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Model 140 Diaphragm Type Differential Pressure Gauge & Switch
Brand: Mid-West Instrument
Model 140 Diaphragm type DP Gauge provides outstanding capabilities not previously available in a modestly priced differential pressure gauge/switch.
Features- Total separation of high and low pressures by a Convoluted Elastomer Diaphragm
- Over range protection to full rated working pressure
- Body Materials: Aluminum, Brass or 316L stainless steel Hastelloy available
- Internal metal parts 316 stainless steel
- ¼" Female NPT & ½" Female NPT Process Connections
- Sensor magnetically coupled to the indicating pointer and optional switches
- Weather-resistant construction standard
- Shatter resistant acrylic lens
- Variety of Dial type and Sizes: 2-1/2", 3-1/2" & 4-1/2"
- DP Ranges available in: Inches H2O, psid, bar, and kPa
- Available with Square Root dials for flow measurement
- Multiple mounting options available
- Temperature Limits: -40° to 200°F (-40° to 93°C)
Specifications
Brand
Accuracy
- 0 to 15 psid to 0 to 100 psid: ± 3/2/3 %
- 0 to 50” H₂O to 0 to 399” H₂O: ± 5 %
Approvals & Certifications
- CE
- CRN
- CSA (C,US)
- UL (C,US)
Diaphragm Material
- Buna-N
- Ethylene Propylene (EPR)
- Silicone
- Viton
Enclosure, Body Material
- 316 Stainless Steel
- 316L Stainless Steel
- Aluminum
- Brass
- Engineered Plastic Housing
Environmental Protection
- IP66
- NEMA 4X
- NEMA 7
NACE & NIST
- NACE MR-0175
NPT Connection
- 1/2” NPT Female
- 1/4” NPT Female
Set Point - Decreasing
- bar: 0 to 7
- Inches WC: 0 to 2,768
- kPa: 0 to 700
- psi: 0 to 100
Set Point - Increasing
- bar: 0 to 7
- Inches WC: 0 to 2,768
- kPa: 0 to 700
- psi: 0 to 100
Switch Type
- 1 or 2 - SPDT 3 W, 125 Vac/dc, 0.25 A
- 1 or 2 - SPST (Normally Open) 25 W, 240 Vac/dc, 0.5 A
System Pressure
- bar: 0 to 200
- kPa: 0 to 20,000
- psig: 0 to 3,000