Dwyer产品 Mark系列阀位指示/开关/变送器美国德威尔压差表流量计差压计差压开关差压变送器

Mark系列阀位指示/开关/变送器
产品说明：
Mark系列是阀位指示器系列产品，可选择多种输出方式。有四种不同的型号使得Mark系列几乎可以满足任何应用的需要。Mark系列的标准型号带有阀位指示器，防护级别有全天侯，防爆和可浸入水中的防护。多种输出方式使其能广泛应用于各种领域。在16个参数选择中，其中开关就有六种型式供选择：电感感应开关，高温开关，金触点开关，全密封开关和大电流开关。除了开关输出之外，还有电位计输出，变送器输出和HART®通讯。它可用于角度阀和直行程阀，可显示阀门开关状态和阀门位置。 Mark 1采用了专利的磁力驱动技术，这样把开关和外界完全隔离，避免泄漏。 Mark 3和Mark 1同样是磁力驱动，但Mark 3可用于多圈转动的应用场合，例如闸阀。Mark 4采用直通轴驱动，价格低。
产品规格：
GENERAL
Product Rating: Weatherproof and flameproof. NEMA 1, 2, 3, 3R, 3S, 4, 4X, 6, 7, 9, 12, 13. UL rated: Class I, Div. 1 & 2, Groups B, C, D (some units available for Group A, consult factory); Class II, Div. 1 & 2, Groups E, F, and G. CSA rated: Class I, Div. 1 & 2, Groups A, B, C, D; Class II, Div. 1 & 2, Groups E, F, and G; Submersible to 50 feet. Certified Ex d IIC T6 IP68 15 meters). ATEX Compliant: -B suffix, directive 2014/34/EU, KEMA 03 ATEX 2391, II 2 G Ex d IIC T6 for (-25/-40/-50°C = Tamb = 80°C optional wording) depending on output and switch type selected. -IS suffix directive 2014/34/EU, KEMA 03 ATEX 1392X, II 1 G Ex ia IIC T4. (Switch type C is not available with ATEX; Switch type B is not available with ATEX intrinsically safe, -IS suffix). IECEx Compliant: IE suffix, IECEx DEK II.0056X Ex d IIC T6 Gb for -25°C/-40°C/-50°C = Tamb = 70°C and T5 for -25°C/-40°C/-50°C = Tamb = 80°C. II suffix, IECEx DEK II.0061X II Ex ia IIC T4 Ga. Compliant per EN 60079-0:2007 EN 60079-11:2006 and EN 60079-26:2006.
Switch Outputs (Mark 1, 3 and 4)
Temperature Limits: -58 to 176°F (-50 to 80°C). Switch Type C rated to 350°F (176°C) for 600 hours; Switch Type T rated to 250°F (121°C) continuous. [ATEX flameproof, -B suffix, rated -50 to 80°C (-58 to 176°F) for switch type A, G, H, T, or M; -40 to 80°C (-40 to 176°F) for switch type O, R, S, V, or W; -25 to 80°C (-13 to 176°F) for switch type B, D, I, or AS interface; ATEX intrinsically safe, -IS suffix, rated -25 to 40°C (-13 to 104°F) for switch type D or I; -40 to 40°C (-40 to 104°F) for switch type R, V, or W or -50 to 40°C (-58 to 104°F) for switch type A, G or H.]
Switch Type: See Model Chart page.
Electrical Rating: See Model Chart page.
Set Point Adjustment: Mark 1 and 4: 5 to 360°.
Potentiometer (Mark 1, 3 and 4)
Accuracy: ±0.5% of full span. Optional ±0.25% of full span.
Temperature Limits: -40 to 176°F (-40 to 80°C). [ATEX flameproof, -B suffix, rated -40 to 80°C (-40 to 176°F) for switch type A, G, M, O, R, S, T, V, or W; -25 to 80°C (-13 to 176°F) for switch type B, D, or I; ATEX intrinsically safe, -IS suffix, rated -25 to 40°C (-13 to 104°F) for switch type I; -40 to 40°C (-40 to 104°F) for switch type O, R, S, V, or W].
Power Rating: 1.5 watt maximum.
Output Signal: 1000Ω standard. Optional 2000, 5000, 10000, or 20000 Ω.
Zero and Span Adjustments: Span trim pot with 2000Ω adjustment. No zero adjustment.
Rotational Travel: Mark 1 and 4: Minimum 0°, Maximum 340°; Mark 3: 0 to 10 revolutions.
Transmitter (Mark 1, 3 and 4)
Accuracy: ±0.5% of full span. Optional ±0.25% of full span.
Temperature Limits: -40 to 176°F (-40 to 80°C). [ATEX flameproof, -B suffix, rated -40 to 80°C (-40 to 176°F) for switch type A, G, M, O, R, S, T, V, or W; -25 to 80°C (-13 to 176°F) for switch type B, D, or I; ATEX intrinsically safe, -IS suffix, rated -25 to 40°C (-13 to 104°F) for switch type I; -40 to 40°C (-40 to 104°F) for switch type O, R, S, V, or W].
Power Requirements: 5 to 30 VDC.
Current Consumption: 50 mA.
Output Signal: 4 to 20 mA.
Zero and Span Adjustments: Trim pots for adjusting both. Mark 1 and 4: Span is adjustable from 50 to 300°; Mark 3: Span is adjustable from 1.5 to 8.5 revolutions.
Conduit Connection: 3/4" female NPT standard. Optional one or two 1/2" female NPT. M25 X 1.5 and M20 X 1.5 optional.
Rotational Travel: Mark 1 and 4: Minimum 50°, Maximum 300°; Mark 3: Minimum: 1.5 revolutions, Maximum: 8.5 revolutions.
Transmitter w/HART® (Mark 1, 3 and 4)
Accuracy: ±0.25% of full span.
Temperature Limits: -40 to 176°F (-40 to 80°C). [ATEX flameproof, -B suffix, rated -40 to 80°C (-40 to 176°F) for switch type A, G, M, O, R, S, T, V, or W; -25 to 80°C (-13 to 176°F) for switch type B, D, or I].
Power Requirements: 8 to 30 VDC.
Current Consumption: 21 mA.
Output Signal: 4 to 20 mA.
HART® Receive Impedance: Rx = 500 kohm; Cx = 2500 pF.
Zero and Span Adjustments: Pushbuttons or HART® master for setting both. Mark 1 and 4: Span is adjustable from 0 to 330°; Mark 3: Span is adjustable from 1.5 to 8.5 revolutions.
Conduit Connection: 3/4" female NPT standard. Optional one or two 1/2" female NPT. M25 and M20 optional.
Rotational Travel: Mark 1 and 4: Maximum 330°; Mark 3: Minimum: 1.5 revolutions, Maximum: 8.5 revolutions.