ISTEC CORPORATION
Flow Measurement & Control
5 Park Lake Road, Unit 6
Sparta, NJ 07871 USA
Tel 973-383-9888
Fax 973-383-9088
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Model “A” Series Gas Meters

 Model “A” Series Gas Meters (400A-675A-800A-1000A)The "A" Series commercial diaphragm meters comprise a range of positive displacement gas measurement devices with capacities of 400 to 1000 ft3/hr (11m3/hr to28m3/hr). These meters use proven diaphragm meter technology in a 3-chambered design to provide accurate measurement across their respective flow ranges. Long-life and low maintenance are assured by the combination of a self-lapping orbital valve, a one-piece seamless diaphragm, and few moving parts. Careful attention to design makes them compact and lightweight for their capacity ratings.

COMPATIBILITY

These meters are intended primarily for use with natural gas, but are compatible with a variety of non-corrosive dry gases. A compatibility listing is found in the table at right. For gases not listed, contact ISTEC Corporation.

 

FEATURES APPLICATIONS
  • Lightest Meters in their Respective Capacity Ranges
  • Retrofits to Any Competitive Installation
  • 3-chamber Design
  • Wearless Orbital Valve
  • One-piece
  • Seamless
  • Convoluted Diaphragm
  • Lubrication-free Bearings
  • Instrument Adaptable
  • EZ-VU Adjustment System (675A -1000A)
  • O-ring Diaphragm Seal (675A -1000A)
  • Parts Commonality with Old Style (Sprague, Easy Turn) Allows Simple Installation
  • AMR-compatible

Model 400A

  • Restaurants
  • Dry Cleaners
  • Service Stations

Models 675A, 800A, 1000A (ET)

  • Schools
  • Hospitals
  • Hotels
Meter Classification
400A
675A
800A
1000A
Meter Type
Non-temperature compensated or temperature compensated
Hub Center-to-Center
6-25/32" or 8-1/4"
10"
11"
11"
Hub Sizes
#4 Sprague Standard 20LT, 30LT, 45LT
#4 Sprague Standard 30LT, 45LT
#5 Sprague Standard 30LT, 45LT, 60LT, 100LT
#5 Sprague Standard 45LT, 60LT, 100LT
Index Type
4-circle dial (ft3)
Standard 7", 14", 2 psig
4-digit direct read (ft3)
5-digit direct read (ft3 or m3)
7-digit direct read (m3)
5-circle dial (ft3)
Standard 7", 14"
5-digit direct read (ft3)
6-digit direct read (m3)
7-digit direct read (m3)
Sealing
Red Plastic Snap-seals
Badge Information
As required
Adjustment Information
As required
 
Surface Treatment
ASA 49 Gray Paint
Packaging
Single Pack
24/skid
Single Pack
12/skid

DIMENSIONS
Model
A1
A2
B1
B2
C
D
E
Wt
400A
6.78"
(172mm)
8.25"
(210mm)
9.5"
(241mm)
10.9"
(277mm)
14.71"
(374mm)
8.71"
(221mm)
9"
(229mm)
12.3 lbs
(5.6 kg)
 
A
B
C
D
E
Wt
675A
10"
(254mm)
23.2"
(589mm)
18.6"
(472mm)
15.6"
(396mm)
13.3"
(338mm)
43 lbs
(19.5 kg)
800A
11"
(279mm)
23.2"
(589mm)
18.6"
(472mm)
15.6"
(396mm)
13.3"
(338mm)
43 lbs
(19.5 kg)
1000A
11"
(279mm)
23.2"
(589mm)
18.6"
(472mm)
15.6"
(396mm)
13.3"
(338mm)
43 lbs
(19.5 kg)
675A ET
10"
(254mm)
24.8"
(630mm)
18.6"
(472mm)
15.6"
(396mm)
13.3"
(338mm)
43 lbs
(19.5 kg)
800A ET
11"
(279mm)
24.8"
(630mm)
18.6"
(472mm)
15.6"
(396mm)
13.3"
(338mm)
43 lbs
(19.5 kg)
1000A ET
11"
(279mm)
24.8"
(630mm)
18.6"
(472mm)
15.6"
(396mm)
13.3"
(338mm)
43 lbs
(19.5 kg)

