Mains Connection; Alarm Relays; Analogue Output - B-I Inductrial BI-SM2004 Manual

B-I INDUSTRIAL CO., LTD.
SMOKE DENSITY INDICATOR
4-1-2 Main Connection
The unit is normally supplied for 220V, 60Hz operation and, optionally, 110V, 60 Hz. For
optimum performance the mains supply to the BI-SM2004 should never be interrupted.

4-1-3 Alarm Relays

Alarm relays are rated at 5 Amps 250 V.A.C. non-inductive load and provide non-committed
change-over contacts for external circuits. These circuits may be used for alarm or control
function and 5 A fuses must be provided in the customer's switchboard.

4-1-4 Analogue Output

The 4 to 20mA output corresponds to an obscuration span of 0 to 100% obscuration
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