TESTO 327 User manual

Instruction manual en
testo 327
Flue gas analyser, country-specific version GB

Contents2
Contents
Contents ................................................................................................2
Safety and the environment ....................................................................3
EC declaration of conformity ..................................................................7
Product description ................................................................................8
First steps ..............................................................................................9
Using the product ..................................................................................12
Preparing for measurement ....................................................................12
Performing the measurement ..................................................................14
Checking the instrument ........................................................................18
Maintaining the product ........................................................................19
Tips and assistance ..............................................................................25
Accessories and spare parts ................................................................26
Appendix ..............................................................................................27

Safety and the environment 3
Safety and the environment
About this document
❯Please read this documentation through carefully and familiarise yourself with
the product before putting it to use. Keep this documentation to hand so
that you can refer to it when necessary. Hand this documentation on to any
subsequent users of the product.
❯Pay particular attention to information emphasised by the following symbols:
· With the signal word Warning!:
Warns against hazards which could result in serious physical injury if the
precautionary measures indicated are not taken.
· With the signal word Caution!:
Warns against hazards which could result in minor physical injury or damage
to equipment if the precautionary measures indicated are not taken.
· Additional information.
Avoiding personal injury/damage to equipment
❯Do not make measurements with the measuring instrument and its sensors
on or near live components unless the instrument is expressly approved for
current/voltage measurements!
❯Never store the measuring instrument together with solvents and do not use
any desiccants.
❯Only operate the measuring instrument properly, for its intended purpose
and within the parameters specified in the technical data. Do not use force.
❯Only carry out the maintenance and repair work that is described in the
documentation. Follow the prescribed steps exactly. Only use original spare
parts from Testo.
Any additional work must only be carried out by authorised personnel.
Testo will otherwise refuse to accept responsibility for the proper functioning
of the measuring instrument after repair and for the validity of certifications.
❯Temperatures given on probes/sensors relate only to the measuring range of
the sensors. Do not expose handles and feed lines to any temperatures in
excess of 70 °C unless they are expressly permitted for higher temperatures.
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Specifications4
Products with BluetoothÒ (Option)
Changes or modifications, which are not expressly approved by the responsible
official body, can lead to a withdrawal of operating permission.
Interference with data transfer can be caused by instruments which transmit on
the same ISM band, e.g. microwave ovens, ZigBee.
The use of radio connections is not allowed in e.g. aeroplanes and hospitals.
For this reason, the following point must be checked before entering:
Deactivate Bluetooth function
Main menue - Settings - Buetooth - deactivate Bluetooth (Off)
Protecting the environment
❯Take faulty rechargeable batteries/spent batteries to the collection points
provided for them.
❯Send the product back to Testo at the end of its useful life. We will ensure
that it is disposed of in an environmentally friendly manner.
Specifications
Functions and use
The testo 327 is a hand-held measuring instrument for the professional flue gas
analysis of domestic and light commercial gas and oil boilers and appliances.
This includes condensing boilers and gas heaters. The unit is designed to carry
out tests shown in BS 7967, and has a timed tightness test, let by test and a
timed CO function.
These systems can be adjusted using the testo 327 and checked for
compliance with the applicable limit values.
The testo 327 is available in four versions; the scope of function varies
according to the version:
· testo 327 O2: Infrared interface
· testo 327 CO: Infrared interface
· testo 327-1 (O2, CO): Infrared interface
· testo 327-2 (O2, CO): Infrared / IRDA interface, memory, automatic sensor
diagnosis, option: Bluetooth (data interface)

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):
O2content [%],
O2air supply [%],
Reference value O2ref [%] 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),
(H2share <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 η2[%],
Efficiency η+3) [%] 0...120% / 0.1% ±0.2% / -

