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Honeywell L91 Proportional Pressuretrol® Controllers

Proportional Pressuretrol® Controllers
L91

Modulating pressure operating control for regulation of liquid or air and other non-corrosive gases.

• Use with steam, air, noncombustible gases, or other fluids noncorrosive to the brass or phos-bronze (300 psi models) bellows.
• Do NOT use with combustible mediums or any medium chemically harmful to phos-bronze bellows (10-300 psi models) or brass bellows (all other pressure range models).

Select a link under the "item" tab below to order.

Cat #MountingOperating Pressure Range (psi)(psi)Pressure Differential (psi)Modulating Output
L91A1037optional surface mount through back of case0 to 15 psi25 psi0.5 psiSingle potentiometer, 140 ohms
L91A1052optional surface mount through back of case5 to 150 psi225 psi5 psiSingle potentiometer, 140 ohms
L91A1078optional surface mount through back of case10 to 300 psi325 psi12 psiSingle potentiometer, 140 ohms
L91A1136optional surface mount through back of case10 to 300 psi325 psi12 psiSingle potentiometer, 140 ohms
L91B1035optional surface mount through back of case0 to 15 psi25 psi1.5 to 12 psiSingle potentiometer, 140 ohmsSingle potentiometer, 140 ohms
L91B1050optional surface mount through back of case5 to 150 psi225 psi5 to 23 psiSingle potentiometer, 140 ohms
L91B1068optional surface mount through back of case10 to 300 psi325 psi28 to 110 psiSingle potentiometer, 140 ohms
L91B11001/4 in BSP-TR thread Mounting5 to 150 psi225 psi5 to 23 psiSingle potentiometer, 135 ohms
L91B11181/4 in BSP-TR thread Mounting10 to 300 psi325 psi28 to 110 psiSingle potentiometer, 140 ohms
L91B1241optional surface mount through back of case10 to 300 psi325 psi12 to 48 psiSingle potentiometer, 140 ohms
L91D1015optional surface mount through back of case0 to 15 psi25 psi1.5 to 12 psiDual potentiometer, 140 ohms
L91D1031optional surface mount through back of case5 to 150 psi225 psi11 to 52 psiDual potentiometer, 140 ohms
L91D1049optional surface mount through back of case10 to 300 psi325 psi28 to 110 psiDual potentiometer, 140 ohms
Application Modulating pressure control for regulation of liquid, air, or other non-corrosive gases.
Pipe Connections, Main or High Pressure 1/4 in. NPT external thread
Electrical Connections Screw terminals
Sensor Element Brass bellows
Switch Operation Modulating
Temperature Range 32 F to 150 F (0 C to 66 C)


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