Bacharach Snifit 50 Manual De Propietario

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If you’re not sure about the quality of the surrounding 

air, you can apply a blend of Oxygen/Nitrogen gas to 

the sensor as described under Calibration.

If rapid temperature changes are encountered (such 

as from freezing to room temperatures) during the 

operation of the analyzer, the operator must allow the 

analyzer to stabilize at the ambient temperature for at 

least 2 minutes before taking a measurement.

Important!  Ensure that the sensor grille at the rear of 

After zeroing the Snifi t, simply hold the instrument in 

the area that you suspect the presence of CO gas. If CO 

is present, the instrument will indicate the concentrA-

tion of CO in ppm on its display.

For more extensive CO investigations and testing in 

areas of higher temperatures, the Monoxor

®

 II is the 

preferred instrument.

Pressing the Backlight button will illuminate the 

display for a period of 8 minutes, or until it is manually 

turned off by again pressing the Backlight button.

If the CO level exceeds 1999 ppm, the 

displayed reading is replaced by the 

number “1”.

When the Snifi t’s 9V battery is nearing 

the end of its useful life, 

 will 

Important!  For accurate Snifi t operation, calibration 

To calibrate the CO sensor, you will need the equip-

ment listed under Accessories. Note that the Zero Gas 

Cylinder is needed only if you’re unsure about the qual-

ity of the surrounding air for zeroing purpose.

Calibrate the sensor to a known concentration of CO 

gas as follows:

1.  Assemble the calibration equipment per Figure 2.

2.  Zero the instrument as previously described under 

Zeroing the Sensor. 

 MONOXIDE ANALYZER

 MONOXIDE ANALYZER

ppm CO

CARBON

CARBON

Snifit

model 50

model 50

ZERO

ADJUST

(Recessed)

SPAN
ADJUST
POT.

BACKLIGHT

ON/OFF

POWER ON

POWER OFF

DISPLAY

LO BAT

LOW

BATTERY

INDICATION

1

2

3

4

1. CO Span Gas Cylinder, 51-1994
2. Regulator, 03-4318*
3. Tubing, 03-6351*
4. Flowmeter, 06-6163*
5. Calibration Cup Assembly, 23-2156**

*  Part of Calibration Kit 24-7059
** Part of Tool / Cup Kit 19-3242

5

PUSH CALIBRATION CUP 
OVER SENSOR HOUSING

Gas Monitored .............Carbon Monoxide (CO)

Range ...........................0  to 1999 ppm

Resolution ....................1  ppm

Accuracy ......................± (5% of reading + 5 ppm)

Response ......................

30 sec. to 90% of fi nal value

Power ...........................9V battery

Battery Life .................1500 hours minimum

Temperature Range ....32 to 104 °F (0 to 40 °C)

Case Material ..............High impact plastic

Weight ..........................0.25 lb (0.11 kg) without battery

Dimensions ..................5.5" L x 2.0" W x 1.6" H 

(140 x 51 x 41 mm)

The Snifi t is turned on 

and off by pressing the 
Power On

 and Power 

 buttons, respec-

tively. If the instru-

ment is not manually 

turned off, it will au-

tomatically shut itself 

off after approximately 

35 minutes.

Turn on the Snifi t and allow the displayed reading to 

stabilize before proceeding – approximately 30 seconds. 

Then with the instrument sampling fresh air (air that 

is free of CO), use a screwdriver to adjust the Zero 
Adjust

 potentiometer at the top of the instrument for a 

reading of 0 ±1 ppm.

appear in the upper left hand corner of the display. 

Although you can continue using the instrument under 

this condition, you should replace the battery as soon 

as possible to ensure accurate CO readings.