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Practical Instrument Electronics has introduced their PIECAL 850 10-50 mA Multifunction Process Calibrator. The PIECAL 850 exceeds the standard functions of a process calibrator by integrating a loop detective within the unit. Now, common problems can easily be diagnosed while the LoopScope provides a scan of all the parameters in the loop – milliamps, resistance and voltage. Diagnostic features are covered by US Patent #7,248,058.
General | |
Operating Temperature Range | -20 to 60 °C (-5 to 140 °F) |
Storage Temperature Range | -30 to 60 °C (-22 to 140 °F) |
Temperature effect | ≤ ± 0.005 %/°C of Full Scale |
Relative Humidity Range | 10 % ≤RH ≤90 % (0 to 35 °C), Non-condensing |
10 % ≤RH≤ 70 % (35 to 60 °C), Non-condensing | |
Common Mode Rejection | 50/60 Hz, 100 dB |
Normal Mode Rejection | 50/60 Hz, 50 dB |
Noise | ≤ ± ½ Least Significant Digit from 0.1 to 10 Hz |
Size | 5.63 x 3.00 x 1.60 in, 143 x 76 x 41mm (L x W x H) |
Weight | 12.1 ounces, 0.34 kg (including boot & batteries) |
Batteries | Four “AA” Lithium 1.5V (LR6) |
Battery Life | Read Functions ≥ 20 hours; Read Pressure ≥ 7 hours Source mA: ≥ 14 hours @ 12 mA into 250Ω ≥ 9.5 hours @ 30 mA into 250Ω Pwr/Meas: ≥ 12 hours @ 20 mA, ≥ 4.5 hours @ 50 mA Source V, Ω, T/C, pH, RTD & Hz ≥ 20 hours |
Low Battery | Low battery indication with nominal 1 hour of operation left |
Protection against misconnection | Over-voltage protection to 60 vrms (rated for 30 seconds). Red LED indicates OVERLOAD or out of range conditions |
Display | High contrast graphic liquid crystal display with 0.35” (9 mm) high digits on main & 0.2” (5 mm) on mA display. LED backlighting for use in low lit areas. |
Read mA | |
Ranges and Resolution | 0.000 to 24.000 mA or -25.00 to 125.00% of 4-20 mA 0.000 to 52.000 mA or -25.00 to 105.00% of 10-50 mA |
Accuracy | ≤ ± (0.02 % of Reading + 0.003 mA) |
Voltage burden | ≤ 2V at 24 mA. ≤ 2 V at 52 mA. |
Overload/Current limit protection | 25 mA nominal in 20 mA range 52.5 mA nominal in 50 mA range |
Source mA / Power & Measure Two Wire Transmitters & PWRM LEAK | |
Ranges and Resolution | 0.000 to 24.000 mA or -25.00 to 125.00% of 4-20 mA 0.000 to 52.000 mA or -25.00 to 105.00% of 10-50 mA |
Accuracy | ≤ ± (0.02 % of Reading + 0.003 mA) |
Loop compliance voltage | ≥ 24 DCV @ 20.00mA. ≥ 2 DCV @ 50.000mA |
Loop drive capability | 1200 Ω at 20 mA for 15 hours nominal; 800 Ω at 50 mA for 4.5 hours nominal Subtract 250Ω with Hart Resistor enabled (4-20 Only) |
mA 2-Wire Transmitter Simulation | |
Accuracy | Same as Source/Power & Measure |
Voltage burden | ≤ 2V at 24 mA. ≤ 2 V at 52 mA. |
Overload/Current limit protection | 25 mA nominal in 20 mA range 52.5 mA nominal in 50 mA range |
Loop voltage limits | 2 to 60 VDC (fuse-less protected from reverse polarity connections) |
