The Invensys TKR-1281 pneumatic thermostat is for proportional temperature control of pneumatically-actuated valves and damper actuators to maintain
room air temperatures in heating, ventilating, and air conditioning systems.
Features
The TKR-1281 includes an attractive appearance, setpoint and thermometer, blank cover or covers with exposed setpoint and thermometer, a bimetal sensing element and adjustable throttling range.
Product Specifications
| Thermostat |
Pneumatic proportional |
| Sensing element |
Bimetal |
| Control dial range |
55° to 85°F (13° to 29°C) |
| Setpoint pressure |
9 psig (62 kPa) |
| Ambient temp |
40° to 150°F (4° to 65°C) |
| Supply air |
Dry, clean, and oil free |
| Mounting |
Upright position on wall |
| Throttling range |
Adjustable 2° to 10°F (1.1° to 5.5°C),
factory set @ 4°F (2.2°C) |
| Supply pressure |
15 or 20 psig (103 or 138 kPa), 30
psig (207 kPa) max |
| Connections |
5/32" spring-reinforced plastic tube |
| Cover |
Beige plastic with setpoint and
thermometer, blank cover provided |
| Dimensions |
4.38"H x 2.75"W x 1.63"D (11.13 x 6.99
x 4.14 cm) |
| Weight |
0.4 lb (0.18 kg) |
| Application |
Heating and Cooling |
| Thermostat Type |
Two-Pipe |
| Control Action Supply Pressure psif
(kPa) |
15(103) Direct-acting
20(138) Reverse-acting |
| Dial Markings |
55 - 85 F |