 

Dimensions Drawings

MODEL 400A
Badges Aluminum
Carrier Wire Brackets Acetyl
Carrier Wires C117 Steel, Zinc Dichromate Plate
Case Screws Grade 1
Center Shaft 416 Stainless Steel
Diaphragm Nitrile Rubber, Dacron Polyester Voile Fabric
Diaphragm Tin Center : #500S-H22 Aluminum Outer: Tin Plate Outer Flange: Tin Plate
Gaskets Cork/Neoprene
Hubs Zinc-plated Steel
IDM Seal Acetyl
Index Box Polycarbonate
Index Drive Movement Shaft: 416 Stainless Steel Housing: Acetyl
Index Face Plate ABS
Index Gears Acetyl
Links Acetyl
Lower Main Die-cast Zinc ZA-3
Meter Center, Sides, Top Case Die-cast Aluminum Alloy 13380 or 13383
Tangent Crank Die-cast Zinc ZA-3
Timing Arm 360 Brass
Valve Seat and Cover Thermoset Phenolic

MODELS 675A, 800A, 1000A
Badges Aluminum
Carrier Wire Brackets Acetyl
Carrier Wires C117 Steel, Zinc Dichromate Plate
Case Screws Grade 1
Center Shaft Glass-reinforced Nylon
Diaphragm 416 Stainless Steel
Diaphragm Tin Nitrile Rubber, Dacron Polyester Voile Fabric
Gaskets Center : #500S-H22 Aluminum Outer: Tin Plate Outer Flange: Tin Plate
Hubs Nitrile Rubber
IDM Seal Zinc-plated Steel
Index Box Acetyl
Index Drive Movement Polycarbonate
Index Face Plate Shaft: 416 Stainless Steel Housing: Acetyl
Index Gears ABS
Links Acetyl
Lower Main Acetyl
Meter Center, Sides, Top Case Lead
Tangent Crank Die-cast Aluminum Alloy 13380 or 13383
Timing Arm 360 Brass
Valve Seat and Cover Thermoset Phenolic
ET Mounting Plate Die-cast Aluminum Alloy 13380 or 13383

400A SERIES METER ACCURACY – Air

400A Series Meter Accuracy – Air

400A SERIES METER OPTIONAL TEMPERATURE COMPENSATION

400A Series Meter Optional Temperature Compensation

400A SERIES METER CAPACITY & PRESSURE LOSS

400A Series Meter Capacity & Pressure Loss

400A SERIES METER ACCELERATED LIFE TEST – Running at 800 ft3/hr. (22.6 m3/hr.)

400A Series Meter Accelerated Life Test

675A, 800A, 1000A SERIES METER ACCURACY – Air

675A, 800A, 1000A Series Meter Accuracy – Air

675A, 800A, 1000A SERIES METER OPTIONAL TEMPERATURE COMPENSATION

675A, 800A, 1000A Series Meter Optional Temperature Compensation

675A, 800A, 1000A SERIES METER CAPACITY & PRESSURE LOSS

675A, 800A, 1000A Series Meter Capacity & Pressure Loss

675A, 800A, 1000A SERIES METER ACCELERATED LIFE TEST – 675A Running at 900 ft3/hr. (25.5 m3/hr.)

675A, 800A, 1000A Series Meter Accelerated Life Test – 675A Running at 900 ft3/hr (25.5 m3/hr)

Gas Type
Specific Gravity
Conversion Factor
Air
1.00
1.00
Argon
1.38
0.85
Dry Carbon Dioxide
1.52
0.81
Ethane
1.04
0.98
Helium
0.14
1.49
Hydrogen
0.07
1.49
Krypton
2.82
0.59
Methane (pure)
0.55
1.35
Natural Gas
0.60
1.29
Neon
0.70
1.20
Mitrogen
0.97
1.02
Propane
1.53
0.81
Xenon
4.53
0.47

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