Dynalco LMD-120A Panel Meter Instrukcja Użytkownika Pobierz pdf

LMD-120A

Signal Powered Digital Indicator

Installation and Calibration

The LMD-120A is powered from the 4-20 mA current that serves as the signal into

terminals 1 (+) and 2 (–). Do not make any other power connections to this unit.

This device can be connected as a simple current meter in any 4-20 mA current

loop in series with transmitters, controllers, and other 4-20 mA monitors.

Maximum loop burden is 100 ohms at 20 mA.

Calibration:

1. With 4 mA input, adjust ZERO ADJUST for desired reading at 4 mA.

2. With 20 mA input, adjust SPAN ADJUST for desired reading at 20 mA.

3. Repeat steps 1 through 2. Recalibrate as needed.

Note: With switch 4 off, ZERO ADJUST permits any initial reading from

–1000 to +1000; SPAN ADJUST permits a span adjust from 100 to 2000 counts.

With switch 4 on, the zero is adjustable from –10,000 to +10,000; the span is

adjustable from 1000 to 20,000 (fixed zero).

Intrinsic Safety: This instrument is CSA certified as intrinsically safe for Class I,

Divisions 1 and 2, Groups A, B, C, and D hazardous locations, if the signal feeding

the unit is derived from a safe source or through a safety barrier meeting entity

parameters of Vmax = 40 volts, Imax = 200 mA, Ci = 0, Li = 0.

1 2

Podsumowanie treści

Strona 1 - Calibration:

LMD-120ASignal Powered Digital IndicatorInstallation and CalibrationThe LMD-120A is powered from the 4-20 mA current that serves as the signal intoter

Strona 2 - Ft. Lauderdale, FL 33309 USA

LMD-120A — View with the plug removedCalibration controls under plug (rear)Switches 1, 2, and3 control decimalpoints as shown.Switch 4 adds a dummyzer

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Dynalco LMD-120A Panel Meter Instrukcja Użytkownika

Przeglądaj online lub pobierz Instrukcja Użytkownika dla Urządzenia pomiarowe Dynalco LMD-120A Panel Meter. Dynalco LMD-120A Panel Meter User Manual Instrukcja obsługi

Podsumowanie treści

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