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
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
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)
			ET2712( 0.05%)	ET2712( 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)
			ET2712( 0.05%)		ET2712( 0.02%)
			2-wire, 3-wire	4-wire	2-wire, 3-wire	4-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: 400Ω:1.0mA±10%; 3200Ω:0.2mA±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 than 25Ω.

3,Resistance Output

Range	Maximum output range	Resolution	External exciting current	Accuracy (Ω)
				ET2712( 0.05%)	ET2712( 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.

4,RTD

Graduation	Range	Resolution	Accuracy (°C)
			ET2712( 0.05%)			ET2712( 0.02%)
			2-wire 3-wire	4-wire	Output	2-wire 3-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
Weight:0.35Kg
Size:185mm×93mm×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)