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Shenzhen Yijie Instrument Co., Ltd
VMA module
NegotiableUpdate on 06/13
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Overview
VMA0055 far exceeds the measurement capability of ± 50 volts/mA of MFT basic units and has its own independent power supply, so is the issue of commonalities a problem.
Product Details
VMA module
MFT4000 series calibration for voltage, current measurement and simulation, and 24 VDC isolated loop power supply
MFT4000 series calibrator for voltage, current measurement and simulation, and 24 VDC isolated loop power supply. The VMA0055 is a DC voltage and current measurement and simulation module used with the Meriam MFT4000 series multifunctional tester. The module utilizes the remarkable multifunctional capabilities of DVM and loop calibrator. When used in conjunction with other MFT functions, the VMA/MFT combination provides valuable functionality that is not available on other devices.
The measurement range includes ± 500 mV, ± 55 V, and ± 100 mA. The source function includes 0-24 V and 0-22 mA. When connected to a loop, it can also be used to temporarily provide 24V DC loop power during debugging, interruption, or calibration activities. The VMA module without power devices can also simulate transmitter output.
VMA0055 far exceeds the measurement capability of ± 50 volts/mA of MFT basic units and has its own independent power supply, so is the issue of commonalities a problem.
The certifications available include:
ce mark
NIST Traceability - Standards
Intrinsic Safety - MET Laboratories per CSA C22.2&UL 913 Class I Division I, Groups A, B, C&D
authentication
Intrinsic safety certification from MET laboratory. MET Laboratory is a nationally recognized testing laboratory (NRTL). This module is certified by MET laboratory and meets the standards CSA C22.2 No.1010.1, CSA C22.2 No. 157-92, and UL913 Fifth Edition Rev 2/21/97 for Class I, Division I, Groups A, B, C, and D, T5 Dangerous areas. Limitations - See detailed information and intrinsic safety control diagrams attached to each MFT modular calibrator.
VMA0055Specification for resolution, range, and measurement accuracy of modules
Environmental temperature range: -10 ℃ to+50 ℃ (+14 ℉ to 122 ℉)
Accuracy declaration for ambient temperatures of 28 ℃ and 18 ℃ (64.4 ℉ to 82.4 ℉)
Apply ambient temperatures of 28 ℃ (82.4 ℉) with a temperature coefficient below 18 ℃ (64.4 ℉) and above
VMA0055 DC current (mA) measurement and source mode
| specifications | Measurement mode | Source mode (no external power supply required) |
| resolution | .001 mA | .001 mA |
| range | ± 100.000 mA (55 Vdc compliant) | 0-22.000 mA (see Note 3 below) |
| accuracy | ± (0.01% reading+0.015% FS) | ± (0.01% of reading+0.015% FS) |
| open circuit voltage | 24 VDC | |
| output drive | 15 VDC minimum @ 24 mA, resistive load | |
| temperature coefficient | ± (0.001% reading+0.002% FS)/° C | ± (0.003% Rdg +0.003% FS) / °C |
VMA0055 volt DC measurement and source mode
| specifications | Measurement mode | Source mode (no external power supply required) |
| resolution | 1/100000 Count:. 001 mV;. 001 V | 1/100,000 |
| range | 500 mV; 1, 2, 4, 8, 15, 30, 55 V | 0 – 24.000 VDC |
| accuracy | ± (0.025% reading+0.005% FS) | ± (0.01% reading+0.05% FS) |
| open circuit voltage | 24 VDC | |
| output drive | 15 VDC minimum @ 24 mA, resistive load | |
| temperature coefficient | ± (0.001% reading+0.0015% FS)/° C | ± (0.0025% reading+0.0035% FS)/° C |
| 2-wire transmitter simulation mode | |
| specifications | Simulation (external power supply) |
| resolution | .001 mA |
| range | 0 – 24.000 mA |
| accuracy | ± (0.01% reading+0.015% FS) |
| Circuit voltage limit | 1 VDC minute, 55 VDC maximum |
| temperature coefficient | ± (0.003% reading+0.003% FS)/° C |
| Circuit power mode | |
| specifications | regulated power supply |
| range | 24 VDC |
| open circuit voltage | 24 VDC |
| output drive | 15 VDC minimum @ 24mA, resistive load |
matters needing attention:
1. The nominal resistance of the current terminal in VMA is 10-15 Ω
2. The output load line is linear
3. The derating of the operating time of high-temperature and high current units is as follows:
-Continuous operation @ 50 ℃ to 20mA
-10 minutes typical @ 50 ° C and 24 milliamps (device will be turned off to prevent thermal damage)
ordering information
VMA0055-11-1 VMA module
accessory
P/N A900529-00015: VMA test line kit: 9 "protruding banana plug (both ends), various connectors (for output and analog functions)
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