Model 522
Diaphragm Type
Model 522 – Mid-West Instrument rolling diaphragm type gauge is a very competitively price gauge/switch. Model 522 Differential Pressure Gauge & Switch is a compact and weather resistant gauge for challenging DP Applications and installations. It is suitable for use in outdoor and “Hose Down” applications. Available with our popular plug-in DIN connector switch option, both in a SPDT and SPST electrical configuration. Model 522 is available with a Full scale accuracy of ±5% (0-5 PSID to 0-50 PSID)
NOTE: Reverse pressure should be avoided.
Contact Us Today For Availability
Product Features/Benefits
- Simple Rolling Diaphragm Design
- Glass Reinforced Thermoplastic Dial case (Panel Mountable)
- Weather Resistant (Specific Configuations) & Corrosion Resistant
- Shatter Resistant Lens
- Plug-In Din Connector Switch option
- 5 Year Warranty
- For complete model details See Bulletin_522.pdf
Specifications / Configuration
- Dial Sizes available: 2-1/2” and 4-1/2” Diameter
- Dial Scale Ranges: 0-5 PSID to 0-50 PSID (0-.35 bar to 0-3.5 bar)
- Differential Full Scale Ascending Accuracy ±5% (ASME B40.1 Grade D)
- Working Pressures up to 1000 PSIG (200 Bar)
- Operating Temp -40°F to +200°F (-40°C to +93°C)
- Weather Protection NEMA 4X
- Material of Construction of Body - Aluminum, Acetal Plastic and 316/316L Stainless Steel, (Wetted Part)
- Internal wetted parts-316 Stainless Steel, Ceramic Magnet
- ¼” FNPT End Connections only
- Maximum Over-range protection : 200 PSID (14 bar) - High over Low
- Elastomers (O-ring and Diaphragm Materials) Buna-N and Viton.
- For complete specifications see: Specificationsheet_522.pdf
Common Applications
- Filter and Strainer monitoring
- Compressed Air, Hydraulic Refrigerant
- Pump Performance Testing
- Heat Exchanger Pressure Drop Monitoring
- Water Treatment Applications
Switch Electrical Specifications:
See Electrical Installation and Operation Manual
Mid-West Instrument switches are mechanically adjustable allowing customer to set the switch within a defined adjustment span of range of the instrument. Mid-West can also pre-set switch set point(s) upon customer request. All Switches are CE marked per EU Low Voltage and RoHS Directive.
- Switches are optional
- Hermetically Sealed Switch Outputs: 3 amps in SPST and 0.25 Amp in SPDT configuration.
- DIN Connector Switch Adjustable from 40%-95% (SPST) of Range & 25%-75% (SPDT) of Range
- SPDT 3W, 0.25 Amp, 125 VAC/VDC
- SPST 60W, 3.0 Amp, 240 VAC/VDC
- Available with Flat Pack case with Jacketed Flying Leads or with DIN IP65 / NEMA 4X Plug-in Connector.
- DIN Compression Plug accepts and seals on 4.5 – 7 mm cable)
- Switch Location Top Only
- CE Marked for Compliance with the Low Voltage (Double Insulation) & RoHS Directives.
Additional Options:
- (2) 10-32 Mounting Holes on back of gauge body. 1.75 apart X .330” Depth
- Options not listed as standard please contact your sales coordinator for special requirements
The Mid-West Advantage
- 5 year warranty
- 30 + Years Hazardous Location product manufacturer.
- OEM and Private Label Capabilities
- Fast on-time Deliveries
- Friendly Customer Support
- Certified Quality System CSA B51-09 SAI GLOBAL
“Diaphragm Type” Gauges with Electrical Optional
| Model No. | Differential Pressure Range | Accuracy | Working Pressure | Electrical Available | Specifications | Installation/ Operation Manual | Electrical IOM | Drawing |
|---|---|---|---|---|---|---|---|---|
| Model 114 | 0-0.72 PSID (0-20" H20) to 0-20 PSID (0-600" H2O) Tank Level Applications |
±3/2/3% | 1000 PSI | CE / LVD, RoHS Compliant, NEMA 4X, 4-20mA Transmitter | ||||
| Model 130 | 0-5" H2O to 0-15 PSID (0-400" H2O) | 0-5" H2O to 0-9.9" H2O ±5% 0-10" H2O to 0-15 PSID ±3/2/3% |
Up to 500 PSI | CE / LVD, RoHS Compliant, NEMA 4X, Class 1-Div. 1 | ||||
| Model 140 | 0-50" H2O to 0-100 PSID | 0-50" H2O to 0-399" H2O ±5% 0-15 PSID to 0-100 PSID ±3/2/3% |
Up to 3,000 PSI | CE / LVD, RoHS Compliant, NEMA 4X, Terminal Strip, Class 1-Div. 1, Class 1-Div. 2, 4-20mA Transmitter | ||||
| Model 142 | 0-20" H2O to 0-25 PSID | ±3/2/3% | Up to 3,000 PSI | CE / LVD, RoHS Compliant, NEMA 4X, Terminal Strip, Class 1-Div. 2, 4-20mA Transmitter | ||||
| Model 522 | 0-5 PSID to 0-50 PSID | ±5% | 1,000 PSI | CE / LVD, RoHS Compliant | N/A |
Electrical “Diaphragm Type” Gauges
| Model No. | Differential Pressure Range | Accuracy | Working Pressure | Electrical Available | Specifications | Installation/ Operation Manual | Electrical IOM | Drawing |
|---|---|---|---|---|---|---|---|---|
| Model 240 | 0-20" H2O to 0-100 PSID | ±3/2/3% | Up to 1500 PSI | CE / ATEX / RoHS Compliant CSA, UL & KOSHA CERTIFIED, NEMA 4X, Terminal Strip, Class 1-Div. 1, Class 1-Div. 2, 4-20mA Transmitter | N/A | |||
| Model 700 / 710 / 715 | 0-5 PSID to 0-300 PSID | ±0.50% | 2,900 PSI | 2-Wire 4-20 mA Transmitter 15-28 VDC, LCD = 4-20 mA Transmitter 18-28 VDC, LED = 4-20 mA Transmitter 20-28 VDC 3 Wire 15-28 VDC/1-5 VDC, 15-28 VDC/0-5 VDC, 15-28 VDC/0-10 mADC, 15-28 VDC/0-20 mADC, 15-28 VDC/0-10 VDC |
N/A |
“Indicator” Style Diaphragm Type Gauges
| Model No. | Differential Pressure Range | Accuracy | Working Pressure | Electrical Available | Specifications | Installation/ Operation Manual | Electrical IOM | Drawing |
|---|---|---|---|---|---|---|---|---|
| Model 522C3-Color Dial | 0-5 PSID to 0-50 PSID | ±5% | 1,000 PSI | CE / LVD, RoHS Compliant | N/A | N/A | ||
| Model 555A3-Color Dial | 0-3.5 PSID to 0-43 PSID | ±5% | 300 PSI | Not Available | N/A | N/A | N/A |
