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Mid-West
Electrical Installation and Operating Instructions -
Safety
1.0
Before installing, check the Model Number and verify compatibility to the process media and
temperature in contact with the wetted parts. Incompatible media and / or operation at
temperature extremes can cause premature degradation of materials which could result in safety
risk to personnel.
Verify the selected pressure range (differential pressure and working pressure) and the switch
ratings are within specification for your application.
Warning!
The Model 140 product utilizes a diaphragm design which isolates the high process from the low
process. For over pressure conditions (High over Low and Low over High) the diaphragm is
supported at the end of travel for the rated working pressure of the gauge. However, it is
recommended that if large pressure spikes exist, some sort of pressure limiting device should be
installed for protection.
Warning!
precautionary measures when removing and transporting the product.
Warning!
process connection are leak tight. Leakage within a pressure tight (ie NEMA 4X) enclosure could
cause a pressure buildup within the enclosure and cause a burst scenario.
Intended use
1.1
The indicating / non‐indicating differential pressure switches or transmitter are used for monitoring
differential pressures in industrial applications.
The manufacturer shall not be liable for any claims if the product is used in applications contrary to the
intended use.
Personnel
1.2
Personnel installing and putting this instrumentation into service shall be suitably trained and qualified in
accordance with local codes, practices and regulations.
Labeling / Marking
1.3
The following Electrical Configurations bear this mark and comply with the relevant European Directives
identified on the declaration of conformity: A, B, E, F, T, W
The following electrical configurations bear 1 or both of these third party listing agency marks for
product evaluated to both US and Canadian Standards: E, F, W
®
Instrument
Perform all electrical adjustments with power removed.
Remaining media may result in a risk to personnel, environment etc. Use sufficient
If installing product within another enclosure that is pressure tight, please verify all
6 5 0 0 d o b r y d r s t e r l i n g h e i g h t s , m i 4 8 3 1 4
Bulletin No: Elec IM140/18A
Supersedes Elec IM 140/16B
Model 140
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Summary of Contents for Mid-West 140
- Page 1 ® Bulletin No: Elec IM140/18A Mid-West Instrument Supersedes Elec IM 140/16B Model 140 Electrical Installation and Operating Instructions - Safety 1.0 Before installing, check the Model Number and verify compatibility to the process media and temperature in contact with the wetted parts. Incompatible media and / or operation at ...
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Page 2: General Specifications
Model 140 Electrical Installation and Operating Instructions - General Specifications Non‐electrical Limits Parameter Limits(Std) (Hazardous Locations) 1500 (Br Non End) 3000 (AL)* Non Haz‐Loc 3000(Al/SS Non End) Working Pressure(PSI) 1500 (Br) Non Haz‐Loc 2000 (AL/SS End Conn.) 3000 (SS)* Non Haz‐Loc 1625 (Al/SS Nace) Proof Pressure 4X Rated Working Pressure ‐40° to 200° F (Switches) Temperature -20 F to 150 F (Transmitter) Differential Pressure Range ... -
Page 3: Product Description
The rotation of the follower magnet causes the pointer to track the movement of the internal magnet and indicate the differential pressure on the dial scale. The switches are also magnetically operated and are located outside of the pressure housing. The switches are mechanically adjustable allowing the customer to set the switch within a defined adjustment span of the range of the instrument. Transmitter The Model 140 indicating / non‐indicating differential pressure transmitter is a 2 wire loop powered microprocessor based 4‐20 ma transmitter. The magnetic angle sensor & electronics senses the angle (relative to the transmitter sensor) of the magnet which moves linearly in the bore. Each transmitter is individually calibrated to the gauge using an 11 point calibration linearization technique. This method results in a <2% full scale accuracy for the upper 80% of the range. ... -
Page 4: Installation
Model 140 Electrical Installation and Operating Instructions - 4.0 Installation: Mechanical Connections ¼” FNPT are provided standard, however check your paperwork to confirm the connections ordered. There are 2 connections identified on the gauge body as “Hi” and “Lo” for High pressure and Low ... - Page 5 Model 140 Electrical Installation and Operating Instructions - Pipe Mounting Pipe mounting brackets are not available for any Electrical Configurations in the reverse port configuration. Typical 2” Pipe Mounting 5.24 6.22 1.16 2.81 ...
- Page 6 Model 140 Electrical Installation and Operating Instructions - 45° Ø3.00 (76.2) Typical 2 ½” Panel Mount 3.30 Ø3.50 (88.9) 3.39 Ø0.19 (4.7) (4 HOLES) Ø5.30 (134.6) 1.10 Typical 4 ½” Panel Mount Ø5.63 (143.0) BOLT CIRCLE Ø0.19 (4.7) (4 HOLES) 5.30...
