Dwyer DA/DS系列波登管压力开关

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Dwyer DA/DS系列波登管压力开关

公认最好压力开关，Mercoid D 系列是世界上型号最全的压力开关。只要你有应用需要，D 系列压力开关都能满足。D 系列具有非常高的灵敏性和稳定性。DA 型带有两个外部调整件。一个可设置高压工作点，另一个可设置低压工作点。死区(高低设定点的差)，可以在整个设定范围内任意设定。DS 型带有一个外部调整件，只提供一个设定点。死区由出厂时固定，不能现场改变。可选择开关形式，密封的快速开关和密封的水银开关。
可视设定刻度盘
开/关指示（水银开关）
可调或固定死区
SPDT密封快速开关或密封水银开关
外部开关设定点调节
在范围内任何一点都能调整到最小死区
压力范围从真空到8000 Psig
UL，CSA 认证. 多数型号FM 认证
常规、全天候或防爆防护

产品详细

材质：黄铜，403 不锈钢，或316 不锈钢
温度范围：180°F（82°C）
压力范围：工作量程的最大压力
防护指标：常规，全天候或防爆
重复性：满工作量程±1%，DS-7300 型号为±1.5%
开关类型：SPST 水银开关，SPDT 水银开关，SPDT 快速开关，或SPDT 密封快速开关。也可选择其它电路形式
电气指标：见型号表
电气连接：压紧接线端
电气出口：常规：集线管1/2",全天候：1/2"集线管,防爆：3/4"NPT内螺纹
工艺连接：常规和全天候：1/4"NPT，外螺纹1/2"NPT外螺纹在量程15S 和16S 上。防爆：1/2"NPT外螺纹和1/4"NPT内螺纹
安装定位：垂直.
设定点调节：螺丝调节
重量：常规：4 Lb（1.8 Kg），全天候：6 Lb（2.7 Kg），防爆：8 Lb（3.5 Kg）
死区：见型号表
机构认证：CE，UL，CSA，FM

