DWYER 1207A
Flue Gas Analyzer
Dwyer Instruments Inc
P.O. Box 373
Michigan City
INDIANA, H6361
USA
Tel: 219 879 8868
Fax: 219 872 9057
Stock No: 18744-2 September 2009
CONTENTS
Page No:
DWYER 1207A USER GUIDE 3
1. ANALYZER FEATURES AND KEYPAD 4-5
2. BEFORE USING THE ANALYZER FOR THE FIRST TIME 6
3. BEFORE USING THE ANALYZER EVERY TIME 7
4. USING THE ANALYZER AND ITS FOUR BUTTONS 8-9
5. USING THE DWYER 1207A AS A THERMOMETER OR PRESSURE
METER 10
6. USING THE ROTARY DIAL (STARTING FROM MENU) 11-13
7. MAIN MENU FUNCTIONS 14-17
8. MEASURING MODES 18-24
- MEASURING FLUE GASES 18
- STANDARD COMBUSTION PRINTOUT 19
- STORING A DRAUGHT MEASUREMENT TO PRINT WITH A
COMBUSTION TEST 20
- MEASURING PRESSURE 21
- MEASURING TEMPERATURE 22
- MEASURING AMBIENT AIR (ROOM CO) 23
- MEASURING FLUE DRAUGHT 24
9. WHEN YOU FINISH A COMBUSTION TEST 25
10. ANALYZER PROBLEM SOLVING 26
11. ANALYZER ANNUAL RECALIBRATION AND SERVICE 27
12. ANALYZER SPECIFICATION
13. ELECTROMAGNETIC COMPATIBILITY 30
(NOTE MAY BE SUBJECT TO CHANGE
) 28-29
APPENDIX 1 – MAIN PARAMETERS 31-32
1207A manual Page 2
DWYER 1207A
User Guide
The DWYER 1207A Combustion Analyzer measures O
temperature, differential pressure and CO.
It calculates efficiency (Nett, Gross or Condensing), losses, the CO/CO
Poison Index, excess air and CO air free in ppm only.
The analyzer can be upgraded with the addition of a Nitric Oxide sensor either
on initial purchase or as a retrofit as part of an annual service procedure.
In addition the DWYER 1207A Combustion Analyzer’s CO sensor checks
carbon monoxide levels in ambient air - useful when a CO Alarm is triggered
and tests the safety of appliances.
The CO and NO readings can be referenced to the oxygen reading in ppm or
mg/m
It has a protective rubber sleeve with a magnet for “hands–free” operation and
their flue probes work on all combustion appliances and take ambient air
measurements.
The large display shows 4 readings at a time and all data can be printed via an
optional infrared printer. The printed data can be 'live' data, 'frozen' data or
'stored' data. 255 sets of tests can be stored. Note: stored data is lost if the
batteries are removed or are exhausted. Two lines of 16 characters can be added
to the header of printouts.
The analyzer is controlled using 4 buttons and a rotary dial.
The four buttons (from left to right) switch on and off the analyzer, print actual
or frozen data/ switch on and off the backlight, switch on and off the pump and
3
.
differential
2,
ratio,
2
“freeze”/ hold data. The buttons with
settings such as date, time, fuel source, etc. when in MENU mode.
The rotary dial changes the LED indicated display line and selects access to the
menu to make changes to the date, time, fuel, etc.
1207A manual Page 3
, and arrows also change
1. ANALYZER FEATURES AND KEYPAD
ON / OFF
Turns the analyzer ON / OFF
PRINT / BACKLIGHT
Press to print “live” or “frozen”
data. Press again to abort.
