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specifications Extech RH520A-220: Humidity+Temperature Chart Recorder with Detachable Probe
Display: Graphical LCD
Temperature Range/Accuracy: -17 to 50°C (0.0 to 120.0°F) / ±1.0°C (1.8°F); -28 to -17°C (-20.0 to 0°F) / 3°C (±5.4°F); 50 to 60°C (120.0 to 140°F) / 3°C (±5.4°F)
Humidity Range/Accuracy: 10 to 95%/±3.0% RH
Dew point temperature: -28 to 60°C (-20.0 to 140.0°F)
Internal memory storage: 49,152 complete reading sets
Sampling interval: Selectable recording rate: 0.1(6 seconds) to 199.9 minutes
Graph scaling: User selectable in 5°C/F in 10% increments
Low battery indication: 5-segment battery indicator
Alarm output: 3.5mm Mono Phone Plug, Maximum: 3.4mA @ 5 VDC, Minimum Output Voltage: 2.5 VDC
Power supply: Three (3) ‘AA’ batteries and AC adaptor (included); DC 5V 500mA, 3.5mm x 1.35 mm plug
Battery life: 4 weeks typical, using alkaline batteries
Operating Temperature: CONTROL MODULE and DISPLAY: 0 to 50°C (32 to 120°F); SENSOR: -28 to 60°C (-20 to 140°F)
Operating Humidity: CONTROL MODULE and DISPLAY: 90% RH max. SENSOR: 95% RH max.
Dimensions: 127 x 196 x 23mm (5.0 x 7.7 x 0.9″)
Weight: 357g (12.6oz)
Introduction Extech RH520A-220
Graphical datalogger for Humidity/Temperature measurements and Dew Point calculation
This paperless chart recorder provides a simultaneous digital and graphical display of relative humidity and temperature. The display also shows dew point, date and time, and Min/Max measurements. Stored readings can be recalled on the display or downloaded to a PC to obtain a permanent record. Provisions for wall mounting or the control panel swivels to act as a desk stand. The user can set audible and visual alarms with High and Low limits for humidity and temperature. ExChart software calculates Wet Bulb and Grains per Pound (GPP). Comes complete with a detachable sensor probe with 1-meter cable, RS-232 cable with the USB adapter, Windows-compatible software, 220 VAC adapter, and three AA batteries.
Features
– Simultaneous numerical and graphical display of Humidity and Temperature readings, plus Time and Date
– Measures Humidity (10 to 95%RH) and Temperature (-20.0°F to 140.0°F) plus calculates Dew Point
– Basic accuracy 3%RH, 1.8°F/1°C
– Large dual graphical LCD displays with adjustable vertical and horizontal TAC resolution
– Internal memory records up to 49,000 data points and can be transferred to a PC via RS-232 serial port for further data analysis
– LCD indicates the percentage of memory remaining
– Comes with a 220V AC power supply
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