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参数资料
| 型号： | 940 |
| 英文描述： | Converter |
| 中文描述： | 转换器 |
| 文件页数： | 3/6页 |
| 文件大小： | 223K |
| 代理商： | 940 |
A
3
C
1
Models 940 and 945 DC Transmitters
http://www.calex.com
2401 Stanwell Drive
Concord, CA 94520-4841
(510) 687-4411 Fax (510) 687-3333
Mounting Kit
The MK940 mounting kit is an optional printed circuit board
that provides the necessary potentiometers and a connector
for a complete turnkey system.
The 940/MK940, when ordered as a combination, is shipped
from the factory configured as a 0 to +10 Volt input, 4 to 20mA
output, isolated transmitter. The 945/MK940, when ordered
as a combination, is shipped from the factory configured as
a 0 to 50 mV input, 4 to 20 mA output, isolated transmitter.
Note in the schematic, Figure 1, that C1, R1, R2, R3, and R5
are included on the board. The other designated components
are user supplied for other applications. Also note that R8
through R11 are not connected to the rest of the circuit. For
24 VDC operation, add a “-24” to the MK940, i.e. 945/MK940-
24
Figure 2 shows the outline of the MK940 card and the lettered
pin assignments. The card includes a Model 015 connector
with edge guides and has eyelets for soldering wires. The
components described as jumpers are wire connections
although they have a ceramic body the size of a W resistor.
FIGURE 2.
MK940 Card
FIGURE 1.
MK940 Schematic
NOTE:
C1, R1, R2, R3, R5 ARE INCLUDED.
ALL OTHER COMPONENTS ARE USER
SUPPLIED FOR SPECIFIC APPLICATIONS.
Model 940/945
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