Honeywell 2728 Proportional Pneumatic Controller Direct Acting Dual Sensor.

R.A./D.A. PNUEMATIC-ELECTRIC SWITCH R-B ON FALL SP

Free-maintenance PNUEMATIC-ELECTRIC SWITCH with direct action for DC and AC drive applications in fan applications. "ON" type, voltage 20 VDC, power max. 1 W, resistance > 10 MOhm, 5 %, function R-B on fall, connector 3/4 female spigot terminals or soldering pins.

The Honeywell 2728 is a proportional pneumatic actuator with an R.A./D.A. position controller that uses two sensors to provide variable input velocity to a direct acting dual-port valve rated up to 3100 psig in a 2" NPT body with 1/8 NPT stem ports.

The HONEYWELL DSC2700 is a pneumatic-electric switch designed for single-acting electric actuators to control an air motor. It is housed in a compact, molded plastic case and has 2 sensor ports. The selectable logic controller A/B selects one of the two sensors which controls the directional air motor. The built-in redundancy mode protects against failure of a single sensor.

Outside air temperature controller, M-A/F-A, suitable for outdoor unit up to 35HP in NIB USV. Ambient temperature sensor TE-TKG1C, A/F. Differential temperature sensor TE-TKH18, 2 pairs, 0/100. Air flow sensor TE-LFM5NTC. High pressure port 3/8", low pressure port 1/4". Solenoid valve with check valve 5VDC or 220VAC/0

The 2728 Series is a double pole and double throw switch for use with a wide variety of pneumatic control needs. This proportional air operated switch includes an on-off safety function, LED indicators for the incoming signal, and adjustable response times. The standard air capacity range is from 0.25 to 100 cfm (0.07 to 3.4 m3/sec.) with a minimum flow capability of 0.03 cfm (0.002 m3/sec.). Switches are available in normally closed or normally open configurations and can be user-adjusted to match the specific system requiring an application

This dual-sensor controller is used for on/off control of a proportional pneumatic. It uses two air flow sensors and an optional three-way shut-off relay to control the supply of air pressure to a pneumatic, on or off, with changing demands. It also can operate as a limit switch by using one or both of the sensors for closing and/or opening control loops. The controller is capable of handling small supply lines (ranging from 0.018" to 0.054") and large demand lines (up to 1.0" in diameter).