Press for 2+ seconds to switch
backlight & torch ON / OFF
1207A manual Page 4
PUMP / CAL PRESSURE
Turns the pump ON / OFF
Press for 2+ seconds to zero the
pressure sensor
LINE SELECT / FREEZE
Press to select active line on
display as indicated by LED’s
Press for 2 seconds to “HOLD”
Press longer to “LOG”
1207A manual Page 5
2. BEFORE USING THE ANALYZER FOR THE FIRST
TIME:
Turn over the analyzer, remove its’ protective rubber sleeve and fit 4 “AA” batteries in the
battery compartment. Take great care to ensure they are fitted with the correct battery
polarity. Then replace the battery cover and protective rubber sleeve. Always check that the
analyzer is working correctly after replacing batteries.
Set the analyzer’s correct time, date, fuel source, etc., after it is switched on and calibrated –
See USING THE ROTARY DIAL below. These settings are stored when the analyzer is
switched off.
Using Re-Chargeable Batteries.
This analyzer has been designed for use with both alkaline and rechargeable Nickel Metal
Hydride (NMiH). No other battery types are recommended.
WARNING
The battery charger unit must only be used when NMiH batteries are fitted.
NMiH batteries are entirely suitable for top up charging at any time, even for shorts periods.
Alkaline batteries are not re-chargeable. Attempting to recharge Alkaline batteries may result
in damage to the product and may create a fire risk.
Ensure the batteries are fitted in the correct manner.
Charger
Ensure that you use the correct charger. The part number is KMCU450/US.
An in-vehicle adapter can be used to top up the analyzer's batteries from a 12 volt vehicle
battery. The part number is KMCU450/ 12.
Trickle Charging
subsequently charge overnight for approx. 8 hours.
Fast Charging
analyzer off. The display will then show "BATTERY CHARGING".
Battery Disposal
Always dispose of depleted batteries using approved disposal methods that protect the
environment.
: On first charging, charge for at least 12 hours continuously,
: With the analyzer switched on connect the charger and then switch the
1207A manual Page 6
3. BEFORE USING THE ANALYZER EVERY TIME:
Check the water trap is empty and the particle filter is not dirty:
- To empty water trap, unplug its’ rubber stopper and re-plug once it is empty.
- To change the filter, remove protective rubber sleeve, pull out the water trap unit from
the analyzer, remove the water trap’s particle filter from its’ spigot and replace.
Reconnect the water trap and rubber protective sleeve.
Connect the flue probe into the bottom of the analyzer’s water trap and connect the probe’s
temperature plug to the socket next to the water trap – check the plug’s orientation is correct
otherwise incorrect temperature measurements will occur.
After switch on, check fuel source, date and time are correct and battery power is sufficient.
SAFETY WARNING
This analyzer extracts combustion gases that may be toxic in relatively low concentrations.
These gases are exhausted from the back of the instrument. This analyzer must only be used
in well-ventilated locations by trained and competent persons after due consideration of
all the potential hazards.
Sensor manufacturers recommend users of portable gas detectors containing electrochemical
sensors conduct a “bump” check before relying on the unit to verify an atmosphere is free
from hazard.
A “bump” test is a means of verifying that an instrument is working within acceptable limits
by briefly exposing to a known gas mixture formulated to change the output of all the sensors
present. (This is different from a calibration where the instrument is also exposed to a known
gas mixture but is allowed to settle to a steady figure and the reading adjusted to the stated gas
concentration of the test gas.)
For Oxygen monitors a level of confidence that the unit is working adequately may be gained
by exhaling over the sensor inlet and viewing the reduction in reading obtained.
1207A manual Page 7
4. USING THE ANALYZER AND ITS FOUR BUTTONS:
Switching ON
the Analyzer
Switching OFF
the Analyzer
Press to switch the unit ON in fresh air outside the property about
to be tested. This lets the analyzer auto calibrate its’ sensors properly.
On switch on, the analyzer beeps four times and displays the fuel
previously selected, the date and time and model number. Its’ bottom line
counts down from 60 until the sensors are ready to use – This normally
takes 20 - 30 seconds but may take longer as sensors get older. If the
analyzer will not auto calibrate, its’ sensors need to be replaced or
recalibrated by an authorized repair center.
If the inlet probe is connected to the analyzer during its’ countdown the
measured temperature from the inlet probe will be used as the inlet
temperature.
