 Curtis Model 803 combines in one instrument a completely solid state battery discharge indicator, an LCD hour meter and lift lockout, housed in a 52mm case.
Curtis Model 803 combines in one instrument a completely solid state battery discharge indicator, an LCD hour meter and lift lockout, housed in a 52mm case.
Void of moving parts, this combination instrument is exceptionally reliable even in severe operating environments.
Model 803 is a combination gauge ideally suited for electrically powered vehicles.
 
 
	{tab=Features}
'Fuel' Gauge Features
- Multicolor 10-bar LED displays state of charge (5 green, 3 yellow, 2 red LEDs).
- Flashing red LED signals "energy reserve" alarm at 70% discharged.
- Double flashing red LEDs signal "empty" alarm at 80% discharged.
- Normally closed relay opens at 80% discharge for lift lockout. This unique holding relay will only lock out at the end of a lift cycle.
- Recognizes improperly charged battery.
- Keyswitch activated LED display (Fuel gauge electronics are energized as long as they remain connected to the battery).
- Wide range adjustable discharge profile.
- Dual reset methods in each gauge: Open Circuit Reset for vehicles that exchange batteries and Charge Tracking Reset for vehicles whose batteries remain connected to the gauge during recharge.
Hour Meter Features
- Monitors use-time throughout the equipment's lifespan.
- Records and displays up to 99,999.9 hours on its LCD, rolls over and continues to count and display.
- Hour meter LCD remains on as long as battery is connected.
- Stores latest total in EEPROM nonvolatile memory, without need of power.
- Operates and displays in temperatures from –40˚C to +65˚C under harsh conditions of vibration, shock, moisture and dust.
System Voltages
- Available in single voltages from 12 VDC to 80 VDC, or in dual voltage of 24/36, 36/48, 24/48 or 72/80 VDC.
- Operating range is ± 25% of nominal voltage.
{tab=Specifications}
- Hour meter accuracy: +0.1%
- Operating Temperature: –40°C to +65°C
- Shock & Vibration: Meets SAE J 1378
- Humidity: 95% RH (non-condensing) at +38°C
- LCD Character Height: 5 mm
- Mating Connector: Molex 8 pin, 39-01-2085
- Discharge Range: Empty from 1.57 volts/cell to1.93 volts/cell.
- Reset Levels: Open circuit reset (OCR)at 2.09 volts/cell.
- Charge Tracking Reset (CTR) tracks battery recharge at 2.35 volts/cell full and 2.10 volts/cell empty.
Model Number Description: 
| 803 RB | 2448 | B | C | J | 
| Case Style | Voltage | Reset Type/Level | Discharge Profile | Output | 
| RB=Round (52mm) w/black bezel
 | 12 1224
 2436
 2448
 3648
 7280
 | B=CTR/OCR (3zzO) =HVR/OCR (1zzO/2zzO)
 where
 
OCR=2.09vpcHVR=2.35vpcCTR=
2.35 vpc full,2.10 vpc empty | C=Adjustable 1.57vpc to
 1.93vpc at empty
 | J=N.C. holding relay Contact rating=3 Amps
 when continuously closed,
 1 Amp when opening.
 K=N.C. relay
 Y=N.O. relay
 contact rating=1 Amp
 | 
{tab=Dimensions}

{/tabs}