Simpson Mini M135 Series 3-1/2 Digit DC Current Digital Panel Meter

SKU
M135-DCA
Manufacturer:
Simpson
Simpson

Key Features:

  • Minimum Depth Indicator - Less than 1.25" (31.75mm) of Space Required Behind the Panel
  • Fits 3/64 DIN Cutout, 22mm x 68mm
  • 3-1/2 Digit, 0.5" (12.7mm) High LCD
  • User-Selectable Decimal Point
  • Optional Negative Image, Bright Red Backlighting
  • 12 Pin Mating Connector With 6" Lead Wires Included
  • Display Hold Standard on All Units
  • Four Current Ranges: 200 uA, 2mA, 20mA, 200mA
  • Three Power Supply Alternatives: 5VDC, +/-5VDC or 9VDC (With Low Battery Indication)
Product Options:

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$116.15

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The Simpson Mini DC Current Indicators provide high quality, accuracy, and reliability in a compact 12mm deep case. M135 has a 3-1/2 digit, 0.5” LCD display and is available with a negative image, bright red backlight option. Mini M135s feature user-selectable decimal point and display hold.

Three power supply choices are available, and a low battery indication is provided for 9VDC battery applications. Mini units feature a standard 3/64 DIN high-impact plastic case. The standard LCD units have a clear viewing window. The units with optional negative image, bright red backlighting, have a red window.

DISPLAY

Type

7- segment LCD

Height

0.5” (12.7mm)

Decimal Point Position

User-Selectable

Overrange Indication

Most significant = “1” other digits blank

Backlighting

Optional negative image, red backlighting at

5, 10. 12, 24 or 48 DCV

 

Polarity

Auto with “-” indication, “+” indication implied

 

POWER REQUIREMENTS

DC Power

±5V, +5V and +9V

Low Power Indication included with 9V units

Power supply current

2mA max

Backlight supply current

50mA typical

For 24 and 48 DCV, 10mA typical

 

ACCURACY @ 25°C

3 1/2 digit: ± (0.1% of reading + 1 count)

 

4 1/2 digit: ± (0.04% of reading + 1 count)

 

ENVIRONMENTAL

Operating Temperature

0 to 55ºC

Storage Temperature

-10 to 60°C

Relative Humidity

0 to 85° non-condensing @ 40°C

Warmup time

Less than 20 minutes

Temperature Coefficient

(All inputs)

± (0.02% of input ± 0.2 digit) / °C

 

NOISE REJECTION

NMRR

60dB, 50/60 Hz

CMRR

(with 1KΩ unbalanced @ 60Hz) 90dB min

 

A TO D CONVERSION

Technique

Integrating

Rate

3 samples/second-typical

 

MECHANICAL

Bezel

0.94” x 2.83”

Depth

0.43”

Panel cutout

0.89” x 2.71” (22.6 mm x 68.8 mm)

Weight

1.0 oz. (28.3 g)

Case Material

94-VO, UL-rated ABS

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