MKS Baratron 631D, Instruction Manual, Page: 31 / 64

Chapter Two: Installation
23
Cable to Connect to the Power Supply
The 631D transducer is powered by a single

15 VDC power supply for both the electronics and
heater. The cable connection to the 631D transducer via the Interface connector is shown in
Figure 2: Top View of the Type 631D Transducer, page 30. Refer to Table 6: Pinout of the
Interface Connector (J1), page 34, for the complete list of pin assignments for the Interface
connector.
Product Location and Requirements

Voltage:

15 VDC (±5%)

Current: 1.0 Amp, maximum for the heater and electronics

Overpressure limits: 45 psia or 120% of sensor Full Scale, whichever is greater

Mount the Type 631D transducer components correctly: refer to Figure 1: Recommended
Orientation of the Type 631D Transducer, page 26, for the recommended orientation of the
sensor

Maintain a solid system ground for proper operation and safety to personnel

Isolate the unit from vibration
Keep the unit free from vibration. The diaphragm may be susceptible to resonance when
there is not enough gas present to dampen the effects of vibration. The 1 Torr Full Scale
units are the most sensitive. Any vibration that
does exist should be isolated from the unit
with vibration isolation mounting and a bellows coupling.

Warm up Time: 2 hours