Brochure
TK-6xxx Series, TK-8xxx Series
150
© Copyright 2006 TAC. All Rights Reserved. F-27383-1
Relay Bulb Thermostats
Model Chart
Specifications
For proportional temperature control of pneumatic
valves and actuators to maintain air or liquid
temperatures in duct, plenum chambers, liquid
lines, tanks, etc. May also be used as a low limit
thermostat.
Features:
• Two-pipe (Main and Branch) controllers.
• Direct or Reverse Action.
• Liquid-filled sensing elements: Remote-bulb with 6 ft.
(1.8 m) capillary, or 8 ft. (2.44 m) averaging element.
• Field-adjustable throttling range.
Model No. Action
Bulb
Style Dimensions
TK-6024
D.A.
a
a
Direct Acting (D.A.) Increase output pressure on temperature rise.
Reverse Acting (R.A.) Decrease output pressure on temperature rise.
Straight 3/8 x 4-5/8 in. (9.5 x 117 mm).
TK-8024 Averaging 3/32 in.x 8 ft. (2.4 mm x 2.4 m).
TK-6124
R.A.
a
Straight 3/8 x 4-5/8 in. (9.5 x 117 mm).
TK-8124 Averaging 3/32 in. x 8 ft. (2.4 mm x 2.4 m).
Thermostat Proportional two pipe type. Thermostats are ambient compensated.
Sensing element Remote liquid-filled copper.
Control dial range -20 to 240qF (-29 to 115qC). Shipped as -20 to 120qF, reverse side of dial 100 to 240qF.
Throttling range Adjustable 3 to 35qF/10 psi (2 to 19qC/69 kPa) change in output, factory set at 5qF (3qC).
Output air signal 0.5 psig (3.4 kPa) to supply air pressure -0.5 psig (-3.4 kPa).
Action Refer to Model Chart.
Ambient limits
Shipping -40 to 150qF (-40 to 65qC). 0 to 98% R.H., non-condensing.
Case operating 40 to 150qF (4 to 65qC). 10 to 98% R.H., non-condensing.
Bulb 310qF (154qC) maximum.
Supply air pressure Clean, oil free, dry air required (reference EN-123).
Nominal 20 psig (138 kPa).
Minimum 15 psig (103 kPa).
Maximum 30 psig (207 kPa).
Air connections 1/8 in. FNPT for main, branches, and AL-362 gages (not included).
Air consumption for sizing air
compressor
13.8 scim (3.8 mL/s).
Air capacity for sizing air mains 16 scim (4.4 mL/s).
Mounting Upright position on a wall or vertical flat surface.
Bulb dimensions Refer to Model Chart.
Capillary length 6 ft. (1.8 m).
Case dimensions 5-13/16 H x 6-3/16 W x 4 D in. (148 x 157 x 102 mm).
TK
-
6
xxx
Series,
TK-8xxx
Series
TK-6024 Shown