If the inlet probe is not connected and you connect the flue probe’s
temperature plug to the analyzer during countdown the measured
temperature from the flue probe will be used as the inlet temperature.
If neither probe is connected during countdown the analyzer’s internal
ambient temperature will be used as the inlet temperature.
Press to switch the analyzer OFF. The display counts down from
30 with the pump on to clean the sensors with fresh air – If the probe is
still connected, make sure analyzer and probe are in fresh air.
Press / if you want to stop the countdown and return to
making measurements.
Note: the analyzer will not switch off until the CO reading is below
20 ppm.
Using UP /
DOWN /
ENTER Buttons
Printing Data
1207A manual Page 8
Use the / / keys to change settings (such as time, date
and fuel) when the rotary dial is turned to MENU.
Press and quickly release the key to start the analyzer printing. The
analyzer displays "PRINTING" until this is completed. Press and release
the key again to abort printing.
Make sure the printer is switched on, ready to accept data and its’ infrared
receiver is in line with the analyzer’s emitter (on top of the analyzer).
Backlight
Tasklight
Switching
PUMP on / off
Zeroing the
pressure sensor
“Freezing” the
display
Press and hold to toggle the display's backlight.
Note: use of the backlight increases the current drain on the batteries.
Comes on with the display's backlight... see above.
The analyzer normally operates with the pump on. Press quickly
to switch the pump off and on.
When the pump is switched off, the analyzer displays "PUMP OFF"
approx every 30 seconds.
NOTE: the pump will not switch off if the CO reading is above
20 ppm. This helps to protect the CO sensor from damage.
NOTE: the pump cannot be switched off with the rotor set to
-----------MENU.
Press and hold the key until the top line display shows ZERO
CAL.
Press and hold the / key until a second beep is heard to
freeze all readings. The display flashes and readings can be printed by
pressing key. Press and hold the / key again until a
second beep is heard to go back to “live” measurements.
The
function is inhibited when the display LEDs are flashing.
Storing a set of
readings
Press and hold the
Note: this STORE function is inhibited if the display LEDs are flashing.
/ key for approx. 4 seconds.
Note: this STORE function is inhibited in normal operation if the pump is
switched off.
Changing the
display's active
line
Press and release the
the display line that you wish to change. While the LEDs are flashing
turn the rotary dial to display the parameter that you want. If the rotary
dial is not turned the active line will go back to its previous setting after
/ key until the illuminated LEDs point at
approx. 5 secs.
1207A manual Page 9
5. USING THE DWYER 1207A AS A THERMOMETER OR
PRESSURE METER
With the analyzer switched off, press and hold down the button and then press and
release the button, then release the button.
The DWYER 1207A will now operate as a fixed display pressure meter/thermometer with the
pump off and inhibited.
The display will show: pressure
flue temp
inlet temp
differential temp
The rotary dial display indications will now be locked apart from MENU. Readings can be
held and logged in the normal way. Up to 8 sets of readings can be logged.
Exit this mode by switching the DWYER 1207A off.
The standard printout for this mode is as follows:
DWYER 1207A 1.0
Serial No. 123456789
DATE 11/01/09
TIME 09:53:23
..............................................
PRS INWG 0.001
T1 48
T2 15
∆T 33
1207A manual Page 10
6. USING THE ROTARY DIAL (starting from Menu):
Rotating the dial selects the displayed parameter, unless MENU is selected or the
pressure/temperature mode has been selected.
ROTARY DIAL POSITIONS
MENU
BAT
TIME
LOSS
CO/CO2 ratio
CO
2
O
2
T inlet
T Flue
Switches to MENU function.
Displays estimated battery life.
If battery voltage falls below a pre-set limit, the display flashes
"LOW BAT" every 10 seconds. See Page 6 to change the batteries
or re-charge, if applicable.
Displays Time.
Displays calculated losses when O2 values are less than 18%.
