Loop Calibrator YHS-717

features

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

This feature-rich solution combines the best 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%, superior 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 smooth outputs for valve slewing and loop functional tests.
• 24 volt internal loop supply, so you can power and read a transmitter 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                   a group of large capcity Lithium Battery (7.4V)

Warranty                   Two years

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

Display current and % of span   Yes

Auto step, auto ramp           Yes

Span Check                  Yes