Instruction Manual pH 5+, pH 6+, Ion 6+-5-2.4 Inserting New BatteriesThe battery compartment is found at the back of instrument. To open the batterycompartment, push in the direction of arrow and lift up the cover. Note the polarity ofbattery before inserting into position. After replacement, place cover back and pressdown until it locks.2.5 Battery ReplacementThe “LO” annunciator of the LCD alerts you when battery power is running low.Caution: Power off the meter before changing battery.2.6 Connecting the Electrode and Temperature SensorTo connect the electrode into meter, align the BNC connector slots with the posts ofmeter’s socket and rotate connector clockwise until it locks. Do not force whenconnecting. To remove, simply rotate the connector in counter-clockwise direction until itunlocks, and slide the connector off the socket.