Model 9110T NOx Analyzer

Getting Started

6DIAG MODE

7-8

D

Emitter BUS

 

 

 

 

+DC Power

Digital Ground

On whenever the instrument is in DIAGNOSTIC mode.

SPARE

The emitters of the transistors on pins 1 to 8 are bussed together.

SPARE

+ 5 VDC, 300 mA source maximum

The ground level from the analyzer’s internal DC power supplies. This connection should be used as the ground return when +5VDC power is used.

3.3.1.6. Connecting the Control Inputs

The analyzer is equipped with three digital control inputs that can be used to remotely activate the zero and span calibration modes (see Section 9.1.2.4). Access to these inputs is provided via a 10-pin connector labeled CONTROL IN on the analyzer’s rear panel.

There are two methods for energizing the Control Inputs. The internal +5V available from the pin labeled “+” is the most convenient method however, to ensure that these inputs are truly isolated; a separate external 5 VDC power supply should be used.

CONTROL IN

A

B C D E F

 

U +

 

ZERO

SPAN

 

 

 

 

 

 

 

 

 

 

 

 

Local Power Connections

CONTROL IN

A

B C D E F

 

U +

 

ZERO

SPAN

 

 

- 5 VDC Power

+

Supply

 

External Power Connections

Figure 3-11: Energizing the 9110T Control Inputs

Table 3-7: Control Input Pin Assignments

Input #

Status

Definition

 

AREMOTE

ZERO CAL

BREMOTE

SPAN CAL

C, D, E

 

Spare

 

 

 

& F

 

 

 

 

 

ON Condition

The Analyzer is placed in Zero Calibration mode. The mode field of the display will read ZERO CAL R.

The Analyzer is placed in Lo Span Calibration mode. The mode field of the display will read SPAN CAL R.

Teledyne Analytical Instruments

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Teledyne 9110T instruction manual Connecting the Control Inputs, Input #, On Condition, Diag Mode, Remote Zero CAL Span CAL