Teledyne 3190 manual HI Alarm, LO Alarm, Sensor Fail, Parameter Setting

3 Installation Model 3190

Figure 3-2: Contact ID for FAILSAFE Relay Operation
The specific descriptions for each type of alarm are as follows:
HI Alarm	Configured as high alarm (actuates when concentration is
	above threshold). Can be set anywhere within the full
	range of the analyzer (0-9,999 ppm), but must be set
	ABOVE the threshold set for the LO Alarm.
LO Alarm	Configured as low alarm (actuates when concentration is
	below threshold). Can be set anywhere within the full
	range of the analyzer (0-9,999 ppm), but must be set
	BELOW the threshold set for the HI Alarm.
Sensor Fail	Actuates when the output of the Micro-Fuel Cell sensor
	falls below the acceptable level.

RS-232 Port: The digital signal output is a standard RS-232 serial communications port used to connect the analyzer to a modem or other digital device. Only the output mode is implemented in this instrument. The data is oxygen concentration and range information in serial digital form.

The RS-232 protocol allows some flexibility in implementation in the choice of values for certain parameters. Table 3-1 lists the RS-232 values required by the 3190 implementation.

Table 3-1: Required RS-232 Options

Parameter	Setting
Baud	2400
Byte	8 bits
Parity	none
Stop Bits	1
Message Rate	2 per second

External Probe: The receptacle for the analysis unit cable is located in the lower left-hand corner of the rear panel. The 6-pin Mini-Fit™ connector

3-6 Teledyne Analytical Instruments