RSA-D4B/RSA-D4P Digital Differential Pressure Gauge

Applications & Features

• Apply high accuracy MEMS sensor and digital technologies, can measure positive,negative or differential pressure. It can completely replace the traditional pointer mechanical gauge
• It can measure system pressure of fan, blower, filter, furnace draft and orifice plate and can apply to various clean room, biological safety cabinet, clean bench, ducts collection, medical or pharmaceutical machine, etc.
• No any movable parts, no any effect on vibration. With ultra thin design of 33mm, it could be flush, surface or wall mount.
• Fashion and state of art housing design, with large LCD or LED display
• Function keys: zero reset, units select, display update time, automatic sleep time, sound-light alarm, etc.
• Built-in buzzer and backlight, for sound-light alarm(RSA-D4P)

Specifications

Medium: Non-combustible, non-corrosive air, insensitive to moisture, dust, condensation and oil
Work Environment: Battery type -10~50°C
Power type -20~70°C(LED), -10~60°C (LCD) 
Medium Temp.: 0~60°C
Temp. Compensation: 0~50°C
Working Pressure: overload 10xFS, burst 15xFS
Accuracy: ±1.0%FS(±2.0%FS@25Pa range)
Long term stability: ±0.5%FS/Year
Thermal effect: <0.05%FS/°C (zero), <0.08%FS/°C (FS) 
Power type (RSA-D4P):
Display: 4 bits LCD with 18mm character height and unit indication, or 4 bits 0.8” red LED
Power: 16~28VDC/AC or 85~265VAC
Battery type (RSA-D4B):
Display: 4 bits LCD, 18mm character height with units indication
Power: AA battery×4, recommend LR6 alkaline
Display update time: selectable for 0.5/1/5/10s(default 1s)
Automatic sleep time: selectable for normal open (NO), or 1/5/10min (default 1 min)
Battery service life: when display update time=1s and automatic sleep time=NO, ≥2 year. When display time>1s or automatic sleep time≥1min, will be longer. It also depends on the quality of the batteries.
Process Connection: 5mm ID tubing, two pairs (on left & back side)
Key: 3 touch buttons
Materials: ABS 
Protection: IP65
Weight: 300g (battery type，including batteries)，260g (power type)
Approval: CE
Accessory: A-S0 is standard including 2m/5mm ID tube, 3 pairs of screws and brackets. Options are A-S1, A-S2 and A-S7-X. They can be used for surface, panel or flush mount and should be ordered separately. See details in Accessories.

Models

Battery type(RSA-D4B) has no display and power options, and its LCD has no
backlight

Measuring Ranges

1. 5 engineering units can be set by the key and related LCD/LED will be on.
2. For RSA-D4B range, only 3, 5, 7 and 8 available.
3. For zero center models, add “Z”at the end of the model. For example, RSA-D4P1Z, means -30-0-30pa. Only

RSA-ST4/RSA-ST4A/RSA-TT4A/RSA-ST4A  Install Well

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