B AT T E R Y “ F U E L” G A G E
MODEL 900R
FEATURES
•
Multicolored 10-bar (5 green, 3 yellow, 2 red) LED displays
state of charge.
•
The top LED illuminates only when the battery is properly
charged.
•
Double flashing red LEDs signal “empty” alarm at 80%
discharge.
•
Recognizes improperly charged battery.
•
Both fixed and adjustable discharge profiles are available.
•
Easy to install.
SYSTEM VOLTAGES
•
Available in single voltages from 12, 24, 36, 48, 72
DESCRIPTION
The Curtis Model 900R battery “fuel” gauge is inexpensive and
easy to install. It is a single piece package and installs via a
simple 2 wire connection.
and 80 VDC.
SPECIFICATIONS
•
Operating Temperature:
-40 to +80° C
•
Humidity:
95% RH (non-condensing) at 38° C
•
Storage temperature:
-50 to +90° C
•
Vibration:
Meets SAE J1378
•
Shock & Vibration:
Meets SAE J1378
APPLICATION
Model 900R is ideally suited for lead acid battery-powered
vehicles that require a display of state-of-charge only. The H
reset profile is recommended for industrial/recreational vehicles
that remain connected to their batteries during the charge cycle.
The B reset profile is recommended for electric fork lift trucks
and electric vehicles that can be disconnected from or remain
connected to their batteries during the charge cycle. Units so
configured have an undefeatable memory that holds the state of
charge of the battery when disconnected.
www.curtisinstruments.com
MODEL 900R
DIMENSIONS mm
"U" CLAMP FOR .030-.250
PANEL THICKNESS
1/4" MALE QUICK
CONNECT TERMINALS
1
58
(2.30)
MAX
52
(2.05)
MAX
DISCHARGE
ADJUSTMENT
POT, OPTIONAL
1/2
BATTERY
-
+
900
INDICATOR
0
9
(.35)
MAX
46
(1.80)
MAX
I N STA L L AT I O N
CURTIS 900R “Fuel” Gauge positive (+) terminal to battery positive (+) bus; gauge negative (-) terminal to battery negative (-) bus.
MODEL ENCODEMENT
900R
B
24
B
MEMORY/RESET LEVEL
B - with memory, HVR* & OCR**
H - no memory, HVR* only
N
A
OPTION
A = no option
A
O
OEM CODE
O = CURTIS logo
Bezel
B=Black
No B=Stainless
VOLTAGE
12, 24, 36, 48
72, 80 VDC
G
N
W
A
B
DISCHARGE PROFILE
OPTION
Full (v/c)
Empty (v/c)
A = no option
= 1.97
1.75
= 2.04
1.73
= 2.02
1.85
= Adjustable; range of 1.56 to 1.82 v/c at empty
= Light duty adjustable; range of 1.71 to 1.93 v/c at empty
* HVR: High Voltage Reset – Battery is connected to gauge while recharging. The gauge resets to Full when the battery is above the
HVR level for 6 minutes. With B or H, HVR = 2.35v/c.
**OCR: Open Circuit Reset – 2.09 v/c – Only available on units with Memory – Battery is disconnected from gauge while recharging.
The gauge will reset to Full if the reconnected battery is above the OCR level. The gauge will display its stored state-of-charge if
the battery is below this level. With B,, OCR = 2.09 v/c.
W A R R A N T Y
Two year limited warranty from time of delivery.
is a trademark of Curtis Instruments, Inc.
Specifications subject to change without notice
©2009 Curtis Instruments, Inc.
50046 REV D 3/09
PCB Design
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