Dwyer A3300-0 Photohelic Pressure Switch Gages, For Compatible Gases, Specialities : High Quality, Long Working Life

dwyer a3300-0 photohelic pressure switch gages

• dwyer a3300-0 photohelic pressure switch/gauge (.25-0-.25 inch w.c.) 
• model: a3300-0
• bezel and front cover (with set point knobs and zero adjustment screw) removed to expose photohelic® switch gage set point mechanism. gage pointer and light shutter are mounted on helix and balancing counter weight.

dwyer a3300-0 specifications

features

• measure 4 to 20 ma signals without "breaking the loop".
• measure ma signals for plc and control system analog i/o.
• dual backlit display with both ma measurement and percent of 4 to 20 ma span.
• measurement spotlight illuminates hard to see wires in dark enclosures.
• detachable clamp with extension cable for measurements in tight locations.
• measure 10 to 50 ma signals in older control systems using the 99.9 ma range.
• automatically change the 4 to 20 ma output for remote testing.
• power saving features, auto-off, backlight timeout extend battery life.
• hold function captures and displays changing measurements.

applications

• air conditioner systems
• clean rooms
• fume exhaust systems

dwyer a3300-0 specifications
switch specifications

• switch type:each set point has 2 form c relays (dpdt)
• repeatability:±1% of fs
• electrical rating:10 a at 28 vdc,10 a at 120,240 vac
• electrical connections:screw terminals. use 167°f (75°c) copper conductors only
• power requirements:120 vac, 50/60 hz,240 vac and 24 vac power optional
• mounting orientation:diaphragm in vertical position.consult factory for other position orientations
• 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),±3% on -0,±4% on -00 models
• pressure limits:-20" hg to 25 psig (-0.677 to 1.72 bar),mp option; 35 psig (2.41 bar),hp option; 80 psig (5.52 bar)
• temperature limits:20 to 120°f. (-6.67 to 48.9°c),-20 to 120°f (-28 to 48.9°c) with low temperature option
• process connections:? ? female npt
• dimensions:4" (101.6 mm) dial face,5 x 8¼" (127 x 209.55 mm)
• weight:4 lb (1.81 kg)