Bacharach Snifit 50 Manual Do Proprietário

Snifi t

  Model 50

Carbon Monoxide Analyzer

Designed for HVAC professionals and utility person-

nel, the Snifi t Model 50 Analyzer is ideal for measuring 

low levels of CO in ambient air such as in rooms and 

garages, or around registers, furnaces, stoves, water 

heaters, and other types of combustion appliances. 

The Snifi t samples the surrounding air and shows the 

detected concentration of CO on its Liquid Crystal Dis-

play. The Snifi t is not intended to be used in fl ue gases 

or in temperatures exceeding 104 °F (40 °C).

• Measures and displays 0 to 1999 ppm CO in room air

• Sensitive CO sensor will last up to 2 years

• Backlight for viewing in dark areas

• Compact pocket size

• Low battery indication

• Manual zero adjust

• Factory calibrated on 100 ppm CO

• Simple fi eld calibration

• Auto power-off after 35 minutes

• Single 9V battery (included) provides at least 

1500 hours of operation

621 Hunt Valley Circle, New Kensington, PA 15068

Ph: 724-334-5000 • Fax: 724-334-5001 • Toll Free: 800-736-4666

Website: www.mybacharach.com • E-mail: help@mybacharach.com

Printed in U.S.A. 

® Registered trademarks

Instruction 0019-9201

Rev.4 – May 2010

- 5 -

- 6 -

CO Sensor and Gasket .................................... 0019-7061

Filter ................................................................ 0019-3244 

Calibration Kit ................................................ 0024-7059

Calibration Tool / Cup Kit .............................. 0019-3242

Span Gas Cylinder, 100 ppm CO in air ......... 0051-1994

Zero Gas Cylinder, 20.9% O

2

 in Nitrogen ...... 0051-7131

Replacement parts and accessories can be obtained by 

contacting the following Bacharach Service Center:

Bacharach, Inc., 621 Hunt Valley Circle

New Kensington, PA 15068

Phone: 1-800-736-4666 • FAX: 724-334-5723

CO 
SENSOR

GASKET

FILTER

WARNING!
Remove jumper-wire 
(if installed) from pins 
before installation

4. Remove wire-jumper (if installed) from pins of new 

sensor; plug in sensor and install the new gasket     

supplied; then reassemble the instrument.

5. Wait 30 minutes; then calibrate the new sensor. 

3.  Push the Calibration Cup over the sensor housing.

4.  Attach a CO Span Gas Cylinder to the regulator. 

Then apply span gas to the sensor by adjusting the 

regulator knob for a fl ow rate of 2 SCFH.

5.  Allow span gas to fl ow until the displayed reading 

stabilizes – approx. 3 minutes. Then, using Calibra-

tion Tool 0006-9453 (supplied in Calibration Tool / 

Cup Kit 0019-3242), turn the Span Adjust poten-

tiometer until the displayed reading matches the 

concentration stamped on the Span Gas Cylinder.

6.  Calibration is now complete. Turn off the Regulator 

and remove the calibration equipment.

Remove slotted screw from rear 

of instrument; then lift off front 

case.  

Replace 9V Alkaline battery 

(Duracell MN1604 or equiv.) in 

location shown in Figure 3; then 

reinstall front case.

The sensor needs replaced when 

it can no longer be calibrated to the Span Gas Cylinder 

value using the Span Adjust potentiometer, or if it no 

longer responds to a CO source.

1.  See Figure 4. Remove the screw from the rear of the 

instrument; then lift off the front case and remove 

the printed circuit board assembly.

2.  Unplug the old sensor and remove its gasket. Dis-

card both items properly.

3.  Inspect the sensor fi lter. Replace the fi lter if it has 

become contaminated with dirt.