MF79 Indicating Controller

Datasheet / Manual

A compact, single switch, indicating temperature controller providing on-off control for heating or cooling applications. Twelve operating ranges covering -30° F to 1100° F. Can be panel or surface mounted.

Standard Features:
Black temperature indicating pointer
Red setpoint indicator
Front panel setpoint knob
1% Sensitivity (hysteresis)

Key Specifications
+/- 1% Accuracy
SPDT switch: 500VA resistive, 50VA inductive; 250VAC max.
6.75" W x 5.31" H x 4.0" D

LF15-79 Indicating Dual Switch Controller

Datasheet / Manual

A two switch, indicating temperature controller providing dual on-off control for heat-cool applications. Fifteen operating ranges covering -30° F to 1100° F. Can be panel or surface mounted.

Standard Features:
Black temperature indicating pointer
Red setpoint indicator
Front panel setpoint knob
1% Sensitivity (hysteresis)
0 to 5% Differential between switches

Key Specifications
+/- 1% Accuracy
SPDT switch: 500VA resistive, 50VA inductive; 250VAC max.
8.63" W x 8.0" H x 4.28" D

LFB73-73 Indicating Dual Setpoint Controller

Datasheet / Manual

A dual setpoint, indicating temperature controller providing dual on-off control for heat-cool applications or control and alarming. Fifteen operating ranges covering -30° F to 1100° F. Can be panel or surface mounted.

Standard Features:
Black temperature indicating pointer
Dual red setpoint indicator
Front panel two-position in-out setpoint knob
1% Sensitivity (hysteresis)
1.5% to full scale differential between switches

Key Specifications
+/- 1% Accuracy
SPDT switch: 500VA resistive, 50VA inductive; 250VAC max.
8.63" W x 8.0" H x 4.28" D

LFP Indicating Potentiometric Controller

Datasheet / Manual

An indicating temperature controller for use with position proportioning motors that work with a potentiometer in the controller. Fifteen operating ranges covering -30° F to 1100° F. Can be panel or surface mounted.

Standard Features:
Black temperature indicating pointer
Red setpoint indicator
Front panel setpoint knob
Manual reset for offset adjustment

Key Specifications
+/- 1% Accuracy
100 or 135 ohm potentiometer resistance
Throttling range: 3.5%, 8%, 16%
8.63" W x 8.0" H x 4.28" D

LFA Indicating Pneumatic Controller

Datasheet / Manual

An indicating temperature controller for use with pneumatic devices in heating or cooling applications. Fifteen operating ranges covering -30° F to 1100° F. Can be panel or surface mounted.

Standard Features:
Black temperature indicating pointer
Red setpoint indicator
Front panel setpoint knob
Inlet and outlet gauges
Reverse or direct control action
Manual reset for offset adjustment

Key Specifications
+/- 1% Accuracy
16 psi input
3 to 15 psi output
Air consumption: 6 cfh max.
1/4 NPT air hookups
Throttling span: 5% to 20% of span
8.63" W x 8.0" H x 4.28" D

LFV4 Explosion-Proof Indicating Controller

Datasheet / Manual

An explosion proof, single switch, indicating temperature controller providing on-off control for heating or cooling applications. Fifteen operating ranges covering -30° F to 1100° F. Can be panel or surface mounted.

Standard Features:
Black temperature indicating pointer
Red setpoint indicator
Front panel setpoint knob
1% Sensitivity (hysteresis)

Key Specifications
+/- 1% Accuracy
SPDT switch: 500VA resistive, 50VA inductive; 250VAC max.
8.63"W x 10.19" H x 4.28" D

LFE18 Indicating Time-Proportioning Controller

Datasheet / Manual

An indicating temperature controller providing time proportioning control for heating or cooling applications. Fifteen operating ranges covering -30° F to 1100° F. Can be panel or surface mounted.

Standard Features:
Black temperature indicating pointer
Red setpoint indicator
Front panel setpoint knob
30 Second cycle time

Key Specifications
+/- 1% Accuracy
SPDT switch: 500VA resistive, 50VA inductive; 250VAC max.
8.63" W x 8.0" H x 4.28" D

N79-79 Non-Indicating Dual Switch Controller

Datasheet / Manual

A compact, dual switch, non-indicating temperature controller with unlimited differential between setpoints. Setpoints may be set at the factory or by the user. Used where setpoint changes are seldom needed. Available in a wide variety of ranges covering -30° F to 1100° F. This device is intended for surface mounting.

Standard Features:
Reverse or direct acting
0 to 100% switch differential

Key Specifications
+/- 1% Accuracy
SPDT switches: 500VA non-inductive, 50VA inductive; 250VAC max.
5.44"W x 5.13" H x 2.19" D

ZF79 Non-Indicating Controller

Datasheet / Manual

A single switch, non-indicating temperature controller with front panel setpoint. Twelve temperature ranges covering -30° F to 1100° F. Can be panel or surface mounted.

Standard Features:
1% Sensitivity (hysteresis)

Key Specifications
+/- 1% Accuracy
SPDT switches: 500VA non-inductive, 50VA inductive; 250VAC max.
6.13" W x 5.5" H x 3.5" D overall
4.75" W x 5.0" H panel cutout

Partlow Piston Pak

Datasheet / Manual

Obsolete Product . . .
Contact M&M for options
or current availability.

The Partlow Piston Pak is a fluid filled, hermetically sealed, stainless steel sensing element connected through a temperature compensated stainless steel capillary to a piston-cylinder arrangement. These sensors are rugged, reliable, sensitive, and accurate to within 1%. The capillary requires no armoring and the sensors are easily replaced in the field. Sensors cover the operating ranges from -30° F to 1100° F (-35° C to 600° C). Stainless steel element sleeves and capillary bushings are available, as well as Teflon and Geon element and capillary coatings.