M135-0-0-14-0 Simpson, M135-0-0-14-0 Datasheet - Page 2

• Manufacturer Part Number: M135-0-0-14-0
• Description: Digital Panel Meters DCV 200V 3.5
• Manufacturer: Simpson
• Type: DC Voltmeterr

Specifications of M135-0-0-14-0

• Equipment Type: DC Voltmeter
• Display Type: 7 - Segment LCD
• Accuracy: ±0.1% %
• Common Mode Rejection Ratio: 90 dB (Min.)
• Connection Type: Wire Leads
• Cut Out, Panel: 0.874×2.677 "
• Digit Height: 0.5
• Dimensions: 2.84"L×0.945"H×0.43"D
• Display Digit Height: 0.5 "
• Display Resolution: 100 mV
• Function: Voltage
• Input Impedance: 10 Megohms
• Material, Casing: ABS
• Number Of Digits: 3-1/2
• Primary Type: Electronic
• Range, Measurement: 200 VDC
• Temperature, Operating: 0 to +55 °C
• Voltage, Input: 200 V
• Voltage, Supply: 5 VDC
• Weight: 28.3 g
• No. Of Digits / Alpha: 3-1/2
• Meter Function: DC Voltmeter
• Meter Range: 0V To 200V
• Operating Temperature Range: 0°C To +55°C
• Leaded Process Compatible: No
• Meter Output: Voltage
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

These instruments are designed for maximum safety
to the operator when mounted in a panel according
to instructions. They are not to be used unmounted
or for exploratory measurements
in unknown circuits.
A reversed polarity power supply will permanently
damage this instrument.
IN HIGH and IN LOW must remain within the limits of
the power supply breakdown voltage.
No internal isolation is provided. Each meter requires
an isolated power supply. Supply voltage must also
be isolated from the circuit being measured.
A positive reading will be displayed when IN Hi is
more positive than IN Low.
Internal Reference: REFOUT must always be con-
nected to REFIN unless an external reference is
being used.
External Reference: Connect between REFIN and
ANALOG GROUND; REFOUT should then be uncon-
nected (open). For best results, external reference
voltage should be in the range of 50mV to 150mV.
System stability is then only as good as the external
reference.
Calibration
Model M135 has a limited range adjustment for cali-
bration. Apply the appropriate current input for a
near full scale reading, typically 1900 counts on the
display. The adjustment is accessed through the
exposed hole in the upper left corner of the rear
panel. For this adjustment to function, REFOUT must
be connected to REFIN.
Backlight Power Supply
A 2-pin connector is included with the unit if back-
lighting is specified. The right pin is the Positive, and
the left pin is for the Negative power supply. See the
Rear Connections diagram for location.
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)
Connections
Specifications
Safety Symbols
The WARNING sign denotes a hazard. It
calls attention to a procedure, practice, or
the like, which, if not correctly performed
or adhered to, could result in personal
injury.
The CAUTION sign denotes a hazard. It
calls attention to an operating procedure,
practice, or the like, which, if not correct-
ly adhered to could result in damage to or
destruction of part or all of the instrument.
Input Signal
Input Signal
Input Signal
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)
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”
Basic Unit
In Hi
In Low REFOUT Supply
In Low REFOUT
M135
In Hi
In Low REFOUT Supply
In Hi
In Hi
In Low REFOUT Supply
(0.2% of input
Ordering Information
(24mm x 72mm)
Mini Voltage Indicators can be configured by making an entry for each box
Ground
3-1/2 Digit Indicator
Analog
Ground Ground
Ground
Ground
Analog
Analog
Analog
Ground
Positive
Supply Negative
Positive
Positive
Ground
Supply
Positive
Ground
Supply Negative REFIN
Supply Negative
Supply
0.2 digit) / C
0
1
9 VDC Power Supply
+5 VDC Power Supply
±5 VDC Power Supply
Optional Connections
Non Backlight
Negative Image Red
Negative
Display
Supply
Supply
Supply
Supply
Hold
Hold
Hold
Hold
REFIN
REFIN
REFIN
DP1
DP1
DP1
DP1
DPM Power Supply
DP3
DP3
DP2
DP2
DP2
DP3
DP3
DP2
0
1
2
Depth: 0.473” (12mm)
Panel cutout: 0.874” x 2.677”
Weight: 10oz (28.3g)
Case Material: 94-VO, UL rated ABS
INPUTS: DC Voltage
+5VDC
±5VDC
+9VDC
200mV
Range
200V
20V
VDC
VDC
2V
VDC
VDC
+5
5
-5
9
+
-
+
-
Decimal Point: DP 1 is the first decimal
point to the left of the least significant digit.
Connect DP# to Positive Supply to activate.
Unneeded features should remain uncon-
nected.
Display Hold: The display can be held
indefinitely by connecting Hold to Positive
Supply. The display will function normally
when this connection is removed.
Resolution Impedance Input (unfused)
100mV
100 V
10mV
(22.2mm x 68mm)
1mV
11
12
13
14
Range
Rear Connections
200 mV
DP3
Decimal Point
200 V
20 V
>100M
2 V
Mini M135
10M
10M
10M
Input
DP2
0
1
2
3
4
5
DP1
Maximum
Backlight Power
250V
250V
250V
50V
10VDC
12VDC
24VDC
48VDC
5VDC
None