- The ONLY 2-in-1 Full Function RTD/Milliamp Calibrator on the Market
- Protects Instruments & Technicians From Potentially Dangerous Catastrophic Failures Due to Hidden Loop Probelms
- Compatible w/All Process Instruments
- Troubleshoot RTD Sensors and Loop Problems
- Easiest to Use & Half the Size of the Closest Competitor
- Calibrate Directly in C/F, No Need to Carry Around a Decade Box/RTD Tables
- Fast Calibration w/Automatic Stepping
- Measure RTD Sensors
- With the Built-In Milliamp Calibrator You Can Check, Calibrate & Measure All Current Signal Instruments in a 4-20 mA Loop
- Comes With NIST Cert, Rubber Boot, Carrying Case, Batteries, 2 Red & 2 Black Leads w/Banana to Spade Lugs
- Ships In 1-2 Days For Fast and FREE Delivery
The 311-PLUS is the only calibrator that combines all the functions of a diagnostic milliamp calibrator with the accuracy of a laboratory RTD calibrator. You can quickly diagnose ground fault and current leakage often caused by water in conduits and junction boxes with patented loop diagnostic technology (patent # 7,248,058).
No competitor's calibrator is compatible with as many process instruments. Connect directly to RTD inputs of smart transmitters, PLCs, DCS and multichannel recorders and verify their outputs or displays. You can troubleshoot sensor connections and find broken wires with the patented technology. Connect your 2, 3, 4 wire RTDs and the PIE 311-PLUS automatically detects the connections. Secondary display shows the resistance value corresponding to the RTD temperature.
When you have a RTD input problem that is difficult to diagnose, the 311-PLUS makes it easy. When you connect the meter directly to the RTD sensor it will indicate on the display which wires are connected. This quickly points out if there is a problem with the wiring or with the sensor itself. If no problem is found with the sensor connect the 311-PLUS to the sensor input connections on the instrument to see if it is working properly. Secondary displays show you the resistance value of the RTD plus the magnitude and direction of the excitation current used by the instrument to measure the RTD sensor. If no excitation current is detected then there is a problem with the instrument.
The 311-PLUS allows for fast calibration with automatic output stepping. You can choose between 2, 3, 5, 11 and 21 steps to automatically increment the outputs in 100%, 50%, 25%, 10% or 5% of span. Select the step time to match your system from 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 60 seconds.
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| PART NUMBER | DESCRIPTION |
| CL-PI-311-PLUS | PIE 311-PLUS Diagnostic RTD/Milliamp Calibrator w/Patented RTD Wire Detection |
| Datasheets and Operating Instructions |
SPECIFICATIONS (unless otherwise noted, all specs are rated a nominal 25C, 70% RH for 1 year from calibration)
READ mA
Ranges and resolution: 0.000 to 24.000 mA or -25.00 to 125.00% of 4-20 mA
Accuracy: < +/-(0.02% of reading + 0.003 mA)
Voltage burden: < 2V at 24 mA
Overload/current limit protection: 25 mA nominal
SOURCE mA/POWER & MEASURE 2 WIRE TRANSMITTERS & PW/RM LEAK
Ranges & resolution: 0.000 to 24.000 mA or -25.00 to 125.00% of 4-20 mA
Accuracy: < +/-(0.02% of reading + 0.003 mA)
Loop compliance voltage: > 24 DCV @ 20.00 mA
Loop drive capability: 1200 Ohms at 20 mA for 15 hrs nominal: 950 Ohms w/Hart Resistor or leak detection running
mA 2-WIRE TRANSMITTER SIMULATION
Accuracy: Same as source/power & measure
Voltage burden: < 2V at 20 mA
Overload/current limit protection: 24 mA nominal
Loop voltage limits: 2 to 60 VDC (fuse-less protected from reverse polarity connections)
READ OHMS & RTD
3 & 4-wire accuracy: +/-(0.015% of reading + 0.05 Ohms)
2-wire accuracy: +/-(0.015% of reading + 0.05 Ohms)
Resistance ranges: 0.00 to 401.00, 0.0 to 4010.0 Ohms
Excitation current: 0.9 mA to 401 Ohms, 0.4 mA to 4010 Ohms (nominal)
SOURCE OHMS & RTD
3 & 4-wire accuracy from 1 to 10.2 mA external excitation current: +/-(0.015% of reading + 0.05 Ohms)
Below 1 mA of external excitation current: +/-(0.015% of Rdg + 0.025 mv/mA excitation current + 0.05 Ohms
2-wire accuracy: Add 0.1 Ohms to 3 &4-wire accuracy
Resistance ranges: 0.00 to 401.00, 0.0 to 4010 Ohms
Allowable excitation current range: 0 to 400 Ohms: 10.2 mA max; steady or pulsed/intermittent, 401 to 4000 Ohms: 1 mA max: steady or pulsed/intermittent
Pulsed excitation current compatibility: DC to o.o1 second pulse width
OPERATING TEMPERATURE RANGE: -25 to 60C (-10 to 140F)
RH RANGE: 10% <RH <90% (0 to 35C) non-condensing, 10% <RH <70% (35 to 60C) non-condensing
TEMPERATURE DRIFT: +/- 0.01% of span outside 23C +/-10C (73C +/- 18F)
DIMENSIONS: 5.63 x 3.00 x 1.60 in ( 143 x 76 x 41 mm)
WEIGHT: 12.1 ox, 0.34 kg (including boot & 4-AA batteries)
BATTERY LIFE: 25 hrs RTD, 8 hrs Milliamp
ISOLATION VOLTAGE: 60V rms between all miliamp functions and source/read RTD/Ohms
NOMINAL MODE REJECTION: 50/60 Hz, 50 dB
COMMON MODE REJECTION: 50/60 Hz, 120 dB
LOW BATTERY WARNING: Low battery indication with 1 hr of operation left
PROTECTION AGAINST MISCONNECTION: Over-voltage protection to 60V dc (rated for 30 seconds)
DISPLAY: High contrast LCD display. LED backlight for use in low lit areas