Specifications6
Display variables [units] Measuring range/resolution Accuracy/response time 1)
Flue gas loss, calculated
Flue gas loss qA2) [%], 0...99.9% / 0.1% - / -
Flue gas loss qA+3) [%], -20.0...99.9 / 0.1% - / -
Air ratio (not 327 CO)
Air ratio λ[-] 1...20 / 0.01 - / -
Carbon dioxide
CO2content [%] 0...CO2max / 0.01% - / -
1) Recommended minimum duration of measurement to guarantee correct readings: 3min, 2) Calorific value range not taken into account,
3) Calorific value range taken into account
Calculation formulae for calculated display variables
· See Appendix
Fuels
· Quantity: 5
· Designation/fuel parameters: See Appendix
Ambient conditions
· Operating temperature: -5...45°C/23...113°F
· Storage temperature for measuring instrument:
-20...50°C/-4...122°F,
Li-ion rechargeable battery: 0...35°C/32...95°F
Housing
· Material: ABS/PA/TPU
· Dimensions: 240 x 90 x 58mm
· Weight: Approx. 620g
· Protection class: IP40
Voltage supply
· Current source: Li-ion rechargeable battery
3.7 V/1.4 Ah (0515 0114) / 3.7 V/2.4 Ah (0515 0100),
mains unit 6.3V/1.2A
· Battery life (measuring gas pump on, display light off):
Approx. 4 h (0515 0114) / approx. 10h (0515 0100)
· Battery charge time: Approx. 5-6 h
Display
· Type: Illuminated LCD
· Updating of readings: 1/s
Directives, standards and tests
· EC Directive: 2004/108/EEC
· Tests: EN 50379, Part 2 (O2, °C, hPa),
Part 3 (CO), testo 327-2 with option
COH2 additionally: EN 50379, Part 2
(CO)
CO accuracy: independantly tested to
BS7967
Warranty
· Measuring instrument, flue gas probe: 24 months
· Measuring cells: 24 months
· Thermocouple: 12 months
· Rech. batt.: 12 months
Option Bluetooth (testo 327-2 only)
· Type-designation: BlueNiceCom IV
· Bluetooth Qualified Product Notice:
BNC4_HW2x_SW2xx
· Bluetooth listing identifier: B013784
· Bluetooth listing company: 10274
Range <10m
Option Bluetooth® Certification
EU countries
Belgium (BE), Bulgaria (BG), Denmark (DK),
Germany (DE), Estonia (EE), Finland (FI), France (FR),
Greece (GR), Ireland (IE), Italy (IT), Latvia (LV),
Lithuania (LT), Luxembourg (LU), Malta (MT),
Netherlands (NL), Austria (AT), Poland (PL),
Portugal (PT), Romania (RO), Sweden (SE),
Slovakia (SK), Slovenia (SI), Spain (ES), Czech
Republic (CZ), Hungary (HU), United Kingdom (GB) and
Republic of Cyprus (CY).
Other EFTA Countries
Iceland, Liechtentein, Norway and Switzerland
Non-european countries
Columbia, Turkey, El Salvador

EC conformity declaration 7
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EC declaration of conformity

Product description8
Product description
At a glance: Measuring instrument
➀Head: IR interface (327-2: IRDA) for
connection to Testo protocol printers,
ON/OFF switch ( ), condensate outlet.
Caution! Risk of injury from
infrared beam!
❯Do not point infrared beam at people's
eyes!
➁Display.
Display symbols
: Battery capacity( : full, : empty)
: Print function: sends data
➂Control keys
Key functions
: Function keys (3x): shows relevant function on
the display.
: Up/down keys: changes display view.
: Light key: switches display light on/off.
: Menu key.
: Cancel key.
➃Sensor socket for TC temperature probe, flue gas socket for flue gas probe,
gas outlet, mains socket
➄Sides: window of condensate trap with fill level display
➅Rear: service compartment (battery, measuring cells)
➆Rear: magnets for fixing measuring instrument to metallic surfaces.
Warning! Strong magnets can cause damage!
❯Keep well away from products which could be damaged through the effects of
magnetism (e.g. pacemakers, monitors, computers, credit cards).
➇Rear: eyelet for attaching a carrying strap (accessory).

First steps 9
At a glance: Flue gas probe
➀ Removable filter chamber with window
and particle filter
➁Probe handle
➂Connecting cable
➃Connector for measuring instrument
First steps
Charging rechargeable battery
Charge the rechargeable battery fully before using the measuring instrument.
The rechargeable battery can only be charged at an ambient temperature of
0...+35 °C. If the rechargeable battery pack has discharged completely, the
charging time at room temperature is approx. 5-6 hrs.
➣Charging the rechargeable battery in the measuring instrument:
✓The measuring instrument must be switched off.
1Connect the plug of the mains unit to the mains unit socket on the
measuring instrument.
2Connect the mains plug of the mains unit to a mains socket.
- The charging process will start. The charge status will be shown on the
display. The charging process will stop automatically when the
rechargeable battery is fully charged.
➣Charging the rechargeable battery in charger 0554 1087 (accessory):
Refer to the documentation that comes with the charger.
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➀
➁
➂➃

First steps10
Operation with the mains unit
If the mains unit is connected, the measuring instrument is automatically
powered from the mains unit. It is not possible to charge the rechargeable
battery in the measuring instrument during operation.
1Connect the plug of the mains unit to the mains unit socket on the
measuring instrument.
2Connect the mains plug of the mains unit to a mains socket.
- The measuring instrument is powered via the mains unit.
- If the instrument is switched off and a rechargeable battery is inserted,
the charging process will start automatically. Switching the measuring
instrument on has the effect of stopping rechargeable battery charging
and the measuring instrument is then powered via the mains unit.
Switching on/off
➣Switching the instrument on:
❯Press .
- Initialisation phase:
· All display segments are lit (length of time: 3 s).
· Serial number, firmware version, instrument designation, date, time and country-
specific version of instrument are displayed (length of time: 5 s).
- The Measure flue gas option is displayed.
➣Switching the instrument off:
❯Press .
- sometimes: The pump starts and the measuring cells are rinsed until the
switch-off thresholds (O2>20 %, other parameters 50 ppm) are reached.
Rinsing lasts no more than 2 minutes.
Performing instrument settings
➣Performing settings:
1Press .
2Select Settings using / and confirm entry with the OK function key.