User's Guide

POLI User’s Guide

6. Calibration and Test

6.1 Manual Alarm Test

Under normal operation mode and non-alarm conditions, the buzzer (audible alarm),

vibration, visible alarms, and backlight can all be tested anytime by pressing [+/OK]. If

any alarm does not respond, check the alarm settings to make sure all alarms are enabled

(LED, Buzzer, Vibrator under Config mode/Alarm/Alarm Device should be ‘all

Enabled’). If any alarms are enabled but not functional, the instrument should not be

used. Contact mPower’s technical support.

6.2 Bump Testing and Calibration

mPower recommends that a bump test be conducted periodically on the POLI. The

purpose of a bump test is to ensure that the instrument’s sensors respond to gas and all

the alarms are enabled and functional.

• The POLI multi-gas detector must be calibrated if it does not pass a bump test, or

at least once every 180 days, depending on use and sensor exposure to poisons and

contaminants.

• Calibration intervals and bump test procedures may vary due to national and local

legislations or regulations.

A bump test can be performed manually. When a bump test is done manually, the

instrument makes a pass/fail decision based on sensor performance, but the user still has

the responsibility to make sure all the alarms are enabled and functional.

6.2.1 Bump (Functional) Testing

The same gas is used for a bump test as for calibration. A constant-flow regulator

producing 0.5 to 1.0 liters per minute should be used.

Pumped models require a T calibration tube, as illustrated below.