| pH Source | |
| Accuracy in mV Accuracy in pH | ≤ ± (0.02 % of Reading in mV + 0.1 mV) ≤ ± 0.003 pH @ 25°C |
Voltage Read | |
Range and Resolution | ±99.999 mV, ±999.99mV, 0 to 10.250 V, 0.00 to 60.00 V DC |
Accuracy | ≤ ± (0.02 % of Reading + 0.01% Full Scale) |
Input resistance | ≥ 1 MΩ |
Source V dc | |
Ranges and Resolution | -20.000 to 99.999 mV, -500.00 to 999.99 mV, 0.000 to 10.250V |
Accuracy | ≤ ± (0.02 % of Reading + 0.01% Full Scale) |
Source Current | ≥ 20 mA |
Sink Current | > 16 mA |
Output Impedance | < 1 Ohm |
Short Circuit Duration | Infinite |
| Thermocouple Source | |
| Accuracy | ≤ ± (0.02 % of Reading + 0.01 mV) |
| Cold Junction Compensation | ± (0.1°C + 0.005%/°C) |
| Output Impedance | < 1 Ohm |
| Source Current | > 20 mA (drives 80 mV into 10 Ohms) |
Thermocouple Read | |
Accuracy & Cold Junction Compensation | Same as Thermocouple Source |
Input Impedance | > 1 Megohms |
Open TC Threshold; Pulse | 10K Ohms; <5 µamp pulse for 300 milliseconds (nominal) |
RTD, OHMS and Continuity Read | |
Resistance Ranges | 0.00 to 401.00, 0.0 to 4010.0 Ohms |
Accuracy | ±(0.025% of Reading + 0.075 Ohms) |
Excitation Current | 1.0 mA to 401 Ohms, 0.5 mA to 4010 Ohms (nominal) |
Continuity | 0.0 to 401.0 Ohms; Beeps from 0.0 to 100.0 Ohms |
RTD and OHMS Source | |
3Wire & 4 Wire Accuracy From 1 to 10.2 mA External Excitation Current
Below 1 mA of External Excitation Current 2Wire Accuracy |
±(0.025% of Reading + 0.075 Ohms)
±(0.025% of Reading+0.075 Ohms + 0.025 mV ) mA Excitation Current Add 0.1 Ohms to 3 Wire & 4 Wire Accuracy |
Resistance Ranges | 0.00 to 401.00, 0.0 to 4010.0 Ohms |
Allowable Excitation Current Range | 400 Ohm Range:10.2 mA max; steady or pulsed/intermittent 4000 Ohms Range: 1 mA max; steady or pulsed/intermittent |
Pulsed Excitation Current Compatibility | DC to 0.01 second pulse width |
Frequency Source | |
Ranges | 1 to 2000 CPM, 0.01 to 999.99 Hz, 0.1 to 9999.9 Hz, 0.001 to 20.000 kHz |
Accuracy | ±(0.02% of Reading + 0.01% of Full Scale) |
Output Waveform | Square Wave, Zero Crossing -1.0 to +5 V peak-to-peak ±10% |
Risetime (10 to 90% of amplitude) | < 10 microseconds |
Output Impedance | < 1 Ohm |
Source Current | > 1 mA rms at 20 kHz |
Short Circuit Duration | Infinite |
Optical Coupling | Green LED (HZ SYNC) flashes at output frequency |
Frequency Read | |
Ranges & Accuracy | Same as Frequency Source |
Accuracy | ±(0.02% of Reading + 0.01% of Full Scale) |
Trigger Level | 1 V rms, dc coupled |
Input Impedance | > 1 Meg Ohm + 60 pF |
| Thermocouple Ranges & Accuracies @ 23°C | |||||
T/C | Degrees C Range | °C | Degrees F Range | °F | T/C Material |
J | -200.0 to -50.0 | ±0.5° | -328.0 to -58.0 | ±1.0° | +Iron -Connstantan |
-50.0 to 300.0 | ±0.2° | -58.0 to 572.0 | ±0.4° | ||
