Precision-digital PD662 Manual do Utilizador descarregar pdf (Página 7)

PD662 Loop-Powered Meter Instruction Manual

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

1 2 3 4 5 6 7 8 9 10 11 12 ... 31 32

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