The M-35 Microminiature Process Meter is the solution when panel space is limited or the size and weight of the indicator must be as small as possible. The bezel measures only 24 x 48 mm (0.94" x 1.89"), yet the height of the red LED digits is a full 10 mm (0.4").
The M-35 is a fully scaleable 3-1/2 digit process meter for DC and process signals. It is powered from 10-30 Vdc, so that it can run off batteries. Power and signal are isolated to 750 Vac to facilitate panel design, with no worries about ground loop errors. A detachable screw terminal connector provides a benefit rarely found on meters of this size.
The 4-20 mA proces signal range and DC voltage ranges from ±2V to ±200V and DC current ranges of 0-20 mA or 0-50 mA are jumper selectable. Zero and span adjustment are easy screwdriver adjustments ar the back of the meter/.
Small size, low weight, and isolated DC power make the M-35 ideal for portable test equipment.
The above diagram for a typical pressure monitoring / manometer application shows how simple the M-35 is to connect. The same DC source powers the transducer and meter. Only three field wires are required.
A removable screw terminal is standard. The connector pin assignments as well as the zero and span adjustments are clearly labeled on the back of the meter.
|Signal ranges||4-20 mA, 10-50 mA, 0-10V, 0-200V|
|Input resistance||181Ω, 68Ω, 188 kΩ, 940 kΩ|
|Scaling method||Zero & span potentiometers|
|A/D conversion||Dual slope integration|
|Accuracy||±0.2% of range|
|Number of digits||3-1/2|
|Display type||Red LED|
|Digit height||10 mm (0.39")|
|Decimal point selection||Plug-in jumpers behind front panel|
|Signal isolation||750 Vac|
|Power to meter||10-30 Vdc, 0.6 W|
|Bezel dimensions||24 x 48 mm (0.94" x 1.89"), H x W|
|Panel cutout||22.5 x 45 mm (0.89" x 1.77"), H x W|
|Depth behind panel||68 mm (2.68") including connector|
|Electrical connections||Four screw terminals, detachable connector|
|Weight||60 g (2 oz)|
|Operating temperature||-20°C to 60°C (-4°F to 140°F)|
|Storage temperature||-40°C to 80°C (-40°F to 176°F)|