Product Features and Benefits
- Cost Effective, Simple, rugged, compact design.
- Glass Reinforced Thermoplastic Gauge Front Is Standard
- Over-range protection to max pressure.
- Weatherproof rated to NEMA 4X/IP65.
- Shatter Resistant Lens
- Operating Temp. -40º F to +200º F (-40ºC to +93ºC)
- Proof Pressure: 12,000 PSI Models:120-A & 120-S
- Proof Pressure 10,000 PSI Model:122-A
- Five year Limited Warranty on every gauge.
Mid-West differential pressure gauges are designed to measure pressure drop
across Filters, Strainers, Separators, Valves, Pumps, Chillers, etc. as well as
for local flow indication and control. Basic gauge functionis to measure the
difference in pressure between two points in a system, the differential pressure
results are displayed on the gauge dial.
About This Product
DP Range: 0-5 PSID (0-0.35 bar) thru 0-110 PSID (0-7 bar)
Mid-West Piston Type: Model 120 ± 2% or Model 122 ± 5% Full Scale Accuracy.
Piston type gauges are primarily designed for liquid applications. Differential
Pressure is sensed by the movement of a precisely ground floating piston/magnet
in a precision bore against a calibrated spring. Any variation in pressure on
either side of the piston/magnet will cause the magnet to move proportionally to
the change in differential pressure. A rotary pointer magnet located close to
the internal magnet, but outside the pressure housing, follows the movement of
the piston magnet and indicates differential pressure on the dial. Piston type
DP gauges exhibit a slight amount of bypass as the fluid crosses from the high
to the low pressure port. Due to precision sizing of piston and body bore,
leakage across the piston will not exceed 15 SCFH air at 100 PSID at ambient
conditions.
MODEL 120/122-COMMON OPTIONS:
DP Ranges: PSID, Bar, Kpa, Dual Scale
Body Materials: Aluminum or 316L Stainless Steel
Dial Types: 3-1/2" & 4-1/2" Round Uni-Directional Round Anodized
Aluminum housing assembly
Seals & Diaphragm Materials: Buna-N, Viton
Carbon or Stainless Steel Pipe Mount Kit
(Pipe Mount option not available for Model 122)
(Pipe Mount option not available with C or D switch option)
Liquid Fill or Maximum Follower Pointer
(Can not combine
Liquid Fill with Maximum Follower Pointer options)
Wall Mount Kit (Not available with back connections)
(Wall Mount option not available with C or D switch option)
Connections: 120/122(1/4"FNPT) and 120(1/2"FNPT)
FOR A QUOTE ON ADDITIONAL OPTIONS PLEASE CALL:
1-800-648-5778
MODEL 120/122-ADDITIONAL OPTIONS:
Dial Types: 3-1/2" & 4-1/2" Round Uni-Directional Round Anodized
Aluminum housing assembly housing assembly, Non-Indication differential pressure
switches available.
Seals & Diaphragm Materials: Neoprene, Teflon, Ethylene Propylene
and Perfluoroelastomer
Connections: 7/16"-20 Straight thread "O" ring port
Other Options: Reversed high/low process connections, Oxygen
Cleaning, Stainless Steel Tags and more...
Electrical Switches: 1 & 2 switch std, Class 1 Div. 1 & Div 2,
Explosion Proof
Standards
All Model 120/122 differential pressure gauges either conform to and/or are
designed to the requirements of the following standards:
ASME B1.20.1
ASME B40.100
CSA-C22.2 No. 14.25 and 30
NACE MR0175
NEMA Std. No. 250
SAE J514