Halma ALICAT SCIENTIFIC M Series, Руководство по эксплуатации

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Troubleshooting
January 2023 • Rev. 0 • Standard Devices User Manual
37
Mass Flow Devices
Issue: Can I use my mass flow device with other
gases?
Action: Yes mass flow devices are designed to work with
many different gases. Gas Select™ includes up to
130 preloaded gases and gas mixes( page 23 ).
You can also define your own mixture using
COMPOSER™ ( page 23 ).
Pressure Readings
Issue: My pressure readings are negative.
Action: If a negative reading is not expected, your device
may need to be tared ( page 12 ). Ensure
pressure is at zero, and tare it.
Issue: My pressure readings jump to zero when
pressures are low.
Action: Your device is equipped with a programmable
zero band that is preset at the factory. Reduce
your deadband threshold by selecting
SETUP
→
Sensor
→
Zero Band
.
Issue: My pressure device disagrees with another
device I have in line.
Action: Pressure devices can normally be compared
against one another provided there are no leaks
between the two devices. Another possibility is
an improper tare error ( page 12 ).
Issue: Can I use my pressure device with other
gases or liquids?
Action: Yes for gases, maybe for liquids. Pressure
devices are designed to operate independent
of the media being used.
One thing to check before changing gases or
liquids is the chemical and material compatibility
of the gas being used with the wetted materials
inside the controller. We also recommend
contac ting suppor t ( page 2 ) before
switching a gas pressure device over to liquid
pressure device as some modification may be
necessary.
Liquid Devices
Issue: Can I use the meter with other liquids?
Action: No. Your flow meter is designed specifically
to work with only one liquid, typically water.
For use with a different liquid, the device will
require recalibration. Please contact us to submit
a service request at alicat.com/service .
Serial Communications
Issue: I can’t communicate to the device when it is
connected to my PC.
Action: 1. Make sure the baud rate your software and
COM port required is the one your flow controller
is using (
MENU
→
SETUP
→
RS-232 Serial or
RS-485 Serial
→
Baud Rate
).
2. Check the unit ID (
MENU
→
SETUP
→
RS-232
Serial or RS-485 Serial
→
Unit ID
) to make
sure you are addressing it properly with your
serial commands.
3. Make sure the COM number matches the one
your software is using to connect to the flow
controller.
4. On the external serial communications device
(computer, PLC, etc.), Be sure that the flow
control (handshaking) settings are set as on
page 29 .
5. Check the pinout of your device to confirm the
connection is on the right pin ( page 39 )
?
Still experiencing issues?
Please contact support. See page 2 .