Fairbanks 2800 Series Intrinsically Safe Instrument - Manual (Page 12)

Section 1: General Information
01/12 12 50647 Rev. 9
1.3. ACCESSORIES, CONTINUED
1.3.6. ACCESSORY 2846 BATTERY CHARGER 230VAC ( 31466 )
FOR ACCESSORY 2830, CONTINUED
The following chart outlines basic information for both models of battery chargers.
INPUT VOLTAGE

2845 – 120 VAC, 60 Hz – Standard style plug

2846 – 230 VAC, 50/60 Hz
BATTERY OUTPUT
VOLTAGE
7.0 VDC +/- 0.2 VDC at the end of charge cycle with battery
connected.
LEADS
 Output leads 18 AWG, approximately three feet (3’).
 Extended power cord up to six feet (6’).
STATUS L.E.D. Brightness sufficient to discern the charge status under general
office environment lighting.
CHARGING TIME
 Sixteen (16) hours maximum for undamaged chargeable battery
(electrolyte not depleted).
 Initial unloaded output voltage of 5.0 VDC.
 Do not recharge a battery with a voltage below 4.0 VDC.
OPERATING
TEMPERATURE RANGE
0°C to +38°C (+32°F to +100°F).
1.3.7. ACCESSORY 2850 SAFE AREA RELAY SETPOINT
INTERFACE ( 20570 )
 The setpoint accessory is service programmable for up to eight (8) setpoints.
 These setpoints may be configured to one of five different modes of operation.
 Enclosure: NEMA 4. Fiberglass
C A U T I O N
Battery surfaces get very HOT during recharging.