• Easy to use - With the PIECAL 311 you can check & calibrate all your RTD instruments  and  measure  RTD  Sensors.  Automatic  indication  of connections on the display for simple hookups.
• Take it into the shop, plant or field - Carry it without worry - it comes protected with a rubber boot and rugged, low profile switch. Easy to operate even in the dark areas of the plant with the backlit display.
• Calibrate directly in temperature (°C & °F) - Stop carrying around a decade box and RTD resistance tables. The PIECAL 311 works with the RTDs you use including Platinum 100 (alpha  =  3850,  3902,  3926)  & 1000  (alpha  =  3850,  3750)  Ohm, Copper  10  &  50  Ohm,  Nickel  100  and  120  Ohm.  Easily  set  any value quickly to within 0.1° with the adjustable digital potentiometer “DIAL” plus store any three temperatures for instant recall with the EZ-CHECK™ switch. Or use like a decade box from 0.00 to 410.00 and from 410.0 to 4001.0 Ohms.
• Fast calibration with automatic output stepping - Choose between 2, 3, 5, 11 and 21 steps to automatically increment the output in 100%, 50%, 25%, 10% or 5% of span. Select the step time to match your system from 5, 6, 7, 8, 10, 15, 20, 25, 30 and 60 seconds.
• Compatible with ALL process instruments - No competitor’s calibrator is compatible with as many process instruments! Connect directly to the RTD inputs of smart transmitters, PLCs, DCS and multichannel recorders  and verify their outputs ordisplays. Works with older instruments with fixed excitation currents and newer multichannel  instruments that switch the excitation current between input channels.
• Measure RTD sensors - Trouble shoot sensor connections and find broken wires with patented technology. Connect your two, three or four wire RTDs and the PIECAL 311 automatically detects the connections and measures the RTD in degrees C or F. Secondary display shows the resistance value corresponding to the RTD temperature.
• Evolutionary design - PIECAL Calibrators are designed and built by members of the same team that designed and built the calibrators manufactured by Fluke* under the Altek* label. The PIECAL 311 improves upon other brands by including a rubber boot, tilt stand, backlit display with larger digits, rugged switches and a battery compartment for fast battery changes.

Advantages of the PIECAL 311 over the Altek 311

Compatible with Newer Instrumentation Works with Rosemount & Honeywell Smart Transmitters, PLCs, DCSs, Multi-channel Recorders and other pulsed excitation devices. Higher accuracy at low excitation curents. Automatic Stepping PT 1000 Ω Curves - outputs up to 4000 Ω Automatic Stepping Larger Display with Backlight Easy viewing in dark locations More Resistant to Accidental Damage Rubber Boot and Stronger Switches Separate Battery Compartment No more removing housing with screwdriver to replace batteries Calibration seals remain intact Easily Change RTD Types Reconfigure without resetting calibrator Verify RTD Temperature & Output Secondary display of Ω to check against RTD tables