Dwyer 490-4 Wet/wet handheld digital manometer, range 0-100.0 psi, max. pressure 200 psig.
Series 490 Digital Manometers are versatile, hand-held, battery operated manometers available in several basic ranges for positive or positive differential pressure measurement and can tolerate most liquid media compatible with 316LSS.
A memory function allows storage of up to 40 readings for later recall and a backlight provides auxiliary lighting for hard-to-see locations.
Standard are a hold feature and both visual and audible overpressure alarms. A new feature added to the Series 490 is a field adjustable damping. This allows the user to choose the level of display averaging rate corresponding to the fluctuation level common in many applications. A 9V alkaline battery is included that provides up to 100 hours of operation.
Features:
- Measures Virtually any Liquid Media Compatible with 316L Stainless Steel.
- Instant Selection from up to Seven English/Metric Units.
- Stores 40 Readings in Memory for Later Reference.
- Both Audible and Visual Overpressure Alarms.
- Operates up to 100 Hours on a Single 9 Volt Battery.
- New Adjustable Dampening Feature for Averaging Fluctuating Readings.
Specifications:
Service: Compatible gases & liquids.
Wetted Materials: Without valve: Type 316L SS. Additional wetted parts with 3-way valve option: Buna-N, silicone grease, PTFE, brass 360, copper, reinforced acetal copolymer.
Accuracy: ±0.5% F.S., 60 to 78°F (15.6 to 25.6°C); ±1.5% F.S. from 32 to 60°F and 78 to 104°F (0 to 15.6°C and 25.6 to 40°C).
Pressure Hysteresis: ±0.1% of full scale.
Temperature Limits: 32 to 104°F (0 to 40°C).
Storage Temperature Limits: -4 to 176°F (-20 to 80°C).
Display: 0.42" (10.6 mm) 4 digit LCD.
Power Requirements: 9 volt alkaline battery. Battery included but not connected.
Weight: 14.1 oz (400 g).
Connections: Two 1/8" (3.18 mm) female NPT.
Agency Approvals: CE.
