PM-Series
3 1/2 DIGIT with 0.4 LED
General Features
The PM-35U Digital Panel Meter is an economical, high performance instrument incorporating a number of fea tures usually found only on more expensive meters. Utilizing the dual slope method of integration, the unit measures differential and single-ended DC voltages over five user selectable ranges from 199.9mV to 1200V full scale.
Maximum res o lu tion is 100V over 1999 counts. Provision is made for user con nec tions to provide various operating modes, including a ra ti om et ric voltmeter, current meter, ratiometric ohmmeter, and a tem pera ture difference meter.
Specifications
Input Configuration:......True differential and single-ended
Full Scale Ranges:........199.9mVDC
1.999VDC (standard)
19.99VDC
199.9VDC
1200VDC
Input Impedance:...........Exceeds 1000M on 200mV and
2V ranges; 10M on all other ranges
The true differential input capability of the Model PM-35U is particularly useful for making accurate measurements of very small signals in the presence of much larger common mode signals.
Input Protection:............250VDC or 175VAC maximum on
200mV and 2V ranges; 1200VDC or 850VAC on all other ranges
Because of its high noise immunity, it is also ideal for measuring various balanced transducers and bridge inputs. When measuring bridge circuits, long term drift of the excitation voltage can be compensated for by using the ratiometric voltmeter mode of operation.
Accuracy:.......................(0.1% of reading + 1 digit)
Temperature Coefficient:..5PPM/C in ratiometric operation; 80
to 100PPM/C using internal reference on 200mV and 2V ranges
Warm Up Time:..............2 minutes to specified accuracy
SINGLE-ENDED METER200mV Range, >2V Range 200mV Range:
1) Change R6 from 470k to 47k, 5%; 2) Change R9 from 18.2k to 26.7k, 1%; 3) Remove R8 (9.53k) and short with a jumper; 4) It is recom mend ed that C4, C5 and C7 be changed to 0.22mF; 5) Adjust R10 until CV1=100mV.
>2V Range: Install R1 and R2 as specified under section titled Useful Tables.
Conversion Rate:...........3 readings per second nominal
Display:...........................0.4" LED
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:...+4.5 to +5.5VDC at 200mA max.
Operating Temperature:....0 to +60C
Storage Temperature:...-20 to +70C
Relative Humidity..........95% (non-condensing)
View more application connections and connection instructions on page 3.
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-35X.................... Replaced by SM-35X 3.5 digit LCD, Low Power Consumption 2VDC, 5VDC Power
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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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.