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卓爾瑞華（北京）科技有限公司
卓爾瑞華（北京）科技有限公司
WIKA DA10 差壓開關 高靜壓保護10bar 低壓60mbar EEx-d防爆 IP65
| 類型： | 機械壓力開關 | 額定電壓： | 220（V） |
| zui大工作壓力： | 60mbar（Pa） | 型號： | DA10 |
| 額定電流： | 15（A） | 品牌： | WIKA/威卡 |
| 機械壽命： | 100（萬次） | 產品認證： | CE |
| 加工定制： | 是 |
WIKA DA10 差壓開關 高靜壓保護10bar 低壓60mbar EEx-d防爆 IP65
Differential pressure switch
Ex protection Ex-d, IP 65, for low pressure ranges
Model DA10
Differential pressure switch model DA10
Applications
■ Differential pressure monitoring and direct switching of electrical loads
■ For gaseous and liquid, aggressive and highly viscous or contaminated media, also in aggressive ambience
■ Process industry: Chemical/petrochemical, on- and offshore, technical gases, environmental technology,machine building and general plant construction, water treatment, pharmaceutical industry
■ Pump monitoring and control / filter monitoring, level measurement in closed tanks
■ Ignition protection type GAS Ex-d DUST Ex-tD Gr. II Cat. 1/2 GD
Special features
■ Case flameproof enclosure
■ Ingress protection IP 65, NEMA 4
■ Ambient temperature -30 ... +85 °C
■ 1 or 2 independent switch points, high contact rating up to 15 A / AC 220 V
■ Differential pressure from 16 mbar, working pressure （static pressure） up to 10 bar
Description
These high-quality differential pressure switches have been developed especially for safety-critical applications. The high quality of the products ensures reliable monitoring of your plant. The manufacturer Cella is certified to ISO 9001.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.
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 as for PLC applications, Argon gas-filled micro switches with gold-plated contacts can be selected as an option.
By using a diaphragm measuring cell with fulcrum lever transmission, the model DA10 pressure switch is extremely robust and guarantees optimal operating characteristics.
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 = 2 x 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
If the pressure is rising, the switch point should be set between 35 mbar up to 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 connection using internal terminal block, protective conductor connection using internal and external screw, max. earth 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.
Weight
approx. 10 kg
Options
■ Other process connection, also with adapter
■ Sealings （model 910.17, see data sheet AC 09.08）
■ Electrical connection 3/4 NPT, G 1/2, G 3/4 or M20 x 1.5 （female）
■ Cable gland on request
■ 2" pipe-mounting kit （with clamping element）
■ Version for off-shore 3） or tropicalised application 3）
■ Accessories:
Three-way or five-way valve
3） 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
Ordering information
Model / Switch contacts with version / Setting range / 2 x Process connection / Electrical connection / Switch point（s） / Switching direction（s） / Options
Example: DA10 - U1 - 0/16 mbar - 2 x 1/4" NPT-F - 1/2" NPT-F
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