| 产品名称 | WIKA MWH 不锈钢系列 膜片活塞式压力开关 高压范围600bar IP65 |
|---|---|
| 公司名称 | 卓尔瑞华（北京）科技有限公司 |
| 价格 | 1000.00/个 |
| 规格参数 |
加工定制:是 品牌:wika/威卡 型号:mwh |
| 公司地址 | 北京市北京经济技术开发区文化园西路6号院20号楼1807 |
| 联系电话 | 010-51669912 15910733293 |
wika mwh 不锈钢系列 膜片活塞式压力开关
高压范围600bar ip65
pressure switch with diaphragm piston
stainless steel version, ip 65, for high pressure ranges model mwh
pressure switch with diaphragm piston model mwh
applications
pressure monitoring and direct switching of electrical loads
for high pressure ranges
for gaseous and liquid, aggressive and highly viscous or contaminated media, also in aggressive ambience
process industry: chemical/petro-chemical, on- and offshore, technical gases, environmental technology, machine building and general plant construction, water
treatment, pharmaceutical industry
special features
case made of stainless steel, electropolished
ingress protection ip 65, nema 4
ambient temperature -40 ... +85 °c
1 or 2 independent switch points, high contact rating up to 15 a / ac 220 v
setting ranges up to 600 bar, max. test pressure up to 700 bar
description
these high-quality pressure switches have been specifically developed for safety-critical applications. high quality and product manufacturing to iso 9001:2000 ensures reliable monitoring of your plant. in production, the switches are traced by quality assurance software at every step and subsequently are 100 % tested.
all wetted parts materials are from stainless steel as standard. each switch family is available in ip 65, ex-ia or ex-d versions (ex-d see model mah, data sheet pv 31.15).in order to ensure as flexible operation as possible, the pressure switches are equipped with micro switches, which make it possible to switch an electrical load of up to 15 a / ac 220 v directly. for smaller contact ratings, such asfor plc applications, argon gas filled micro switches with gold-plated contacts can be selected as an option.
by using a diaphragm measuring system, the model mwh pressure switch is extremely robust and guarantees optimal operating characteristics at very high pressures.
switch points
the switch points can be set to your requirements, free-ofcharge.
please specify:
switch point, switching direction for each contact (e.g. switch point 1: 0.5 bar, falling, switch point 2: 3 bar, rising) with two micro switches, the switch points can be set independently of each other.
after unscrewing the case cover, switch point adjustment can be made using the adjustment screw. the switch point is settable within the entire measuring range with the following
general rule:
define the value a = 2x repeatability + switch hysteresis
if the pressure is rising, the switch point should be set between (min. + value a) up to max. of the setting range.
if the pressure is falling, the switch point should be set between min. up to (max. - value a) of the setting range.
example:
setting range: 0 ... 1 bar with one switch contact repeatability: 1 % of 1 bar = 10 mbar
switch hysteresis = 15 mbar (see table setting ranges) value a = 2 x 10 mbar + 15 mbar = 35 mbar
for rising pressure, the switch point should be set between 35 mbar and 1 bar.
if the pressure is falling, the switch point should be set between 0 up to 965 mbar.
for optimal performance we suggest the switch point lies between 25 % and 75 % of the setting range.
electrical connection
½ npt female, cable connector using internal terminal block,ground connection using internal and external screw, max.ground cable cross-section 4 mm2
pressure switch certified per:
pressure equipment directive 97/23/ec (ped, annex 1,category iv, safety accessories, module b + d)
low voltage directive 73/23 eec and 93/68 eec
dielectric strength
safety class i (en 61298-2: 1997-06)
mounting
direct or wall mounting
preferred connection location of the process connection should be below. alternatively the instrument can be installed so that access to internals is from front of the enclosure and the electrical connection is placed on side.
weight
approx. 1.7 kg
options
other process connection, also with adapter
nbr sealing towards the pressure chamber
wiring 3/4 npt, g 1/2 or m20 x 1.5 (female)
cable gland on request
2" pipe-mounting kit (with clamping element)
version for off-shore or tropicalised application 4)
version for ammonia applications 4)
version to
gas ex-ia dust ex-iad gr. ii cat. 1 gd 5) electrical characteristics: ui = 30 v
ii = 100 ma
pi = 0.75 w
ci = 0 μf
li = 0 mh
accessories:
pressure gauge valves model 910.11, see data sheet ac 09.02
barstock valves model 910.81, see data sheet ac 09.18
4) inert gas filled contacts required
5) gold-plated and inert gas filled contacts required
approvals and certificates
gost-r certificate
test certificate *ca* (confirmation of the switching accuracy)
test report *cp* (3-time listing of the switch point, requires switch point specification)
material certificate 3.1 per en 10204
dimensions in mm
ordering information
model / switch contacts with version / setting range / process connection / electrical connection / switch point(s) / switching direction(s) / options
example:mwh - xx - u1 - 4/40 bar - 1/4"npt-f - 1/2"npt-f
欢迎致电咨询订购wika mwh 不锈钢系列 膜片活塞式压力开关 高压范围600bar ip65
电话:010-51669912 56291930 15910733293
传真：010-51669912
qq：823377546 1491421115 2636968574
邮箱：sales@zoriver.cn
公司官网：http://www.zoriver.cn http://www.zoriver.com.cn
"WIKA MWH 不锈钢系列 膜片活塞式压力开关 高压范围600bar IP65"的类型为机械压力开关，额定电压是220（V），最大工作压力为600bar（Pa），型号是MWH，额定电流为15（A），品牌是WIKA/威卡，机械寿命为100（万次），产品认证是PED证书，加工定制为是