Cable-Extension Position Transducer
PT1MA
0/4...20 mA Output
Ranges: 0-2 to 0-50 inches
Compact Size • OEM Applications
Specification Summary:
GENERAL
Full Stroke Range Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-2 to 0-50 inches
Output Signal Options . . . . . . . . . . . . . . . . . . . . . . . . . 4...20 mA (2-wire) and 0...20 mA (3-wire)
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . ± 0.28% to ±0.15% full stroke see ordering information
Repeatability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 0.05% full stroke
Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . essentially infinite
Measuring Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .019-in. dia. nylon-coated stainless steel
Enclosure Material . . . . . . . . . . glass-filled polycarbonate and black anodized aluminum
Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . plastic-hybrid precision potentiometer
Potentiometer Cycle Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see ordering information
Maximum Retraction Acceleration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see ordering information
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 lb. max.
ELECTRICAL
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see ordering information
Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA max.
Maximum Loop Resistance (Load) . . . . . . . . . . . . . . . . . . . . . . . (loop supply voltage - 8)/0.020
Circuit Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 mA max.
Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100M ohms@100 VDC, min.
Output Signal Adjustment
Zero Adjustment . . . . . . . . . . . . . . . . . . . . . from factory set zero to 50% of full stroke range
Span Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . to 50% of factory set span
Thermal Effects
Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.01% f.s./°F, max.
Span . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.01% f.s./°F, max.
ENVIRONMENTAL
Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NEMA 4, IP 65
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to 200°F (-17° to 90°C)
Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . up to 10 G’s to 2000 Hz maximum
EMC COMPLIANCE PER DIRECTIVE 89/336/EEC
Emission/Immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EN50081-2/EN50082-2
Ø.20 [5,1]
4 places
Range
2, 10
5, 25, 50
15, 30
20, 40
A
1.04 [26,4]
0.58 [14,7]
0.82 [20,8]
0.74 [18,8]
The PT1MA adds 4...20 mA position feedback signal to Celesco’s compact line of cable-extension
transducers. The PT1MA is available with full stroke
ranges from as little as 2 inches on up to 50 inches
with adjustable zero and span settings to precisely
match the full scale output to your exact measurement range.
The PT1MA offers several options including forward
and reverse 0...20 and 4...20 mA output signals, alternate measuring cable exits and a couple different
electrical connection options.
A
2.75 [69,9]
inches [mm]
0.38 [9,5]
1.50
[38,1]
0.91 [23]
Ø.19 [4,9] thru
20 mA
0.170 [4,32]
Ø.38 [9,7]
1.50 ± .13
[38,2 ± 3,2]
Ø.37 [9,4]
4 mA
1.98 [50,2]
OUTPUT SIGNAL (milliamperes)
Output Signal
FULL STROKE RANGE
1.19 [30,2]
2.33 [59,1]
3.25 [82,6]
0.19 [4,7]
0.09 [2,2]
3.85 [97,8] max.
dimensions are in inches [mm], tolerances are 0.03 inches [0,8 mm]
Celesco Transducer Products, Inc.
20630 Plummer Street  •  Chatsworth, CA 91311
tel: 800.423.5483 • +1.818.701.2750 • fax: +1.818.701.2799
celesco.com • info@celesco.com
PT1MA  |  67