Technical specifications:
Display temperature range (operational): -20 to +80 degrees C
Supply voltage: +8 to +18V. +24/28V with optional pre regulator.
Supply current: 25mA/45mA (backlight off/on)
Thermocouples: K-type
Measurement range EGT: 0 to 700 degrees C (digital to 1200 degrees C)
Measurement range CHT: 0 to 300 degrees C (digital to 1200 degrees C)
Alarm level EGT: 650 degrees C
Alarm level CHT: 250 degrees C
Technology: Fully cold junction compensated using precision internal temperature reference.
Measurement accuracy: +/- 5 degrees typical over full temperature range if used with
Stratomaster EGT and CHT probes.
Measurement interval: 2 seconds per channel.
Inputs: Differential, can use grounded and isolated probes.
Common mode voltage range: -2V to +3V
Alarm contact:
Maximum permissible current through alarm contacts: 500mA.
Maximum permissible voltage over alarm contacts: 50V.
Typical load for alarm contacts: 12V/1W lamp. Be aware of low resistance of higher wattage
lamps. A cold filament resistance of 20 ohms or less will damage the internal alarm relay contact.
Rev counter:
Crystal based accuracy, resolution 20 RPM typical, dependent on number of pulses per revolution
from engine and "Calib" setup. Range 0-9999 revs.
Minimum signal for stable display: 2Vpp.
Fully A/C coupled, maximum v/- 40V.
RF noise filter plus Schmidt trigger based input.
Note: It is essential that a single wire be connected from the reference terminal of the
instrument to the engine block (brown wire on Rotax 503 DCDI engines). This wire must
not be used to share currents with other electrical users as this will affect accuracy of
indicated temperatures.
Warranty:
MGL avionics warrants their products for a period of one year from date of purchase against faulty
workmanship. Warranty is limited to the replacement of faulty components and includes the cost
of labor. Shipping costs are for the account of the purchaser.
Note for operation on supplies with inductive loads:
Any operation of electronic instrumentation on power supplies that are subject to high voltages
caused by operation of inductive loads (starter motors, solenoids, relays) are required to be fitted
with suitable protection.
All Smart Singles are guaranteed to withstand temporary over voltage up to 40V without additional
protection. We recommend that measures are taken to prevent voltage transients in excess of
this limit.
MGL Avionics recommends the fitment of a fuse in line with a 33V transorb (available from MGL
Avionics at low cost) to protect electronic instruments, radios and intercom systems. Only one
such arrangement is required for a cluster of instruments.
Please note that product warranty excludes damages caused by unprotected, unsuitable or
incorrectly wired electrical supplies.
