Quick Start Guide
00825-0100-3700, Rev AA
December 2019
Rosemount™ 370XA Natural Gas Chromatograph
Quick Start Guide
Typical installation Minimum specifications Safety first. Before you start…
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Rosemount 370XA Natural Gas Chromatograph
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Sample handling system
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Pole mount brackets
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Measure and sample vents
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4-in. Pole
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Natural gas pipeline
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Carrier gas: Ultra-high purity (99.9995 %) helium (or
optional hydrogen)
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Calibration gas
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¼-in (6.35 mm) clean, dry, stainless steel tubing
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Carrier gas switchover valves
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⅛-in (3.175 mm) stainless steel tubing
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Heat-traced (insulated) stainless steel tubing
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Sample-probe: Installed at ⅓rd on center
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These are the minimum specications recommended for a typical
installation. Please reference the Rosemount 370XA product manual
for more details or call the factory for additional support.
Standard power:
24 Vdc (21 Vdc–30 Vdc)
55 Watts startup, < 25 Watts steady state
Environmental temperature:
-4 °F to 140 °F (-20 °C to 60 °C)
Enclosure protection rating:
IP65 and NEMA 4X
Carrier gas
Must be regulated to 90 psig (6.2 BarG)
Zero-grade helium
Zero-grade hydrogen available as an option
This Quick Start Guide is intended for typical installations only.
For more details, please reference the Rosemount 370XA product
manual or contact the factory.
WARNING
Use this unit in a well-ventilated area, as required by government
regulations.
WARNING
Exit ports may discharge dangerous levels of toxic vapors; use
proper protection and a suitable exhaust device.
WARNING
Observe and comply with all precautionary signs posted on the
GC. Failure to do so may result in injury or death to personnel or
cause damage to the equipment.
Actuation gas
Must be regulated to 90 psig (6.2 BarG)
Helium
Nitrogen
Clean dry air
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Sample input pressure range:
10 to 25 psig (0.7 to 1.7 BarG)
NOTICE
Install and operate all equipment as designed and comply
with all safety requirements. The “Seller” does not accept any
responsibility for installations of the 370XA, or any attached
equipment, in which the installation or operation thereof has
been performed in a manner that is negligent and/or noncompliant with applicable safety requirements.
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NOTICE
The unit is intended to be connected to a 24 Vdc power source
by qualied personnel in accordance with local and national
codes.
NOTICE
A suitable APPROVED switch and fuse or a circuit breaker shall be
provided to facilitate the disconnection of power.
NOTICE
All gas connections must be properly leak tested at installation.
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Step 1- Mounting the Rosemount 370XA
Recommended Minimum Installation Clearances
8 in.
(200 mm)
38 in. (665 mm)
25 in.
(635 mm)
11 in.
(280 mm)
20 in.
(50 mm)
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Mount the bracket on the wall.
5½ in.
(140 mm)
3. Maneuver the GC to insert the two top bolts into the eyelets
of the mounting bracket and allow the bolts to drop down and
hold the GC loosely on the bracket.
18 in.
(460 mm)
65 in.
(1660 mm)
8 in.
(200 mm)
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Secure the base.
12 in.
305 mm
28 in.
(705 mm)
8 in.
200 mm
40 in.
(1000 mm)
Mount the bracket.
40 in.
(1000 mm)
10⅞ in.
(275 mm)
1½ in.
(40 mm)
40 in.
(1000 mm)
1. Install ⅜-in. (10 mm) anchors (not supplied) suitable to anchor
the weight of the GC, approximately 50 lb. (22 kg) as per the
drawing. Use the bracket as a guide to locate the anchors
correctly before drilling the holes. The threads of the anchors
should protrude from the wall by 1½ in. (40 mm).
2. Mount the bracket to the wall anchors and tighten the nuts.
Ensure that the bracket is attached rmly to the wall.
4. Screw in the two bottom bolts through the mounting bracket
with the washers on. The at washer should be against the
bracket, and the spring washer between the at washer and the
bolt head. Hand tighten these two bolts so that they secure the
GC in place.
5. One at a time, remove the top bolts, put on the washers, and
screw the bolts into the back of the GC and hand tighten.
9 in.
(230 mm)
11 in.
(280 mm)
9 in.
(230 mm)
11 in.
(280 mm)
NOTE:
Secure base to oor
1. Secure to the oor with four ½-in (12.7 mm) or ⅜-in ( 9.525 mm)
cement anchors.
NOTE: The cement foundation should be able to support the weight of
the GC, 50 lb. (22 kg), and its accessories, as well as any other utilities
that may be installed.
2. Install mounting pole in base; if supplying your own pole, it
should be 4 in. (106 mm) in diameter and at least 55 in.
(1397 mm) or 4.5 ft (1.39 m) tall.
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Tighten the screws on the bracket.
10.849 in.
(275.6 mm)
1. Use a 6 mm hex wrench to screw the top two bolts into the back
of the GC without the washers, leaving ½ in (1.27 cm) of thread
showing.
40 in.
(1 m)
.5 in.
(12 mm)
1. Attach the bracket to the pole by sliding the plastic inserts onto
the pole.
2. Install the two U-bolts through the inserts and the holes in the
bracket.
3. The base of the bracket should be 40 in. (1000 mm) from the
ground to make the operator interface easy to use.
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