300.0 to 900.0 | ±0.3° | 572.0 to 1652.0 | ±0.6° | ||
900.0 to 1200.0 | ±0.4° | 1652.0 to 2192.0 | ±0.8° | ||
| |||||
K | -230.0 to -50.0 | ±1.2° | -382.0 to -58.0 | ±2.2° | + Chromel® -Alumel® |
-50.0 to 550.0 | ±0.3° | -58.0 to 1022.0 | ±0.6° | ||
550.0 to 1000.0 | ±0.5° | 1022.0 to 1832.0 | ±0.8° | ||
1000.0 to 1371.1 | ±0.6° | 1832.0 to 2500.0 | ±1.1° | ||
| |||||
T | -260.0 to -230.0 | ±2.9° | -436.0 to -382.0 | ±5.2° | +Copper -Constantan |
-230.0 to -210.0 | ±1.0° | -382.0 to -346.0 | ±1.9° | ||
-210.0 to -50.0 | ±0.8° | -346.0 to -58.0 | ±1.4° | ||
-58.0 to 50.0 | ±0.3° | -58.0 to 122.0 | ±0.6° | ||
50.0 to 400.0 | ±0.2° | 122.0 to 752.0 | ±0.4° | ||
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E | -240.0 to -200.0 | ±0.9° | -400.0 to -328.0 | ±1.7° | +Chromel -Constantan |
-200.0 to 0.0 | ±0.5° | -328.0 to 32.0 | ±0.8° | ||
0.0 to 350.0 | ±0.2° | 32.0 to 662.0 | ±0.3° | ||
350.0 to 1000.0 | ±0.3° | 662.0 to 1832.0 | ±0.6° | ||
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R | -18.3 to 100.0 | ±2.1° | -1.0 to 212.0 | ±3.8° | +Pt/13Rh -Platinum |
100.0 to 500.0 | ±1.3° | 212.0 to 932.0 | ±2.4° | ||
500.0 to 1400.0 | ±1.0° | 932.0 to 2552.0 | ±1.8° | ||
1400.0 to 1767.8 | ±1.2° | 2552.0 to 3214.0 | ±2.0° | ||
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S | -18.3 to 100.0 | ±2.0° | -1.0 to 212.0 | ±3.7° | +Pt/10Rh -Platinum |
100.0 to 350.0 | ±1.4° | 212.0 to 662.0 | ±2.5° | ||
350.0 to 1600.0 | ±1.1° | 662.0 to 2912.0 | ±2.0° | ||
1600.0 to 1767.8 | ±1.3° | 2912.0 to 3214.0 | ±2.4° | ||
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B | 315.6 to 600.0 | ±3.2° | 600.0 to 1122.0 | ±5.7° | +Pt/30Rh -Pt/6Rh |
600.0 to 850.0 | ±1.7° | 1122.0 to 1562.0 | ±3.1° | ||
850.0 to 1100.0 | ±1.3° | 1562.0 to 2012.0 | ±2.4° | ||
1100.0 to 1820.0 | ±1.1° | 2012.0 to 3308.0 | ±2.0° | ||
T/C | Degrees C Range | °C | Degrees F Range | °F | T/C Material |
N | -230.0 to -150.0 | ±1.9° | -382.0 to -238.0 | ±3.4° | +Nicrosil -Nisil |
-150.0 to -50.0 | ±0.7° | -238.0 to -58.0 | ±1.2° | ||
-50.0 to 950.0 | ±0.4° | -58.0 to 1742.0 | ±0.8° | ||
950.0 to 1300.0 | ±0.5° | 1742.0 to 2372.0 | ±1.0° | ||
| |||||
G (W) | 100.0 to 350.0 | ±1.7° | 212.0 to 662.0 | ±3.0° | +Tungsten -W26/Re |
350.0 to 1700.0 | ±0.8° | 662.0 to 3092.0 | ±1.5° | ||
1700.0 to 2000.0 | ±1.0° | 3092.0 to 3632.0 | ±1.8° | ||
2000.0 to 2320.0 | ±1.1° | 3632.0 to 4208.0 | ±2.1° | ||
| |||||
C (W5) | -1.1 to 100.0 | ±0.8° | 30.1 to 212.0 | ±1.4° | +W5/Re -W26/Re |
100.0 to 1000.0 | ±0.7° | 212.0 to 1832.0 | ±1.3° | ||
1000.0 to 1750.0 | ±1.2° | 1832.0 to 3182.0 | ±2.1° | ||
1750.0 to 2320.0 | ±2.0° | 3182.0 to 4208.0 | ±3.5° | ||
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D | -1.1 to 150.0 | ±1.0° | 30.1 to 302.0 | ±1.8° | +W3/Re -W25/Re |
150.0 to 1100.0 | ±0.7° | 302.0 to 2012.0 | ±1.3° | ||
