Portable Resistance Calibrator Et2712 Accuracy: 0.05/0.02 %

About Resistance Calibrator ET2712:-

For the temperature calibration professional that wants a highly accurate, easy-to-use, single function RTD temperature. It is a kind of calibrating RTD temperature transmitter instrument. It can measure and simulate various type RTD. It can also simulate and test resistance. calibrator the ET2712 is the ideal test tool.
Features
Measure output temperature of thermal resistance
May simulate output of thermal resistance
Automatic identification of three-wire or four-wire connection mode


Perfect performance on waterproof protection: IP67 grade
In case of connecting 220V with automatic over voltage protection function.
With manual stepping, automatic stepping and 0 ~ 100% output of phase step and ramp function
LED with white backlight


Summary of Source and Measure Functions
FunctionMeasureSource
DC V0~30VNot available
Resistance0~3200IC0~3200IC
RTDPt100, Pt1000, Cu50, Cu100Pt100, Pt1000, Cu50, Cu100
OthersStepping output, ramp, phase step output, user-defined range
Specifications
Specifications are based on a one year calibration cycle and apply from +18A Cto +28A A CA unless stated otherwise. All specifications assume a 10 minute warmup period.
1,DC Voltage Measurement
RangeMaximum measurement rangeResolutionAccuracy (% of reading + Count)
ET2712B( 0.05%)ET2712A( 0.02%)
30V0V~31V0.001V0.05+20.02+2
-10A C~18A C,+28A C~55A CA temperature coefficient,A 0.005%FS/A C.
Input resistance:A >1MIC.
2,Resistance Measurement
RangeMaximum measurement rangeResolutionAccuracy (IC)
ET2712B( 0.05%)ET2712A( 0.02%)
2-wire, 3-wire4-wire2-wire,
3-wire4-wire
400IC0~440IC0.01IC0.250.150.150.10
3200IC420IC~3600IC0.1IC1.51.01.00.5
-10A C~18A C,+28A C~55A CA temperature coefficient,A 0.005%FS/A C.
Exciting current during measurement:
400IC:1.0mAA 10%;
3200IC:0.2mAA 10%;
Two-wire: Conductor resistance is excluded from errors.
Three-wire: Matching test line should be used. The total resistance of conductor should not be larger thanA 25IC.
3,Resistance Output
RangeMaximum output rangeResolutionExternal exciting currentAccuracy (IC)
ET2712B( 0.05%)ET2712A( 0.02%)
400IC0~440IC0.01IC0.4mA~4.0mA0.250.15
3200IC400~3600IC0.1IC0.1mA~0.5mA1.00.50
-10A C~18A C,+28A C~55A CA temperature coefficient,A 0.005%FS/A C.
4,RTD
GraduationRangeResolutionAccuracy (A C)
ET2712B( 0.05%)ET2712A( 0.02%)
2-wire
3-wire4-wireOutput2-wire
3-wire4-wireOutput
Pt100-200A C~850A C0.1A C0.70.40.70.40.30.3
Pt1000-200A C~650A C0.40.30.30.30.150.15
Cu50-50A C~150A C1.20.80.80.80.50.5
Cu100-50A C~150A C0.70.40.40.40.250.25
As for exciting current during measurement, please refer to resistance measurement function.
As for allowable external exciting current during output, please refer to resistance output function.
2-wire: Does not include lead resistance.
3-wire: Assumes matched leads with a total resistance not exceeding 25IC.


Using environment temperature:-18a ~55a
Store environment temperature:(-20 a 60)A C
Relative humidity :0~ 90RH No condensation

Size:185mmA 93mmA 47mmm
Power supply: 6 R03-model rechargeable batteries or power adapter
communication mode:RS232


1,Standard Accessories
A set of calibrator also includes the following items:
hard spot test leads (one set)
alligator clips (one set)
One 12V/1A power adaptor
Users Manual
2,Optional Accessories
6 R03-model rechargeable batteries
1 Metal Box

18P02 communication wires
Power adapter(18A52)
Probes(18A53)