Model M140 Pneumatic Indicator Controller
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• Sophisticated pneumatic controller
• Range of control options
• Direct or reverse acting
• Optional Auto/Manual unit available
A selection of temperature, pressure and humidity pneumatic indicating controllers are offered in 2 main versions. The Clearway M140 is a sophisticated pneumatic controller with robust mechanical sensing systems for temperature, pressure and humidity. The M140 is available with up to 2 term control, namely:
• on/off
• proportional (differential gap) (P)
• proportional + integral (P + I)
• proportional + derivative (P + D)
The controller operates on the motion principle, i.e. the motion from the pneumatic feedback unit balances the motion from the process variable measuring element.
Models - Temperature Controllers
Model | Control Action | Mounting
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M140-111 | On/Off | Wall
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M140-181 | Indicating Transmitter | Wall
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M140-121 | Proportional (or differential gap) | Wall
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M140-131 | Proportional + Integral | Wall
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M140-141 | Proportional + Derivative | Wall
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M140-112 | On/Off | Panel
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M140-182 | Indicating Transmitter | Panel
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M140-122 | Proportional (or differential gap) | Panel
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M140-132 | Proportional + Integral | Panel
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M140-142 | Proportional + Derivative | Panel
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Models - Pressure Controllers
Model | Control Action | Mounting
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M140-311 | On/Off | Wall
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M140-381 | Indicating | Transmitter Wall
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M140-321 | Proportional (or differential gap) | Wall
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M140-331 | Proportional + Integral | Wall
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M140-141 | Proportional + Derivative | Wall
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M140-312 | On/Off | Panel
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M140-382 | Indicating Transmitter | Panel
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M140-322 | Proportional (or differential gap) | Panel
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M140-332 | Proportional + Integral | Panel
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M140-342 | Proportional + Derivative | Panel
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