 InH₂O) / ±0.03 hPa (-2.99 to +2.99 hPa) ±1.5 % of mv (-80 to -20 InH₂O) / ±1.5 % of mv (-200 to -50 hPa) ±1.5 % of mv (+20 to +80 InH₂O) / ±1.5 % of mv (+50 to +200 hPa) ±0.2 InH₂O (-20.0 to +20.0 InH₂O) / ±0.5 hPa (-49.9 to +49.9 hPa) |
Resolution | 0.01 InH₂O (-16 to +16 InH₂O) / 0.01 hPa (-40 to +40 hPa) 0.1 InH₂O (-80 to +80 InH₂O) / 0.1 hPa (-200 to +200 hPa) |
| Absolute Pressure | |
|---|---|
Measuring range | 240 to +460 InH₂O / 600 to +1150 hPa |
Accuracy | ±4 InH₂O / ±10 hPa |
Resolution | 1 InH₂O / 1 hPa |
opt. when equipped with IR sensor
| Flue gas O₂ | |
|---|---|
Measuring range | 0 to +25 Vol.% |
Accuracy | ±0.8% of fsv (0 to +25 Vol.%) |
Resolution | 0.01 Vol.% (0 to +25 Vol.%) |
Reaction time t₉₀ | 20 sec (t95) |
| Flue gas CO | |
|---|---|
Measuring range | 0 to +10000 ppm |
Accuracy | ±5 % of mv (+200 to +2000 ppm) ±10 % of mv (+2001 to +10000 ppm) ±10 ppm (0 to +199 ppm) |
Resolution | 1 ppm (0 to +10000 ppm) |
Reaction time t₉₀ | 40 sec |
H₂ only as an indicator
| Flue gas COlow | |
|---|---|
Measuring range | 0 to 500 ppm |
Accuracy | ±5 % of mv (+40 to +500 ppm) ±2 ppm (0 to +39.9 ppm) |
Resolution | 0.1 ppm (0 to +500 ppm) |
Reaction time t₉₀ | 40 sec |
H₂ only as an indicator
| Flue Gas NO | |
|---|---|
Measuring range | 0 to +4000 ppm |
Accuracy | ±5 % of mv (+100 to +1999 ppm) ±10 % of mv (+2000 to +4000 ppm) ±5 ppm (0 to +99 ppm) |
Resolution | 1 ppm (0 to +4000 ppm) |
Reaction time t₉₀ | 30 sec |
| Flue gas NOlow | |
|---|---|
Measuring range | 0 to +300 ppm |
Accuracy | ±5 % of mv (+40 to +300 ppm) ±2 ppm (0 to +39.9 ppm) |
Resolution | ±0.1 ppm (0 to +300 ppm) |
Reaction time t₉₀ | 30 sec |
| Flue Gas NO₂ | |
|---|---|
Measuring range | 0 to +500 ppm |
Accuracy | ±5 % of mv (+100 to +500 ppm) ±5 ppm (0 to +9.99 ppm) |
Resolution | 0.1 ppm (0 to +500 ppm) |
Reaction time t₉₀ | 40 sec |
| Flue Gas SO₂ | |
|---|---|
Measuring range | 0 to +5000 ppm |
Accuracy | ±5 % of mv (+100 to +2000 ppm) ±10 % of mv (+2001 to +5000 ppm) ±5 ppm (0 to +99 ppm) |
Resolution | 1 ppm (0 to +5000 ppm) |
Reaction time t₉₀ | 30 sec |
| Efficiency (calculated) | |
|---|---|
Measuring range | 0 to +120 % |
Resolution | 0.1 % (0 to +120 %) |
| Flue Gas loss (calculated) | |
|---|---|
Measuring range | 0 to +99.9 % |
Resolution | 0.1 % (0 to +99.9 %) |
| Flue Gas dewpoint (calculated) | |
|---|---|
Measuring range | 0 to +99.9 °Ctd |
Resolution | 0.1 °Ctd (0 to +99.9 °Ctd) |
| Flue Gas CO₂ calculation (calculated from O₂) | |
|---|---|
Measuring range | 0 to CO₂ max |
Accuracy | calculated from O₂ ±0.2 Vol.% |
Resolution | 0.01 Vol.% |
| Flue gas H₂S | |
|---|---|
Measuring range | 0 to +300 ppm |
Accuracy | ±5 % of mv (+40 to +300 ppm) ±2 ppm (0 to +39.9 ppm) |
Resolution | 0.1 ppm (0 to +300 ppm) |
Reaction time t₉₀ | 35 sec |
| Flue Gas CO₂ - NDIR | |
|---|---|
Measuring range | 0 to +50 Vol.% |
Accuracy | ±0.3 Vol.% + 1 % of mv (0 to 25 Vol.%) ±0.5 Vol.% + 1.5 % of mv (25 to 50 Vol.%) |
