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ATEX Approved 1823 Differential Pressure SwitchThe 1823 in Flame-Proof ATEX Enclosure
The 1823 in Flame-Proof ATEX Enclosure
Essential for industrial environments, the ATEX approved SERIES AT21823 combines small size with 2% repeatability. Set point adjustment inside the switch allows for set point settings across 9 ranges from the low of .07 in w.c. to a maximum 85 in w.c. differential pressure. Series AT21823 flame-proof ATEX enclosures are available in aluminum and are ideal for low pressure hazardous area applications. Various housing options such as an overpressure relief valve or external setpoint adjustment knob are available. External setpoint knob allows adjustment without opening the enclosure. Important notes for installation: • Cables must be fitted through 1/2" NPT cable gland or ATEX conduit (not supplied with instrument). • Make sure after cabling to close tight cover and cable gland, in order to keep IP66 rating (IP65 with option OPV, overpressure relief valve). • Open cover only after de-energizing instrument. • Attention: Check local safety rules and warnings on unit and manual for a correct use of the instrument in hazardous area.
Please see Series 1800 for non-ATEX approved.
Product Applications
EXAMPLE
AT21823
00
A
B
K1
1
X
T2
SF
Series AT21823-00-ABK11XT2-SF Pressure Switch with ATEX Enclosure, range 0.08-0.22" w.c., aluminum housing, blind top cover, without adjustment hand knob, 1/8" npt female brass pressure connection, standard plug without overpressure relief valve and stainless steel tag, silicon free
SERIES
Pressure switch with ATEX enclosure
RANGE
00 0 1 2 5 10 20 40 80
0.08-0.22" w.c. 0.15-0.50" w.c. 0.3-1.0" w.c. 0.5-2.0" w.c. 1.5-5.0" w.c. 2.0-10.0" w.c. 3.0-22.0" w.c. 5.0-44.0" w.c. 9.0-85.0" w.c.
HOUSING MATERIAL
Aluminum
COVER
B O
Blind Top Cover Glass Top Cover (not available)
ADJUSTMENT HAND KNOB
K1 K2
without Adjustment Hand Knob with Adjustment Hand Knob
PRESSURE CONNECTION
1 2
1/8" npt female Brass Pressure Port 1/8" npt female Stainless Steel Port
OVERPRESSURE PLUG
X OPV
Standard without Overpressure Relief Valve Overpressure Relief Valve material same as ports
STAINLESS STEEL TAG
Stainless Steel Tag
OPTION
B BGAP G MIL PRESET SF
Buna-N Diaphragm B Gap Microswitch G Contacts MIL Switch Preset Silicon Free