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Simpson M135 DC Voltage Digital Panel Meter
Click image to enlarge
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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 for
Easy Installation
- Display Hold Standard on All Units
- Four Voltage Ranges: 200mV, 2mV, 20mV, 200mV
- Three Power Supply Alternatives: 5VDC, ±5VDC or 9VDC
(With Low Battery Indication)
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Description
| Simpson’s Mini DC Voltage 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. |
Models, Options, & Accessories
| Model |
Description |
List Price |
Sale Price |
| M135 |
3-½ Digit Mini Process Indicator Panel |
| Call |  |
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Ordering Options
Specifications
| DISPLAY |
| Type |
7-segment LCD |
| Height |
0.5” (12.7mm) |
| Decimal point |
3-position programmable |
| Overrange indication |
Most significant = “1” |
| Backlighting |
Optional negative image, red backlighting at 5, 10, 12, 24, or 48VDC |
| Polarity |
Auto with “-” indication, “+” indication implied |
| POWER REQUIREMENTS |
| DC Power |
±5V, +5V, and +9V(Low battery indication provided with 9V units) |
| Power supply current |
2mA max |
| Backlight supply current |
50mA typical For 24 and 48VDC, 10mA typical |
| ACCURACY @ 25°C |
±(0.1% of reading + 1 count |
| ENVIRONMENTAL |
| Operating Temperature |
0 to 55°C |
| Storage Temperature |
-10 to 60°C |
| Relative Humidity |
0 to 85% non-condensing |
| Warmup time |
Less than 20 minutes |
| Temperature Coefficient |
(All inputs)(0.2% of input ± 0.2 digit)/°C |
| NOISE REJECTION |
| NMRR |
60dB, 50/60Hz |
| CMRR |
(with 1KV unbalanced @ 60 Hz): 90dB min |
| ANALOG TO DIGITAL CONVERSION |
| Technique |
Integrating |
| Rate |
3 samples/second-typical |
| MECHANICAL |
| Bezel |
0.945” x 2.835”(24mm x 72mm) |
| Depth |
0.473” (12mm) |
| Panel cutout |
0.874” x 2.677”(22.2mm x 68mm) |
| Weight |
10oz (28.3g) |
| Case Material |
94-VO, UL-rated ABS |
| INPUTS |
DC Voltage
Range |
Resolution |
Input Impedance |
Maximum Input(unfused) |
200mV |
100µV |
>100M |
50V |
2V |
1mV |
10M |
250V |
20V |
10mV |
10M |
250V |
200V |
100mV |
10M |
250V |
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