Measured CO divided by calculated CO2 when O2 values are less
than 18%
.
Displays calculated Carbon Dioxide values once O2 values are
below 18%.
Displays Oxygen values in %.
Displays the inlet probe temperature.
Displays flue probe temperature.
If the flue probe’s temperature sensor is broken or open circuit it
displays - OC -.
1207A manual Page 11
T Nett
CO
NO
(if fitted)
PRS
X AIR
EFF
AUX
Displays the difference between flue and inlet / ambient
temperatures.
If the flue probe’s temperature sensor is broken or open circuit it
displays - OC -.
Displays Carbon Monoxide values in PPM as CO
in ppm normalized ac COn
Display value in mg/m3 as COm
in mg/m3 normalized as COĦ
Displays Nitric Oxide values in PPM as NO
in ppm normalized as NOn
Display value in mg/m3 as NOm
in mg/m3 normalized as NOĦ
Display the measured pressure or draft value in user selected units.
Displays calculated excess air when O2 values are less than 18%.
Displays calculated efficiency when O2 values are less than 18%
EFFn, EFFg or EFFc as selected by the user.
Addition user selectable displays.
Rotate the dial to MENU and use the or buttons to select the following function
for change:
When you have selected the function to change, press
Repeat this to scroll through the menu and select (using the
to select.
key) and change (using the
/ keys) the function.
The final, logical returns you to the main menu display.
To exit the Menu function you can normally rotate the dial to another position - Unless the
final logical is pressed, no changes are made.
1207A manual Page 12
The exception is:
STORE DELETE where the key must be pressed to confirm the
change and exit. If you rotate the dial before pressing the
instrument will beep continuously. You must rotate the dial back to
MENU and press before you can continue.
In STORE View mode the rotary dial is used to select the saved parameter to be displayed.
Use the / keys to change the Test number. To exit the View mode press .
1207A manual Page 13
7. MAIN MENU FUNCTIONS
There are six menu headings each with its own sub-menu
SETUP
PRESSURE
STORE
REPORTS
SCREEN
SERVICE
Fuel selection
Efficiency calculation
Time and date setting
Temperature unit
Gas units
Oxygen referencing
Language
Exit
Smoothing
Resolve (number of decimal points resolution)
Number of decimal points resolution
Units
Time
Exit
View
Auto store
Delete
Exit
Pressure
Temperature
Room CO
Draught
Exit
Contrast
Auxiliary display
Header
Exit
Password protected
1207A manual Page 14
SETUP
SET FUEL
N < -C- > G
SET TIME
SET DATE
C <---> F
PPM < - > MG
NATU GAS
L OIL
PROPANE
BUTANE
L.P.G.
PELLETS
N
C
G
xx: yy: zz
HH: MM: SS
MM- DD- YY
DD- MM- YY
YY- MM- DD
F
C
ppm
MG/M3
Set fuel type
Nett
Condensing
Gross efficiency calculation
Set time values
Choose date format then set date
values
Fahrenheit
Centigrade
Parts per million
Milligrams per cubic meter
O2 REF
LANGUAGE
NO
YES
English
French
Italian
German
Spanish
Dutch
Swedish
Set reference value
Set language
1207A manual Page 15
PRESSURE
SMOOTH
POINTS
PS UNITS
OFF
ON
LOW
HIGH
inH2O
mBAR
mmH2O
Pa
kPa
PSI
mmHg
hPa
Select smoothing
Select decimal point resolution
Select pressure units
STORE up to 255 sets of combustion test results can be stored
VIEW
TEST xxx Enter test number to be viewed then
use rotary dial to select display.
If less than 9 set of readings are stored
rotate the dial then use the up/down
buttons to change the LOG number.
AUTO STO
DEL ALL
YES/NO If YES set logging time interval in
minutes.
YES/NO Clears stored values.
REPORT
There are dedicated report formats for the following tests:
Pressure
Temperature
Room CO
Draught
All report menus follow the format TEST / VIEW / DEL ALL.
