Teledyne 3000PAEU - General purpose percent oxygen analyzer User Manual

Page 28

3 Installation

Model 3000PA

3-6

Teledyne Analytical Instruments

4–20 mA dc % Range: (Optional) Current increases linearly with increasing

oxygen, from 4 mA at 0 % to 20 mA at full scale.
(Full scale = 100% of range.)

4–20 mA dc Range ID: (Optional) 8 mA = Low Range, 12 mA = Medium

Range, 16 mA = High Range, 20 mA = Air Cal
Range.

Table 3-1: Analog Output Connections

Pin

Function

(Optional) + Range ID, 4-20 mA, floating

(Optional) – Range ID, 4-20 mA, floating

(Optional) + % Range, 4-20 mA, floating

(Optional) – % Range, 4-20 mA, floating

+ Range ID, 0-1 V dc

– Range ID, 0-1 V dc, negative ground

+ % Range, 0-1 V dc

– % Range, 0-1 V dc, negative ground

Alarm Relays: The nine alarm-circuit connector pins connect to the

internal alarm relay contacts. Each set of three pins provides one set of Form
C relay contacts. Each relay has both normally open and normally closed
contact connections. The contact connections are shown in Table 3-2. They
are capable of switching up to 3 amperes at 250 V ac into a resistive load.
The connectors are:

Threshold Alarm 1:

• Can be configured as high (actuates when concen-

tration is above threshold), or low (actuates when
concentration is below threshold).
• Can be configured as failsafe or nonfailsafe.
• Can be configured as latching or nonlatching.
• Can be configured out (defeated).

Threshold Alarm 2:

• Can be configured as high (actuates when concen-

tration is above threshold), or low (actuates when
concentration is below threshold).

• Can be configured as failsafe or nonfailsafe.

• Can be configured as latching or nonlatching.
• Can be configured out (defeated).

System Alarm:

Actuates when DC power supplied to circuits is

unacceptable in one or more parameters. Permanently