Teledyne manual Installation, Model 7300A, Range, Voltage, Current mA, Application

2 Installation Model 7300A

6	0.6	13.6
7	0.7	15.2
8	0.8	16.8
9	0.9	18.4
10	1.0	20.0

To provide an indication of the range, the Range ID analog outputs are used. They generate a steady preset voltage (or current when using the current outputs) to represent a particular range. Table 2-4 gives the range ID output for each analysis range.

Table 2-4: Analog Range ID Output—Example

Range	Voltage (V)	Current (mA)	Application
Range 1	0.25	8	90-100% CO/N2
Range 2	0.50	12	95-100% CO/N2
Range 3	0.75	16	0-100% CO/N2
Range 4 (Cal) 1.00		20	98-100% CO2/N2

2.3.3.2Alarm 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 2-4. 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).

2-6 Teledyne Analytical Instruments