Precision Digital PD662 - Manual (Page 7)

PD662 Loop-Powered Meter Instruction Manual
7
Input
ACCURACY ±1 count
FUNCTION Linear (2 to 32 points) or square root
TEMPERATURE
DRIFT
50 PPM/ °C from -40 to 85°C ambient
DECIMAL POINT User selectable decimal point
MINIMUM SPAN
Input 1 & Input 2: 0.40 mA
CALIBRATION
RANGE An Error message will appear if input 1 and input 2 signals
are too close together.
Input
Range
Minimum Span
Input 1 & Input 2
4-20 mA 0.40 mA
MAXIMUM
VOLTAGE DROP Without Backlight With Backlight
1.7 VDC @ 20 mA 3.7 VDC @ 20 mA
EQUIVALENT
RESISTANCE 85 Ω @ 20 mA 185 Ω @ 20 mA
INPUT
OVERLOAD Over current protection to 2 A max.
Heater
POWER 24 VDC, 11 W max.
REQUIRED
SWITCH & FUSE A CSA Approved fuse rated min 30 VDC, 1 A, T and a readily
accessible switch or a circuit breaker shall be provided to
facilitate the disconnection of power to the heater.
OPERATION
METHOD On/Off control with an internal temperature sensor. Heater is
on only when necessary due to external temperatures.
TEMPERATURE
CUTOFF Internal 104°C thermal cutoff for over temperature protection.
ENVIRONMENTAL
(with Heater) Operating temperature for CSA certification: -55 to 75°C
Functional temperature range: -55 to 85°C
Storage temperature range: -40 to 85°C
Relative humidity: 0 to 90% non-condensing