Richards Analog Panel Mount Meters are available for both Type K and Type J thermocouples. It is important to note that the M10-K, M10-J, and the M11-J meters have a external resistance of 10 Ohms. In order to maintain the accuracy of the readings, the total resistance of the thermocouple and extension wires combined must be equal to 10 Ohms. The M1 unit has 1 Ohm external resistance. This requires the total resistance of the thermocouple and extension wires combined to be equal to 1 Ohm. The M1 meter is normally used in our portable molten metal handle assembly, but they may be used in situations where long extension wires are not required. The M10 and M11 type instruments are usually used in situations where longer extension wires are needed.

Note: Resistance values for thermocouple and extension wire can be found in the engineering section of our Richards Catalog Number 15.

Panel Meters- For general use.
Catalog Number	Range	Type	External Resistance Ohms
M10-K	-20 to 1370°C (0 to 2500°F)	K	10
M10-J	-20 to 540°C (0 to 1000°F)	J	10
M11-J	-20 to 540°C (0 to 1000°F)	J	10
Mounting Dimensions-in millimeters
Face Width-148.5mm Face Height-117mm Max Depth-49mm Face thickness (protrusion)-15mm 4 bolt pattern-132.5mm x 78mm Stud size-#6-32NC-2 Studs for wire connections are 1/4-28UNF-2A with 1 nut and 2 washers

Portable Pyrometer Meters
Catalog Number	Range	Type	External  Resistance Ohms
M1	0 to 1370°C (0 to 2500°F)	K	1
Normally used in a portable Molten Metal handle, but may be used as a panel meter where long extension wires are not needed, such as on a small kiln, or as a meter attached to a swaged type thermocouple. Both of these items can be found on their individual web pages.