525B RTD/Thermocouple Calibrator

• Calibrate T/C Instruments to 0.1 & 0.01 F/C for J/K/T/E/R/S/B/N/G/C/D/L/U/P: -13.000 to 80.000 mV
• Calibrate RTD Instruments to 0.1 & 0.01 F/C for Pt 10/50/100/200/500/1000 Ohms(3850), Pt 100 Ohm (alpha=3902,3916,3926), Cu 10/50 Ohm and Ni 120 Ohm
• Calibrate w/Confidence, Resolution to 0.01 F/C to 0.2C, Cold Junction Sensor Accurate to 0.05C
• Verify Heat Treating Uniformity Survey Recorders & Perform System Accuracy
• Troubleshoot RTD Sensors & Instruments w/Automatic Detection of 2/3/4 Wire Connections when Individual Wire are Open
• Faster Calibrations & Easily Switch T/C and RTD Types & Scale
• Verify Resistance, Cold Junction Temperature & Output
• Comes w/NIST Cert, Rubber Boot, Carrying Case, mA/V Test Lead Set, RTD Wire Kit, Batteries, Manual

With the 525B you can check and calibrate all your thermocouple and RTD instruments to 0.1 & 0.01 F/C, and measure your temperature sensors. And the 525B works with the thermocouples you normally use, or calibrate from -13.0000 to +80.0000mV. Or the PIE  525B works with the RTDs you normally use, and calibrate from 0.000 to 400.000 and 0.00 to 4000.00 Ohms (for RTDs the fixed or pulsed sensor current is measured by the calibrator)

You get fast calibration and automatic stepping with the 525B. Easily set any value quickly to within 0.1 or 0.01C with the adjustable digital potentioemeter DIAL plus store any 3 temperatures for instant recall with the EZ-CHECK switch. Choose between 2, 3, 5, or 11 steps and ramp to automatically increment the output in 100%, 50%, 25%, 10% or 5% of span. Select step time from 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 60 seconds.

Measure thermocouple and RTD sensors and troubleshoot sensor connections with the 525B. Probes can be measured to 0.1 or 0.01 C/F accuracy. And the internal cold junction thermisitor is accurate to +/-0.05C and is traceable to NIST.

The sensor in the 525B is thermally bonded to an isothermal mass which includes brass blocks with screw terminal for connection of bare t/c wires along with a mini t/c connector for fast connections. This circuitry uses an extremely stable voltage reference and low drift components which makes the 525B more accurate than other handheld and most benchtop t/c calibrators.

SPECIFICATIONS

THERMOCOUPLE SOURCE

Accuracy, +/-(0.008% of setting + 0.006 mV)

Cold Junction, +/- 0.09%F (+/-0.05% C) - Thermistor traceable to NIST for 11 yrs

Output Impedance, < 0.3 Ohms

Source Current, > 10 mA (drives 80 mV into 10 Ohms)

RMS Noise, < +/- 0.0005 mV from 0.1 to Hz

THERMOCOUPLE READ

Accuracy, +/-(0.008% of reading + 0.006 mV)

Cold Junction, +/- 0.09F (+/-0.05%C) - Thermistor traceable to NIST for 11 yrs

Input Impedance, > 10 Megaohms

Open Thermocouple, Threshold: 10.000 Ohms nominal

RTD and OHMS SOURCE

3 & 4 wire accuracy from 1 to 10.2 mA external excitation current: +/-(0.015% of setting + 0.05 Ohms)

3 & 4 wire accuracy below 1 mA of external excitation current: Add (0.025mV)/mA excitation current, to 90 days & 1 year accuracy

2 wire accuracy:  add 0.1 Ohms to 3 & 4 wire accuracy

Resistance ranges: 400 Ohm range: 0.00 to 401.00 & 0.000 to 401.00; 4000 Ohm range: 0.00 to 4010.0 & 0.00 to 4010.00

RMS noise: 400 Ohm range < +/- 0.005 Ohms from 0.1 to 10 Hz; 4000 Ohm range: < +/- 0.05 Ohms from 0.1 to 10 Hz

Allowable excitation current range: 400 Ohm range: 10.2 mA max, steady or pulse/intermittent; 4000 Ohm range: 1 mA max, steady or pulse/intermittent

Pulse excitation current compatibility: DC to 0.01 second pulse width

RTD AND OHMS READ

Resistance ranges: same as RTD and Ohms source

3 & 4 wire accuracy: +/-(0.015% of reading + 0.05 Ohms)

2 wire accuracy:  +/-(0.015% of reading + 0.15 Ohms)

Excitation current: 0.9 mA to 401 Ohms, 0.4 mA to 4010 Ohms (nominal)

VOLTAGE SOURCE

Ranges and resolutions: -13.000  to 80.000 mV & -13.0000 to 80.0000 mV

Accuracy: +/-(0.008% of setting + 0.006 mV)

Source current: > 10 mA

Output impedance: < 0.3 Ohm

RMS noise: < +/- 0.0005 mV from 0.1 to 10 Hz

Short circuit duration: infinite

OPERATING TEMPERATURE RANGE: -20 to 60C (-5 to 140F)

STORAGE TEMPERATURE RANGE: -30 to 60C (-22 to 140F)

TEMPERATURE EFFECT: < +/-50 ppm/C

RH RANGE: 10% <RH<90% (0 to 35C) non-condensing; 10% <RH<70% (35 to 60C) non-condensing

NORMAL MODE REJECTION: 50/60 Hz, 50 dB

COMMON MODE REJECTION: 50/60 Hz, 120 dB

DIMENSIONS: 5.63 x 3.00 x 1.60 in (143 x 76 x 41 mm)

WEIGHT: 12.1 oz (0.34 kg) including boot and  4-AA batteries

BATTERY LIFE: 50 hrs with low battery indication (1 hr of operating left)

PROTECTION AGAINST MISCONNECTION: Overvoltage protection to 60 vrms (rated for 30 seconds); Red LED indicates OVERLOAD or out of range conditions

DISPLAY: High contrast LCD. LED backlight for use in low lit areas