Met One Instruments GT-526S, Manual

Page: 17 / 28

GT-526S Manual Rev F Page 16
5.7.1. Alarm Analog Output
Along with the two channel alarms mentioned in section 5.7, there is also an alarm level
analog output for each channel. The table below shows the analog output levels for
each alarm. The alarm analog output level is updated at the end of each count cycle.
The analog out is available on the DB-9 Serial connector on the right side of the
instrument. See section 7.1 for pin-out details.
Channel Alarm Type Analog Output
Channel 1 No Alarm 0 V
Channel 1 Hi Alarm 5 V
Channel 2 No Alarm 0 V
Channel 2 Hi Alarm 5 V
5.8. Serial
Configure the serial port settings.
BAUD: 9600
SERIAL: PRINT
Figure 20
– Serial Screen
5.8.1. Baud
Use the Baud Rate selection to set the serial communications baud rate. GT-526S
communicates at baud rates from 300
– 38400.
5.8.2. Serial Output Mode
The Serial setting controls the behavior of the GT-526S serial output. The modes are
RS232, RS485 and Printer. The following table lists the Serial Output settings and
describes their meanings.
Serial
Setting
Description
RS232
RS232/USB communication with CSV style output. Records
automatically transmitted after each sample.
RS485
RS485 communication with CSV style output.
PRINT
RS232 communication with printer style output. Records
automatically transmitted after each sample.
5.9. Set Flow Screen
The GT-526S has a factory calibrated flow rate of 0.1 CFM (2.83 LPM). Use the
following procedure to adjust the flow rate when a periodic flow rate check (Section 8.3)
indicates a flow rate error greater than +/- 5%.