The TEST functions are described later.
1207A manual Page 16
SCREEN
CONTRAST
AUX
HEADER
SET xx Lighten or darken the display
Selected Fuel
Assign the AUX rotary dial position
Pressure units
COM
Date
CO air free
O2 Reference value
Header 1
Header 2
2 lines each of 20 characters
1207A manual Page 17
8. MEASURING MODES
MEASURING FLUE GASES
After the countdown is finished and the analyzer is correctly set up, put its’ flue probe into the
appliance’s sampling point. The ideal sampling point is at least two flue diameters
downstream of any bend.
Put the probe tip in the flue center. With balanced flues, make sure the probe is positioned far
enough into the flue so no air can ‘back flush’ into the probe.
Use the probe’s depth stop cone to fix it in flue diameters from 1/4 to 4/5 inch, 6 to 21 mm. Its
maximum operating temperature is 1112°F / 600°C.
Make sure you do not exceed the analyzer’s operating specifications. In particular:
• Do not exceed the flue probe’s maximum temperature
• Do not exceed the analyzer’s internal temperature operating range
• Do not put the analyzer on a hot surface
• Do not exceed the water trap’s levels
• Do not let the analyzer’s particle filter become dirty and blocked
View the displayed data to ensure that stable operating conditions have been achieved and the
readings are within the expected range.
Press PRINT or press HOLD first to “freeze” or store the readings before printing.
1207A manual Page 18
STANDARD COMBUSTION PRINTOUT
DWYER 1207A 1.0 /product code
Serial No. 123456789 /serial number
/user header 1
/user header 2
DATE 11/01/09
TIME 09:53:23
..............................................
FUEL NATU GAS
O2 % 5.1
CO2 % 9.0
CO ppm 400
NO ppm n/f /NO sensor not fitted
FLUE oF 48
INLT oF 15
NETT oF 33
EFF (C) 102.1 /condensing efficiency
PRS INWG 0.001
Losses % -2.1
XAIR % 32.1
CO/CO2 0.0044
PI 0.44
O2 ref % 0.0
SMOKE......................................
....................................................
1207A manual Page 19
STORING A DRAUGHT MEASUREMENT TO PRINT WITH A
COMBUSTION TEST
Rather than print a draught test report and then a combustion test report it is possible to
combine the two sets of results on one printout by taking a draught reading first and storing it
for printing later.
The following sequence must be followed:
With PRESSURE on the top line and with the rotary dial pointing to Prs... and with the pump
off..... then if LOG is activated the current pressure reading will be stored in the draught
register with its current scaling. All the conditions must be met and no other values will be
logged. As this occurs the top line display briefly shows "DRAUGHT".
While the instrument is in this mode activating LOG again will overwrite the stored reading.
The stored reading is cleared whenever the analyzer is switched off or by entering any
REPORT menu.
Resuming normal operation adds the stored DRAUGHT reading to any combustion printout
or any combustion log. In such cases the printout changes so instead of "PRS" being printed
"DRGT" is printed instead.
NOTE: Whenever there is a stored DRAUGHT reading the current pressure reading is
ignored and the stored reading is always used.
WARNING: This means that if a user stores a draught reading from one appliance and goes
to another appliance without switching off or re-entering the reports menu his printouts and
logs will show the last stored draught reading and its scaling.
1207A manual Page 20
MEASURING PRESSURE
The analyzer can be used to measure pressure by connecting tubing to the appropriate ports.
Standard Pressure Report ....
this mode is accessed via the MENU function.
This mode allows a tightness test to be carried out automatically.
The times for the test can be set by the user.
From the start of the test the analyzer waits 60 secs to allow temperature stabilization, then
records and displays the pressure reading at the start of a 120 second countdown. The live
pressure reading is displayed during the 120 second countdown and then locked at the end of
the countdown. The display then shows start pressure and finish pressure. The summary
results can then be printed as below:
Pressure Test Printout
DWYER 1207A 1.0
Serial No. 123456789
..............................................
