SMITHS CLASSIC GAUGES GENERAL SPECIFICATIONS
Operating temp range -20°C to +70°C
Speedometers and Rev Counters, available to fit 80mm and 100mm diameter apertures, minor gauges fit 52mm apertures
Speedometers, electronic specification
Negative earth vehicles only, 12 volts operation, calibration fully programmable up to 125,000 pulses per mile or kilometre.
Factory calibration 8380 pulses per mile or kilometre
Power consumption less than 100mA, compatible with all types of electronic senders.
Indicated speed tolerance 0% to +5%, Odometer tolerance +/-2%, Odometer - up to 999999 miles/km, Trip up to 999.9 miles/km
Tachometers Calibration: Petrol engines 1 to 12 cylinders
Diesel engines alternator driven from 8 to 29 pulses per engine rev
Red 'max hand' pointer, adjustable via screw positioned in centre of instrument window.
Negative earth vehicles only, 12 volts operation, Operating power consumption less than 75mA, Tolerance +/-3% of full scale
Input signal options conventional ignition coil, ecu output (square wave and open-collector), camshaft senders, alternator 'W' terminal, etc.
Mechanical: - Oil pressure, 7 bar full scale, 270 degree sweep. Connection - 1/8" gas pip end
Water temp, 40 to 150 deg C, 'K' type bulb, 3/8" BSP female thread, supplied with 5/8"UNF adaptor, 2 metre capillary length.
Oil temp: 40 to 150 deg C, 'K' type bulb, 3/8" BSP female thread, supplied with 5/8"UNF adaptor, 2 metre capillary length.
Dual Oil pressure/water temp: 100psi/90-230 deg F, 1/8" gas pip end, and 'K' bulb
Electrical: Ammeter, directly driven with full current. 2 off 9.5mm spade terminals. +/-30 amps or +/-60amps scales
Voltmeter, connected to ground and switched ignition, available with plain and coloured sector dials
Clock: remote and front reset switch, connected to ground and permanent battery
Oil Pressure, 7 bar and 10 bar full scale, 10/180 ohms.
Fuel Contents: 10/180 ohms
Coolant Temp, 40 to 120 deg C, European low resistance characteristic
Transmission Oil Temp, 50 to 150 deg C, European high resistance characteristic
All senders available to suit the above electrical gauges, Fuel sender, top and side mount, 6 hole. Coolant/oil temp sender, earth return, 1/8"X 27NPT, Oil/Transmission oil temp sender, earth return, 1/8"X 27NPT. Oil pressure sender, resistive, earth return, 1/8"NPT, 7 or 10 bar full-scale