过程校验仪YHS-707

YHS707回路校准仪是对电流回路进行校准、维修和维护的。

*解决方案。新型的快速感应旋钮使其*快速、易用、长寿命。

主要特点有：

·使用快速感应旋钮，单手即可操作

·mA电源、*和测量功能

·0.025% 的准确度和0.001mA的分辨率

·同时显示mA和量程的百分比

·可选的步进和斜波输出

·24V回路电源，进行mA测量，包括250Ω的HART电阻器

·0-28直流电压测量·不开盖即可方便地更换电池

·紧凑的设计结构，具有可拆卸的*护套。

技术规格

电流测量

量程：    0至24mA

分辨率：  0.001mA        

准确度：  0.025%读数+2个*位

输出电流

范围：    0至20mA或4至 20 mA

准确度：  0.025% 读数 + 2 个*位

驱动能力：1200Ω；950Ω@20mA，HART模式

电流*

范围：0至20mA 或4至20mA

准确度：0.025%读数+2*位

外部回路电压要求：12-30V

回路电源   24V

电压测量

范围：0至28V DC

分辨率：1mV

准确度：0.025%读数+2个*位

YHS-707  Loop Calibrator

features

The fast, one-handed tool for loop checks. Just click to calibrate.

This feature-rich solution combines the * features push-button and knob-base loop calibrator and offers:

• Large display and simple, quick-click interface for easy one-handed operation.
• Simultaneous mA and % readout for quick, easy interpretation of readings.
• mA accuracy of 0.025%, *ior to other loop calibrators in this price range.
• 1 µA resolution for mA source, simulate and measure.
• Push button 25% steps for fast, easy linearity checks.
• 0-100% “span check” for fast confirmation of zero and span.
• Selectable slow ramp, fast ramp, and step ramp to provide *ooth outputs for valve slewing and loop functional tests.
• 24 volt internal loop supply, so you can power and read a tran*itter at the same time without carrying a DMM.
• Measures V dc to 28 V.
• Single 9V battery that is easily changed without braking calibration seal
• 0 - 20 mA or 4 - 20 mA default start up modes.
• Innovative output adjustment dial with 1 µA and 100 resolution.
• HART ™ mode connects 250 Ω resistor in series with 24 V loop for compatibility with HART communicators.

Specifications

Environmental Specifications

Operating Temperature    -10ºC to 55ºC

Storage Temperature    -30ºC to 60ºC

Humidity (Without Condensation)    0 to 90% (0ºC to 35ºC); 0 to 70% (35ºC to 55ºC)

Temperature Coefficient    -10ºC to 18ºC, 28ºC to 55ºC, ±.005% of range per ºC

Safety Specifications

Maximum voltage   30V

Mechanical & General Specifications

Size   152 x 70 x 41 mm

Weight    224 g (340 g including holster)

Batteries    One 9V battery Alkaline

Warranty   Three years

Shock & Vibration   per MIL-T-28800 for a Cl* 2 Instrument

Display current and % of span   Yes

Auto step, auto ramp   Yes

Span Check   Yes