W Series Pressure Transmitter
The Series W pressure transmitters are designed to measure low differential pressures of liquids or gases. A wide selection of standard pressure ranges and electrical ratings is available. These transmitters feature: no moving parts to wear out, proven long term stability of piezoresistive devices, only 316 stainless steel in contact with the fluid, and all welded construction.
Series W transmitters are an excellent choice for many HVAC, process and automation monitoring requirements. Typical applications include measurement of differential pressure across flow elements, heat exchangers, pumps, filters, liquid level monitoring and other demanding differential pressure measurement and control applications.
The transmitters are housed in a compact heavy duty gasketted cast aluminum enclosure designed to IP 65 of IEC 529 standards and NEMA 4. The die cast aluminum enclosure incorporates a recessed neoprene gasket to prevent ingress of moisture or dust. Wall mounting holes are enclosed in the cast aluminum box and concealed by the cover. The wall mounting holes and the cover attaching screws are outside the gasketted area. Access to the electrical terminals are made through knockouts on the front of the box. A choice of one or two knockouts and three hole sizes is available to accommodate usage of 1/2" conduit or metric sizes PG11 and PG13. Pluggable terminal block connectors are provided with wire protection and captive terminal screws.
The Series W includes four models: Model W10, Model W20, Model W30 and Model W40. These four models incorporate a variety of power and signal options. The span or zero adjustment is performed with a 20-turn potentiometer for fine resolution. A 50% adjustment in output is possible.
The Series W transmitters have been tested by an accredited laboratory and comply with the European requirements of Council Directive 89/336/EEC for emission measurements per EN50081-1 and immunity tests per EN50082-1.
- ± 0.5% Accuracy, Full-Span
- Rugged NEMA 4/IP 65 Rated Aluminum Enclosure
- Stability-Proven Piezoresistive Sensor
- 0-5V, 0-10V and 4-20 mA Outputs
- DC & 24, 120, 240 VAC Power Inputs
- Reverse Polarity Protected
- NIST Traceable Calibration
- CE Approved
- HVAC Process and Automation
- Liquid Differential Pressure Measurement
- Liquid Level Monitoring
|Accuracy||±1/2% of differential pressure range (includes non-linearity and hysteresis) or ±1% for 6 psid (50 kPA) range|
|Effect of Static Pressure on Differential Pressure Measurement||Less than ±0.25% for static pressure change from 0 to 100% or ±0.5% for 6 psid (50 kPa) range|
|Calibration||Traceable to National Institute of Standards and Technology (NIST)|
|Process wetted surfaces are 316 stainless steel.|
|Operating Temperature Range||32°F to 122°F (0°C to 50°C)|
|Storage Temperature||-20°F to 160°F (-30°C to 70°C)|
|Effect of Temperature||
|Operating Humidity Range||10% to 90% RH, non-condensing|
|Shock Resistance||10 G (11 ms)|
|Vibration Resistance||5 G 3 to 50 Hz|
|Polarized Euro plug/connectors.|
|Connector rating||10 Amps/300 V|
|Dimensions||3.56 in x 4.54 in x 2.18 in (90 mm x 115 mm x 55 mm)|
|Enclosure material||Aluminum Alloy #A380|
|Cover screws||M4 stainless steel non-magnetic|
|Finish||Black epoxy paint|
|Pressure port connections||1/8-28 female NPT|
|Weight||1.2 lb (540 g)|
|Supply Voltage||11 to 32 VDC (See diagram for maximum loop resistance)|
|Output||Two-wire/4 to 20 mA output
Protected against reversal of polarity. Output limited to approximately 3.85 mA at low end of span and approximately 25 mA at upper end of span.
Standard Pressure Ranges for Modus W Series
|Modus Series W Differential Pressure Transmitters|