4 1/2 DIGIT with.48 LCD
The PM-45X and PM-45XU are truly unique and extremely versatile instruments. Believed to be the worlds smallest and most energy efficient 4 1/2 Digit LCD Panel Meters, they nevertheless offer more high performance features than most larger and more expensive DPMs.
Both meters incorporate a crystal controlled 100KHz clock that provides an exceptionally high normal mode rejection of 120dB at multiples of 50/60Hz. Bipolar differential and single-ended DC voltages from 199.99mV to 200.0V full scale can be measured and scaled in almost any known engineering unit. Provision has been made for signal offsetting and the capability of attenuating both high and low signal inputs.
Resolution is 10V over 19999 counts, and errors due to zero drift are virtually eliminated by autozeroing. Other modes of operation, selectable by the user, include an ohmmeter mode, current meter mode and ratiometric mode.
SINGLE-ENDED METER - <2V RANGE 1) Standard 2V Full Scale Range single-ended voltmeter is shown. R1A and R1B are shorted by jumpers and R2A and R2B are not installed.
2) Connect Pin 3 to the nearest end of the signal source ground to avoid possible errors caused by ground loop currents.
View more application connections and connection instructions on page 3.
Input Configuration:........ True differential and single-ended Full Scale Ranges:.......... 199.99mVDC
1.9999VDC (standard)
19.999VDC
199.99VDC
Input Impedance:........... Exceeds 1000M on 200mV and
2V ranges; 10M on all other ranges
Input Protection:............. 170VDC or 120VAC on 200mV
and 2V ranges; 1200VDC
or 850VAC on all other ranges Accuracy:....................... 45X: (0.01% of reading + 1 count) (0.015% of reading + 2 counts) for 200mV range.
45XU: (0.015% of reading + 2 counts) (0.02% of reading + 3 counst) for 200mV range.
Temperature Coefficient:.... 45X: 5PPM/C in ratiometric,
200PPM/ C using internal adjustable T.C. reference.
45XU: 5PPM/C ratiometric, 50PPM/ C using internal reference.
Warm Up Time:.............. 10 seconds to specified accuracy Conversion Rate:............ 2.5 readings per second Display:........................... 0.48" LCD Overrange Indication:..... When input exceeds full scale on
any range being used, most significant 1 digit & polarity symbol are displayed with all other digits blank
Power Requirements:..... Low Ripple +4.5 to +5.5VDC at 3-5mA Operating Temperature:..... 0 to +60C Storage Temperature:..... -20 to +70C Relative Humidity........... 95% (non-condensing) Case Dimensions:.......... Bezel 2.76 x 1.17 (69.75 x 29.7mm)
Depth behind Bezel 3.32(84mm) plus 0.68 (17.27mm) for connector.
Weight:............................. 88 gms (3.1 oz)
PM-35A.................... 3.5 digit Red LED, Precision Preference, 2VDC, 5VDC Power PM-35U.................... 3.5 digit Red LED, Low Cost, 2VDC, 5VDC Power
PM-45L................ 4.5 digit Red LED, Precision Meter w/Differential Input PM-45X............... 4.5 digit LCD, Precision Meter w/Differential Input PM-45XU.................3.5 digit LCD, Low Cost Meter w/Differential Input
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Connector Pinouts
The Texmate Model PM-45X/PM-45XU is interconnected by means of a standard PC board edge connector having two rows of 10 pins, spaced on 0.156" centers. The optional parallel BCD Output is interconnected by a standard PC edge connector having two rows of 13 pins spaced on 0.1" centers.
Component Layout
R10
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SPAN Potentiometer (Pot)
The SPAN pot is on the right side of the display. Typical adjustment is 20% of the input signal range.
ZERO Potentiometer (Pot) optional
The ZERO pot is on the right side of the SPAN Pot. Typically it enables the displayed reading to be offset 500 counts.
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PANEL CUTOUT
FRONT VIEW
SIDE VIEW
TOP VIEW
option metal
screw mounting clip
When extra panel mounting tightness is required, optional Screw Mounting Clips can be purchased seperately and attach to the sliding mounting side clips
PCB Edge Connector
A standard 20-pin edge con nec tor (two rows of 10 pins on 0.156" centers) is used to connect the PM-Series of meters.
Order part no. CN-L10.
Ordering Information
Standard Options for this Model Number
Part Number..Description 4bASIC MODeL NUMbeR
PM-45X..... 4.5 digit LCD, Precision Meter w/Differential Input PM-45XU.... 4.5 digit LCD, Low Cost Meter w/Differential Input
Special Options and Accessories
Part Number..Description
4SPeCIAL OPTIONS (Specify Inputs & Req. Reading)
ZS..........Custom display scaling within standard ranges ZR-200V....200 VDC Range Change.
ZR-20V......20 VDC Range Change.
ZRS-200MV..200 mVDC range change.
ZRS-PMRP...Non-standard range and scale.
4ACCeSSORIeS
CN-L10...... Dual Row 10 Pin Connector, Solder Type
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Texmate is an American manufacturer of high durability industrial grade panel meters, bar graphs, and transducers. Texmate's meters are frequently equipped with relays and various signal outputs for industrial automation applications and are known for their extremely long service life.