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Versatile and easy-to-adjust, this pressure switch/gauge has a low-temperature limit of -20°F and a range of 0 to 1 inWC. Work with this 3-in-1 instrument that provides a quick response to pressure changes with a 1% full-scale dead band and has set points that are instantly adjustable with front knobs.
Versatile and easy-to-adjust, this pressure switch/gauge has a low-temperature limit of -20°F and a range of 0 to 1 inWC. Work with this 3-in-1 instrument that provides a quick response to pressure changes with a 1% full-scale dead band and has set points that are instantly adjustable with front knobs.
Work with this pressure switch/gauge that offers continuous gauge readings that remain unaffected by switch operations or during the loss of electricity. In addition, this switch/gauge is suitable for applications such as air conditioning and fume exhaust systems, and clean rooms.
Features
Bezel and front cover
With set point knobs and zero adjustment screw removed to expose Photohelic® gage set point mechanism. Cover is clear polycarbonate plastic.
Gauge pointer and light shutter
Are mounted on helix and balancing counterweight. Shutter passes through slot in optical limit switch to expose phototransistors to integral infrared light source or mask them depending on applied pressure.
Light Shield
Effectively protects phototransistors from strong outside light sources yet allows free pointer movement. It also gives interior a clean "finished" look.
Optical limit switches
Are used for reliability and long service life. Attached directly to set pointers, they are individually aligned to assure precise switching accuracy.
Applications
| Switch Specifications | |
| Type | Each set point has 2 form C relays (DPDT) |
| Repeatability | ±1% of FS |
| Electrical | Rating: 10 A at 28 V DC, 10 A at 120, 240 V AC Connections: Screw terminals use 167°F (75°C) copper conductors only |
| Power Requirements | 120 V AC, 50/60 Hz; 240 V AC and 24 V AC power optional |
| Mounting Orientation | Diaphragm in vertical position |
| Set Point Adjustment | Adjustable knobs on face |
| Agency Approvals | CE, CSA, UL | Gauge Specifications |
| Service | Air and non-combustible, compatible gases |
| Accuracy | ±2% of FS at 70°F (21.1°C) |
| Pressure Limits | -20" Hg to 25 psig (-0.677 to 1.72 bar) |
| Temperature Limits | -20°F to 120°F (-28.9 to 48.9°C) |
| Process Connections | ⅛" female NPT |
| Size | 4" (101.6 mm) dial face, 5" (127 mm) OD x 8-¼" (209.55 mm) |
| Weight | 4 lbs (1.81 kg) |
| Switch Specifications | |
| Type | Each set point has 2 form C relays (DPDT) |
| Repeatability | ±1% of FS |
| Electrical | Rating: 10 A at 28 V DC, 10 A at 120, 240 V AC Connections: Screw terminals use 167°F (75°C) copper conductors only |
| Power Requirements | 120 V AC, 50/60 Hz; 240 V AC and 24 V AC power optional |
| Mounting Orientation | Diaphragm in vertical position |
| Set Point Adjustment | Adjustable knobs on face |
| Agency Approvals | CE, CSA, UL | Gauge Specifications |
| Service | Air and non-combustible, compatible gases |
| Accuracy | ±2% of FS at 70°F (21.1°C) |
| Pressure Limits | -20" Hg to 25 psig (-0.677 to 1.72 bar) |
| Temperature Limits | -20°F to 120°F (-28.9 to 48.9°C) |
| Process Connections | ⅛" female NPT |
| Size | 4" (101.6 mm) dial face, 5" (127 mm) OD x 8-¼" (209.55 mm) |
| Weight | 4 lbs (1.81 kg) |
