Brochure

AK-52101

Differential Logic Module Relay

Model Chart

Specifications

Pneumatic differential logic module relay typically

used for comparison of outdoor and return air

enthalpy transmitters to position the outdoor and

return air dampers, providing energy conservation,

when the outdoor air enthalpy is higher than the

return air enthalpy.

Features:

Compares two pneumatic signals; provides a high-gain

pneumatic output pressure change based on the input signal

comparison.

Model No. Input Pressures Output Pressure

AK-52101

“1” equal or less than input “2” Less than 3 psig (21 kPa).

“1” greater than input “2”

Greater than 13 psig (90 kPa) when supply to port “M” is 15 psig (103 kPa) or higher.

Max. output, supply at port “M”.

Output pressure vs. input pressures Refer to Model Chart.

Construction

Housing Base, zinc plated steel; cover, aluminum.

Relay diaphragm Neoprene coated, continuous fabric.

Bias adjustment Compensation for transmitter input and system variations.

Air pressure Clean, oil free, dry air required (reference EN-123).

Maximum 30 psig (207 kPa).

Ambient limits

Shipping temperatures -40 to 150qF (-40 to 65qC).

Operating temperatures 40 to 150qF (4 to 65qC).

Humidity 0 to 98% RH, non-condensing.

Air connection code Refer to Figure 1.

Air connections Barbed for 1/4 in. O.D. plastic tubing.

Air consumption for sizing air

compressor

41.5 scim(11.3 mL/s) at 20 psig (138 kPa). When supplied by a controller 0 scim (0 mL/s).

Air capacity for sizing air mains 48 scim (13.2 mL/s) at 20 psig (138 kPa) supply.

Mounting Panel or wall, three mounting holes are provided for No. 8 or No. 10 screws.

Dimensions 6 H x 3-3/8 W x 3-1/16 D in. (152 x 86 x 78 mm).

52101