Simpson M145 Series Negative Red Backlight Panel Meters

4-1/2 BKLT, 9VDC PWR, 20 VDC, 5VDC
3/64 DIN Indicator
Minimum depth - requires less than 0.7" (17mm) behind the panel
Snaps right into panel - no mounting hardware required

DC Voltage

Simpson’s Mini DC Voltage Indicators provide high quality, accuracy, and reliability in a compact 12mm deep case. M145 has a 4-1/2 digit, 0.5" LCD display and is available with a negative image, bright red backlight option. Mini M145s feature user-selectable decimal point and display hold.

DC Current

Simpson’s Mini DC Current Indicators provide high quality, accuracy and reliability in a compact 12mm deep case. M145 has a 4-1/2 digit, 0.5" LCD display and is available with a negative image, bright red backlight option. Mini M145s 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.

Mounting Requirements

The Mini indicators require a panel cutout of 2.71" (68.8mm) wide by 0.89" (22.6mm) high, and a panel area of 0.94" (24mm) high by 2.83" (72mm) wide.
The depth behind the panel, including terminals, is 0.7" (17.8mm).
The front bezel protrudes 0.16" (4mm) from the front of the mounting surface.
The unit will snap-mount into panels from 0.050" to 0.125" thick.
A 12-pin connector with 6" wire leads is included with each unit for quick installation.

General Specifications
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
Input Specifications
Range	M135 Resolution	Input Impedance	Max Input (Unfused)
200mV	100μV	>100MΩ	50V
2V	1mV	10MΩ	250V
20V	10mV	10MΩ	250V
200V	100mV	10MΩ	250V
DC Current
Range	M135 Resolution	Voltage Drop	Max Input (Unfused)
200μA	100nA	200mV	10mA
2mA	1μA	200mV	40mA
20mA	10μA	200mV	100mA
200mA	100μA	200mV	400mA

Temperature / PID Controllers
Size Rectangular	Other Size Rectangular 3/64 DIN
Panel Meters/Panel Meters Template
Type (Panel Meter )	Digital
Style (Panel Meter)	Rectangular/Square
Number of Inputs (Panel Meters)	Single
Mounting (Panel Meter)	Panel Mount
Input (Panel Meters)	Voltage
Size-Face Width	Other
Process Output	No
Control / Alarm Setpoints	No
Water Proof	No
Splash Proof	No
Relay Output	No
Test Equipment General Attributes
Country of Origin	United States

0

Name: Simpson M14512131 Panel Meter
Brand: Simpson
SKU: SimpsonM14512131
Price: 183.58 USD
Availability: InStock

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Product	Simpson M14512131 4-1/2 BKLT, 9VDC PWR, 20 VDC, 5VDC	Simpson M14512121 4-1/2 BKLT, 9VDC PWR, 2VDC, 5VDC	Simpson M14512231 4-1/2 BKLT,9VDC PWR,20 MADC	Simpson M14512134 4-1/2 BKLT, 9VDC PWR, 20VDC,24VDC	Simpson M14512124 4-1/2 BKLT, 9VDC PWR, 2VDC, 24VDC	Simpson M14511231 4-1/2 BKLT,+/-5VDC PWR,20MADC	Simpson M14511241 4-1/2 BKLT, +/-5VDC PWR,200MADC	Simpson M14511211 4-1/2 BKLT,+/-5VDC PWR,200UADC,5V	Simpson M14512141 4-1/2 BKLT, 9VDC PWR, 200VDC, 5V	Simpson M14512144 4-1/2 BKLT, 9VDC PWR, 200VDC,24VDC	Simpson M14512142 4-1/2 BKLT, 9VDC PWR, 200VDC, 10V
Price	$183.58	$175.92	$175.92	$175.92	$175.92	$175.92	$175.92	$182.94	$183.58	$183.58	$183.58
In Stock	Available to Order Check Lead Time	Available to Order Check Lead Time	Available to Order Check Lead Time	Available to Order Check Lead Time	Available to Order Check Lead Time	Available to Order Check Lead Time	Available to Order Check Lead Time	Available to Order Check Lead Time	Available to Order Check Lead Time	Available to Order Check Lead Time	Available to Order Check Lead Time
Size Rectangular	Other	Other	Other	Other	Other	Other	Other	Other	Other	Other	Other
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