Dwyer Mark User Manual
Page 5
4
Mark 1, 3 and 4 with Switch Outputs
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 and IECEx flameproof, -IE suffix, rated -50°C
(-58°F) to 80°C (176°F) for switch type A, G, H, T, or M, -40°C (-40°F) to 80°C (176°F) for switch type O, R, S, V, or
W, -25°C (-13°F) to 80°C (176°F) for switch type B, D, I, or AS Interface; ATEX intrinsically safe, -IS suffix and IECEx
intrinsically safe, II suffix, rated -25°C (-13°F) to 40°C (104°F) for switch type D or I, -40°C (-40°F) to 40°C (104°F)
for switch type R, V, or W, or -50°C (-58°F) to 40°C (104°F) for switch type A, G, or H.)
Switch Type: See model chart on pages 5 and 6.
Electrical Rating: See model chart on pages 5 and 6.
Set Point Adjustment: Mark 1 and 4: 5 to 360°. Mark 3: 1 to 25 revolutions.
Mark 1, 3, and 4 with Potentiometer
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 and IECEx flameproof, -IE suffix, rated -
40°C (-40°F) to 80°C (176°F) for switch types A, G, M, O, R, S, T, V, or W, -25°C (-13˚F) to 80°C (176°F) for switch
types B, D, or I.; ATEX intrinsically safe, -IS suffix and IECEx intrinsically safe, II suffix, rated -25°C (-13°F) to 40°C
(104°F) for switch type I, -40°C (-40°F) to 40°C (104°F) for switch types O, R, S, V, or W.)
Power Rating: 1.5 Watt maximum.
Output Signal: 1000 Ohm standard. Optional 2000, 5000, 10000, or 20000 Ohms.
Zero and Span Adjustments: Span trim pot with 2000 Ohm adjustment. No zero adjustment.
Rotational Travel: Mark 1 and 4: Minimum: 0°, Maximum: 340°. Mark 3: 0 to 10 revolutions.
Mark 1, 3, and 4 with Transmitter
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 and IECEx flameproof, -IE suffix, rated
-40°C (-40°F) to 80°C (176°F) for switch types A, G, M, O, R, S, T, V, or W, -25°C (-13°F) to 80°C (176°F) for switch
types B, D, or I.; ATEX intrinsically safe, -IS suffix and IECEx intrinsically safe, II suffix, rated -25°C (-13°F) to 40°C
(104°F) for switch type I, -40°C (-40°F) to 40°C (104°F) for switch types 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 and M20 optional
(Standard on SAA models).
Rotational Travel: Mark 1 and 4: Minimum: 50°, Maximum: 300°. Mark 3: Minimum: 1.5 revolutions, Maximum: 8.5
revolutions.
Mark 1, 3, and 4 Transmitter with HART
®
communication
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 and IECEx flameproof, -IE suffix, rated
-40°C (-4°F) to 80°C (176°F) for switch types A, G, M, O, R, S, V or W, -25°C (-13°F) to 80°C (176°F) for switch
types B, D or I; ATEX intrinsically safe, -IS suffix and IECEx intrinsically safe, II suffix, rated -40°C (-40°F) to 40°C
(104°F) for switch types O, R, S, V or W; -25°C (-13°F) to 40°C (104°F) for switch type I].
Power Requirements: 8 to 30 VDC.
Current Consumption: 21 mA.
Output Signal: 4 to 20 mA.
HART
®
Receive Impedance: Rx = 500 kΩ; Cx = 2500 pF.
Zero and Span Adjustments: Pushbuttons or HART
®
communication 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
(Standard on SAA models).
Rotational Travel: Mark 1 and 4: Maximum: 330°. Mark 3: Minimum: 1.5 revolutions, Maximum: 8.5 revolutions.