Tightness Test
..............................................
LOG 03
TIME 14:58 11/01/09
PRS_1 INWG 20.110
PRS_2 INWG 19.998
Duration mins 2:00
................................................
customer
................................................
appliance
.................................................
Ref:
..................................................
1207A manual Page 21
MEASURING TEMPERATURE
The analyzer can be used as a normal single input or differential thermometer, ideal for
measuring flow and return temperatures or for setting up hot water temperature/flow on a
combi boiler.
Standard Temperature Report ....
DWYER 1207A 1.0
Serial No. 123456789
..............................................
Temp Test
..............................................
LOG 05
TIME 10:15 11/01/09
T1
T2 oF 24.1
∆T oF 30.0
...............................................
Customer
...............................................
Appliance
...............................................
Ref:
.................................................
o
F 54.1
this mode is accessed via the MENU function.
1207A manual Page 22
MEASURING AMBIENT AIR (ROOM CO)
The analyzer's CO sensor can be used to detect spillage from appliances. A standard spillage
test can be conducted where the analyzer automatically records 16 sets of 1 minute samples
and prints the results as below:
Standard Room CO Report ....
DWYER 1207A 1.0
Serial No. 123456789
..............................................
Room CO Test
..............................................
LOG 05
TIME 16:58 11/01/09
TEST CO ppm
0 1
1 5
2 7
3 9
4 10
5 13
6 16
7 24
8 30
9 28
10 18
11 14
12 10
13 6
14 4
15 3
........................................
MAXIMUM CO 30
.........................................
Customer
.........................................
Appliance
..........................................
Ref:
...........................................
this mode is accessed via the MENU function.
1207A manual Page 23
MEASURING FLUE DRAUGHT
STANDARD DRAUGHT REPORT
DWYER 1207A 1.0
Serial No. 123456789
..............................................
Draught
..............................................
TIME 15:58 11/01/09
PRS INWG 0.54
..............................................
customer
..............................................
appliance
..............................................
Ref:
...............................................
1207A manual Page 24
9. WHEN YOU FINISH A COMBUSTION TEST
Remove its’ probe from the flue - THE PROBE WILL BE HOT - and let it cool. Do not put
the probe in water which will be sucked into the analyzer, damaging its’ pump and sensors.
When the analyzer’s readings return to ambient levels, switch it off. The analyzer counts
down from 30 before switch off with the pump running to self clean its sensors.
1207A manual Page 25
10. ANALYZER PROBLEM SOLVING
If any problems are not solved with these solutions, contact us or an authorized repair center.
Fault symptom Causes / Solutions
• Oxygen too high
• CO2 too low
• Oxygen reading (- - - -)
• CO reading (- - - -)
• Batteries not holding charge
• Analyzer not running on mains
adapter
• Analyzer does not respond to flue
gas
• Net temperature or Efficiency
calculation incorrect
• Air leaking into probe, tubing, water trap, connectors
or internal to analyzer.
• Oxygen cell needs replacing.
• Analyzer was stored in a cold environment and is not
at normal working temperature.
• Oxygen cell or CO sensor needs replacing.
• Pump is switched off.
• Batteries exhausted.
• AC charger not giving correct output.
• Fuse blown in charger plug.
• Particle filter blocked.
• Probe or tubing blocked.
• Pump not working or damaged with contaminants.
• Ambient temperature set wrong during Automatic
Calibration.
• Flue temperature readings erratic • Temperature plug reversed in socket.
• Faulty connection or break in cable or plug.
• T flue or T nett displays (- - - -) • Probe not connected.
• X-Air, EFF, COa or CO2 display
(- - - -)
• Analyzer just continually beeps
• BAT only shows 65 with fully
charged NiMh batteries fitted
• Oxygen reading is above 18%.
• Turn dial back to MENU and press
• This is not a problem and is to be expected as NiMh
batteries only deliver 1.25 V per cell whereas
Alkalines deliver 1.5 V per cell. Fresh alkalines might
give a BAT value of 80 or so.
