1 Basic Introduction 1.1 Function ⚫ A split-screen display. The upper display allows you to measure volts, current (with loop power), resistance and continuity test. The lower display allows you to measure and source volts, current, resistance temperature detectors (RTD), thermocouples (TC), frequency, and ohms. ⚫...
1.3 Terminal Description Figure 1.3-1 Name Description Communication and Connect the power adaptor to charge batteries or ① Charging connector connect the calibrator to the computer. Measure V, mV, mA, Input terminals for measuring voltage, current, ② ③ Loop, Ω and continuity resistance, and supplying loop power.
1.4 Keys description Figure 1-3 Description Turns the power on or off Selects DC V or DC mV measurement function in the upper display Selects DC mA or Loop Power measurement function in the upper display Selects resistance measurement or continuity test function in the upper display Turns backlight on or off.
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Cycles through: Slow repeating 0 % - 100 % - 0 % ramp Fast repeating 0 % - 100 % - 0 % ramp Repeating 0 % - 100 % - 0 % ramp in 25 % steps Set output by 0% of span. Press and hold to store the source value as the 0 % value.
2 Basic Operation 2.1 Measure and Source This section acquaints you with some basic operations of BRT-2025/ BRT-1825. Proceed as follows to perform a voltage-to-voltage test: Connect the calibrator’s the voltage output to its voltage input as shown in Figure 2.1-1. Figure 2.1-1 Press more than 2 seconds to turn on the calibrator.
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Then the type of product and automatic shutdown time will be displayed for 2 seconds as shown in Figure 2.1-3. Figure 2.1-3 Then the default interface of boot will be displayed as shown in Figure 2.1-4: Figure 2.1-4 Attention: The upper and lower default modes are both based on DC voltage during turn on. Press for SOURCE mode (lower screen).
Press to step between 0 and 100% in 25% step increments. The screen will display as shown in Figure 2.1-6 Figure 2.1-6 2.2 Shut Down Mode The calibrator comes with the Shut Down mode enabled for a time duration set to 30 minutes (displayed for about 2 seconds when the calibrator is initially turned on).
in Figure 2.3-1. Figure 2.3-1 Press to adjust the brightness of backlight. Press to save brightness level, will appear and then the calibrator will enter into the work mode (Without pressing any key for 5 seconds, the calibrator will exit automatically). 3 Functions of Upper Display 3.1 DC V and DC mV Measurement The default function of the upper screen is DC V measurement after turn on.
3.2 DC mA Measurement Press to select DC mA(unit: ), the sign should not be displayed and connection is same to that of DC V measurement. 3.3 Current Measurement with Loop Power The loop power function activates a 24 V supply in series with the current measuring circuit, allowing you to test a transmitter when it is disconnected from plant wiring.
circularly with the unit of Ω and the connection is the same as DC V measurement. In the continuity test function, the buzzer works when the measured value less than 50Ω. 4 Functions of Lower Display The state of the upper display remains unchanged during the operation of the lower display.
4. 2 DC mA Measurement Press to select mode, press to select DC mA measuring function with the unit of . The connection is shown in Figure 4.2-1. Figure 4.2-1 4.3 DC mA Source(active) Press to select mode. If necessary, press to select DC mA source with the unit of and then the calibrator can implement current...
Figure 4.3-1 When the output load is too heavy, sign will appear in the display as shown in Figure 4.3-2. and, at the same time, the main value of lower display will flash, which means that the actual output current cannot reach the set value, so you should check connection and load accordingly.
Loop Power Supply Display device Figure 4.4-1 4.5 Measure and Source of Resistance Measure Press to select mode. If necessary, press to select resistance function with the unit of . The interface is shown in Figure 4.5-1: Figure 4.5-1 Attention: Over range indicate when the connection open Resistance measurement supports the connection types of two-wire, three-wire and four-wire.
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Figure 4.5-2 Press to select a 2-, 3-, or 4- wire connection and then the calibrator will not detect the connecting type automatically unless you quit the mode of resistance measurement and reenter. Source Press to select mode. If necessary, press to select resistance function with the unit of .
