MKS Baratron 631D, Instruction Manual, Page: 57 / 64

Appendix A: Product Specifications
49
Appendix A: Product Specifications
Physical Specifications
Dimensions
3 3.15” diameter, 4.55” length, maximum
(8.00 cm diameter, 11.55 cm length)
Fittings ½” (12.7 mm) tubulation, Swagelok 8-VCR (female),
NW-16-KF, 1½” Tri-Clover, 2” Tri-Clover
Full Scale Ranges 1, 2, 10, 30, 100, 1000 mmHg (Torr)
For other ranges, consult factory
Heater Unit Relay
Initial State (during operation)
Contact Rating
Energized
1 Amp @ 24 VDC
Input Required
Dual power supply
±15 VDC ±5% @ 1.0 Amp (max.)
Material Exposed to Gases (P
X
port) Inconel
®
and Incoloy
®
nickel alloys. Some fitting
options may be made from 300-series stainless steel.
Number of Decades Covered 4
Optional Trip Point Relay Setting Output 0 to 10 VDC (corresponding to 0 to 100% F.S.) for each
trip point
Optional Trip Point Relay Specifications
Two (2) Form C solid-state relays (SPDT contact),
200mA max. @ 30 VDC, UL1577 approval. Relay
Contact ON resistance: 15 Ohms max, CSA Certification
093751.
Output (linear with pressure) 0 to 10 VDC (into > 10K ohm load)
Overpressure Limit 120% of F.S. or 45 psia, whichever is greater
Sensor Temperature 150° C (302° F), 200° C (392° F)
Type of Measurement Absolute pressure
Volume (P
X
side) 7.33 cc (0.447 cu. in.)
Weight 1.16 lbs (0.524 kg)
Performance Specifications
Accuracy 4
150

C; 200

C
± 0.5% of Reading
3
Dimensions do not include the external connector and tubulation.