Teledyne T200, Руководство по эксплуатации, Страница: 37 / 425

Teledyne API
– T200 NO/NO
2
/NO
X
Analyzer Operation Manual Getting Started
35
ANALOG OUT
A1 A2 A3 A4
+ - + - + - + -
Figure 3-8: Analog Output Connector
Table 3-5: Analog Output Pin Assignments
PIN ANALOG OUTPUT SIGNAL
STANDARD
VOLTAGE OUTPUT
CURRENT
LOOP OPTION
1
A1
NO
x
Concentration
V Out I Out +
2 Ground I Out -
3
A2
NO Concentration
V Out I Out +
4 Ground I Out -
3
A3
NO
2
Concentration
V Out I Out +
4 Ground I Out -
7
A4
1
TEST CHANNEL
V Out Not Available
8 Ground Not Available
To change the settings for the analog output channels, see Section 5.9.2.
3.3.1.4. CURRENT LOOP ANALOG OUTPUTS (OPTION 41) SETUP
If your analyzer had this option installed at the factory, there are no further connectons
to be made. Otherwise, it can be installed as a retrofit for each of the analog outputs.
This option converts the DC voltage analog output to a current signal with 0-20 mA
output current, which can be scaled to any set of limits within that 0-20 mA range.
However, most current loop applications call for either 2-20 mA or 4-20 mA range. All
current loop outputs have a +5% over-range. Ranges with the lower limit set to more
than 1 mA (e.g., 2-20 or 4-20 mA) also have a -5% under-range.
Figure 3-9 provides installation instructions and illustrates a sample configuration of one
current output combined with two voltage outputs . Next are instructions for converting
current loop analog outputs to standard 0-to-5 VDC outputs. To calibrate or adjust these
outputs see Section 5.9.3.7.
CAUTION
– AVOID INVALIDATING WARRANTY
Servicing or handling of circuit components requires electrostatic discharge
protection, i.e. ESD grounding straps, mats and containers. Failure to use ESD
protection when working with electronic assemblies will void the instrument
warranty. For information on preventing ESD damage, refer to the manual,
Fundamentals of ESD, PN 04786, which can be downloaded from our website at
http://www.teledyne-api.com under Help Center > Product Manuals in the Special
Manuals section.
06858E DCN7057