.
1207A manual Page 26
11. ANALYZER ANNUAL RECALIBRATION AND SERVICE
Although sensor life is typically more than two years, the analyzer should be re-calibrated and
serviced annually to stop any long-term sensor or electronics drift or accidental damage.
Local regulations may require more frequent re-calibration.
Contact us or an authorized repair center for more information.
1207A manual Page 27
12. ANALYZER SPECIFICATION
(NOTE MAY BE SUBJECT TO CHANGE)
Parameter
Temp Measurement
Flue Temperature
Inlet Temperature
(Internal Sensor)
Inlet Temperature
(External Sensor)
Pressure Measurement
Gas Measurement
Oxygen
Carbon Monoxide (CO)
(low range)
Carbon Monoxide (CO)
(high range)
Nitric Oxide (NO)
(low range)
Nitric Oxide (NO)
(high range)
*2
Carbon Dioxide
Efficiency
*2
Excess Air*2
Resolution
0.1°C/F
0.1°C/F
0.1°C/F
0.1 Pa
0.1 Pa
1 Pa
0.01 hPa
0.1%
1 ppm
1 ppm
1 ppm
1 ppm
0.1%
0.1%
0.1%
+0.3% reading
±0.3% reading
+0.3% reading
+3% of reading
+3% of reading
+10 ppm <100 ppm *1
+
+10 ppm <100 ppm
+
5% reading >100 ppm
+2 ppm <30 ppm*1
+5 ppm > 30 ppm
+5 ppm <100 ppm
+5% reading >100 ppm
+
+
Accuracy
+2.0°C
+1.0°C
+2.0°C
+0.5 Pa
+3 Pa
+0.2%*1
5% reading
0.3% reading
1.0% reading
+0.2%
Range
0-600°C / 32-1112oF
0-50°C / 32-122oF
0-600°C / 32-1112oF
+20 Pa
+100 Pa
+2000 Pa
+80 hPa
0-21%
0-2000 ppm nom
4000 ppm max
for 15 minutes
0-4,000 ppm
0 to 100 ppm
0 to 1000 ppm
0-30%
0-99.9%
0-250%
1207A manual Page 28
Pre-programmed Fuels
Dimensions
Weight
Handset
Probe
Ambient Operating Range
Storage Capacity
Battery Life
AC Battery Charger
(optional)
*1
Using dry gases at STP
Natural gas, Light Oil, Propane, Butane, LPG, Wood Pellets.
0.77kg / 2.2lb handset with protective cover
200mm / 7.9” x 45mm / 1.8” x 90mm / 3.5”
L300mm / 11.8” x Dia 6mm / 0.25” with 200mm / 7.8” long
stainless steel shaft, type K thermocouple and 3m / 10ft long
neoprene hose
+0°C to +40°C / 32-104°F
10% to 90% RH non-condensing
99 Combustion tests
20 Pressure tests
20 Tightness tests
20 Temperature tests
20 Room CO tests
4 AA cells
>12 hours using Alkaline AA cells
Input: 110VAC/220 VAC nominal
Output: 10 VAC off load
*2
Calculated
1207A manual Page 29
13. ELECTROMAGNETIC COMPATIBILITY
European Council Directive 89/336/EEC requires electronic equipment not to generate
electromagnetic disturbances exceeding defined levels and have adequate immunity levels for
normal operation. Specific standards applicable to this analyzer are stated below.
As there are electrical products in use pre-dating this Directive, they may emit excess
electromagnetic radiation levels and, occasionally, it may be appropriate to check the analyzer
before use by:
Use the normal start up sequence in the location where the analyzer will be used.
Switch on all localized electrical equipment capable of causing interference.
Check all readings are as expected. A level of disturbance is acceptable.
If not acceptable, adjust the analyzer’s position to minimize interference or switch off,
if possible, the offending equipment during your test.
