TELEVAC MX2A, Инструкция по эксплуатации

Страница: 12 / 18

Instruction Manual MX2A Active Thermocouple Gauge
ˆ
To access set point 1 high, set point 2 low, or set point 2 high, press DOWN from the initial set
point screen.
ˆ
When the correct set point is selected, press ENT to unlock the set point adjustment screen.
ˆ
Press UP and DOWN to change the value.
ˆ
When the desired reading is reached, press ENT to save and lock the change.
The MX2A contains two set points for the convenience of the operator. Set point 1 is an N-Channel
60 V MOSFET open collector. It has a maximum current rating of 1 A. The data sheet can be found
at
www.vishay.com/docs/69958/si2308bd.pdf . Set point 2 is a relay with a maximum switching
voltage of 220 V DC (250 V AC) and a maximum switching current of 2 A. The data sheet can be found
at
www.te.com/catalog/pn/en/1393788-3 .
2.5.4 Units
To reach the units screen:
ˆ
Navigate to the measurement screen.
ˆ
Press SEL three times.
ˆ
Press ENT to unlock the units screen.
ˆ
Press UP and DOWN to navigate between units.
ˆ
When the desired unit is reached, press ENT to save and lock the change.
Depending on the process or the region, the desired units for the MX2A may vary. To accommodate
this need, the MX2A includes a unit adjustment feature. The MX2A can be set to display the units in
Torr, kPa, or mbar.
2.5.5 Output
To reach the output screen:
ˆ
Navigate to the measurement screen.
ˆ
Press SEL four times.
ˆ
Press UP and DOWN to navigate between the analog output and RS-485 panes.
ˆ
When the desired field is present, press ENT to enter the heading.
The MX2A features a number of analog outputs and RS-485 digital output and input.
A . Analog Output
To toggle the analog output type:
ˆ
Navigate to the analog output screen.
ˆ
Press ENT to unlock the screen.
ˆ
Press UP or DOWN to set the desired output type.
ˆ
When the desired analog output is reached, press ENT to save and lock the change.
The types of analog output are listed below. For more information on the types of output, please
see the heading in this manual labeled Analog Output.
(a) Logarithmic
(b) Linear by Decade
(c) Non-linear
email: sales@frederickscompany.com tel: +1 215 947 2500 web: frederickscompany.com mx2a_im rev F 11 of 17