background image

C50/C75-MAN    

P. 5

N         G         Cond

1. Press “

ENTER

”.

2. Select “

N

” for Net, or “

G

” for Gross or “

COND

” to

calculate efficiency.
• Gross Efficiency uses the gross calorific value of the fuel and

deems that the latent heat of vaporization is lost up the flue
of the appliance and is taken as a loss. Gross is used in the
UK and USA

• Net Efficiency uses the net calorific value and assumes the

latent heat is not lost up the flue - For Natural gas this
efficiency can be 11% higher than the Gross Figure - Net is
used in France and Germany

• COND is for efficiency of condensing appliances

3. Press “

ENTER

” to save and exit.

PPM         MG

1. Press “

ENTER

”.

2. Select “

PPM

” for parts per million or “

MG

” for mF/M3

(milligrams per cubic meter) using the up or down keys.

3. Press “

ENTER

” to save and exit.

SERVICE

1. The service mode is used for repair and calibration, and

should only be entered by authorized service facilities.

2. The firmware can be displayed by entering “

2222

” for

the code.

You may exit the menu at any time by rotating the selector to a 
different position unless the final logical “

ENTER

” is pressed, no

changes are made.

The exception is: STORE DELETE where the “

ENTER

” key must be

pressed to confirm the change and exit. If you rotate the dial before
pressing “

ENTER

” the instrument will be continuously. You must rotate

the dial back to “

MENU

” and press “

ENTER

” before you can continue.

In STORE view mode the rotary dial is used to select the saved 
parameter to be displayed. Use the “

UP/DOWN

” keys to change the

test number. To exit the view mode press “

ENTER

”.

Storing Test Results

At any time during a test you may store the readings in one of the 1
memory positions. Press “

||

” and hold for 2 seconds or more.

Printing Information

Supplied as an accessory for the analyzer is an infrared thermal printer.
Read the manual supplied with the printer prior to operation.
Connection to the analyzer is detailed below:

• Infrared thermal printer - this does not require a cable to

transmit the data but uses an infrared (IR) link similar to a TV
remote control. The IR emitter is positioned on the top of the
analyzer and the bottom of the printer. Ensure they are pointing
at each other and within 3 feet, with no obstructions in the way.
Data may be lost if transmission is interrupted. Keep the analyzer
pointing at the printer until the printout has finished.

Printing A Test

During combustion tests the analyzer can print data on request. With
the analyzer showing the data, press and hold the “          “ push-button
until “

PRINTING

” is displayed.

The standard printout is:
*C75 only
**C50 only

NOTE:

Printouts of stored

readings will also include 
the TEST NO. below the
header.

EFF% (G) = gross
EFF% (N) = nett
EFF% (C) = condensing

SMOKE area on printout
is for adding data from
manual test.

UEI C75

16 character header
16 character header

503 644 8723

Date:  06-26-02
Time:  14:27

Fuel

NATU

GAS

O2

%

20.9

CO2

%

0.0

CO*

PPM

00

COa*

PPM

00

NETT.

F

----

AMB

F

----

EFF% 

(G)

----

XAIR

%

----

LOSSES**

%

----

CO/CO2

----

PE %
O2 ref %

SMOKE................................................................

Summary of Contents for C50

Page 1: ...C50 C75 INSTRUCTION MANUAL 99 Washington Street Melrose MA 02176 Phone 781 665 1400 Toll Free 1 800 517 8431 Visit us at www TestEquipmentDepot com ...

Page 2: ...ON and OFF Hold to scroll through top line display also selectable through menu 6 Hold Store Freezes reading on display Entire display flashes Press and hold for 2 seconds to store data in memory 7 Rotary Selector 8 Particle Filter 9 Water Trap 10 Analyzer Connections Main Display Parameters O2 Oxygen reading in percentage Tf Temperature is measured by the flue gas probe in Centigrade or Fahrenhei...

Page 3: ...is the ratio of measured CO divided by calculated CO2 It gives an indication of How good a gas sample the instrument is reading How clean the boiler is running For example A new or clean domestic boiler will display a ratio of less than 0 004 a unit in need of cleaning 0 004 0 008 and a unit in need of major overhaul will show greater than 0 008 This only shows a reading when a combustion test is ...

Page 4: ... sampling point be located at least two flue diameters downstream of any bend as close to the source as possible and that the probe tip is in the center of the flue With balanced flues and other domestic units the probe should be positioned far enough into the flue so that no air can back flush into the probe The probe depth stop cone provided with the instrument allows the probe to be used in hol...

Page 5: ...e above the function keys The three keys are increases decrease and enter Set Time 1 Press ENTER 2 Use the up and down keys to select the correct time 3 Press ENTER to move to the next digit Note Time is displayed in military format example 7 00 pm is 19 00 Date 1 Press ENTER 2 Select desired format for the date display MM DD YY for month day year YY MM DD for year month day DD MM YY for day month...

Page 6: ...STORE view mode the rotary dial is used to select the saved parameter to be displayed Use the UP DOWN keys to change the test number To exit the view mode press ENTER Storing Test Results At any time during a test you may store the readings in one of the 1 memory positions Press and hold for 2 seconds or more Printing Information Supplied as an accessory for the analyzer is an infrared thermal pri...

Page 7: ...r x 2488 2 1 Tf 4 2 Ti Simplified 9 x H2 H2O Qgr x 2425 x 1 0 001 Tnet Wet loss K3 1 0 001 x Tnet Where K3 9 x H2 H2O Qgr x 2425 Combustion Combustion Theory In its simplest form combustion is the combining of oxygen O2 from the air with hydrogen H and carbon C from the fuel to form carbon dioxide CO2 water H2O and energy light and heat Perfect combustion occurs when all of the carbon and hydrogen...

Page 8: ...ir free In the example we would be breaking the limit and corrective action should be taken to reduce the level of CO Air free values prevent false readings being submitted e g allowing more air into the boiler will increase the oxygen level in the flue and dilute any toxic gas reading Air free referencing gives readings as if they were undiluted What Does Oxygen Reference Mean Oxygen referencing ...

Page 9: ...k Slide outward Pull plug out to drain Insert a new filter Maintenance Periodic Service WARNING Repair and service of this instrument is to be performed by qualified personnel only Improper repair or service could result in physical degradation of the instrument This could alter the protection from personal injury this meter provides to the operator Perform only those maintenance tasks that you ar...

Page 10: ... 10 V AC off load Annual Re Calibration While the sensor has an expected life of more than two years in normal use it is recommended that the analyzer is re calibrated at least annually This is so that long term drift on the sensor and electronics can be eliminated local regulations may require more frequent re calibration and users should check with appropriate authorities to ensure the comply wi...

Page 11: ...ited to implied warranties of merchantability and fitness for a particular purpose are limited to the express warranty UEi shall not be liable for loss of use of the instrument or other incidental or consequential damages expenses or economic loss or for any claim or claims for such damage expenses or economic loss A purchase receipt or other proof of original purchase date will be required before...

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