At the time of writing this manual (February 2009) we are not aware of any field based
situation where such interference has occurred and this advice is only given to satisfy the
requirements of the Directive.
This product has been tested for compliance with
the following generic standards:
EN 61000-6-3
EN 61000-6-1
and is certified to be compliant
Specification EC/EMC/KI/K450 details the
specific test configuration, performance and
conditions of use.
Please Note:
Batteries used in this instrument should be disposed of in accordance with
current legislation and local guidelines.
At the end of the product's life it should be re-cycled in accordance with current
legislation and local guidelines.
1207A manual Page 30
Appendix 1 - Main Parameter:
Here are the legends used and what they mean:
O2 : Oxygen reading in percentage (%).
O2R: Oxygen reference setting. '----' means switched off or set to 0%.
T Flue: Temperature measured by the flue gas probe in Centigrade or Fahrenheit. It
displays ‘- OC -’ if the flue probe is disconnected.
T Nett : Nett temperature calculated by deducting the AMBIENT or INLET
temperature from the measured FLUE temperature. Displays in either
Fahrenheit (°F) or Centigrade (°C) or and will display ‘- OC -’ if the flue
probe is not connected.
T inlet: Temperature measured by the inlet temperature probe in Centigrade or
Fahrenheit. It displays ‘- OC -’ if the flue probe is disconnected.
CO: Carbon Monoxide reading displayed in ppm (parts per million). ‘- - -’ is
displayed if there is a fault with the CO sensor or the instrument has not set
to zero correctly, switch off instrument and try again.
COm: Carbon Monoxide displayed in mg/m3.
COn: Carbon Monoxide in ppm normalized to the O2R value.
COĦ: Carbon Monoxide in mg/m3 normalized to the O2R value.
COa Carbon Monoxide calculation as if there were 0% Oxygen present. This is
only displayed in ppm.
CO2 : Carbon Dioxide calculation determined by fuel type. This is only displayed
when a combustion test is being carried out. ‘-O>-’ is displayed while in
fresh air.
EFF : Combustion efficiency calculation displayed in percentage either as Gross
(G) or Nett (N) or Condensing Nett (C) - Use MENU to change. The
calculation is determined by fuel type and uses the calculation in British
Standard BS845. The efficiency is displayed during a combustion test, ‘-
O>-’ is displayed while in fresh air.
X - AIR : Excess air calculated from the measured oxygen and type of fuel used.
Displays reading during a combustion test. ‘-O>-’ is displayed while in
fresh air.
Loss : Losses calculated from Oxygen and type of fuel. Displays reading during a
combustion test. ‘-O>-’ is displayed while in fresh air.
1207A manual Page 31
BAT Displays the Battery power available in %.
When the LO BAT symbol appears this indicates the batteries are at less
than 10% of charge and should be replaced, readings may be affected if
used with low power batteries. Warning: all stored readings are lost when
the batteries are removed or become exhausted.
DATE : Date shown as day, month and year. The order can be changed using the
menu function. Date is recorded when each combustion test is printed.
TIME : The time is shown in hours and minutes, expressed in “Military” time or the
24hr clock. Time is recorded when each combustion test is printed.
Note! When changing the batteries on the instrument the memory will
store the date and time for up to one minute, if outside this time it may be
necessary to re-enter the details.
Date and time may also need to be reset if re-chargeable batteries are allowed to
totally discharge.
SYMBOLS used on the display:
P Poison Index: measured CO divided by calculated CO2 multiplied by 100
R CO/CO2 Ratio: measured CO divided by calculated CO2
lambda Excess Air
AMB Either the internal temperature of the analyzer or the inlet temperature as
measured during the start up sequence
loss triangle Loss%: losses = 100 minus efficiency %
delta T Nett Temperature
TF Flue Temperature
eff symbol Efficiency %
Ħ mg/m3 normalized
PO Pump off
-O>- Oxygen greater than 18% so calculation is disabled
-OC- Open circuit temperature input
1207A manual Page 32
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