Teledyne Vacuum Gauge 2002 Manuel d'utilisateur télécharger pdf (Page 37)

Model 2002 page 37

4-20 mA Interface Option Board

SECTION 8

The Relay option board in the Model 2002 operates off of the setpoints defined by the user and

programed into the Model 2002 microprocessor. For more information about configuring these

setpoints refer to Section 3 of this manual.

The 4-20 mA interface board is available as an option for the Model 2002. This board provides

dual current channels linearly proportional to the HPM 2002’s pressure reading. Please note that

use of the Model 2002 with this option requires a CPU with firmware for version 1.6 or later.

8.1 4-20 mA Interference Connector Pin Assignmets

Pin Connection

1 Internal loop power out (+) channel 1.

3 Loop in (-) channel 1.

8 Internal loop power out (+) channel 2.

7 Loop in (-) channel 2.

The 4-20 mA board can only be operated with internal loop power.

A schematic (Figure 8.2) is attached to show the proper method to wire into a loop.

Symptom:Symptom:

Symptom: Fixed display, regardless of pressure

Action:Action:

Action: 1. Check sensor for contamination.

Figure 8.1

Model 2002

Rear Panel Detail

LOW SETPOINT OPTION BOARD HIGH SETPOINT

RELAY CONNECTOR (MALE) RELAY

TRANSDUCER CONN. STANDARD

(FEMALE) I/O CONNECTOR

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 53 54

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Teledyne Vacuum Gauge 2002 Manuel d'utilisateur Page 37