Curtis Computer 833 manual

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Table of contents for the manual

  • Page 1

    MODEL 833 “FUEL ” GAGE/HOUR METER W/“PUSH- Read Instructions Carefully ! ® ![...]

  • Page 2

    Saf ety Instructions This instrument was manuf actured and tested according to the applicable technical standards . It complies with all the safety regulations as shipped from the f actory . Installation and star tup must be performed by skilled personnel. F ailure to install and operate the unit in accordance with these instructions may result in [...]

  • Page 3

    ! T ABLE OF CONTENTS P age 1. Model Encodement 2 2. T echnical Specifications 2.1 Electrical 4 2.2 Mechanical 5 2.3 Environmental 6 3. Installation 7 4. Operation 14 5. T roubleshooting 16 6. Maintenance 17[...]

  • Page 4

    2 1. MODEL ENCODEMENT 833RB vvvv w V oltage 0024 Reset lev el B = 2.09 VPC[...]

  • Page 5

    3 xy zzzz ! Discharge profile C = Adjustable (See T able 3.) Output J = N.C. holding rela y Contact rating = 3 Amps when continuously closed, 1 Amp when opening 316O O = Cur tis logo[...]

  • Page 6

    4 2. TECHNICAL SPECIFICA TIONS 2.1 Electrical Operating Range ± 25% of nominal voltage Operating Current V oltage (volts) Nominal Current (mA) Maximum Current (mA) 24 18 28 Rela y Contact Ratings V oltage: 200 VDC (max) Current: 1 ADC (max) (3 ADC max when continuously closed) Po we r: 50 W (max) ![...]

  • Page 7

    2.2 Mechanical Displa y Battery state-of-charge: 10-bar , tr i-color LED Hour Meter: 6-digit LCD , 5mm high Resolution Hour Meter 99,999.9 Hours Hardware Kit Mounting brack et, thumbnuts or M4 He x nuts (2), lock w ashers (2), mating connector Molex No . 39-01-2085, w/pins No . 39-00-0039, no connectors in bulk shipments . P anel Cutout 52mm, 2 1 /[...]

  • Page 8

    6 2.3 En vironmental T emperature Operating: - 4 0 ° C t o + 65 ° C (Standard Mode) -10° C to +65° C (Push-to-read Mode) Storage: - 5 0 ° C t o + 9 0 ° C Humidity 95% RH (Non Condensing) at 38°C Shock & Vibration 2.2 G, 20-200 Hz; 20 minute period; X,Y ,Z, 13 cycles each Enclosure IP65 (face) ![...]

  • Page 9

    7 ! 3. INST ALLA TION The Model 833 Installation Kit includes a pre-assembled mating connector with 5” ter minated wires. Ask for Curtis Part Number 15369002. The Model 833 fits into a dash-panel cutout measuring 2 1 / 16 ” (52 mm). Te r minal Assignment (see diagr am on page 13) Pin 8 = Battery + Pin 8 to battery +[...]

  • Page 10

    8 ! Pin 5 = Battery – Connect to battery ground as close to batter y as possible . Pin 2 = Keys witch The ke yswitch turns on and off the LED displa y of the battery discharge indicator. Monitoring of the batter y continues when Pin 2 is turned off and the display is not lit. The hour meter display is unaff ected by Pin 2, although it cannot accu[...]

  • Page 11

    9 Pin 3 = Relay (+) Pin 3 connects in series with the lift coil circuit (or the circuit to be switched at empty). For holding rela y (J), Pin 3 must be electrically closer to batter y + than Pin 4 Pin 4 = Relay (–) Pin 4 also connects in series with the circuit to be s witched at empty .[...]

  • Page 12

    Ta b le 1. Hour Meter Contr ol Lines & Impedance Specifications Model Lo w V olt a ge High V oltage Min. Impedance Maximum Minim um HRM+ HRM- 24 VDC 5.0 VDC 15.0 VDC 90 k Ω 30 k Ω Ta b le 2. Hour Meter Contr ol Logic Key HRM HRM HRM Hour Icon s witch (+) (+) (+) meter Off x x x Display only Steady On V H xx On Flashing On x V H xO nF lashin[...]

  • Page 13

    ! 11 NO TE : Fuses and Wires Regulations may require that the Model 833 be fused. If installing a fuse, use a 10A fuse wired with 1.5mm or equivalent wire . The voltage drop across the fuse , its holder , and connectors must be less than 1% of the nominal system voltage . Discharge Adjustments Ta b le 3 lists the voltages per cell under load that c[...]

  • Page 14

    12 CUR TIS Model 833 Rear Vie w ![...]

  • Page 15

    13 Connections f or T ypical Model 833 Application V ehicle system voltage is the higher of the two oper ating vo ltages of a dual voltage unit. Hour meter measures “ke yswitch on” time. ![...]

  • Page 16

    14 4. OPERA TION Displa y The Cur tis Model 833 combines in one instrument a completely solid state LED battery state-of-charge indicator , an LCD hour meter , and lift lockout. Only when battery is proper ly charged is right most LED (1) lit. As battery’s state-of-charge decreases , successive LEDs light up , one at a time. 2nd from left LED fla[...]

  • Page 17

    15 Push-to-read When the front button is depressed, the LCD will displa y the hour meter reading for 6 seconds min. The hour meter will not accumulate time during this operation. Reset type/le v el (after or during recharge) CTR = Charge T racking Reset If the gage is connected to the battery dur ing recharge, the gage will track the battery charge[...]

  • Page 18

    16 5. T r oubleshooting The follo wing checklist should help y ou to troubleshoot an y problems with the instrument. Problem P ossible Causes No display T er minals not connected or improper voltage Stays at FULL Instrument voltage does not match battery voltage, B+ connected to the wrong terminal Will not reset Instrument voltage does not match ba[...]

  • Page 19

    17 6. Maintenance Model 833 Series is not ser viceable in the field. Units returned to the factory within the warranty period (see inside backco ver) will be replaced without charge.[...]

  • Page 20

    Guarantee - Cur tis Instruments’ products and/or components are guaranteed against def ects in workmanship and material f or a period of two y ears, or as defined in the individual product literature, from date of shipment from our f actory , when applied in a proper application within specified ratings. This guarantee is limited to repair or rep[...]

  • Page 21

    CURTIS INSTRUMENTS, INC. 200 Kisco A venue, Mt. Kisco, NY 10549 T el. (914) 666-2971 • FAX (914) 666-2188 53024 REV A 7/01[...]