Halward

Compressed air in-line heater packages with unique features to ensure variable compressed air temperature control from 20⁰C (68⁰ F) to 120⁰C (2Å8⁰F), ideally suitable for industrial or breathing air applications.

The compressed air line heater system uses an open wound Y type heating coil and a high accuracy output temperature sensing device. This combination of fast responding heater and sensor allows the unit to adiust quickly to any variations in flow rate or line pressure, without deviation in the output temperature.

The heater is controlled by a compact solid state temperature controller mounted on top of the unit. The temperature is set using a rotary knob located at the top of the unit. The exact temperature output is indicated by a bi-metallic thermometer clearly visible at the front of the heater, providing an independent indication of controller operation.

Alternatively we can also use a PT 100 sensor and controller to adjust the heater coil operations to maintain the required temperature. And the temperature can be displayed on the control panel screen. You can also take a signal from the control panel for your PLC operations or remote indication.

Heaters can also be supplied, directly mounted to Halward Filtration pre-filters to ensure that process air is clean.

ONLINE DEW POINT TRANSMITTER

Make : Stork, UK or Equivalent 
Model : Dewcom
Range : -100 to +20 Deg C 
Output : 4-20 mA
Accuracy : +/- 2 Deg C 
Connection : 5/8" - 18 UNF
Power Supply : 8-36 VDC
Operating Temperature : -40 to + 60 Deg C
Operating Pressure : Absolute to 450 Barg
Protection : IP65 Without Display

FEATURES :
Besides main functions and features of 8716 , the meter triple combination displays: 
Humidity / T1, T2, or Humidity T1-T2, 
Humidity / Dew Point and Wet Bulb 
Humidity / T2 (external sensor) and Dew Point
Humidity/Dew Point and Delta T (T2-DP)

SPECIFICATIONS
Temperature Range : -20~ +50 C(- 4~ +122 F)RH% Range : 0~100%RHWet Blub Range : -21 .6~50 .0 C(-6 .9~122 F)Dew Point Range : -78 .7~50 .0 C(-109 .7~122 F)External Temp . Range :-20~ +70 C(- 4~ +158 F)Accuracy : RH% : ±3% at 25 CTemperature : ±1 F(0 .6 C

Inclusive of
1. Flow Meter
2. Filter  and Regulator
3. Pressure Gauge
4. Inlet and Outlet Valve
5. Sampling Cell in SS Construction

Timer-Controlled:
Also called direct acting drains, these drains incorporate a solenoid valve and an electric timer. The timer usually has two settings: time between valve openings (usually in minutes) and amount of time the valve stays open (usually in seconds). The drain comes with an electrical cord that can be plugged into a wall outlet. By matching these two settings to the amount of condensate a system produces the condensate can be removed from the compressed air system. The goal is to set the timer long enough to empty all of the condensate but not so long that compressed air is wasted. A combination isolation valve and strainer, if not standard, is highly recommended. This keeps objects from plugging the orifice inside the automatic drain valve, which will keep condensate from being released.

Types of Timer-Controlled Drain Valves:

• Standard Electronic Timer-Controlled  
• Diaphragm (large valve orifice) 
• Motorized Ball.

Diaphragm Drain Valve:

• Diaphragm style electronic drain valves have larger orifices than most direct acting drain valves. Because of the larger orifice it is generally accepted diaphragm drain valves are less likely to foul than direct acting valves. 
• Diaphragm drain valves do use more compressed air than their direct acting cousins. In the end, the choice between direct acting and diaphragm drain valves is really a coin toss. Both are good electronic drain valves and can be used in the same applications. A strainer should be used with a diaphragm valve in dirty applications.

Motorized Ball Drain Valve
If you need to drain an air receiver or other similar pressure vessel the best choice is a ball valve drain. Compared to other types of drain valves ball valve drains are not affected as quickly by dirt, oily sludge, rust, and the other gunk that comes out of receiver tanks. Motorized ball valve drains with timers are a little more expensive than direct acting drains, however the headaches saved probably make the expense worthwhile. 

When you have a large amount of pipe scale and other gunk your best choice is a ball valve style drain valve.Common dirty drain valve applications include:

• Air receivers (tanks) 
• Deliquescent air dryers 
• After-cooler separators