modus w series general eastern liquid differential pressure transmitters the modus w series 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, a proven long term stability of piezoresistive devices, only 316 stainless steel in contact with the fuid, and an all-welded construction. modus w series transmitters are an excellent choice for many hvac, process and automation monitoring requirements. typical applications include measurement of differential pressure across fow elements, heat exchangers, pumps and flters, 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 type 4. the die cast aluminum enclosure incorporates a recessed neoprene gasket to prevent the 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 two knockouts and three hole sizes are available to accommodate usage of 0.5 in (12.7 mm) conduit or metric sizes pg11 and pg13. pluggable terminal block connectors are provided with wire protection and captive terminal screws. the modus w series includes one model: model w30. a mphenol advanced sensors
this model is available with the following power and signal confguration: model w30 ? two-wire ? dc voltage in ? 4 to 20 ma out the span or zero adjustment is performed with a 20-turn potentiometer for fne resolution. a 50% adjustment in output is possible. the series w transmitters comply with the european requirements of council directive 2004/108/ec. operation the pressure transmitter consists of two high accuracy piezoresistive sensors with stainless steel isolation diaphragms. both sensors measure static pressure, and the difference between these two measurements is computed electronically. the use of high accuracy and stable sensors makes this measurement possible. since each sensor measures the full static pressure, there is no possibility of over-pressurizing the transmitter if one sensor is disconnected from the line. no complex and/ or expensive balancing valves are needed.
w series specifcations performance 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) environmental process wetted surfaces are 316 stainless steel. operating temperature range 32f to 122f (0c to 50c) storage temperature -20f to 160f (-30c to 70c) effect of temperature ? on zero: 0.05%/c or 0.1%/c for 6 psid (50 kpa) range ? on span: 0.03%/c or 0.06%/c for 6 psid (50 kpa) range operating humidity range 10% to 90% rh, non-condensing shock resistance 10 g (11 ms) vibration resistance 5 g 3 to 50 hz electrical connectors polarized euro plug/connectors. connections pluggable terminal block for wire 14 to 26 awg. mating connector is supplied connection to enclosure ground is provided. connector rating 10 amps/300 v material glass-flled polyester physical 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 knockout ? choice of 2 holes ? hole sizes are offered in a choice of 1/2 in (12.7 mm) conduit or metric sizes of pg11 or pg13. ? cable glands not included. pressure port connections 1/8-28 female npt weight 1.2 lb (540 g)
w30 series specifcations electrical 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 pressure code differential pressure range, psid operating static pressure, psi 31e 0 to 6 psi 32e 0 to 10 psi 0 to 100 psi 33e 0 to 15 psi 34e 0 to 30 psi 35e 0 to 60 psi 36e 0 to 100 psi 0 to 300 psi 37e 0 to 150 psi 38e 0 to 200 psi us units pressure code differential pressure range, kpa operating static pressure, kpa 31p 0 to 50 pa 32p 0 to 75 pa 0 to 700 kpa* 33p 0 to 100 pa 34p 0 to 200 pa 35p 0 to 500 pa 36p 0 to 750 pa 0 to 2000 kpa 37p 0 to 1000 pa 38p 0 to 1500pa metric units, pascal pressure code differential pressure range, k mm h 2 o operating static pressure, k mm h 2 o 31m 0 to 5.0 k mm h 2 0 32m 0 to 7.5 k mm h 2 0 0 to 70 k mm h 2 0 33m 0 to 10 k mm h 2 0 34m 0 to 20 k mm h 2 0 35m 0 to 50 k mm h 2 0 36m 0 to 75 k mm h 2 0 0 to 200 k mm h 2 0 37m 0 to 100 k mm h 2 0 38m 0 to 150 k mm h 2 0 metric units, millimeters of water ordering information record selected option in blank indicated at bottom of form. w30 code pressure range (ppp) x see standard pressure ranges tables code knockout quantity (kq) 2 two holes code knockout size (ks) r 1/2 in (12.7 mm) conduit s pg 11 w30 - ___ - ___ - ___ typical model number. + - 11 to 3 2 v d c power supply voltage oop resistance wire resistance receiver resistance loop resistance ( w)* 0 10 20 30 maximum resistance operating region power supply 1 2 3 4 wire wire receiver 0 to 1050 w - + enclosure ground aas-920-301b-03/2014 www.amphenol-sensors.com ? 2014 amphenol corporation. all rights reserved. specifcations are subject to change without notice. other company names and product names used in this document are the registered trademarks or trademarks of their respective owners. a mphenol advanced sensors
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