MKS Baratron 622D, Руководство пользователя

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Electrical Information Chapter Two: Installation
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Electrical Information
The Types 622B, 623H, and 626D transducers require an external power source capable of
supplying the voltages stated in Table 7. Noise and ripple should be less than 20 mV p-p. You
may use any readout device which has input capabilities of less than 0 to greater than 10 VDC,
and impedance greater than 10K ohms.
Note
The ground of any external power supply and readout should be the same
as the transducer ground (chassis ground) to minimize any possible
ground loops which can affect the performance and stability of the
system.
Input Required Types 622D &
626B
Type 623H
At Startup
±15 VDC (±5%) @
35 mA ±15 VDC (±5%) @
75 mA
After 1 hour of
operation at 25° C ±15 VDC (±5%) @
35 mA ±15 VDC (±5%) @
75 mA
Table 7: Required Inputs for Types 622B, 623H, and 626D Transducers
Figure 7: Power, Signal, and Chassis Grounding Scheme
Connectors
Readout
Power
Supply
+
-
0 - 10 V Pressure Output
Signal Common
+ 15 V
- 15 V
Power Common
+ 15V
10K
1 F
Chassis
Ground
Sensor
Port
The absolute value of the potential difference between
the chassis ground and signal common/power ground
should not exceed 14 Volts.
NOTE: For best results, use a readout with fully
differential inputs.
Multiple Ground
Tie-Point