About Switch Products
- Hermetically sealed switches
- Grommet Wire Seal or NEMA 4X rated
- Operating Temp. -40º F to +200º F (-40ºC to +93ºC)
- ±2% Accuracy Full Scale Ascending
- Five year Limited Warranty
Factory preset switch at no extra charge (Specify Setting)
Specify increasing or decreasing range to be set.
All switches are field adjustable!
Bulletins/IOMs
Model 120 - 122 Switch Specifications
The standard reed switch is enclosed in a weather-resistant plastic housing. Adjustment of the switch setting is made with an external screw adjustment. The switch functionality will be different for gauges with bi-directional operation for positive and negative delta pressure. For example a SPDT switch with positive .P applied to the gauge, the red wire will be N.O. and the black will be N.C.
For negative .P the functionality will be reversed. Location for a single SPDT (grommet or conduit) switch will be on the bottom of the gauge body for a normal port and on the top for a reverse port. 3rd Party Certified Explosion Proof enclosures with SPDT or SPST switches rated Class l, Div 1, Groups C & D, Class ll, Div 2 Groups E, F, & G and Hazardous location Class l, Div 2, Groups A, B, C & D, Class II, Div 2 Groups F, & G are available. Please contact Mid-West direct at 1-800-648-5778.
OPTION |
MODEL 120 ELECTRICAL SWITCH CONFIGURATIONS (CE marked) |
| A | One (1) Switch in standard enclosure with grommet Wire Seal (adjustable 10-90% of full scale range) |
| B | Two (2) Switches in standard enclosures with grommet Wire Seal (adjustable 10-90% of full scale range) |
| C | One (1) Switch in standard enclosure with 1/4" FNPT electrical connection NEMA 4X (adjustable 10-90% of full scale range) |
| D | Two (2) Switches in standard enclosures with 1/4" FNPT electrical connection NEMA 4X (adjustable 10-90% of full scale range) |
| L | One (1) Switch in standard enclosure with plug-in connector (DIN 43650/IP65-PG11) (adjustable 10-90% of full scale range) |
| M | Two (2) Switches in standard enclosures with plug-in connector (DIN 43650/IP65-PG11) (adjustable 10-90% of full scale range) |
(1) & (2) switch Division l or Division ll for Hazardous locations available. Please contact Mid-West at 1-800-648-5778 |
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OPTION |
MODEL 122 ELECTRICAL SWITCH CONFIGURATIONS (CE marked) |
| M | One (1) Reed switch (clamp-on) (adjustable 10-100% of full scale range) |
| N | Two (2) Reed switches (clamp-on) (adjustable 10-100% of full scale range) |
OPTION |
ELECTRICAL SPECIFICATIONS (For Resistive Loads) |
| A | SPDT 3W, 0.25 Amp, 125 VAC/VDC (standard) |
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SPST 60W 3.0 Amp & SPDT 60W 1.0 Amp 240 VAC/VDC available Please contact Mid-West at 1-800-648-5778 |
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