ET2712 RTD Calibrator_Hangzhou Zhongchuang Electron Co.,Ltd.,
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Hangzhou Zhongchuang Electron Co.,Ltd.
Phone: 0086-571-56770221
Fax: 0086-571-56861355
Zip Code: 310015
Address: No.3, Kangle Road, Gongshu District, Hangzhou,Zhejiang,China
ET2712 RTD Calibrator
Browse through: Date of issue:2019-04-28

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.
Accuracy:0.02% or 0.05%
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
Function Measure Source
DC V 0~30V Not available
Resistance 0~3200Ω 0~3200Ω
RTD Pt100, Pt1000, Cu50, Cu100 Pt100, Pt1000, Cu50, Cu100
Others Stepping output, ramp, phase step output, user-defined range
Specifications are based on a one year calibration cycle and apply from +18°Cto +28 °C unless stated otherwise. All specifications assume a 10 minute warmup period.
1,DC Voltage Measurement
Range Maximum measurement range Resolution Accuracy (% of reading + Count)
ET2712B ( 0.05%) ET2712A ( 0.02%)
30V 0V~31V 0.001V 0.05+2 0.02+2
-10°C~18°C,+28°C~55°C temperature coefficient,±0.005%FS/°C.
Input resistance: >1MΩ.
2,Resistance Measurement
Range Maximum measurement range Resolution Accuracy (Ω)
ET2712B ( 0.05%) ET2712A ( 0.02%)
2-wire, 3-wire 4-wire 2-wire,
400Ω 0~440Ω 0.01Ω 0.25 0.15 0.15 0.10
3200Ω 420Ω~3600Ω 0.1Ω 1.5 1.0 1.0 0.5
-10°C~18°C,+28°C~55°C temperature coefficient,±0.005%FS/°C.
Exciting current during measurement:
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 than 25Ω.
3,Resistance Output
Range Maximum output range Resolution External exciting current Accuracy (Ω)
ET2712B              ( 0.05%) ET2712A            ( 0.02%)
400Ω 0~440Ω 0.01Ω 0.4mA~4.0mA 0.25 0.15
3200Ω 400~3600Ω 0.1Ω 0.1mA~0.5mA 1.0 0.50
-10°C~18°C,+28°C~55°C temperature coefficient,±0.005%FS/°C.
Graduation Range Resolution Accuracy (°C)
ET2712B ( 0.05%) ET2712A ( 0.02%)
4-wire Output 2-wire
4-wire Output
Pt100 -200°C~850°C 0.1°C 0.7 0.4 0.7 0.4 0.3 0.3
Pt1000 -200°C~650°C 0.4 0.3 0.3 0.3 0.15 0.15
Cu50 -50°C~150°C 1.2 0.8 0.8 0.8 0.5 0.5
Cu100 -50°C~150°C 0.7 0.4 0.4 0.4 0.25 0.25
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 25Ω.

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

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