Attention: The Figure 4.5-3 is 400 range and the Figure 4.5-4 is 3200 range. 4.6 Measurement / Source of Frequency Measure Press to select mode, press to select frequency, its unit . The connection is same to DC V measurement. The screen will display as shown in Figure 4.6-1 Figure 4.6-1 Source...
5 Temperature Measurement 5.1 Using Thermocouples (TC) The calibrator supports ten standard thermocouples, including type E, N, J, K, T, B, R, S, L, or U. Lower table summarizes the ranges and characteristics of the supported thermocouples. Negative Lead Type Positive Lead Material Specified Range(℃)...
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Figure 5.1-1 Attention: If the calibrator and the thermocouple plug are at different temperatures, wait one minute or more for the connector temperature to stabilize after you plug the miniplug into the TC input/output. Press to select mode. Press for the TC display. If desired, continue pressing this key to select the desired thermocouple type as shown in Figure 5.1-2.
There are two kinds of cold end temperature compensation for thermocouple measurement, automatic compensation directly using machine internal cold end temperature compensation and manual compensation through the key to set the cold end temperature compensation by the user. 5.1.1 Automatic compensation First entered the thermocouple measurement mode, the default of the cold end temperature compensation is automatic compensation reading as shown in Figure 5.1.1-1.
compensation. Figure 5.1.2-1 If you need to adjust the manual compensation value, press keys to adjust. Press key to save the value of manual compensation and exit from the setup mode at the same time, reading as shown in Figure 5.1.2-2. Figure 5.1.2-2 If necessary, press key return to automatic compensation.
Press to select mode. Press for the RTD display. If desired, continue pressing this key to select the desired RTD type. The calibrator can detect the connecting type automatically, and you can Press to select a 2-, 3-, or 4- wire manually. 6 Simulation of temperature sensor 6.1 Simulating Thermocouples Connect calibrator input/output terminal to the instrument to be tested using the...
Figure 6.1-1 Press to display the DC mV value. The DC mV value continue to display for 3s and then automatically return to the original display. 6.2 Simulating RTD Connect the calibrator and the instrument to be tested according to the Figure 6.2-1.
simulation. The calibrator can simulate a two-wire RTD source in the front panel. To be connected to a third-wire or Fourth -wire transducer, folding cable can be sued to use as extra wiring. If necessary, press to select mode. Press for the RTD display.
7.3 Factory Reset Factory reset consists of the following items: ⚫ The upper and lower working modes recover to DC V measurement function. ⚫ Automatic shutdown time is reset to be 30 min and becomes effective. ⚫ LCD backlight brightness is reset to be 60%. ⚫...
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black Figure 7.4-1 www.brightwinelectronics.com info@brightwinelectronics.com...
8 Power The calibrator needs 6 disposable LR03 model (size 7) alkaline batteries or 6 R03 model (size 7) nickel-metal hydride batteries (or nickel-cadmium batteries). The longest service life of alkaline batteries can reach 50 hours. A 12V/1A power adaptor is used for charging and providing working power for the calibrator.
9 Specifications Specifications are based on a one-year calibration cycle and apply from +18 C to +28 C unless stated otherwise. All specifications assume a 10 minute warmup period. 9.1 DC Voltage Measurement Accuracy ( % of reading + Maximum counts) Range measurement...
3-wire: Assumes matched leads with a total resistance not exceeding 25Ω. 10 Product Accessories 10.1 Standard Accessories BRT-2025/BRT-1825 multifunction process calibrator also includes the following: ⚫ Hard spot test leads (two sets) ⚫ Alligator clips (two sets) ⚫ One 12V/1A power adaptor ⚫ ETX-2025/ETX-1825 User Manual www.brightwinelectronics.com info@brightwinelectronics.com...
Alligator clip Hard spot test leads Figure 10.1-1 10.2 Optional Accessories ⚫ 6 R03-model rechargeable batteries ⚫ 1 Metal Box ⚫ Communication line 11 Warning To avoid possible electric shock or personal injury: ⚫ Test a given voltage to confirm its normal operation before using. Mutual authentication of the upper and lower display data, for instance.
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⚫ Remove the test line of the calibrator before opening the battery door. ⚫ Check whether damaged or exposed metal exists in test line and whether the test line has been conducted. Replace the damaged test line before using. ⚫ Do not touch the metal contact when the detector is used.
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