TESTO 327 - Technical data

Specifications 5
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Warning The testo 327 must not be used in areas at risk of explosion,
for long-term measurements or as a safety (alarm) device!
The testo 327 with the Bluetooth option may only be operated in countries in
which it is type approved (see Technical Data).
Technical data
Display variables [units] Measuring range/resolution Accuracy/response time
1)
Oxygen, via internal electro-chemical sensor (not 327 CO):
O
2
content [%],
O
2
air supply [%],
Reference value O
2
ref [%] 0...21% / 0.1% ±0.2% / t90 <40s
Carbon monoxide, 327-1:
CO content [ppm, mg/m³] 0...4,000ppm / 1ppm ±20ppm (0...400ppm), ±5% of reading (401...1,000ppm),
(H
2
share <10%) ±10% of reading (1,001...4,000ppm) / t90 <60s
Carbon monoxide, via internal electro-chemical sensor (only 327-2 with option COH2):
CO content [ppm, mg/m³] 0...8,000ppm / 1ppm ±20ppm (0...200ppm), ±5% v. Mw. (201...2,000ppm),
±10% of reading (2001...8,000ppm) / t90 <40s
Ambient Carbon monoxide, via internal electro-chemical sensor:
Ambient CO content
amCO [ppm] 0...2,000ppm / 1ppm ±10ppm (0...100ppm), ±10% of reading (>100ppm) /
t90 <40s
Temperature, via type K thermocouple of flue gas probe (NiCr-Ni):
Flue gas temperature FT,
Flue gas dew point ATP,
Ambient air AT -40...+600°C / 0.1°C, ±0.5°C (-40...100°C), ±0.5% of reading (>100°C),
-40...1,112°F / 0.1°F ±0.9°F (-40...212°F), ±0.5% of reading (>212°F) /
t98 <50s (TE 0.5mm); <100s (TE 1mm)
Temperature, via differential temperature set 0554 1208:
Flue gas socket T1 [°C, °F],
Sensor socket T2 [°C, °F] -40...+600°C / 0.1°C, ±0.5°C (-40...100°C), ±0.5% of reading (>100°C),
-40...1,112°F / 0.1°F ±0.9°F (-40...212°F), ±0.5% of reading (>212°F) /
t98 <50s (TE 0.5mm); <100s (TE 1mm)
Pressure, via internal differential pressure sensor:
Flue draught Drght [mbar,
hPa, inW, in Hg] -40...40hPa / 0.01hPa ±0.02hPa (-0.50...0.60hPa), ±0.03hPa (0.61...3hPa),
±1.5% of reading (>3hPa) / -
Flue draught Drght, with option
of precision draught [Pa] -100...100Pa / 0.1Pa ±3Pa / -
Pressure and tightness test via internal differential pressure sensor, with differential pressure set 0554 1203:
Differential pressure
Δp [hPa]
-200...200hPa / 0.1hPa ±0.5hPa (0.0...50.0hPa)
(with option precision ±1% of reading (50.1...100.0hPa)
difference pressure: 0.01hPa) ±1.5% of reading (100.1...200.0hPa)
Efficiency, calculated:
Efficiency η
2
[%],
Efficiency η+
3)
[%] 0...120% / 0.1% ±0.2% / -