Dew-Stat MA-99 
壓縮空氣用露點溫度測定器易於操作的露點溫度量測儀器, 適用於醫院呼吸用壓縮空氣之水份含量測試


Features:
 

	Breakthrough self-cleaning technology
	No recalibration ever required
	Precision NIST-traceable fundamental dew point measurement
	Meets NFPA-99 requirements
	Continuous controlling chilled mirror technology
	Self-contained integrated package.

原廠目錄下載 (PDF Format, 2 pages, 51 KB.)
Chilled Mirror Hygrometer, Model Dew-Stat MA-99

Performance:

Accuracy: ±1.0ºF dew point from 30º to 50ºF,±2.0º dew point over full measurement range
Repeatability: ±0.2ºC
Measurement Range: +20º to +95ºF dew point (at 95ºF ambient temp.,55 psig), +10º to +77ºF dew point (at 77ºF ambient temp., 55 psig)
Sample Flow: 1 scfh (settable, 0.5 - 2.0 scfh with integral throttling valve and flow meter)
Autoclean Function: Programmable interval, requires 20 psig minimum
AFAC (Anti-False Alarm Circuit): ON or OFF, DIP switch selectable under access panel.

Physical

Dimensions: 12"H x 10"W x 8"D
Case Material: Molded thermoplastic
Weight: 10 lbs.
Connections:
Air: 1/8" NPTF, top of enclosure
Electrical: Terminal strip, 12 gauge wire maximum, bottom of enclosure
Sample Air Vent: Open, unobstructable, bottom exit
Environmental: Constructed to NEMA-12 requirements
Sensor Mirror: Replaceable
Mounting: Vertical, Wall mount
Electrical Env.: Fast transient burst per IEC 801-4; ESD per IEC 801-2; Line sure per IEC 801-5
Filter: In-line, replaceable

Functional

Outputs:
Alarm: 1 Form C, 2 amps, 240 VAC/24 VDC resistive load, non-latching, NO/NC/COM field-settable via switch under access panel, automatic reset.
Trip Conditions: measured dew point above alarm set point; sensor head left open (time delay)
Audible Alarm: 85 dBA at 3 feet, variable tone, silence button on front panel, automatic reset
Indicators: 3 1/2 digit LED dew point readout with º/º switchable display. LED indicators for the following conditions: Auto-clean, Out of Range, Service; Alarm Adjustable visual flow meter with graduations 0-2 scfh
Diagnostics: Water phase change calibration check
Analog (opt.): 4-20mA DC, 500 ohm maximum load

Inputs:
Power: 115 VAC (+10% / -15%), 60 Hz, 35 watts max.
Operating Ranges:
Ambient Temperature: +32º to +120ºF
Sample Pressure: 0-150 psig

Factory Setting (field resetable):
Temperature Units: ºF
Alarm Point: 39ºF
Autoclean: Every 3 hours
AFAC: Enabled
Sensor Open Alarm: 20 minute delay before alarm.