Simpson Electric Mini-Max M235, Mini-Max M245 Data Sheet

LCD

1

Rev. 06-15-16

Mini-Max M235 & M245

Digital Panel Meters

LED

• 3/64 DIN Indicator

• Unique mounting bracket allows stacking of multiple units

• Screw terminal connectors for easy installation

• LCD: 3-1/2 or 4-1/2 digit, 0.5” high LCD display with optional
negative image, bright red backlighting

• LED: 3-1/2 digit, 0.56” high display

• LED: 4-1/2 digit, 0.40” high display

• Limited range display scaling

Mini-Max M235 & M245

2

Rev.

06-15-16

Digital Panel Meters

Specifications

LCD LED

M235 M245 M235 M245

DISPLAY

Type 7 segment

thgieH 0.5” (12.7 mm) 0.56” (14.2 mm) 0.4” (10.2 mm)

Decimal Point (Selectable) 3 position 4 position 3 position 4 position

Overrange Indication Most significant digit = “1” Blinking Display

Backlighting Optional negative image, Red Backlight N/A

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

POWER REQUIREMENTS

AC Volt 85 - 250 VAC @ 40 - 440Hz

DC Volt 9 - 32 DCV Not Available

POWER CONSUMPTION

85 - 250 VAC LCD 4.0 VA (2.4W ) Max. 3.6 VA (2.16W ) Max.

9 - 32 DCV LCD 3W Max Not Available

ISOLATION 250 VRMS Max

ACCURACY @ 25º C

200 Hz ± 0.2% of input ± 0.2 Hz

2 KHz ± 0.2% of input ± 2 Hz

DC V & A ± (0.1% of Reading ± 1 count) ± (0.04% of Reading ± 1 count) ± (0.1% of Reading ± 1 count) ± (0.04% of Reading ± 1 count)

DC 2A ± (0.25% of Reading ± 1 count)

DC 5A ± (0.5% of Reading ± 1 count)

AC TRMS V & A ± (0.5% of Reading + 5 count)

( 50 Hz - 2 KHz )

DC Process ± (0.02% of Reading ± 1 count)

EXCITATION CURRENT 25mA (Maximum)

ENVIRONMENTAL 0 to 55ºC

Storage Temperature -10 to 60ºC

Relative Humidity 0 to 85% non condensing @ 40ºC

Temperature Coefficient 0.2% of input ± 0.5 digits / ºC

WARM-UP TIME Less than 20 minutes

NOISE REJECTION CMRR 86 dB Typical

A TO D CONVERSION

Technique

Rate 3 samples/second typical

FREQUENCY METER

Technique Frequency-to-voltage Not Available

INPUT LEVEL

(Frequency Meter) 500mV to 270 VRMS @ 1.0 Meg ohm

or 5V to 24V SquareWave
(DC offset = 2Vmax)

MECHANICAL

Bezel 0.95” x 2.84” (24 mm x 72 mm)

Depth 2.36” (60 mm)

Panel Cutout 0.88” x 2.68” (22.2 mm x 68 mm)

Weight 3.5 oz. (99.2 g) 2.6 oz. (74 g)

Case Material 94-0, UL-rated, glass-filled thermoplastic

± (0.5% of Reading + 50 count)

( 50 Hz - 2 KHz )

Integrating Dual Slope

± (0.5% of Reading + 2 count)

Not Available

( 50 Hz - 5 KHz )

Not Available

± (0.5% of Reading + 10 count)

( 50 Hz - 5 KHz )