1100.0 to 1750.0 | ±1.0° | 2012.0 to 3182.0 | ±1.8° | ||
1750.0 to 2320.0 | ±2.0° | 3182.0 to 4208.0 | ±3.6° | ||
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P | 0.0 to 600.0 | ±0.3° | 32.0 to 1112.0 | ±0.6° | +Pd55/Pt31/ Au14 -Au65/Pd35 |
600.0 to 900.0 | ±0.4° | 1112.0 to 1652.0 | ±0.8° | ||
900.0 to 1200.0 | ±0.6° | 1652.0 to 2192.0 | ±1.1° | ||
1200.0 to 1395.0 | ±0.7° | 2192.0 to 2543.0 | ±1.2° | ||
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L J-DIN | -200.0 to -50.0 | ±0.4° | -328.0 to -58.0 | ±0.7° | +Iron -Connstantan |
-50.0 to 300.0 | ±0.2° | -58.0 to 572.0 | ±0.4° | ||
300.0 to 900.0 | ±0.3° | 572.0 to 1652.0 | ±0.5° | ||
| |||||
U T-DIN | -200.0 to -50.0 | ±0.6° | -328.0 to -58.0 | ±1.1° | +Copper -Constantan |
-50.0 to 50.0 | ±0.3° | -58.0 to 122.0 | ±0.5° | ||
50.0 to 550.0 | ±0.2° | 122.0 to 1022.0 | ±0.4° | ||
550.0 to 600.0 | ±0.3° | 1022.0 to 1112.0 | ±0.5° | ||
Table based on Thermocouple Accuracy ≤ ± (0.02 % of Reading in mV +0.01 mV)
Note: Doesn’t include cold junction error of ±0.05°C
| RTD Ranges & Accuracies | |||||
RTD Type | Alpha | Degrees C Range |
°C | Degrees F Range |
°F |
Pt 100 Ohm DIN/IEC/JIS 1989 Based on ITS-90 | 1.3850 (0.00385) | -200.0 to 0.0 0.0 to 340.0 340.0 to 640.0 640.0 to 850.0 | ±0.2° ±0.3° ±0.4° ±0.5° | -328.0 to 32.0 248.0 to 644.0 644.0 to 1184.0 1184.0 to 1562.0 | ±0.4° ±0.6° ±0.8° ±1.0° |
Pt 100 Ohm (Burns) | 1.3902 (0.003902) | -200.0 to 10.0 10.0 to 350.0 350.0 to 650.0 650.0 to 850.0 | ±0.2° ±0.3° ±0.4° ±0.5° | -328.0 to 50.0 50.0 to 662.0 662.0 to 1202.0 1202.0 to 1562.0 | ±0.4° ±0.6° ±0.8° ±0.9° |
Pt 100 Ohm (Old JIS 1981) | 1.3916 (0.003916) | -200.0 to 20.0 20.0 to 360.0 360.0 to 650.0 650.0 to 850.0 | ±0.2° ±0.3° ±0.4° ±0.5° | -328.0 to 68.0 68.0 to 680.0 680.0 to 1202.0 1202.0 to 1562.0 | ±0.4° ±0.6° ±0.8° ±0.9° |
Pt 100 Ohm (US Lab) | 1.3926 (0.003926) | -200.0 to 20.0 20.0 to 360.0 360.0 to 660.0 660.0 to 850.0 | ±0.2° ±0.3° ±0.4° ±0.5° | -328.0 to 68.0 68.0 to 680.0 680.0 to 1220.0 1220.0 to 1562.0 | ±0.4° ±0.6° ±0.8° ±0.9° |
RTD Type | Alpha | Degrees C Range | °C | Degrees F Range | °F |
Pt 1000 Ohm DIN/IEC/JIS 1989 | 1.3850 (0.00385) | -200.0 to 0.0 0.0 to 340.0 340.0 to 640.0 640.0 to 850.0 | ±0.2° ±0.3° ±0.4° ±0.5° | -328.0 to 32.0 248.0 to 644.0 644.0 to 1184.0 1184.0 to 1562.0 | ±0.4° ±0.6° ±0.8° ±1.0° |
Copper 10 Ohm (Minco) | 1.4274 (0.004274) | -200.0 to 260.0 | ±2.0° | -328.0 to 500.0 | ±3.6° |
Copper 50 Ohm | 1.4280 (0.00428) | -50.0 to 150.0 | ±0.4° | -58.0 to 302.0 | ±0.8° |
Ni 120 Ohm (Pure) | 1.6720 (0.00672) | -80.0 to 260.0 | ±0.1° | -112.0 to 500.0 | ±0.3° |
Ni 110 (Bristol 7 NA) | 1.5801 (0.005801) | -100.0 to 260.0 | ±0.2° | -148.0 to 500.0 | ±0.4° |
Table based on 3 & 4 Wire RTD Accuracy: ≤ ± (0.025 % of Reading +0.075 Ohms)
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