Texmate PM Series Manual

3 1/2 DIGIT 0.48" LCD
General Features
The PM-35XAC is a precision AC powered panel meter that
mea sures true dif fer en tial and single-ended DC voltages over
five user pro gram ma ble ranges from ±199.9mV to ±1200V full
scale. The 1500V isolation provided by the internally mounted
miniature 110 or 220VAC mains transformer eliminates most
of the trou ble some ground loop problems associated with DC
powered DPM's. Alternatively, where appropriate, a DC power
supply of 9 to 15VDC can be used. Since the meter draws only
a small constant current, operation from higher DC voltages is
also possible merely by use of a voltage dropping resistor in
series with the meter.
The true differential capability of the Model PM-35XAC permits
accurate mea sure ments of very small input signals in presence
of much larger common mode signals. It is ideal for measuring
various balanced trans duc ers and bridge inputs.
The high contrast long-life liquid crystal display also offers 8
user pro gram ma ble de scrip tors for direct indication of the type
and range of signals being mea sured.
Typical Application Connections
SINGLE-ENDED METER - 200mV RANGE, >2V RANGE
For 200mV Range: 1) Omit R1 and R2; 2) Change R6 from 470kΩ to
47kΩ; 3) Change R8 from 619Ω to 121Ω; 4) Change R9 from 4.32kΩ
to 12.1kΩ; 5) Change C4 from 0.047µF to 0.33µF; 6)Change C7 from
0.1µF to 2.2µF. For>2V RANGE; 1) Install R1 and R2 as specified
under section titled Use ful Tables.
View more application connections and connection
instructions on page 3.
PM-Series, high performance versatility for a wide range of applications
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-35X ...................3.5 digit LCD, Low Power Consumption 2VDC, 5VDC Power
PM-35XAC110 ........3.5 digit LCD, 2VDC, 120VAC Power
PM-35XACAR1 .......3.5 digit LCD, Autoranging, 120VAC Power
PM-35XAC Manual (X3)
PM-Series
110/220VAC Powered LCD Differential Input and Autoranging Meters.
Texmate, Inc. Tel. (760) 598-9899 • www.texmate.com
PM-35XAC110
115 VAC Powered Panel Meter
PM-35XACAR1
Autoranging Option for XAC110
Please see A1 picture on Pg.3
Specifications
Input Configuration: ......True differential and single-ended
Full Scale Ranges: ........±199.9mVDC
±1.999VDC (standard)
±19.99VDC
±199.9VDC
±1200VDC
Input Impedance: ...........Exceeds 1000MΩ on 200mV and
2V ranges; 10MΩ on all other
ranges
Input Protection: ............±500VDC or 350VAC maximum on
200mV and 2V ranges; ±1200VDC
or 850VAC on all other ranges
Accuracy: .......................±(0.05% of reading + 1 digit)
Temperature Coefficient: ..5PPM/°C in ratiometric operation; 50
PPM/°C Typ. using internal reference
on 200mV and 2V ranges
Warm Up Time: ..............10 seconds to specified accuracy
Conversion Rate: ...........3 readings per second nominal; user
programmable from 1 to 10 readings
per second
Display:...........................0.48" LCD
Decimal Selection: ........User programmable to 3 positions
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: ...110VAC or 220VAC, 5% at 50Hz,
117V or 230VAC, 5% at 60Hz and
400Hz. Regulated 9VDC to 15VDC
at 6mA to 15mA
Operating Temperature: ....0° to +60°C
Storage Temperature: ...-20° to +70°C
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-45L ...................4.5 digit Red LED, Precision Meter w/Differential Input
PM-45LU .................4.5 digit Red LED, Low Cost 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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