Resolution | 0.01 Vol.% (0 to 25 Vol.%) 0.1 Vol.% (> 25 Vol.%) |
Reaction time t₉₀ | 10 sec |
| Velocity / Volume flow | |
|---|---|
Measuring range | 0 to +7874 fpm / 0 to +40 m/s |
Resolution | 19.7 fpm (0 to +7874 fpm) / 0.1 m/s (0 to +40 m/s) |
| Methane (CH₄) | |
|---|---|
Measuring range | 100 to 40000 ppm |
Accuracy | < 400 ppm (100 to 4000 ppm) < 10 % of mv (> 4000 ppm) |
Resolution | 10 ppm |
Min. O₂ requirement in flue gas | 2 % + (2 x mv methane) |
Reaction time t₉₀ | < 40 sec |
Response factor | 1 |
Lower explosion limit (LEL) must be adhered to.
The HC sensor is adjusted to methane ex-works. It can be adjusted to a different gas (propane or butane) by the user.
| Propane (C₃H₈) | |
|---|---|
Measuring range | 100 to 21000 ppm |
Accuracy | < 400 ppm (100 to 4000 ppm) < 10 % of mv (> 4000 ppm) |
Resolution | 10 ppm |
Min. O₂ requirement in flue gas | 2 % + (5 x mv propane) |
Reaction time t₉₀ | < 40 sec |
Response factor | 1.5 |
Lower explosion limit (LEL) must be adhered to.
The HC sensor is adjusted to methane ex-works. It can be adjusted to a different gas (propane or butane) by the user.
| Butane (C₄H₁₀) | |
|---|---|
Measuring range | 100 to 18000 ppm |
Accuracy | < 400 ppm (100 to 4000 ppm) < 10 % of mv (> 4000 ppm) |
Resolution | 10 ppm |
Min. O₂ requirement in flue gas | 2 % + (6.5 x mv butane) |
Reaction time t₉₀ | < 40 sec |
Response factor | 2 |
Lower explosion limit (LEL) must be adhered to.
The HC sensor is adjusted to methane ex-works. It can be adjusted to a different gas (propane or butane) by the user.
| General technical data | |
|---|---|
Dimensions | 13 x 5 x 17 in. / 330 x 128 x 438 mm |
Operating temperature | 23.0° to 113.0 °F / -5 to +45 °C |
Housing | ABS |
Protection class | IP40 |
Battery type | lithium batteries |
Battery life | 5 h |
Power supply | AC mains unit 100V to 240V (50 to 60 Hz) |
DC electric tension input | 11V to 40V |
Trigger input | Voltage 5 to 12 Volt (rising or trailing edge) pulse width > 1 sec load: 5 V/max, 5 mA, 12 V/max. 40 mA |
Max. humidity load | 70 °C dewpoint temperature |
Dewpoint calculation | 0 °Ctd; 99 °Ctd |
Max. dust load | 20 g/m³ dust in flue gas |
Max. neg. press./flue gas | -4.4 psi / -300 mbar |
Max. pos. press./flue gas | 0.7 psi / 50 mbar |
Hose length | 16.2 m (corresponds to 5 probe hose extensions) |
Pump flow | 1 l/min. with through-flow monitoring |
Maximum | 250,000 readings |
Storage temperature | -4.0° to 122.0 °F / -20 to +50 °C |
Weight | 169 oz. / 4800 g |
Whether you are testing for compliance or troubleshooting and tuning the testo 350 portable emission analyzer offers everything you need!
Test up to six gases simultaneously, or swap sensors out for additional parameters with field replaceable pre-calibrated digital sensors


A wide selection of probes for every application
The testo 350 represents the latest in portable emission analyzer technology for longer up-time in the field and lower cost of ownership.