- Page 7 Model 140 Electrical Installation and Operating Instructions - Electrical: Warning: Electrical connections should be performed by qualified personnel and meet the representative country's national electrical code. Warning: Failure to connect to the protective conductor terminal may result in a shock hazard. Warning: Perform all switch adjustments with power removed. Use an ohmmeter or equivalent to ...
- Page 8 Model 140 Electrical Installation and Operating Instructions - The reed switch(es) are located inside the enclosure, on the top of the pressure housing (standard port) , and are connected to a 7 position terminal strip. An opening is provided at the rear of the enclosure for a 1/2" flexible weather‐proof cable or conduit connector (supplied by customer) (A & B Electrical Configuration) or a ½” FNPT conduit interface (E & F Electrical Configuration). Upon request the hole may be sized to accommodate a PG‐11 cable gland connector. To access the terminal strip remove the switch enclosure cover by removing the (4) screws. Insert wires ...
- Page 9 Model 140 Electrical Installation and Operating Instructions - Intended use: The Model 142 Transmitter is intended for use in General Purpose Locations (T electrical configuration) or Division 2 hazardous locations (W electrical configuration). In both cases the enclosure carries a NEMA 4X IP65 environmental rating. Description: The transmitter assembly if CE marked is also compliant with EMC Directive 2004/108/EC. The transmitter has a factory programmed low‐pass filter. The filter is set to approximately 1 second. This can be increased or decreased upon customer request at the time of order. Note: The transmitter circuitry senses the position of a magnet. Any magnetic object located near the gauge may affect transmitter accuracy. The transmitter if necessary can be zeroed by jumpering pin 2 to Gnd pin 1 momentarily for 2 seconds (with the unit powered). In most cases this will never be necessary as the transmitter is programmed to generate a 4ma output for the first 4% of the FSR . Warning: If zeroing in the Hazardous Location environment use a switch approved for that location. Caution: Do not zero the transmitter with pressure applied. Otherwise your product will have a ...
- Page 10 Model 140 Electrical Installation and Operating Instructions - Warning: When wiring to the terminal strip, make sure all wire strands are contained within the terminal connection. The maximum loop resistance is 1000 ohms (@ 28Vdc Input). Use the following formula to determine the maximum loop resistance at other input voltages: ((Vs – 8) *1000)/ 20) (Transmitter) Electrical Configuration W: The W Electrical Configuration is 3 party certified for Class I, Division II, Groups A, B, C, & D, Class II, Groups F & G hazardous environments. The CSA mark identifies the product has been tested to the ...
- Page 11 Model 140 Electrical Installation and Operating Instructions - Dimensions (cont.) Electrical Configuration: E or F Electrical Configuration: A or B NEMA 4X METAL ENLOSURE CLASS I, DIV. 2, GROUPS A, B, NEMA 4X 2 ½ INCH DIAL C,D CLASS II, DIV 2, GROUPS F & G 2 ½” DIAL Electrical Configuration: A or B NEMA 4X 4 ½ INCH DIAL ...
- Page 12 Model 140 Electrical Installation and Operating Instructions - 7.0 Troubleshooting A. Gauge accuracy and set point problems: i. Verify your process connections are plumbed properly ii. Verify gauge is not in an electromagnetic / magnetic environment. i.e.; close proximity to high current power lines. iii. Verify the pointer has fluid movement as pressure increases. No movement may indicate a blown diaphragm. iv. All others contact the factory for assistance. B Switch doesn't function i. Make sure that the switch load does not exceed the specified wattage rating of the switch. (steady‐state and transient). Contact factory for assistance for excessive loads, otherwise proceed to the next step. ii. Perform a continuity check of the switch contacts by trying to actuate the switch using an external magnet. An operational switch usually indicates a problem with the gauge. If not operational proceed ...
- Page 13 Model 140 Electrical Installation and Operating Instructions - Pressure Equipment Directive : The Pressure Equipment Directive has been determined to be non‐applicable for CE marking for Group 1 applications below 200 bar or Group 2 applications below 1000 bar.. These products are manufactured in accordance with article 3, paragraph 3 of the directive, “sound engineering practice”. They fall below category I for non‐hazardous gases, hazardous liquids, & non‐hazardous liquids. This product also falls below category I for hazardous gases at or below 200 bar. EMC Directive(2004/108/EC): Optionally, transmitters (Electrical Configurations T & W) may be CE marked for compliance with the EMC Directive 2004/108/EC. The transmitter design has been evaluated to and passed the following “EN” Standards as they relate to the EMC directive. EN 61326:2013 Environment Industrial, Electrical Equipment for measurement, Control and Laboratory use, EMC requirements from which: EN55011:2009 + A1:2010 Emission, Class B...
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