选型表：

举例	_ _DA_ _	_ _31	_153_ _	_4	标准DA波登管压力开关,双设定点, 自动复位, SPDT水银开关, 1-35 psig
RESET OPTIONS	R		U		Manual reset, single adjustment, operates on decrease automatically	G E N E R A L
	R		L		Manual reset, single adjustment, operates on increase automatically
	S⁽³⁾				Automatic reset, single adjustment, DS only
	L⁽¹⁾⁽³⁾				Manual lock reset, single adjustment, available as special order only
HOUSING & APPROVAL OPTIONS	W				Weatherproof enclosure, NEMA 3S, 4 and 4X, flanged back standard
	N3 W				Weather resistance, includes drain, flanged back standard, available as special order only
	H				Explosion-proof enclosure, control integral, available only on DA, DR, DS
	E				Explosion-proof enclosure, control removable, available on DA, DR, DS
	F				Factory Mutual approval, DAW is FM approved as standard
CIRCUIT SWITCHING OPTIONS			___2		SPST opens on pressure increase, elect. code A, mercury switch
			___3		SPST closes on pressure increase, elect. code A, mercury switch
			_153		SPDT, elect. code B, mercury switch
			_156		2 each SPST, one opens as the other one closes, elect. code A, mercury switch
			_804		2 each SPDT, elect. code B, mercury switch, 18" leads, elect. code G, snap switch, screw terminals
			_(___)		Other circuits available, consult factory
		_2	___2_		SPST opens on increase, elect. code I, DS only, mercury switch
		_2	___3_		SPST closes on increase, elect. code I, DS only, mercury switch
		_4⁽²⁾⁽⁸⁾	4122_		Two stage, includes 2 each SPST, mercury switch
		_4⁽²⁾⁽⁸⁾	4129_		Two stage, includes 2 each SPST, mercury switch
		_4⁽²⁾⁽⁸⁾	4132_		Two stage, includes 2 each SPST, mercury switch
		_4⁽²⁾⁽⁸⁾	4123_		Two stage, includes 2 each SPST, mercury switch
		_5	___2		SPST mercury switch, elect. code H, opens on increase
		_5	___3		SPST mercury switch, elect. code H, closes on increase
		70	153		Snap switch, SPDT, elect. code D, 15A @ 120 VAC
		70⁽¹²⁾	804		2 each SPDT, elect. code F, for ranges above 35 psi only, add 30% to minimum deadbands, 702, 703, 704 only
		72	153_		DS only, snap switch, SPDT, elect. code E
		72	804_		2 each SPDT, snap switches, elect. code G, DS only
		74	_____		Two stage, includes 2 each, SPDT snap switches, elect. code G
			B		Delrin Bushed Movement, for all controls
RANGES & BOURDON TUBE MATERIALS		2		25S	range 30" Hg vac - 60 psig, type 403SS Bourdon tube
		2		26S	range 30" Hg vac - 75 psig, type 403SS Bourdon tube
		2		5S	range 2-60 psig, type 403SS Bourdon tube
		2		6S	range 5-100 psig, type 403SS Bourdon tube
		2		8S	range 10-200 psig, type 403SS Bourdon tube
		2		9S	range 10-300 psig, type 403SS Bourdon tube
		2		9AS	range 40-350 psig, type 403SS Bourdon tube
		2		10S	range 25-600 psig, type 403SS Bourdon tube
		2		11S	range 50-1000 psig, type 403SS Bourdon tube
		2		12S	range 100-1500 psig, type 403SS Bourdon tube
		2		13S	range 300-2500 psig, type 403SS Bourdon tube
		2		15S	range 500-5000 psig, type 403SS Bourdon tube, not avail. with housing E or back conn.
		2		16S	range 800-8000 psig, type 403SS Bourdon tube, not avail. with housing E or back conn.
		3		2	range 0-30" Hg vac, brass Bourdon tube
		3		3	range 10" Hg vac - 12 psig, brass Bourdon tube
		3		1	range 1/8-15 psig, brass Bourdon tube
		3		3A	range 1/8-20 psig, brass Bourdon tube
		3		4	range 1-35 psig, brass Bourdon tube
		3		27	range 25" Hg vac - 50 psig, brass Bourdon tube
		3		5	range 2-60 psig, brass Bourdon tube
		3		6	range 5-100 psig, brass Bourdon tube
		3		7	range 5-150 psig, brass Bourdon tube
		3		8	range 10-200 psig, brass Bourdon tube
		3		9	range 10-300 psig, brass Bourdon tube
		4		26E	range 30" Hg vac - 75 psig, 316SS Bourdon tube
		4		23E	range 5-75 psig, 316SS Bourdon tube
		4		6E	range 10-100 psig, 316SS Bourdon tube
		4		24E	range 10-150 psig, 316SS Bourdon tube
		4		9E	range 10-300 psig, 316SS Bourdon tube
		4		21E	range 30-400 psig, 316SS Bourdon tube
		4		22E	range 75-800 psig, 316SS Bourdon tube
		4		11E	range 100-1000 psig, 316SS Bourdon tube
		4		13E	range 200-2500 psig, 316SS Bourdon tube
		8⁽⁶⁾		23K	range 5-75 psig, 316SS Bourdon tube, carbon steel bottom, F housing standard
		8⁽⁶⁾		24K	range 10-150 psig, 316SS Bourdon tube, carbon steel bottom, F housing standard
		8⁽⁶⁾		9K	range 10-300 psig, 316SS Bourdon tube, carbon steel bottom, F housing standard
CONNECTION & MOUNTING OPTIONS		1			Standard housing
		2			Back connection, not available on D-900 series, not available on ranges 15S, 16S
		3			Flanged back - standard on "W" models
		4			Back connection and flanged back, not available for ranges 15S, 16S, or on D-900, 9200, 9500 series
RANGES		35⁽⁴⁾⁽⁵⁾		1N	-60 to 30°F, 150°F max., 304 SS bulb and copper capillary std.; SS special order	T E M P E R A T U R E
		35⁽⁴⁾⁽⁵⁾		3N	range 0 to 100°F, 240°F max., 304 SS bulb and copper capillary std.; SS special order
		35⁽⁴⁾⁽⁵⁾		4N	range 50 to 150°F, 250°F max., 304 SS bulb and copper capillary std.; SS special order
		35⁽⁴⁾⁽⁵⁾		5N	range 100 to 200°F, 300°F max., 304 SS bulb and copper capillary std.; SS special order
		35⁽⁴⁾⁽⁵⁾		7N	range 140 to 300°F, 500°F max., 304 SS bulb and copper capillary std.; SS special order
		35⁽⁴⁾⁽⁵⁾		8N	range 250 to 415°F, 550°F max., 304 SS bulb and capillary std.
		35⁽⁴⁾⁽⁵⁾		9N	range 350 to 550°F, 600°F max., 304 SS bulb and capillary std.
		35⁽⁴⁾⁽⁵⁾		10N	range 100 to 300°F, 500°F max., 304 SS bulb and copper capillary std.; SS special order
		35⁽⁴⁾⁽⁵⁾		11N	range 100 to 500°F, 600°F max., 304 SS bulb and capillary std.
		36^(4)(5)(10)		5NS	range 100 to 200°F, 300°F max., 304 SS bulb std.
		36^(4)(5)(10)		6NS	range 140 to 250°F, 380°F max., 304 SS bulb std.
CONNECTION & MOUNTING OPTIONS		37^(4)(5)(11)			Same as 36 except back connection, 304 SS bulb std.
		38⁽⁴⁾⁽⁵⁾			Same as 36 except has flanged back
		39^(4)(5)(9)			Same as 35 except has flanged back and back connection

