Modus M Series General Eastern Differential Pressure Transmitters The Modus M Series family of differential pressure transmitters measure low pressures, and feature a variety of analog signal outputs with low power consumption. A wide selection of standard pressure ranges and electrical ratings is available. These transmitters feature no moving parts to wear out, reliable long term stability, and are virtually position insensitive. The Modus M Series transmitters are typically used for monitoring cleanroom pressures, HVAC, velocity pressures, bubbler level systems, and leak detection; as well as filter differential, draft, fume hood, and other low pressure applications. The transmitters are housed in a compact heavy duty, gasketted, cast aluminum enclosure designed to Type 4/IP 65. 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 Amphenol Advanced Sensors are outside the gasketted area. Access to the terminals is made through knockouts on the front of the box. A choice of two knockouts and three hole sizes is available to accommodate usage of 1/2 in (12.70 mm) conduit and metric sizes PG11 and PG13. Pluggable terminal block connectors are provided with captive wire protection and captive terminal screws. The Modus M Series includes the M30 Series: • Two-wire • DC Voltage In • 4 to 20 mA out The span or zero adjustment is performed with a 20 turn potentiometer for fine resolution. The Modus M Series transmitters comply with the European requirements of EMC Directive 2004/108/EC, LVD 2006/95/EC and PED 97/23/EC. Operation The pressure sensing element is a differential capacitance cell for pressure measurements ranging from 0.1 in to 5 in (3.04 mm to 127 mm) of water (25 kPa to 1.0 kPa), or piezoresistive (silicon) sensors for pressure measurements ranging from 5 in (127 mm) of water to 10 in (1.0 kPa to 2.5 kPa). The capacitance cell is capable of sensing very low, negative or differential pressures. Standard Pressure Ranges US Units Pressure Code Momentary Overpressure 03E 04E 05E 06E 07E 08E Pressure Range Maximum Safe 0 to 0.300 in H20 0 to 0.500 in H20 0 to 1.00 in H20 0 to 2.00 in H20 0 to 3.00 in H20 0 to 5.00 in H20 20 inH2O - Metric Units, Millimeters of Water Pressure Code Pressure Range Momentary Overpressure 03M 04M 05M 06M 07M 08M 0 to 7.50 mm H20 0 to 10.00 mm H20 0 to 25.0 mm H20 0 to 50.0 mm H20 0 to 75.0 mm H20 0 to 100 mm H20 Maximum Safe 500 mm - A very lightweight, responsive diaphragm within the cell deflects a small amount when a small pressure is applied. This deflection results in a change in capacitance which is then detected and amplified electronically. The piezoresistive sensor is a solid state device designed in a Wheatstone bridge configuration. When pressure is applied to the device, the resistance of the bridge changes by a small amount. The output of the bridge is ratiometric to the supply voltage, and a small change in resistance is detected as a change in output voltage. Metric Units, Pascal Pressure Code Momentary Overpressure 03P 04P 05P 06P 07P 08P Pressure Range Maximum Safe 0 to 75.0 Pa 0 to 100.0 Pa 0 to 250 Pa 0 to 500 Pa 0 to 750 Pa 0 to 1.00 kPa 5 kPa - M Series Specifications 2 mounting holes for #8 (4 mm) maximum screw Performance Accuracy 2.4 in (60 mm) mounting hole ±1% of Span (including non-linearity and hysteresis) 3.6 in (90 mm) 0.6 in (15 mm) Calibration 0.26 in (6.5 mm Traceable to National Institute of Standards and Technology (NIST) 4.0 in (102 mm) mounting holes 4.54 in (115 mm G11, PG13 or 1/2 conduit holes Environmental 1.37 in (35 mm) Storage Temperature 1.35 in (34 mm) -20°F to 160°F (-30°C to 70°C) Effect of Temperature on Span ±0.02%/°C Operating Humidity Range 10% to 90% RH, non-condensing Shock Resistance 10 G (11 ms) Vibration Resistance 5 G to 50 Hz Electrical Connectors Polarized Euro-plug/connectors Connections Pluggable terminal block for wire, 14 to 26 AWG Material Glass filled polyester Physical Dimensions 3.56 in x 4.54 in x 2.18 in (90 mm x 115 mm x 55 mm) Pressure Port 2.5 in (63.5 mm) Effect of Temperature on Zero ±0.05%/°C 1.2 in (30.5 mm) 1.6 in (40.5 mm) 32°F to 115°F (0°C to 45°C) 2.18 in (55 mm) Operating Temperature Range High Low 3.4 in (86.5 mm) Material Aluminum alloy #A380 Cover Screws M4 stainless steel, non-magnetic Finish Black epoxy paint Knockout Choice of 2 holes. Knockout hole sizes 1/2 in (12.70 mm) conduit, PG11 or PG13. Cable glands not included. Pressure Port Connection 3/16 in (4.57 mm) diameter Suitable for: • 1/8 in (3.04 mm) ID Tygon™ or polyurethane tubing 0.11 in to 0.15 in (3 mm to 4 mm) • 1/4 in (6.35 mm) OD polyethylene tubing 0.23 in (6 mm) Weight 1.27 lb (576 g) maximum Integral filters at both ports. Measures differential, gage pressure or vacuum. Suitable for air or inert gases. M30 Specifications Ordering Information Two-wire, 4 to 20 mA output M30 Electrical Supply Voltage 11 to 32 VDC (see diagram below for maximum loop resistance) Protected against reversal of polarity. Output limited to approximately 3.85 mA at low end of span and approximately 27 mA at upper end of span. Code Input Pressure (IP) X See standard pressure ranges tables on page 4 Code Offset (O)* A 1/4 offset B 1/2 offset 0 none Code Knockout Quantity (KQ) 1 One hole 2 Two holes Code Knockout Size (KS) R 1/2 in (12.7 mm) conduit S PG 11 M30 1500 ___ - ___ - ___ - T PG 13 ___ Typical model number. *If the measured differential pressure is expected to go from positive to negative, a transmitter with offset (elevated zero) should be ordered. ce ist an Pressure excursion 0% to 100% of range, see standard pressure ranges tables on page 4 “A” 1/4 span offset. At zero differential pressure, the output signal is: Re s Loop Resistance (W* Three options are available: “0” No offset. At zero differential pressure, the output signal is: 4 mA (4 to 20 mA range) 1000 M ax im um 500 Operating Region • 8 mA (4 to 20 mA range) 0 0 10 20 30 40 Power Supply Voltage *Loop resistance = wire resistance + receiver resistance Pressure excursion -33% to 100% of range see standard pressure ranges tables on page 4 “B” 1/2 span offset. At zero differential pressure, the output signal is: • 12 mA (4 to 20 mA range) Pressure excursion -100% to 100% of range, see standard pressure ranges tables on page 4. To order: Determine the positive pressure range. From standard pressure ranges table on page 4, find the corresponding pressure code. Add the required offset (none, A, or B). Power Supply For example, M30 05E A__, is a transmitter with a maximum range of 1 in of H2O at 20 mA and a minimum range of -0.33 in of H2O at 4 mA. 11 to 32 Vdc Enclosure Ground Receiver Wire 0 to 1050 W Wire Modus M30 Series schematic diagram Amphenol Advanced Sensors www.amphenol-sensors.com © 2014 Amphenol Corporation. All Rights Reserved. Specifications 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. AAS-920-293G-03/2014