Altek 311 RTD Calibrator

The model 311A has been designed to calibrate every type of RTD monitoring and measuring devices. The enhanced circuitry of the 311A makes it compatible with a wider variety of instruments than other RTD calibrators. Some newer process control equipment use a pulsed excitation current to measure RTD sensors. This includes some smart transmitters, multi-channel recorders and inputs to Programmable Logic Controllers (PLC's), computers and digital control systems. The model 311A is designed to work with these devices and accepts intermittent current pulses as short as 10 milli-seconds. It calibrates devices with excitation currents of as little as 0.090 mA and as high as 10.20 mA.
	Features and Benefits Simulate RTD's into Smart Transmitters Works with a wide variety of models including Rosemount 3114 and Honeywell STT series. Universal Compatibility with Process Instruments Operates with devices that use pulsed excitation currents including PLC's, DCS and Multi-channel recorders. Calibrate in Temperature for your RTD Type Platinum 100Ω, Copper 10Ω, Nickel 110 and 120Ω. Simulate from 0.00 to 500.00 Ohms. Calibrate with Laboratory Accuracy ±(0.01% of Reading + 0.075 Ohms) Accurate to ±0.2°C (0.4°F) for Pt100 Ohm RTD's. Resolution Resolution to 0.1C or F and to 0.01Ω. Digital Accuracy with Analog Simplicity Speed sensitive digital pot for fast output adjustment. User Settable "Quick-Cheks©" Set any Span and Zero for instant recall. Standard "AA" Alkaline Batteries 50 hours of constant operation. Altek 311 RTD Calibrator Specifications (PDF) (documents are in PDF format and will open in a new window)
Ranges and Accuracies
(Temperature Accuracies Converted From Resistance - Based On Ohms Accuracy of ±(0.01% of Reading + 0.075Ω)

RTD Type	ALPHA	Range	Accuracy	Range	Accuracy
Pt 100Ω (DIN/EC/JIS 1989) Based on ITS-90	1.3850	-200.0 to 200.0°C 200.0 to 600.0°C 600.0 to 850.0°C	±0.2°C ±0.3°C ±0.4°C	-328.0 to 392.0°F 392.0 to 1112.0°F 1112.0 to 1562.0°F	±0.4°F ±0.6°F ±0.7°F
Pt 100 (Burns)	1.3902	-195.6 to 200.0°C 200.0 to 648.9°C	±0.2°C ±0.3°C	-320.0 to 392.0°F 392.0 to 1200.0°F	±0.4°F ±0.6°F
Pt 100 (Old JIS 1981)	1.3916	-200.0 to 200.0°C 200.0 to 648.9°C	±0.2°C ±0.3°C	-328.0 to 392.0°F 392.0 to 1200.0°F	±0.4°F ±0.6°F
Pt 100 (US Lab)	1.3926	-200.0 to 100.0°C 100.0 to 700.0°C 700.0 to 862.2°C	±0.2°C ±0.3°C ±0.4°C	-328.0 to 212.0°F 212.0 to 1292.0°F 1262.0 to 1584.0°F	±0.4°F ±0.6°F ±0.7°F
Cµ 10 (Minco)	1.4274	-200.0 to 260°C	±2°C	-328.0 to 500°F	±4°F
Cµ 50	1.4280	-50.0 to 150°C	±1°C	-58 to 302°F	±1°F
Ni 120 (Pure)	1.6720	-80.0 to 315.6°C	±0.1°C	-112.0 to 600.0°F	±0.2°F
Ni 110 (Bristol 7 NA)	1.5801	-106.7 to 315.6°C	±2°C	-160.0 to 600°F	±0.3°F

Ohms 0.00 to 500.00Ω ±(0.01% of Reading + 0.075Ω)

*Rental Inquiry Information*
Reference:	311
Description:	Altek 311 Universal RTD Calibrator