NOTES:
(1) Not available on D_ _-_5, 74 or 95.
(2) Available on DA only.
(3) Not available on D_ _ _-70_ _.
(4) & (5) Not available with 9, 92, 95 Diaph. Seals.
(6) Available also as _ _ 28, 58, 708 and 728. Not available with E or H housing or 70-804 circuit.
(7) F available only as DAF, DSF, DRF, DAHF, DRHF, DSHF, not all ranges or circuits.
(8) Switch rating for D-400: AC, 120V @ .3A, 240V @ .15A, 24V @ .8A, DC, 120V @ .15A, 240A @ .07A. Not available for 440V service.
(9) Available only as _ _39, 539, 239, 7039, 7239, 439 and 7439.
(10) Available only as _ _36, 7036 and 7236.
(11) Available only as _ _37, 7037 and 7237.
(12) Available only on 702, 703 and 704.

ELECTRICAL RATING CODES

For Mercury Switch Contacts
CODE	CIRCUIT SUFFIX NO.	AC CAPACITY			DC RESISTIVE		HORSEPOWER
CODE	CIRCUIT SUFFIX NO.	120V	240V	440V	120V	240V	AC	DC
A	-2, -3	10A	5A	3A	10A	5A	3/4	1/3
B	-153, -804	4A	2A	⁽¹⁾	4A	2A	1/8	NA
C	-2, -3	⁽⁶⁾	⁽⁶⁾	⁽⁶⁾	10A	5A	3/4	1/3
H	-2, -3	5A	2A	NA	2-1/2A	1A	1/8	1/10
I⁽²⁾	-2, -3	0.3A	0.15A	NA	0.15A	0.07A	NA	NA

For Snap-Action Contacts
CODE	CIRCUIT SUFFIX NO.	AC CAPACITY			DC RESISTIVE		HORSEPOWER
CODE	CIRCUIT SUFFIX NO.	120V	240V	440V	120V	240V	AC	DC
D	-153	15A	15A	15A@480V	1/2A	1/4A	1/8	NA
E	-153	15A	15A	NA	⁽⁴⁾	⁽⁴⁾	⁽³⁾	NA
F	-804	12A	10A	5A	1/2A	1/4A	⁽³⁾	NA
G	-804	5A	5A	NA	⁽⁵⁾	⁽⁵⁾	NA	NA

NOTES:
(1) -153 circuit available 1A 440V AC on special order.
(2) Also rated 0.9A at 24V AC.
(3) 1/4 HP at 120V AC, 1/2 HP at 240V AC.
(4) DC rated controls (up to 10A.
(5) 5A, 30V DC resistive.
(6) 17A non-inductive at 120/240/440V AC.